YOKOGAWA CW140 User Manual Download Page 70

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IM CW140-E

7-18

7.6

Averaging Function

As power in the measured lines may greatly fluctuate, the CW140 is facilitated

with a function to calculate the moving average. The averaging function can

be set to on or off on page 1/2 of the system setting screen or on the last page

of the setup screen in each measurement mode.

Selected number of averaging: 2 to 10 cycles

●

Moving Average Equation

Dn = (Mn – (m – 1) + Mn – (m – 2) + ... + Mn – 1 + Mn) / m

m: Number of averaging cycles to be set
Mn: Measured value at nth measurement
Dn: Moving average at nth measurement (on-screen reading)

m cycles

TIP

• The averaging function cannot be used when in harmonics measure mode because the sampling

method used in this mode is different from other modes.

• For integrated values of electric power and demand, the averaging function does not work even if it is

set to on.

SEE ALSO

For details on the settings, see page 1/2 of the system setting screen, p 5-2, or the last page of the setup

screen in each measurement mode:

Instant mode: p. 8-13

Electric energy mode: p. 9-11

Demand mode: p. 11-12

Summary of Contents for CW140

Page 1: ...User s Manual CW140 CLAMP ON POWER METER IM CW140 E IM CW140 E 3rd Edition July 2001 YK ...

Page 2: ......

Page 3: ...of access for later reference This manual will come in handy when you are unsure of how to operate the instrument Notices The contents of this manual are subject to change without prior notice In addition figures and illustrations representing display views in this manual may differ from real views Every effort has been made to ensure accuracy in the preparation of this manual Should any doubts ar...

Page 4: ...DA D A output C1 Clamp on probe for 20 200A 2 pcs set C2 Clamp on probe for 20 200A 4 pcs set C3 Clamp on probe for 50 500A 2 pcs set C4 Clamp on probe for 50 500A 4 pcs set C5 Clamp on probe for 200 1000A 2 pcs set C6 Clamp on probe for 200 1000A 4 pcs set PM1 NiMH nickel hydrogen battery pack and carrying case PM2 PM1 and FDD unit No field Denotes the instrument number Refer to this number when ...

Page 5: ...AC adapter NiMH battery pack 94004 1 Printer 97010 1 AC adapter for printer Europe 94006 1 AC adapter for printer USA 94007 1 Thermal paper for printers 97080 10 rolls TIP It is advisable that the packing box be stored as it is useful when you transport the instrument Housing CW140 Main Unit and Accessories An optional carrying case can accommodate the CW140 main unit with its current sensing clam...

Page 6: ...ge to the instrument Direct Current This symbol indicates DC voltage current Alternating Current This symbol indicates AC voltage current ON This symbol indicates On power OFF This symbol indicates Off power Double Insulation This symbol indicates double insulation WARNING Indicates a hazard that may result in the loss of life or serious injury of the user unless the described instruction is abide...

Page 7: ...se of Clamp on Current Probes When using clamp on current probes keep the circuit voltage below 600 V AC in order to avoid possible short circuits or accidents resulting in injury or death Avoid using the instrument if it has been exposed to rain or moisture or if your hands are wet Do not use clamp on current probes with any non insulated conductors Measures In Case of Anomalies If the instrument...

Page 8: ...T CT 3 8 3 6 Connecting a Power Supply and Turning It On Off 3 9 3 7 Performing Measurements with Higher Precision 3 18 Chapter 4 Basic Operation Flow and Top Menu Screen 4 1 4 1 Basic Operation Flow 4 1 4 2 Top Menu Screen 4 2 Chapter 5 System Settings 5 1 5 1 System Settings 5 1 5 2 System Reset 5 4 Chapter 6 File Handling 6 1 6 1 File Handling 6 1 6 2 File Name and File Attribute 6 4 6 3 Enteri...

Page 9: ...Showing Tables in Harmonics Measure Mode 12 1 12 2 Showing Graphs in Harmonics Measure Mode 12 3 12 3 Working with the Function Keys 12 5 12 4 Logging in Harmonics Measure Mode 12 6 12 5 Setup Data Items of Harmonics Measure Mode 12 9 12 6 Computational Expressions 12 15 Chapter 13 File Functions 13 1 13 1 Saving Loading and Printing with File Functions 13 1 Chapter 14 External I O Functions 14 1 ...

Page 10: ...s 19 15 Appendix App1 1 Appendix 1 Block Diagram of CW140 Main Unit App1 1 Appendix 2 Communication Commands App2 1 Appendix 3 Explanation of Data Item to be Saved Printed App3 1 Appendix 4 Terminology App4 1 Appendix 5 Explanation of Reactive Power Method App5 1 Appendix 6 Settings Check Sheet App6 1 Index Index 1 ...

Page 11: ...two current systems three phase three wire three current systems and three phase four wire systems Supports dual load systems in a single phase two wire single phase three wire or three phase three wire configuration except when in the Harmonics Measure mode Data Management Measured values or measurement settings can be stored in internal memory or on a 3 5 inch floppy disk inserted in an optional...

Page 12: ...t Optional Internal memory Storage of data and setup conditions Reading of setup conditions RS 232C interface for personal computer or printer Floppy disk drive unit connected externally Section 17 2 Event input function Section 14 3 External trigger function Section 14 2 Averaging function Section 7 6 Scaling function Section 7 7 Low pass filter function Section 7 5 Frequency measurement Wiring c...

Page 13: ...er factor Average load factor Indication During Demand Interval Maximum demand and its time Demand of one demand period earlier Electric energy integrated since the start of demand Electric energy integrated during the present demand period Power factor Load factor Remaining time of demand interval Table displays Voltage current Rms value harmonic content phase angle Total rms value All RMS Total ...

Page 14: ......

Page 15: ... N v2 L 1 2 3 4 N L N L N N L v3 L 1 N L N L N L 2 N L 3 N L 4 N F F F 2 3 F ENTER 4 F 5 1 INPUT OUTPUT START STOP Wh A W TOP MENU CLAMP ON POWER METER 184 7 24 65 2 56 206 8 11 Connector Block Front View Side View AC adapter jack Power switch ESC V LOCK KEY LIGHT Unit mm approx inches Battery charge LED indicator for optional NiMH battery ...

Page 16: ...ves the cursor through on screen data items so an item can be selected Cursor key Shows resets the voltage range You can change the setpoint with a function key V Range key Shows resets the current range You can change the setpoint with a function key A Range key Shows resets the setting of a wiring method You can change the setting with a function key Also see Checking Wiring Wiring key Changes t...

Page 17: ... 232C connector for printer personal computer Event input terminals D A output terminals optional External control trigger input terminals FDD RS 232C LOGIC INPUT START STOP D A OUTPUT CH CH CH CH Event input terminals Receive ON OFF signals from equipment under test External control input terminals Receive START STOP signals informing of the start and end of logging integration or demand measurem...

Page 18: ...ing off the circuit under test Be extremely careful not to connect any voltage mode circuit to the current input terminals or any current mode circuit to the voltage input terminals Miswiring can result in not only dam age to the circuit or equipment under test but also an injury to personnel The CW140 can be connect to a maximum of four voltage input probes or four current sensing clamps Do not c...

Page 19: ...xternal I O terminal using such a tool as a flat tip screwdriver Removing the screwdriver from the terminal fixes the signal wire in place CAUTION Do not apply voltages outside the allowable input voltage range 0 5 to 5 5 V otherwise the input circuit may be damaged When wiring the CW140 be careful not to mistake an input terminal for an output terminal Applicable Signal Wires Standard wire φ1 0 s...

Page 20: ... one of the terminals V1 to V3 satisfies the conditions noted above Indication of Overrange Marks When Auto ranging Is Used The CW140 steps up or down the range as discussed in Section 7 3 Ranges and Number of Digits Then the CW140 shows the or mark if the conditions noted above become true under the maximum range Indication of OR Symbol The CW140 shows the OR symbol instead of a usual four digit ...

Page 21: ... CW140 gives the readings noted below If a fixed range is used step down the range Reactive power 2 and apparent power Read zero 0 Power factor and phase angle Read as If the level of active power or reactive power is below 0 7 of the rating the reading is displayed as shown below Active power or reactive power Read zero 0 The integration stops In harmonics measurement the display reads as shown b...

Page 22: ... in internal memory Appears when the CW140 is configured so that data is stored on a floppy disk Appears when the CW140 is configured so that data is output to a printer Appears when the battery becomes low low battery mark Appears when an AC adapter is used Appears when the CW140 is in a key lock state TIP The Floppy Disk mark is only effective if an optional external floppy disk drive is used Th...

Page 23: ...input to the instrument Protection of Case and Operation Panel Do not spray any volatile chemical on the case or operation panel Do not leave any rubber or vinyl product in contact with the instrument for a prolonged period Otherwise the instrument may be discolored or deformed Cleaning When cleaning the case and or operation panel disconnect the power cord from the outlet Then wipe the surfaces o...

Page 24: ...ery pack from the instrument Precautions for Use of the Clamp CAUTION The clamping CT current transformer is precision assembled to ensure high performance When using the clamp do not apply any intense mechanical shock vibration or force to the clamping CT If dust or any other foreign matter gets in the clamping CT do not shut the clamping cores tight First remove the dust and then make sure the c...

Page 25: ... Location Do not install the instrument in an unstable or inclined location Otherwise this may result in the failure to obtain precision measurements Do not install the instrument in a location that is exposed to direct sunlight or close to a heat source close to such a noise source as high voltage equipment or a motive power supply exposed to a relatively large amount of lampblack steam dust or c...

Page 26: ... 600 V Current ratings 20 50 100 and 200 A Clamp A 96030 50 100 200 and 500 A Clamp C 96031 200 500 and 1000 A Clamp B 96032 If using an external VT voltage transformer or CT current transformer make sure the trans former can adequately withstand the voltage being measured Be careful not to allow the secondary stage of the CT to become open circuited while the CT is being electrified Otherwise a h...

Page 27: ...ut terminal shown on the CW140 main unit differs from that shown on the display as indicated in the figures above 1 N N V1 CH1 I1 Voltage input terminals Current input terminals On screen symbol Current sensing clamp S O U R C E L O A D 2 V2 CH2 I2 1 N N V1 CH1 I1 Voltage input terminals Current input terminals On screen symbol S O U R C E L O A D 3 R S T V3 CH3 I3 1 2 N V1 CH1 I1 Voltage input te...

Page 28: ... the power source side to the load side as indicated by the arrow WARNING In addition to using the checking wiring function be sure to verify the actual wiring connections 3 R S T V3 CH3 I3 CH2 I2 1 2 N V1 CH1 I1 Voltage input terminals Current input terminals On screen symbol S O U R C E L O A D N R S N 3 T V2 V3 CH3 I1 I3 CH2 I2 1 2 N V1 CH1 Voltage input terminals Current input terminals On scr...

Page 29: ...ut terminals S O U R C E L O A D 2 Current input terminals On screen symbol L O A D 1 2 V2 CH3 I1 2 CH4 I2 2 CH2 I2 1 1 N N V1 CH1 I1 Voltage input terminals S O U R C E L O A D 2 Current input terminals On screen symbol L O A D 1 R S T V3 3 CH3 I1 2 CH4 I3 2 CH2 I3 1 1 2 N V1 CH1 I1 Voltage input terminals S O U R C E L O A D 2 Current input terminals On screen symbol L O A D 1 ...

Page 30: ...xternal VT Then connect the secondary stage of the VT to the voltage input terminals If the maximum current level exceeds the following value attach an external CT Then connect the secondary stage of the CT to the current sensing clamp 200 A when clamp A 20 50 100 and 200 A is used 500 A when clamp C 50 100 200 and 500 A is used 1000 A when clamp B 200 500 and 1000 A is used Example of 1φ2W 1 N V1...

Page 31: ...ve polarities correctly positioned oth erwise the battery fluid may leak or the batteries may explode Do not disassemble the batteries heat them or throw them into a fire Do not short circuit the batteries Do not attempt to recharge the batteries Do not solder the batteries When replacing the batteries replace all of the six units at one time with new ones from the same manufacturer Do not use man...

Page 32: ...elow to replace alkaline batteries 1 Make sure the power switch on the CW140 is turned off and no AC adapter is connected 2 Remove the battery holder on the back of the CW140 3 Place six new alkaline batteries in the battery holder SEE ALSO The figure given below House the batteries with the positive and negative polarities of each battery positioned correctly 4 Hold the battery holder so that the...

Page 33: ...e the power source voltage matches the supply voltage rating of the AC adapter Before connecting the power cord also make sure the power switch on the CW140 is turned off If the CW140 is not to be used for a prolonged period disconnect the power cord from the outlet Do not use any other AC adapter than the one part number 788011 dedicated to the CW140 Do not place any load on the power cord or all...

Page 34: ...o the AC power outlet 3 Connect the AC adapter plug to the AC adapter jack of the CW140 4 Connect the plug of the power cord supplied together with the AC adapter to the power supply connector of the AC adapter 5 Connect the other end of the power cord to a power outlet that satisfies the power ratings requirements shown below Power Ratings of AC Adapter Supply voltage rating 100 to 240 V AC Allow...

Page 35: ...ight inside a vehicle under a blazing sun or near a fire Doing so may cause a solution leakage or deterio ration in the performance and or the service life of the battery pack Do not disassemble or modify the battery pack Doing so may damage the protective proper ties of the battery pack and cause it to heat up and rapture Do not short the battery electrodes as this may cause burns due to the batt...

Page 36: ...atteries are in use remove them from the battery holder and install the NiMH battery pack 4 Hold the battery holder so that the battery connector on the CW140 correctly mates with the battery holder connector Then slide the battery holder into the slot on the CW140 with the holder s two guides engaged in the groove of the slot Finally make sure both connectors are precisely mated with each other 5...

Page 37: ... to 35 C Recharging the battery pack outside this range may result in an insufficient amount of charge solution leakage or battery heating Procedure for Recharging the NiMH Battery Pack Follow the steps below to recharge the NiMH battery pack 1 With the battery pack installed as instructed earlier connect an AC adapter to the CW140 2 At this point keep the power switch on the CW140 turned off The ...

Page 38: ...elow a given level the mark appears in the upper right corner of the display low battery state If you continue to operate the CW140 in this state the meter automatically turns off If the low battery mark appears during measurement change the power supply to an AC source Wait until the CW140 finishes or aborts measurement and therefore is ready for shutdown before replacing the batteries with new o...

Page 39: ... Check Ok EEPROM OK Function Code 00000000 RTC Check Ok FDC Check Ok Setting Ok Flash Disk Ok 1 2 3 4 5 6 7 8 9 1 Indication of the model name and version 2 Result of SRAM test 3 Result of backup SRAM test 4 Result of EEPROM 5 Indication of function code 6 Result of RTC real time clock test 7 Result of floppy disk controller test 8 Result of checking setup data 9 Result of internal flash memory di...

Page 40: ...of low temperature and humidity to an area of high humidity and temperature or if there is a sudden change in the ambient temperature condensation may occur in the meter If this happens let the meter stand still for at least one hour to allow it to adapt to the new ambient temperature and for condensation to dissolve Then begin operating the meter Relationship between Clamp and Conductor 1 When pe...

Page 41: ...ith the most recently used settings Settings at end of last measurement Setting condition 1 Setting condition 2 Setting condition 3 Setting condition 4 Chapter 10 When you want to modify settings Setting Mode System settings Chapter 5 File handling Chapter 6 Measurement Mode Press key SETUP to make and modify settings each mode Calls up wiring settings Section 7 1 Calls up voltage range settings S...

Page 42: ...r 8 Electric energy measurement Chapter 9 Demand measurement Chapter 11 Harmonics measurement Chapter 12 Setting Mode See System settings Chapter 5 File handling Chapter 6 Top Menu Display and Selecting Modes Key operation The selected mode screen appears Retrieves the Top Menu Using the Cursor key select the desired mode It becomes highlighted T O P M E N U TIP You can also use the key to select ...

Page 43: ...etting details see Table System Settings on pages 5 2 and 5 3 Basic Operation for Setting Modification Key operation Retrieves the Top Menu System setting screen appears Using the Cursor key select the system setting It becomes highlighted Using the Cursor key select an item to set Using the function keys change the settings on screen 1 2 Press the F5 key to change the next screen Select system se...

Page 44: ...9 2 OFF Contrast LCD Section 17 1 Auxiliary Functions 4 Input values Adjusts LCD s contrast 1 to 8 Backlight LCD auto off when Section 17 1 Auxiliary Functions ON ON Auto off when no key action is performed for 10 minutes OFF Not used Power saving mode LCD Section 17 1 Auxiliary Functions OFF ON Used OFF Not used Beep Section 17 1 Auxiliary Functions ON ON Beeps for every key action OFF Not used C...

Page 45: ... RS Parity Section 15 1 RS 232C Interface Specifications None Select to highlight the desired setting Selects the item to be changed Year Month Day Time Stop bit Section 15 1 RS 232C Interface Specifications Section 15 3 Handshaking Methods 1 bit 1200 2400 4800 9600 19200 bps For printer OFF OFF XON XOFF XON RS CS RS For PC Input values Screen Item Items to be selected See also Default Displays th...

Page 46: ...elect to highlight the system settings Select the system reset It becomes highlighted SYSTEM SET A message requesting confirmation appears SYSTEM RESET T O P M E N U System Reset System reset confirmation screen ESC Executes system reset All parameters will be initialized to default Proceed Enter key YES ESC key NO Press the key to cancel execution of system reset and to return to the previous scr...

Page 47: ...becomes highlighted Select a desired item It becomes highlighted The respective screen T O P M E N U SEE ALSO For details on making settings see Table File Handling Items File Handling Items Change file name Renames a saved file Delete file Deletes a saved file FD format Formats a floppy disk Memory format Formats internal memory Data copy Copies a file in internal memory to a floppy disk Program ...

Page 48: ...lection of all files NEXT screen Select media Selects a file to rename Enter a new name Refer to Section 6 3 Asterisk is displayed on the left of selected file Formats memory Selected file will be deleted Delete confirmation screen appears FD format Format FD Select capacity type Memory format Format internal memory ENTER key YES ESC key NO Now formatting Format complete ENTER key OK Format FD _MB...

Page 49: ...ppears Item Description Message File Description File attribute WTH001 SET File name 2000 01 01 Date Year Month Day 00 00 Time WTH Example SEE ALSO For more about file names and attributes see Section 6 2 How to Select Specify File Using the Cursor key select a file It becomes highlighted Press the F1 key to confirm the selection Asterisk is displayed on the left of selected file A message request...

Page 50: ...le Name AINSXXX CSV AWTHXXX CSV ADEMXXX CSV AHRMXXX CSV File Attribute AINS AWTH ADEM AHRM Saving Data with File Functions in Each Mode see also Chapter 13 File Functions Saving and Loading On screen Readings DISP VAL Measurement Mode Instant Measure mode Electric Energy Measure mode Demand Measure mode Harmonics Measure mode File Name DINSXXX CSV DWTHXXX CSV DDEMXXX CSV DHRMXXX CSV File Attribute...

Page 51: ...d BS Backspace Deletes a character immediately before the cursor Moves the cursor in the file name field one character to the left Moves the cursor in the file name field one character to the right Entering a File Name Use this key to select a character INPUT Places each selected character in the file name field The cursor moves to the right Repeat step above for up to 8 characters Press this key ...

Page 52: ...g The following message appears Same file name already exists Overwrite Enter key YES ESC key NO Press this key to overwrite the existing file Press this key to cancel ESC If you do not want to overwrite the existing file enter another file name 6 3 Entering a File Name ...

Page 53: ...splayed to show the input terminals of the voltage probe and current sensing clamp Wiring Voltage RMS Input Current RMS Input 1φ2W V1 I1 CH1 1φ3W V1 V2 I1 I2 CH1 CH2 3φ3W V1 V3 I1 I3 CH1 CH3 3φ3W3i V1 V3 I1 I2 I3 CH1 CH2 CH3 3φ4W V1 V2 V3 I1 I2 I3 CH1 CH2 CH3 2 system load Wiring Voltage RMS Input Load Current RMS Input 1φ2W 2 V1 Load 1 I1 1 CH1 Load 2 I1 2 CH2 1φ3W 2 V1 V2 Load 1 I1 1 CH1 I2 1 CH...

Page 54: ...he labels back to Select the power line type to proceed to the wiring check To check See Section 7 2 Checking Wiring To not check Return to the measurement screen NOTE The type of wiring cannot be changed during continuous measurement It also cannot be changed when in electric energy mode and the elapsed time PASSAGE TIME is not at zero or in demand mode and the remaining time DEMAND RESTTIME is n...

Page 55: ...Items The following items will be checked and judged and then the results of each item will be displayed as either OK or NG VOLTAGE INPUT CURRENT INPUT VOLT PHASE SEQUENCE for three phase only CLAMP DIRECTION ERR FREQUENCY SOURCE SEE ALSO Page 7 5 Check Items NOTE Measurement is not performed while wiring is being checked D A output is 0 V Voltage and current ranges are set to AUTO while wiring is...

Page 56: ... the check of each item as OK or NG Check List CHECK ITEM RESULT VOLTAGE INPUT OK CRRENT INPUT OK VOLT PHASE SEQUENCE OK CLAMP DIRECTION ERR NG FREQUENCY SOURCE OK CHECK END CHECK when checking If all check results are OK press the END key to return to the measurement screen and proceed to measurement If one or more check results are NG press CHECK Press this key to check the wiring again after an...

Page 57: ...more than 140 or less than approximately 100 The active power is 0 17 or less of the rated voltage Power for one or more phases is negative The power for the whole three phase three wire line is negative This does not apply when regenerative energy is used Frequency measurement is unstable Input frequency is 40 Hz or less or 1 2 kHz or more No voltage input Check VOLTAGE CLIP connection No current...

Page 58: ...below Press the corresponding function key to select the desired range 150V 300V 600V AUTO Current Range Selecting Clamp Type Clamp A Model 96030 Fixed ranges 20 A 50 A 100 A and 200 A Clamp C Model 96031 Fixed ranges 50 A 100 A 200 A and 500 A Clamp B Model 96032 Fixed ranges 200 A 500 A and 1000 A Selecting between clamp type A B and C can be made on the last page for each mode or the system set...

Page 59: ...lue when the START STOP key is pressed TIP Ranges cannot be changed during continuous measurement It also cannot be changed when in electric energy mode and the elapsed time PASSAGE TIME is not at zero or in demand mode and the remaining time DEMAND REST TIME is not at zero Be sure to press the key for 3 seconds or more and then clear the integrated value before changing the ranges Use of AUTO Ran...

Page 60: ...0 kW 150 0kW 300 0kW 1φ3W 12 00 kW 30 00 kW 60 00 kW 120 0 kW 300 0kW 600 0kW 3φ3W 12 00 kW 30 00 kW 60 00 kW 120 0 kW 300 0kW 600 0kW 3φ4W 18 00 kW 45 00 kW 90 00 kW 180 0 kW 450 0kW 900 0kW 1φ2W 12 00 kW 30 00 kW 60 00 kW 120 0 kW 300 0kW 600 0kW 1φ3W 24 00 kW 60 00 kW 120 0 kW 240 0 kW 600 0kW 1200kW 3φ3W 24 00 kW 60 00 kW 120 0 kW 240 0 kW 600 0kW 1200kW 3φ4W 36 00 kW 90 00 kW 180 0 kW 360 0 k...

Page 61: ...0 to 999 9 V 999 9 V 1 to 9 999 kV 9 999 kV 10 to 99 99 kV 99 99 kV 100 to 999 9 kV 999 9 kV 1 to 6 MV 6 000 MV Current Range CT ratio Position of decimal point and unit of measurement 200 to 999 9 mA 999 9 mA 1 to 9 999 A 9 999 A 10 to 99 99 A 99 99 A 100 to 999 9 A 999 9 A 1 to 9 999 kA 9 999 kA 10 to 99 99 kA 99 99 kA 100 to 999 9 kA 999 9 kA 1 to 9 999 MA 9 999 MA 10 to 99 99 MA 99 99 MA Frequ...

Page 62: ...mal point and unit of measurement are automatically set following table 1 to 9 999 W 0 00 to 9999 99 Wh 10 to 99 99 W 0 0 to 99999 9 Wh 100 to 999 9 W 0 000 to 999 999 kWh 1 to 9 999 kW 0 00 to 9999 99 kWh 10 to 99 99 kW 0 0 to 99999 9 kWh 100 to 999 9 kW 0 000 to 999 999 MWh 1 to 9 999 MW 0 00 to 9999 99 MWh 10 to 99 99 MW 0 0 to 99999 9 MWh 100 to 999 9 MW 0 000 to 999 999 GWh 1 to 9 999 GW 0 00...

Page 63: ...ge Switching to upper range For RMS value When the RMS value becomes 110 or more of the rated range For sampled value When the sampled value becomes 300 or more of the rated range Switching to lower range For RMS value When the RMS value becomes 30 or less of the rated range For sampled value When the sampled value becomes about 300 or more of the rated range lower range after switching as a resul...

Page 64: ... 7 3 Ranges and Number of Digits Switching voltage ranges in AUTO range RMS Voltage range Input voltage 600V 180V 90V 300V 150V 0 100V 60V 30V 15V 200V 300V To upper range 600V 330V To lower range 400V 500V 600V 165V ...

Page 65: ...A 100A 200A 500A 100A 200A 300A 400A RMS 0 Input current 500A Current range 550A 220A 150A 60A 30A 110A 55A 5A 10A 20A 50A 200A 100A 50A Clamp C 50A 100A 200A 500A 1000A 200A 400A 600A 800A RMS 0 Input current 1000A Current range 1000A 550A 300A 150A 220A 20A 50A 100A 500A 200A Clamp B 200A 500A 1000A within 5 minutes 700A TIP During switching the value will be temporarily displayed 7 3 Ranges and...

Page 66: ...t Zero crossing signal V1 Sine wave The integration period synchronizes with the zero crossing signal of the frequency measurement input and is defined as a time period which begins with fixed time 100 ms and ends with the next leading edge of the zero crossing signal The voltage and current RMS power and reactive power when only the reactive power method is used values are calculated during the i...

Page 67: ...ent input Zero crossing signal V1 Sine wave The sampling period synchronizes with the zero crossing signal of the frequency measurement input a PLL Two periods worth of samples i e 512 samples are used to perform the calculation of harmonic parameters TIP In the examples shown above the waves are sine waves 50 Hz generated by using the voltage input V1 7 4 Sampling Frequencies and Integration Peri...

Page 68: ...e wiring setting Key operation The frequency source can be set on page 1 2 of the system setting screen or the last page of setup screen in each measurement mode by pressing the key Example Instant mode SETUP Press this key on the Instant mode NEXT Press this key to select page 2 3 of setup screen NEXT Press this key again to select page 3 3 of setup screen Using the Cursor key select the frequenc...

Page 69: ...lter cuts off frequencies of 300 Hz or lower Key operation As with frequency source setting the low pass filter can be set on page 1 2 of the system setting screen or on the last page of the setup screen in each measurement mode by pressing the key The default value is OFF Using the Cursor key select the item Low pass filter ON Press either key to select the desired setting OFF Confirms the select...

Page 70: ...m Number of averaging cycles to be set Mn Measured value at nth measurement Dn Moving average at nth measurement on screen reading m cycles TIP The averaging function cannot be used when in harmonics measure mode because the sampling method used in this mode is different from other modes For integrated values of electric power and demand the averaging function does not work even if it is set to on...

Page 71: ...00 CT ratio 0 01 to 10000 Example If VT 2200 V 110 V 20 1 then set VT ratio to 20 If CT 100 A 5 A 20 1 then set CT ratio to 20 Display Value Voltage Voltage range VT ratio Current Current range CT ratio Power Rated power VT ratio CT ratio If VT or CT ratio is set to a value other than 1 the mark is displayed in the upper left corner of the screen SEE ALSO For the settings of VT and CT ratios see p...

Page 72: ......

Page 73: ...y Calculated data items Reactive power 2 apparent power power factor phase angle and three phase unbalance factor SEE ALSO Section 8 6 Computational Expressions for details on the computational expressions Selection of Reactive Power Method Reactive power 1 With reactive power meter method Reactive power 2 Without reactive power meter method SEE ALSO Section 8 6 Computational Expressions for detai...

Page 74: ...OP MENU screen The Instant Measure Mode screen appears Display of measured calculated values Display of setup conditions Using the cursor key select INSTANT MEASURE Then press the key Three phase Unbalance Factor This data item is shown only when a three phase wiring method is applied The frequency range is specified as 45 to 440 Hz ...

Page 75: ...y relevant function key F SOURCE field Shows the input signal whose frequency is being measured To change the setting of the data item Frequency Source select the Instant Setting screen by pressing the SETUP key Then press the key twice to show page 3 3 of the screen The default value is V1 Now change the setting and press the CHANGE key FREQUENCY SOURCE V1 V2 V3 I1 I2 I3 Press the key SEE ALSO Pa...

Page 76: ...and 3 3 of the Instant Setting screen Selects from the data items to Changes or sets the value NEXT Moves to the next page screen Confirms the setting ESC Cancels the setting FILE Enables you to use the file functions see Chapter 13 File Functions LOAD Reads a file from internal memory floppy disk SAVE Saves a file in internal memory on floppy disk PRINT Prints data DISP VAL SET ITEM and SETUP dat...

Page 77: ...show an expanded view of them Press the SETUP key to show the Instant Setting screen UPPER V1 MIDDLE I1 LOWER P DISP ITEM V1 V2 V3 I1 I2 I3 P Q VA Default view ESC Press the key to confirm your selection Use the key to select a data item to be changed Use the key to select a data item to be displayed Press the to cancel the procedure of change Press the CHANGE key to change the data item ...

Page 78: ...cy UR Three phase unbalance factor UPPER MIDDLE LOWER TIP The choice of data items V1 to V3 and I1 to I3 varies depending on the type of wiring If the CW140 is wired to a 2 load system the same data item is selected for both loads If you change the wiring type and the selected data item is not identified as an actual input on the wiring the default data item is selected 8 3 Expanded View of Data I...

Page 79: ... taken from the start to the end of logging TRIGGER Control Allows you to control logging by inputting a signal to the START STOP input terminals MANUAL Allows you to stop logging by pressing the key The default for this key is Manual Setting the time Use the key to move through the fields of the date and time setting as shown below 2000 01 01 hour minute Year Month Day Hour Minute Increment Decre...

Page 80: ...ndicator comes on LED indicator goes out LED indicator comes on Ready for logging STANDBY Ready for logging STANDBY Logging in progress Press START STOP key to begin logging Scheduled starting time of logging TIP The changing of settings is not allowed during logging viewing only The setting of a time earlier than the current time is not allowed In addition the CW140 shows an error message if afte...

Page 81: ... paragraph explains how to output data acquired during an interval from the start to the end of logging You can change define settings related to data output by pressing the SETUP key in the Instant Measure mode Logging Setting LOGGING Select from the ON and OFF options Condition Settings for Data Output with LOGGING set to ON OUTPUT INTERVAL Set a value between 2 minutes and 1000 hours in 1 minut...

Page 82: ...ion is used Logging is set to ON Page 1 3 EXPAND Disply item Logging Logging start Logging stop Output interval Page 2 3 Output medium Filename Items to be saved printed D A output Page 3 3 Reactive power method Frequency source Low pass filter VT ratio CT ratio Clamp selection Number of averaging cycles TIP The D A output setup data item on the Instant Setting screen page 2 3 is visible only if t...

Page 83: ...he functionality corresponding to each function key varies depending on the selected setup data item Press the key to make changes to the next page Pressing the key completes your settings The display changes to a measurement screen If none of the settings needs to be changed press the ESC key The display changes to a measurement screen TIP The changing of settings is not allowed when the CW140 is...

Page 84: ...Enters a name of no more than 8 alphanumeric characters Not designated Named automatically as shown below AINS XXX CSV 000 to 999 Select from these options with the ON and OFF keys OUTPUT MEDIA Only effective if LOGGING is set to ON MEMORY When setting the time Increment Decrement Input a value Lets you move through the fields of the date and time setting Year Month Day Hour When setting the timer...

Page 85: ... OFF 2 3 10 OFF Cycles through OFF 10 9 2 OFF Section 7 6 Averaging Function NUMBER OF AVERAGE OFF The averaging function is not used Increment Decrement Input a value Section 7 7 Scaling Function VT RATIO Ratio of voltage transformation 1 Selects the channel Selects the desired option Moves the cursor through the digits Select between ON and OFF under each of the VOLTAGE CURRENT POWER and EVENT I...

Page 86: ...arent power power factor phase angle frequency 3φ3W3i Voltage V1 V3 Unbalance factor Current I1 I2 I3 Power Active power reactive power apparent power power factor phase angle frequency 3φ4W Voltage V1 V2 V3 Unbalance factor Current I1 I2 I3 Power Active power reactive power apparent power power factor phase angle frequency Event input Status H L of event input Wiring Group Saved Printed Items The...

Page 87: ... T T 1 t 0 i t 2 Active Power P T T 1 0 v t i t dt T T 1 t 0 v t i t Reactive Power With reactive power meter method Q T T 1 0 v t i t dt T T 1 4 T 4 T t 0 v t i t v t i t Input signal T One period input signal Polarity Lag Lead Three phase Unbalance Factor Va Vb 100 Unbalance foctor For 3φ3W Vs V12 V23 V31 2 1 line to line voltages for the 3φ3W For 3φ4W In the equations V12 V23 V31 for the 3φ3W a...

Page 88: ...VA2 If the reactive power method is used If the reactive power method is not used cos 1 P VA Q VA 2 P2 VAi Vi Ai i 1 3 VA 3 2 VA1 VA3 VA V A With reactive power meter P 2 Q 2 Without reactive power meter P VA 3φ3W3i 3φ4W Limits of computation 1 to 1 180 to 180 Read out resolution P P Reactive Power 2 Without reactive power meter method Apparent Power Power Factor Phase Angle P P2 Q2 cos 1 P P2 Q2 ...

Page 89: ...o indicate the regenerative energy Press the SETUP key in the Electric Energy Measure mode to show page 1 3 of the setting screen Select the ON or OFF option Default OFF Not indicated Display of Information on Integration The CW140 shows the and marks in the upper middle area of the display It also shows information on the start and end of integration in the lower section of the display Informatio...

Page 90: ... 0 to 99999 9 Wh 100 to 999 9 W 0 000 to 999 999 kWh 1 to 9 999 kW 0 00 to 9999 99 kWh 10 to 99 99 kW 0 0 to 99999 9 kWh 100 to 999 9 kW 0 000 to 999 999 MWh 1 to 9 999 MW 0 00 to 9999 99 MWh 10 to 99 99 MW 0 0 to 99999 9 MWh 100 to 999 9 MW 0 000 to 999 999 GWh 1 to 9 999 GW 0 00 to 9999 99 GWh 10 to 99 99 GW 0 0 to 99999 9 GWh 100 to 999 9 MW 0 to 999999 GWh 1 to 9 999 TW 0 to 999999 GWh 10 to 9...

Page 91: ... SAVE Saves a file in internal memory on floppy disk PRINT Prints data DISP VAL SET ITEM and SETUP data items LOAD_CHG Switches between Load 1 and Load 2 if the wiring is for a 2 load system HOLD CLR Holds the on screen readings or clears the integrated values Holding The screen shows the mark in the upper middle area of the display Only the hold function is available during integration Clearing H...

Page 92: ...the end of integration TRIGGER Control Allows you to control integration by inputting a signal to the START STOP input terminals MANUAL Allows you to stop integration by pressing the key The default for this key is Manual Setting the time Use the key to move through the fields of the date and time setting as shown below 2000 01 01 hour minute Year Month Day Hour Minute Increment Decrement Input a ...

Page 93: ...ator comes on LED indicator goes out LED indicator comes on Ready for integration STANDBY Ready for integration STANDBY Integration in progress Press the START STOP key to begin integration Scheduled starting time of integration TIP The changing of settings is not allowed during integration viewing only The setting of a time that precedes the current time is not allowed In addition the CW140 shows...

Page 94: ...UT set to ON OUTPUT INTERVAL Set a value between 2 minutes and 1000 hours in 1 minute increments OUTPUT MEDIA Select MEMORY to save in internal memory FD to save on a floppy disk or PRINTER to print FILENAME Type the file name of data to be saved SAVE PRINT ITEM Select the data item to be saved or printed SEE ALSO Section 9 4 Setup Data Items of Electric Energy Measure Mode for details on the setu...

Page 95: ...start Integration stop Data output Output interval Output medium Filename Shown only if DATA OUTPUT is set to ON Page 2 3 Items to be saved printed D A output Integrated value output rate Display of Electric energy Page 3 3 Reactive power method Frequency source Low pass filter VT ratio CT ratio Clamp selection Number of averaging cycles TIP The D A output setup data item on the Energy Setting scr...

Page 96: ...orresponding to each function key varies depending on the selected setup data item Press the key to make changes to the next page Pressing the key completes your settings The display changes to a measurement screen If none of the settings needs to be changed press the ESC key The display changes to a measurement screen TIP The changing of settings is not allowed when the CW140 is in a stand by sta...

Page 97: ...o ON MEMORY When setting the time Increment Decrement Input a value Lets you move through the fields of the date and time setting Year Month Day Hour When setting the timer Increment Decrement Input a value Lets you move through the fields of the time setting to set a value in 10 second increments to a maximum of 1000 hours OUTPUT INTERVAL Only effective if DATA OUTPUT is set to ON 30 min Only eff...

Page 98: ... from among CH1 to CH4 Shows options in the middle of the screen Page Setup Data Item Items to Be Selected See Also Default Confirms the selection Confirms the selection INTEGRATION RATE If D A output is enabled ENERGY DISPLAY 1 V 5 kWh kWh Selects the rate Pressing the key shows a screen for rate selection 1 V 5 kWh 1 V 10 kWh 1 V 50 kWh 1 V 100 kWh 1 V 500 kWh 1 V 1 MWh Confirms the selection Se...

Page 99: ...00 1000 A Clamp B 50 500 A Clamp C Selecting Clamp Type under Current Range on page 7 6 CLAMP SELECTION 20 200 A Clamp A Cycles through OFF 2 3 10 OFF Cycles through OFF 10 9 2 OFF Section 7 6 Averaging Function NUMBER OF AVERAGE OFF The averaging function is not used Increment Decrement Input a value Section 7 7 Scaling Function VT RATIO Ratio of voltage transformation 1 Selects the desired optio...

Page 100: ... regenerative energy lagging reactive electric energy leading reactive electric energy 1φ3W Voltage V1 V2 V3 3φ3W Current I1 I2 I3 Power Active power reactive power apparent power power factor phase angle frequency Electric energy Active electric energy regenerative energy lagging reactive electric energy leading reactive electric energy 3φ3W3i Voltage V1 V3 Current I1 I2 I3 Power Active power rea...

Page 101: ...key select the ON or OFF option Default All items are set to ON ON OFF When wired to a 2 load system ON 1 Load 1 only ON 2 Load 2 only ALL both Loads 1 and 2 OFF TIP Even if you set data items to be saved printed they are not saved printed if the DATA OUTPUT setup data item is set to OFF 9 4 Setup Data Items of Electric Energy Measure Mode ...

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Page 103: ...NG CONDITION screens 1 to 4 are the same as those of the setup data items of the Electric Energy Measure mode except for the wiring settings shown below SETTING CONDITION 1 SETTING CONDITION 2 SETTING CONDITION 3 SETTING CONDITION 4 1φ2W 1φ3W 3φ3W 3φ4W SEE ALSO Section 9 4 Setup Data Items of Electric Energy Measure Mode Information of Each Setting Pressing the key shows a screen of condition sett...

Page 104: ... and other data items necessary for electric energy measurement Measurement Display the setup conditions screen necessary to perform your measurement Pressing the MEASURE key changes to a measurement screen The actual procedure of this measurement is the same as that of electric energy measurement discussed in Chapter 9 For details on how to set change such settings as the start end of integration...

Page 105: ...C Pressing the key cancels the changes you made The current setup conditions remain the same as before and the display returns to a screen of the current setup conditions These data items are highlighted in sequence Pressing any of the to keys moves the cursor to the next field If no change needs to be made press the key to move to the next data item This completes the procedure The display return...

Page 106: ...INT ITEM field of the SETTING CONTENTS screen Symbol V I P Wh EV Group of Items Voltage Current Power Electric energy Event input SEE ALSO Data Items to Be Saved Printed in the paragraph Setup Data Items of Electric Energy Measure Mode on page 9 12 10 1 Simple Electric Energy Measurement with Key ...

Page 107: ...art of demand End of demand Period Total demand n n 1 6 5 4 3 2 1 Current time TIP Even if the demand ceases during a demand period the measured value is not numerically affected at all since the CW140 calculates average power by dividing it by a time length Reference Power You can set a value of reference power between 1 and 1000 kW See Section 11 5 Setup Data Items of Demand Measure Mode If the ...

Page 108: ...r Average load factor Load factor When the reactive power method is used the average power factor is not multiplied by a polarity sign Demand power Reference power Display of Electric Energy Value Display of Electric Energy of following two items can select the position of decimal point and unit of measurement TOTAL Electric Energy since the start of demand PERIOD Electric Energy of demand period ...

Page 109: ...nd measurement or how it starts or stops demand measurement If you want to show the setup conditions WIRING V RANGE A RANGE and FREQUENCY SOURCE data items in the demand information area press the or key Pressing the same key once again or pressing the or ESC key returns to a view of demand measurement information Demand Measure Mode Screen Press the key to show the TOP MENU screen The Dmand Measu...

Page 110: ...the file functions see Chapter 13 File Functions LOAD Reads a file from internal memory floppy disk SAVE Saves a file in internal memory on floppy disk PRINT Prints data DISP VAL SET ITEM and SETUP data items LOAD_CHG Switches between Load 1 and Load 2 if the wiring is for a 2 load system HOLD CLR Holds the on screen readings or clears the integrated values Holding The screen shows the mark in the...

Page 111: ...the start to the end of demand TRIGGER Control Allows you to control demand by inputting a signal to the START STOP input terminals MANUAL Allows you to stop demand by pressing the key The default for this key is Manual Setting the time Use the key to move through the fields of the date and time setting as shown below 2000 01 01 hour minute Year Month Day Hour Minute Increment Decrement Input a va...

Page 112: ...goes out LED indicator comes on Ready for demand STANDBY Ready for demand STANDBY Demand in progress Press the START STOP key to begin demand measurement Scheduled starting time of demand measurement TIP The changing of settings is not allowed during demand measurement viewing only The setting of a time that precedes the current time is not allowed In addition the CW140 shows an error message if a...

Page 113: ...VAL Same as the demand period setpoint no setup data item is shown For the demand period select from 5 10 15 and 30 minutes or 1 2 3 4 6 8 10 and 12 hours OUTPUT MEDIA Select MEMORY to save in internal memory FD to save on a floppy disk or PRINTER to print FILENAME Type the file name of data to be saved SAVE PRINT ITEM Select the data item to be saved or printed SEE ALSO Section 11 5 Setup Data It...

Page 114: ...ut Output medium Filename Shown only if Data output is set to ON Page 2 3 Items to be saved printed D A output Integrated value output rate Total of electric energy Electric energy of demand period Page 3 3 Reactive power method Frequency source Low pass filter VT ratio CT ratio Clamp selection Number of averaging cycles TIP The D A output setup data items on Demand Setting screen page 2 3 are vis...

Page 115: ...the relevant key to change the setting The functionality corresponding to each function key varies depending on the selected setup data item Press the key to make changes to the next page Pressing the key completes your settings The display changes to a measurement screen If none of the settings needs to be changed press the ESC key The display changes to a measurement screen TIP The changing of s...

Page 116: ...e Increment Decrement Input a value Lets you move through the fields of the date and time setting Year Month Day Hour When setting the timer Increment Decrement Input a value Lets you move through the fields of the time setting to set a value in 10 second increments to a maximum of 1000 hours TIME TIMER TRIGGER MANUAL MEMORY FD PRINTER Designated Hour and no of digits Minute Second DATA OUTPUT OFF...

Page 117: ...n INTEGRATION RATE If D A output is enabled TOTAL ENERGY 1 V 5 kWh Selects the rate Pressing the key shows a screen for rate selection 1 V 5 kWh 1 V 10 kWh 1 V 50 kWh 1 V 100 kWh 1 V 500 kWh 1 V 1 MWh STANDARD kWh Confirms the selection Select the position of decimal point Pressing the key shows a screen for selection STANDARD 000 000 0000 00 00000 0 000000 Position of decimal point Unit of measur...

Page 118: ...B 50 500 A Clamp C Selecting Clamp Type under Current Range on page 7 6 CLAMP SELECTION 20 200 A Clamp A Cycles through OFF 2 3 10 OFF Cycles through OFF 10 9 2 OFF Section 7 6 Averaging Function NUMBER OF AVERAGE OFF The averaging function is not used Increment Decrement Input a value Section 7 7 Scaling Function VT RATIO Ratio of voltage transformation 1 Selects the desired option Moves the curs...

Page 119: ...er demand 1φ3W Voltage V1 V2 V3 3φ3W Current I1 I2 I3 Power Active power reactive power apparent power power factor phase angle frequency Electric energy Active electric energy Demand Power demand maximum power demand 3φ3W3i Voltage V1 V3 Current I1 I2 I3 Power Active power reactive power apparent power power factor phase angle frequency Electric energy Active electric energy Demand Power demand m...

Page 120: ...ct the ON or OFF option Default All items are set to ON ON OFF When wired to a 2 load system ON 1 Load 1 only ON 2 Load 2 only ALL both Loads 1 and 2 OFF TIP Even if you set data items to be saved printed they are not saved printed if the DATA OUTPUT setup data item is set to OFF 11 5 Setup Data Items of Demand Measure Mode ...

Page 121: ...ENT Data Item Is Voltage or Current Rms value V Content Phase angle Rms value A Data items for table Data items for section marked 1 below Total ALL rms value V Total Harmonic Distortion Total ALL rms value A Distortion factors IEEE and CSA Fundamental wave frequency Hz When the MEASURE ELEMENT Data Item Is Power Power value V Content Phase angle Data items for table Data items for section marked ...

Page 122: ...n appears With the key select from the following options of the ELEMENT field With the key you can select between the DISPLAY and NO DISPLAY options of the LOGGING field V1 V2 V3 I1 NEXT DISPLAY NO DISPLAY I2 I3 P NEXT Available options differ depending on the type of wiring Press the key to cancel the selection After selection press the key to confirm the selection The display shows a table TIP T...

Page 123: ...r appropriate for the order of harmonic Fundamental wave frequency Hz This field shows the height of a selected bar in the bar graph of 1st through 13th order harmonics With the key you can change the order of harmonic from 1st through 13th This field shows a value appropriate for the selected order Options of MEASURE ELEMENT data item Voltages V1 to V3 Selected using the WIRING data item Currents...

Page 124: ...em Is Voltage or Current POWER CONTENT PHASE When the MEASURE ELEMENT Data Item Is Power ESC With the key you can select between the DISPLAY and NO DISPLAY options of the LOGGING field DISPLAY NO DISPLAY Press the key to cancel the selection After selection press the key to confirm the selection The display shows a table With the key select from the following options of the ELEMENT field With the ...

Page 125: ... screen Selects from the data items to Changes or sets the value NEXT Moves to the next page screen Confirms the setting ESC Cancels the setting FILE Enables you to use the file functions see Chapter 13 File Functions LOAD Reads a file from internal memory floppy disk SAVE Saves a file in internal memory on floppy disk PRINT Prints data DISP VAL SET ITEM and SETUP data items If labeled as TABLE Ch...

Page 126: ...om the start to the end of logging TRIGGER Control Allows you to control logging by inputting a signal to the START STOP input terminals MANUAL Allows you to stop logging by pressing the key The default for this key is Manual Setting the time Use the key to move through the fields of the date and time setting as shown below 2000 01 01 hour minute Year Month Day Hour Minute Increment Decrement Inpu...

Page 127: ...cator 2 3 LED indicator comes on LED indicator goes out LED indicator comes on Ready for logging STANDBY Ready for logging STANDBY Logging in progress Press START STOP key to begin logging Scheduled starting time of logging TIP The changing of settings is not allowed during logging viewing only The setting of a time earlier than the current time is not allowed In addition the CW140 shows an error ...

Page 128: ...xplains how to output data acquired during an interval from the start to the end of logging You can change define settings related to data output by pressing the SETUP key in the Instant Measure mode Logging Setting LOGGING Select from the ON and OFF options Condition Settings for Data Output with LOGGING set to ON OUTPUT INTERVAL Set a value between 2 minutes and 1000 hours in 1 minute increments...

Page 129: ... setup data items as shown below Page 1 2 Logging Logging start Logging stop Output interval Output medium Filename Items to be saved printed D A output Shown only if LOGGING is set to ON Page 2 2 Reactive power method Frequency source Low pass filter VT ratio CT ratio Clamp selection TIP The D A output setup data item on the Instant Setting screen page 1 2 is visible only if the CW140 is equipped...

Page 130: ...lity corresponding to each function key varies depending on the selected setup data item Press the key to make changes to the next page Pressing the key completes your settings The display changes to a measurement screen If none of the settings needs to be changed press the ESC key The display changes to a measurement screen TIP The changing of settings is not allowed when the CW140 is in a stand ...

Page 131: ...MEMORY When setting the time Increment Decrement Input a value Lets you move through the fields of the date and time setting Year Month Day Hour When setting the timer Increment Decrement Input a value Lets you move through the fields of the time setting to set a value in 10 second increments to a maximum of 1000 hours OUTPUT INTERVAL Only effective if LOGGING is set to ON 30 min Only effective if...

Page 132: ...ange on page 7 6 CLAMP SELECTION 20 200 A Clamp A Increment Decrement Input a value Section 7 7 Scaling Function VT RATIO Ratio of voltage transformation 1 Selects the desired option Moves the cursor through the digits Set to a value between 1 and 10000 Increment Decrement Input a value Section 7 7 Scaling Function CT RATIO Ratio of current transformation 1 Set to a value between 0 01 and 10000 Pa...

Page 133: ... ORDER ALL P F EVENT INPUT THD IEEE CSA Display each page of the screen with the NEXT key as explained below Page 1 2 NEXT Page 2 2 NEXT Changing the Settings Page 1 2 of the screen SELECT ITEM Default ON RMS CONTENT PHASE ALL RMS VOLT ON ON ON ON AMP ON ON ON ON POWER CONTENT PHASE ALL POW POWER ON ON ON ON SELECT ELEMENT Default ON V1 V2 V3 I1 I2 I3 P ON ON ON ON ON ON ON Information provided by...

Page 134: ...Change the setting With the key select the order whose setting you want to change ON OFF Change the setting The default of all four data items is ON as shown below ALL P F ON EVENT INPUT ON THD IEEE ON THD CSA ON With the key select the order whose setting you want to change TIP Even if you set data items to be saved printed they are not saved printed if the LOGGING setup data item is set to OFF Y...

Page 135: ...S 2 THD CSA nth order harmonic voltage current RMS 2 nth order active power fundamental wave active power nth order harmonic voltage current RMS 2 Voltage RMS Current RMS RMS nth order content RMS phase angle Total Harmonic Distortion content IEEE Total harmonic distortion content CSA Power Power nth order content Power phase angle 1φ2W Pn Vnr Anr Vni Ani 1φ3W Pn P1n P2n 3φ3W Pn P1n P3n 3φ4W Pn P1...

Page 136: ...alyze the nth order harmonic components as follows nth order harmonic voltage RMS Vn Vnr Vni nth order harmonic current RMS An Anr Ani n Number of orders Vnr Anr Real number components following FFT calculation Vni Ani Imaginary number components following FFT calculation P1n P3n Active power element of nth order Q1n Q3n Reactive power element of nth order RMS phase angle Phase angle of nth order ...

Page 137: ...0 0 The phase lag or lead means that of current in reference to voltage Direction of harmonic current The direction of harmonic current can be identified according to the polarity of power as shown below If the polarity of power is positive the current is flowing inward If the polarity of power is negative the current is flowing outward TIP The CW140 calculates the Harmonics Measure mode total rms...

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Page 139: ...nt with external printer mark is displayed Printed Contents DISP VAL On screen readings which are being held SET ITEM Measurement data items SET UP Measurement condition settings Load Save Print TIP Note that data are saved printed only for the options of the SAVE PRINT ITEM which were set to ON Saving printing readings If you use the file functions to save print the readings without holding the s...

Page 140: ...file to load Use this key to select a file NEXT Press this key to go to the next page when there is more than one screen Press this key to begin loading the file When selecting DISP VAL the data values are displayed and updating stops When pressing the NEXT key the screen returns to the state before loading was selected When selecting SET UP the current settings are updated with the new settings T...

Page 141: ...t DISP VAL SET ITEM or SET UP Enter a file name The file name can consist of up to 8 alphanumeric characters including symbols If you do not enter any file name the CW140 automatically names the file You simply press the key on Entering a File Name screen For further details about entering a file name Entering a File Name Press this key to save the file SEE ALSO Section 6 2 File Name and File Attr...

Page 142: ... The following message appears Select data to print Select DISP VAL SET ITEM or SET UP Printing begins TIP If printing is selected but a printer is not correctly connected RS 232C settings do not match the printer or there is no paper in the printer the printing request will not be recognized Measurement will continue however ...

Page 143: ...reen page 2 2 of each measurement mode contains the setup data item D A output By default all of CH1 to CH4 are set to OFF Use this key to select the channel to change Use this key to select a measurement data item to be output through the channel Press this key to confirm your selection of a data item to be output ESC Pressing this CHANGE key displays the options that correspond to the wiring typ...

Page 144: ...phase unbalance factor UR Frequency F If wired to a two load system Load 1 Load 2 Voltage V1 V2 and V3 Common Current I1 1 I2 1 I3 1 I1 2 I2 2 I3 2 Active power P 1 P 2 Reactive power Q 1 Q 2 Apparent power VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Three phase unbalance factor UR 1 UR 2 Frequency F Depends on the frequency source in the system settings TIP The menu items differ depend...

Page 145: ... Leading reactive energy Varh Frequency F If wired to a two load system Load 1 Load 2 Voltage V1 V2 and V3 Common Current I1 1 I2 1 I3 1 I1 2 I2 2 I3 2 Active power P 1 P 2 Reactive power Q 1 Q 2 Apparent power VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Active energy Wh 1 Wh 2 Regenerative energy Wh 1 Wh 2 Lagging reactive energy Varh 1 Varh 2 Leading reactive energy Varh 1 Varh 2 Freq...

Page 146: ...ngle PA Active energy Wh Frequency F If wired to a two load system Load 1 Load 2 Voltage V1 V2 and V3 Common Current I1 1 I2 1 I3 1 I1 2 I2 2 I3 2 Active power P 1 P 2 Reactive power Q 1 Q 2 Apparent power VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Active energy Wh 1 Wh 2 Frequency F Depends on the frequency source in the system settings TIP The menu items differ depending on the wirin...

Page 147: ...ate Use this key to select the desired rate Confirms the output rate ESC Pressing this key cancels the change and returns you to the setting screen Output rate 1 V 5 kWh 1 V 10 kWh 1 V 50 kWh 1 V 100 kWh Default 1 V 5 kWh 1 V 500 kWh 1 V 1 MWh TIP When setting an integrated value output rate for reactive energy read W as Var as the unit of the data item If more than one channel is used to output t...

Page 148: ...option of the ELEM field Use the key to select the item to set RMS CONTENT PHASE NEXT Selecting from options of the ITEM field if P is selected as an option of the ELEM field Power CONTENT PHASE NEXT ALL_RMS THD IEEE THD CSA NEXT ALL_POW ALL_P F NEXT D A OUTPUT CH ELEM ITEM ORD CH1 CH2 CH3 CH4 RMS RMS RMS RMS OFF OFF OFF OFF Selection of order When you have selected the RMS POWER CONTENT or PHASE ...

Page 149: ... 1 V 0 45 Hz 1 kHz 100 Hz Disaplay value Hz D A Output Integrated Value Integrated value 1 V 10 kwh 20 kwh 30 kwh 1 V 0 1 2 3 0 V Elapsed time Integration start For input with active power fixed at 10 kw Output rate 1 V 10 kWh D A Output Others 0 V 100 1 V 1 V 100 Displayed value range Unbalance factor 10 of F S ...

Page 150: ...g Input Terminals START STOP For details on connection refer to Connection of External I O Terminals in Section 2 3 Input Circuit 5 V 4 7 kΩ 100 pF Press the key to set the CW140 ready for continuous measurement 5 V Open Continuous measurement 0 V Close 100 Ω H L Circuit diagram Start Stop Start Stop Input Levels Low 0 to 0 8 V High 2 0 to 5 0 V CUTION The allowable voltage range of the input term...

Page 151: ... energy and the way the load is being operated Input Terminals LOGIC INPUT For details on connection refer to Connection of External I O Terminals in Section 2 3 Input Circuit Same as the circuit shown in Section 14 2 External Control Input Input Levels Same as the level shown in Section 14 2 External Control Input TIP To enable event input set the Event Input option of the SAVE PRINT ITEM screen ...

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Page 153: ... Specifications Electrical and Mechanical characteristics Conforms to EIA RS 232C Connection Point to point Communication Full duplex Synchronization Start stop synchronization Baud rate 1200 2400 4800 9600 and 19200 bps Start bit 1 bit fixed Data length 7 or 8 bits Parity Even odd or none Stop bit 1 or 2 bits Connector 9 pin D sub Hardware handshake For CA RTS and CB CTS signals a selection can b...

Page 154: ...of the CW140 Connector and Signal Names 2 1 3 4 5 6 7 8 9 Pin 2 RD Receive Data Data received from the personal computer Signal direction Input Pin 3 SD Send Data Data transmitted to a personal computer Signal direction Output Pin 5 SG Signal Ground Ground for signals Pin 7 RS Request to Send Signal used for handshake when receiving data from a personal computer Signal direction Output Pin 8 CS Cl...

Page 155: ...5 3 2 8 7 AB GND BA TXD BB RXD CB CTS CA RTS 102 SG 103 104 106 105 SD RD CS RS Signal Ground Transmitted Data Request to Send Received Data Clear to Send Examples of Connecting Signal Lines Personal computer In general use a cross cable SD RD RS CS SG SD RD RS SG OFF OFF XON XON PC CW140 SD RD RS CS SG SD RD RS SG XON RTS XON RS PC CW140 SD RD RS CS SG SD RD RS SG CTS RTS CS RS PC CW140 CS CS CS ...

Page 156: ...Control of receiving data from a computer Software Handshake Software Handshake Handshake Methods 䊊 means it is a valid selection OFF OFF XON XON XON RS CS RS Handshake method Stops sending when X OFF is received Resumes when X ON is received Stops sending when CB CTS is false Resumes when it is true No handshake No handshake Hardware Handshake Hardware Handshake Sends X OFF when receive data buff...

Page 157: ...ter If the X OFF code is received when data is being sent to the computer the meter stops sending data When it receives the next X ON code it resumes data sending The CS signal from the computer is ignored Receive Data Control A hardware handshake is performed between the meter and the computer When there is 256 bytes of free space in the receive buffer the meter sets RS False When the free space ...

Page 158: ...f free space In communication based on handshaking the meter stops receiving data if it cannot transfer data internally fast enough and the buffer s free space becomes less than 256 bytes Used 768 bytes of free space If the free space increases to 768 bytes as a result of continuing internal data transfer the meter resumes data receiving Used Regardless of the handshake all extra data will be disc...

Page 159: ...d on start stop synchronization a start bit is added every time a character is transmitted where the start bit is followed by data parity and stop bits see the figure below Data bits 7 or 8 bits One character Stop bit 1 1 or 2 bits 2 Parity bit Even odd or none Start bit Idle state of circuit Return of circuit to idle state dotted line or detection of the next data s start bit solid line ...

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Page 161: ...ves the following data on battery back up memory Measurement mode Task done during continuous measurement Data saved Instant mode Logging Time of power failure occurrence Electric energy mode Integration Time of power failure occurrence Integrated values Demand mode Demand Time of power failure occurrence Total electric energy from start of demand measurement Total electric energy during current d...

Page 162: ...e information will be saved to memory or floppy disk and printed Example of Display POWER OFF TIME 2000 02 20 10 21 50 POWER ON TIME 2000 02 20 10 21 50 ENTER key OK TIP Updating of measurement and display continues even while the message above is displayed Note that the CW140 does not take into account the period of the power failure when determining when to end logging 16 1 In the Event of a Pow...

Page 163: ...electing Language You can switch display language on the LCD between English French Spanish German Italian and Japanese System default setting English Selecting Operation Operate the following Steps when you select German for example from English 1 Press key to display the Top Menu screen 2 Select the System Settings on the Top Menu screen with key and press key to display the System Set Screen 3 ...

Page 164: ...tart updating press the key once more when updating of the display is in a held state Measurement continues even when updating of the display is in a stopped state TIP It is recommended that you hold the display from updating before saving the displayed value by press ing the key when in each of the measurement modes Refer to Chapter 13 File Functions Note that if you press the HOLD CLEAR key for ...

Page 165: ...10 minutes while the backlight is on by the LIGHT key The Auto off function can be enabled on the System Setting screen ON The backlight is automatically turned off when no key action is performed for 10 minutes OFF The backlight remains lit even when no key action is performed for 10 minutes Default setting ON Auto off TIP If the backlight is turned off by the Auto off function press the LIGHT ke...

Page 166: ...d when in key lock mode Power Saving Mode 1 During continuous measurement logging integration demand If no key action is performed for more than 10 minutes the LCD will be automatically shut off so that power consumption can be minimized Power saving mode can be specified on the System Setting screen Default Off To recover from power saving mode press the LIGHT key The LCD is activated and the bac...

Page 167: ...ate and language to the default value set before shipment Refer to Section 5 2 System Reset Low Battery Indicator The low battery mark is displayed when the voltage of the NiMH battery pack or alkaline batteries becomes low The mark indicating the battery is low is displayed in the upper right corner of the screen If you continue to use the meter when the battery is low the power will be automatic...

Page 168: ...al time clock Checking set up data If initialization of either of the above has been performed the backup battery may be low See the NOTE below NOTE If the backup battery in your meter becomes low contact the vendor from which you purchased the instrument Note that if the battery is low data backup will not occur when there is a power failure during continuous measurement TIP If the initialization...

Page 169: ...t Power consumption 1 15 W typical when loading data Operating temperature and humidity ranges 5 C to 40 C 20 to 80 RH no condensation Storage temperature and humidity ranges 40 C to 60 C 5 to 80 RH no condensation External dimensions Approx 101 5 W 147 D 17 2 H mm excluding protrusions and cable Weight Approx 300 g Connection The CW140 is connected to the floppy disk drive through a dedicated cab...

Page 170: ... 1 N v 2 v 3 L L 1CH H L H L H V IN P U T V IN P U T 60 0V M A X 60 0V M A X TE R M IN A LS 60 0V M A X TE R M IN A LS 60 0V M A X TO E A R O E A R TH TH L 2 H L C H C H 1 H L C H C H C AC AT F D D F D D R S 2 3 2 C R S 2 3 2 C LO G IC N IP U T LO G IC N IP U T S TS TA RA R T S T T S TO PO P 5 5V M A X 5 5V M A X v 1 N v 2 v 3 L L 1CH H L H L H V IN P U T V IN P U T 60 0V M A X 60 0V M A X TE R M ...

Page 171: ...t 100 8 ON DIP SW 2 SW No Function ON OFF 1 OFF Print mode 40 columns 80 columns 2 ON User font back up ON OFF 3 ON Character type Ordinary characters Special characters 4 ON Zero font 0 0 5 ON International character set Japanese 6 ON 7 ON 8 ON DIP SW 3 SW No Function ON OFF 1 ON Data bit length 8 bits 7 bits 2 ON Parity setting NO YES 3 ON Parity condition Odd Even 4 OFF Busy control H W BUSY XO...

Page 172: ... 0 4 deg F 50 00 Hz Wh 0 011 MWh Varh 0 009 MVarh Varh 0 000 MVarh EVENT 1 Date and time Starting time of integration RMS values of voltage current Number of event inputs P Active power PF Power factor Q Reactive power PA Phase angle VA Apparent power F Frequency Instantaneous values Electric energy TIP In the example above the DIP SW 2 print mode is set at 40 columns For additional information se...

Page 173: ...check that the battery is charged If you are using alkaline batteries check that the batteries are not low or the polarities of the batteries are correct If the RTC Initialized or Settings Initialized message appears on the startup screen contact the vendor from which you purchased the instrument The battery needs to be changed Users are not authorized to change it themselves The life of the backu...

Page 174: ...glish The error messages are categorized in the following codes Execution errors 600 to 799 Setting errors 800 to 899 Self test errors 950 to 963 Communication syntax errors 100 to 199 Communication execution errors 200 to 299 Communication query errors 400 to 499 System errors 912 Other 350 and 390 TIP If an execution error or communication error occurs the error code and message will be stored i...

Page 175: ...output media from memory floppy disk or a printer All the items to save and print are set to off Set one or more items to on Delete unnecessary files or save to another floppy disk Maximum number of files allowed has been exceeded Delete unnecessary files or save to another floppy disk There is not enough free space or a file cannot be created Delete unnecessary files Check memory Check floppy dis...

Page 176: ...OR LOG LINEAR SETUP ERROR Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Set the correct start time Set the correct stop time Set the correct start time Set the correct stop time Set the correct start time Set the correct stop time Set the stop timer correctly Set the correct output rate Specify the data out...

Page 177: ...ETUP ERROR FLOW CONTROL SETUP ERROR LANGUAGE SETUP ERROR DATE SETUP ERROR ELEC ENERGY DIGIT UNIT SETUP ERROR Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setting file Check the setti...

Page 178: ...alid Data RTC Initialized RTC Error Needs servicing Needs servicing Needs servicing Settings have been initialized If this message is displayed every startup it needs servicing Invalid settings have been found and corrected Memory has not been formatted Formatting memory Completed formatting Memory failure has been recovered Needs servicing Needs servicing Needs servicing RTC Real Time Clock has b...

Page 179: ...cify the necessary parameters Separate the header and the data with a space Check the mnemonic alphanumeric character string Check the header Check the header Mantissa must be entered before the numeric value in NRf format Use a smaller exponent after E in NR3 format Limit the number of digits to 255 or less Use a format other than NRf format Check the unit for Voltage Current and Frequency Check ...

Page 180: ...Description and Corrective Measures Query INTERRUPTED Query UNTERMINATED Query DEADLOCKED Query UNTRMINATED after indefinite response Check the transmission and reception order Check the transmission and reception order Limit the length of the program message including the PMT to 1024 bytes or less Do not enter queries after IDN 410 420 430 440 System Error 912 Error Message Error Code Description...

Page 181: ... A 250 Arms Clamp C 625 Arms Clamp B 700 Arms Range up RMS is 110 or more of range rating or sampled value is approximately 300 or more of rating Range down RMS is 30 or less of range rating or sampled value does not exceed approximately 300 of range rating after range moves down 2 Measurement functions Parameter Method Frequency range Crest factor Effective input range Temperature coefficient Dis...

Page 182: ...p B 1000A 45 Hz f 66 Hz 1 0 rdg 0 8 rng Calculation accuracy reactive power 2 power factor apparent power phase angle 45 Hz to 1 kHz value calculated from measurement 1 dgt Power factor effects For 45 Hz f 66 Hz When using Clamp A 200A Active power 1 0 rng cos φ 0 5 relative to power factor 1 Reactive power 1 0 rng sin φ 0 5 relative to reactive power 1 When using Clamp C 500A When using Clamp B 1...

Page 183: ...wer using reactive power meter method v t i t Input signals T One period of input signal 3φ φ φ φ φ voltage unbalanced rate Va Vb 100 Unbalanced rate Frequency 45 440 Hz Calculation accuracy aluculation from measurement 1 For 3φ3W Vs V12 V23 V31 2 1 line to line voltages for the 3φ3W For 3φ4W In the equations V12 V23 V31 for the 3φ3W are substituted with V1n V2n V3n respectively 19 1 Specification...

Page 184: ...Ai 2 Pi2 i 1 2 3 Q Q1 Q2 Q3 1 000 180 0 VAi Vi Ai i 1 3 VA 3 2 VA1 VA3 VAi Vi Ai i 1 2 3 VA VA1 VA2 VA3 VAi Vi Ai i 1 2 VA VA1 VA2 Q VA 2 P2 VAi Vi Ai i 1 3 VA 3 2 VA1 VA3 VA VA 3φ3W3i 3φ4W Calculation range 1 to 1 180 to 180 Display resolution P P With reactive power meter P VA Without reactive power meter cos 1 P VA With reactive power meter Without reactive power meter The ratings depend on the...

Page 185: ...450 0kW 900 0kW 1φ2W 12 00 kW 30 00 kW 60 00 kW 120 0 kW 300 0kW 600 0kW 1φ3W 24 00 kW 60 00 kW 120 0 kW 240 0 kW 600 0kW 1200kW 3φ3W 24 00 kW 60 00 kW 120 0 kW 240 0 kW 600 0kW 1200kW 3φ4W 36 00 kW 90 00 kW 180 0 kW 360 0 kW 900 0kW 1800kW 20 00 50 00 100 0 200 0 500 0 1000 Voltage range V Wiring Current range A Clamp A 20 200A 150 0 300 0 600 0 Current range for clamp A 20 50 100 200A Model 9603...

Page 186: ...is function 45 Hz to 65 Hz Accuracy 0 1 rdg 1 dgt Low pass filter function The low pass filter function can be set in the system settings Cutoff frequency 300 Hz 12 Electric energy mode Display fields Integrate screen Active power Wh recursive power Wh lag reactive power Varh lead reactive power Varh Instant screen Instantaneous value measurement function measurement calculated value display scree...

Page 187: ...for each demand type power from start to end of demand average power factor average load factor Instantaneous value screen Instantaneous value measurement function measurement calculated value display screen does not apply to unbalance factor Display accuracy With Instantaneous value measurement an active power measurement accuracy 1 dgt is obtained Demand function settings Demand time limit setti...

Page 188: ...angle Total electric energy Total power factor fundamental wave frequency Graph display Voltage and current Total RMS content phase angle Power Power power content power phase angle Display accuracy RMS power 1 5 rdg 1 5 rng 1 Content Value calculated from 1 2 dgt Phase angle 5 deg Total harmonic distortion Value calculated from 1 2 dgt Logging function The logging function can be used to take con...

Page 189: ...order active power fundamental wave active power nth order harmonic voltage current RMS 2 Voltage RMS Current RMS RMS nth order content RMS phase angle Total Harmonic Distortion content IEEE Total harmonic distortion content CSA Power Power nth order content Power phase angle 1φ2W Pn Vnr Anr Vni Ani 1φ3W Pn P1n P2n 3φ3W Pn P1n P3n 3φ4W Pn P1n P2n P3n With reactive power meter method 1φ2W Qn Vnr An...

Page 190: ... FFT calculation P1n P3n Active power element of nth order Q1n Q3n Reactive power element of nth order RMS phase angle Phase angle of nth order harmonic components relative to fundamental wave component of input signal Power phase angle nth order current phase relative to nth order voltage 16 Externally controlled input Inputs can be externally controlled as logging integration and demand start st...

Page 191: ...or each mode Accuracy measurement accuracy 0 5 FS Updating period Same as display updating period Frequency D A output 1 V 0 45 V 0 1 V 0 45 Hz 1 kHz 100 Hz Disaplay value Hz Integrate Integrated value 1 V 10 kwh 20 kwh 30 kwh 1 V 0 1 2 3 0 V Elapsed time Integration start For input with active power fixed at 10 kw Output rate 1 V 10 kWh Other items 0 V 100 1 V 1 V 100 Displayed value range Unbala...

Page 192: ...r power line Insulating withstand voltage 3700 V AC for one minute Between voltage input terminals assembled together and casing Between voltage input terminals assembled together and 1 through 5 assembled together 2300 V AC for one minute Between voltage input terminals assembled together and special AC adapter power line Across casing and special AC adapter power line Power supply AC voltage AC ...

Page 193: ...robes Six AA alkaline dry cells AC adapter Safety standards The safety standards depend on the suffix code type of AC adapter of CW140 When the suffix code of CW140 is F R or S For example CW140 S Safety standards EN61010 1 EN61010 2 031 Overvoltage category II Max input voltage 600 Vrms Overvoltage category III Max input voltage 300 Vrms Pollution degree 2 When the suffix code of CW140 is D When ...

Page 194: ...tion immunity Measuring accuracy of within 40 of each range D A Output of within 40 of each range 21 External dimension of CW140 v1 N v2 L 1 2 3 4 N L N L N N L v3 L 1 N L N L N L 2 N L 3 N L 4 N F F F 2 3 F ENTER 4 F 5 1 REC INPUT OUTPUT LIGHT START STOP Wh V A W TOP MENU LOCK KEY CLAMP ON POWER METER 184 7 24 65 2 56 206 8 11 Unit mm approx inch 19 1 Specifications ...

Page 195: ...0 200 A 45 Hz to 1 kHz 0 5 at 50 500 A 45 Hz to 1 kHz Used circuit voltage 600 Vrms AC maximum Withstand voltage 3 7 kVrms AC for one minute across core and casing and across core and output Measurable connector diameter ø30 mm maximum Operating temperature 5 to 40 C 35 to 80 RH or less no condensation and humidity ranges Storage temperature 20 to 60 C 90 RH or less no condensation and humidity ra...

Page 196: ...omestic use Therefor appropriate measures must be taken when using it for domestic use Immunity standards EN61000 6 2 1999 EN61326 1997 Effectiveness of radiation immunity Measuring accuracy of within 20 of each range 2 External dimensions of Clamp on Probe 96030 96031 73 2 87 57 2 24 60 2 36 30 1 18 86 3 39 130 5 12 Unit mm approx inch 19 2 Specifications of Current Clamps ...

Page 197: ... Approximately 100Ω max External magnetic field effects 0 5 A equivalent or less at 400 A m 50 60 Hz Connector position effects 0 5 at 200 1000 A 45 Hz to 66 Hz Used circuit voltage 600 Vrms AC maximum Withstand voltage 2 2 kVrms AC for one minute across core and casing and across core and output Measurable connector diameter Ø65 mm maximum Bus bar 65 70 mm max Operating temperature 5 to 40 C 35 t...

Page 198: ...IM CW140 E 19 18 19 2 Specifications of Current Clamps 4 External dimensions of Clamp on Probe 96032 32 1 26 24 7 0 97 100 3 94 66 2 60 71 2 80 172 5 6 79 Unit mm inch ...

Page 199: ...nge Amp Current sensing clamps Power supply block EEPROM Power Battery Charge AC Adapter Flash Memory Flash Memory SRAM BACKUP SRAM FDC Controller Vcc LPF ADC ADC Zero Cross PLL VRAM LCD Controller MPU DSP LCD Driver LCD Driver Display unit Dot Matrix LCD 320 240 LCD s power supply Buzzer RTC D A RS 232C Key Control Input Back Light Inverter IVNT_IN ST SP_IN D A OUTPUT 1 to 4 ch Appendix ...

Page 200: ......

Page 201: ... 6 Detailed Description of Communication Commands App 2 16 1 6 1 COMMunicate Group App 2 16 1 6 2 SYSTem Group App 2 17 1 6 3 DEMAnd Group App 2 19 1 6 4 HARMonics Group App 2 24 1 6 5 INTEgrate Group App 2 29 1 6 6 INSTant Group App 2 33 1 6 7 MEASure Group App 2 36 1 6 8 STATus Group App 2 41 1 6 9 FILE Group App 2 41 1 6 10 Common Group App 2 42 1 7 Valid Invalid Communication Command Tables Ap...

Page 202: ... to terminate each program message For the CW140 the terminator is a string of CR ASCII code 0DH and LF ASCII code 0AH characters Format of Program Message Unit The format of a program message unit is shown below Program header Program data Space Program header The program header contains the command type Program data If there are certain conditions for executing a command they are appended as pro...

Page 203: ...eceived If you send the next program message before any response message is received or after only part of a message is received an error will occur The response message that was not received at all or completely will be discarded If the personal computer tries to receive a response message when there is none an error will occur An error also occurs if the personal computer tries to receive a resp...

Page 204: ...d group relating to electric energy measurement INTEgrate INTEgrate AOUT CHANnel1 INTEgrate DISPlay LOAD INTEgrate STORe When Concatenating Commands of the Same Group The CW140 stores information on which hierarchical level the command currently being executed belongs to and performs analysis on the assumption that the next command will also belong to the same level Therefore you may omit the head...

Page 205: ...ST If the x numeric value at the end of the header is omitted it is assumed to be 1 Example If CHANnel x is written as CHAN this represents CHAN1 1 3 Response Upon receiving a query from the personal computer the CW140 returns a response message to the computer A response message is sent in either of the following forms Response consisting of a header and data If the response can be used directly ...

Page 206: ...sage is predetermined for each query The same form is used irrespective of whether the value is large or small When using NR3 the after the E can be omitted but the cannot If a value outside the setting range is specified the closest valid value will be used If the value specified is beyond the precision of the CW140 the value will be rounded Voltage Time Frequency Voltage Time and Frequency indic...

Page 207: ...tring unlike the character data which uses only specific characters The character string must be enclosed in single quotation marks or double quotation marks Form Example Character string data ABC IEE488 2 1987 If a character string contains a double quotation mark use two double quotation marks to indicate it This rule also applies to a single quotation mark within a character string Response mes...

Page 208: ...filter is set to ON or OFF SYSTem FREQuence Sets queries the frequency source SYSTem HOLD Sets queries whether or not the measurement screen is held SYSTem KLOCK Sets queries the keylock function SYSTem OPERationvar Sets queries whether the reactive power method is set to ON or OFF SYSTem RESEt Resets the system SYSTem SCALing Queries all the settings relating to scaling SYSTem SCALing CT Sets que...

Page 209: ...ettings relating to output destination and data items to be saved DEMAnd STORe STATe Sets queries whether data output is set to ON or OFF DEMAnd STORe FD Sets queries whether data output to floppy disks is set to ON or OFF DEMAnd STORe FILEname Sets queries the name of a file to be saved DEMAnd STORe ITEM Queries all the settings relating to data items to be saved DEMAnd STORe ITEM DMGR Sets queri...

Page 210: ...nics STORe ITEM EVENt Sets queries whether event data output is set to ON or OFF HARMonics STORe ITEM I x Sets queries whether current data output is set to ON or OFF HARMonics STORe ITEM ICONt Sets queries whether harmonic current content data output is set to ON or OFF HARMonics STORe ITEM IEEE Sets queries whether THD IEEE data output is set to ON or OFF HARMonics STORe ITEM IPA Sets queries wh...

Page 211: ...nel x Sets queries D A output data items INTEgrate AOUT RATE Sets queries the rate of D A output integrated values INTEgrate CLEAr Clears integrated values to zero INTEgrate DISPlay Queries all the settings relating to measurement screen INTEgrate DISPlay LOAD Sets queries the load whose data is measured and viewed INTEgrate DISPlay MODE Sets queries the mode of measurement screen INTEgrate NEGWat...

Page 212: ...Queries all the settings relating to measurement screen INSTant DISPlay EXPAnd x Sets queries the data items for expanded view INSTant DISPlay LOAD Sets queries the load whose data is measured and viewed INSTant DISPlay MODE Sets queries the mode of measurement screen INSTant STATe Queries the measurement status INSTant STORe Queries all the settings relating to output destination and data items t...

Page 213: ... Harmonics Measure mode communication output data MEASure HARMonics ITEM Queries all the settings relating to Harmonics Measure mode communication output data items MEASure HARMonics ITEM ALL Sets all effective Harmonics Measure mode communication output data to ON MEASure HARMonics ITEM CLEAr Sets all effective Harmonics Measure mode communication output data to OFF MEASure HARMonics ITEM I x Que...

Page 214: ...ueries whether Harmonics Measure mode communication output power data is set to ON or OFF MEASure HARMonics ITEM PCONt x Sets queries whether Harmonics Measure mode communication output harmonic power data is set to ON or OFF MEASure HARMonics ITEM PPA x Sets queries whether Harmonics Measure mode communication output power phase angle data is set to ON or OFF MEASure HARMonics ITEM PTOTal Sets qu...

Page 215: ...ITEM query STATus Group STATus Queries all the settings relating to the status of the communication function STATus ERRor Queries the error code and message head of the error queue STATus OMESsage Queries whether or not to add to the message contents to the STATus ERRor response FILE Group FILE DIREctory Queries the internal memory directory set by the FILE TYPE command FILE NAME Sets queries the ...

Page 216: ...first in first out basis If the error queue overflows the last message is replaced with message 350 Queue overflow The error queue is emptied in either of the following cases in addition to a case when it is entirely read out The CLS command is received The power is turned on again 1 6 Detailed Description of Communication Commands 1 6 1 COMMunicate Group The commands in the COMMunicate group are ...

Page 217: ...whether the LCD backlight is set to ON or OFF Syntax SYSTem BACKlight SYSTem BACKlight Boolean SYSTem BEEP Function Sets queries whether the beep function is set to ON or OFF Syntax SYSTem BEEP SYSTem BEEP Boolean SYSTem CLAMp Function Sets queries the type of clamp Syntax SYSTem CLAMp SYSTem CLAMp NRf NRf 0 200 A range 1 1000 A range 2 500 A range SYSTem CONTrast Function Sets queries the LCD con...

Page 218: ...3 6 I1 2 7 I2 2 8 I3 2 SYSTem HOLD Function Sets queries the hold status of measurement screen Syntax SYSTem HOLD SYSTem HOLD Boolean SYSTem KLOCk Function Sets queries whether the key lock function is set to ON or OFF Syntax SYSTem KLOCk SYSTem KLOCk Boolean SYSTem OPERationvar Function Sets queries whether the reactive power method is set to ON or OFF Syntax SYSTem OPERationvar SYSTem OPERationv...

Page 219: ...2W 2 6 1φ3W 2 7 3φ3W 2 1 6 3 DEMAnd Group The commands in the DEMAnd group set or query demand measurement parameters DEMAnd Function Queries all the settings relating to demand measurement Syntax DEMAnd DEMAnd AOUT Function Queries all the settings relating to D A output Syntax DEMAnd AOUT DEMAnd AOUT CHANnel x Function Sets queries D A output data items Syntax DEMAnd AOUT CHANnel x DEMAnd AOUT C...

Page 220: ... 15 minutes 3 30 minutes 4 60 minutes 5 2 hours 6 3 hours 7 4 hours 8 6 hours 9 8 hours 10 10 hours 11 12 hours DEMAnd PERIod Function Queries all the settings relating to decimal point and unit of energy of demand period Syntax DEMAnd PERIod DEMAnd PERIod DIGIt Function Set queries position of decimal point of energy of demand period Syntax DEMAnd PERIod DIGIt DEMAnd PERIod DIGIt NRf NRf 0 STANDA...

Page 221: ...ettings relating to the end of measurement Syntax DEMAnd STOP DEMAnd STOP EXECute Function Stops measurement Syntax DEMAnd STOP EXECute DEMAnd STOP INTErval Function Sets queries the measurement timer setting Syntax DEMAnd STOP INTErval DEMAnd STOP INTErval NRf1 NRf2 NRf3 NRf1 Hour 0 to 1000 NRf2 Minute 0 to 59 NRf3 Second 0 to 59 in 10 second increments DEMAnd STOP METHod Function Sets queries th...

Page 222: ... demand group data output is set to ON or OFF Syntax DEMAnd STORe ITEM DMGR DEMAnd STORe ITEM DMGR NRf NRf 0 OFF 1 ON ON 1 2 ON 2 3 All DEMAnd STORe ITEM IGR Function Sets queries current group data output is set to ON or OFF Syntax DEMAnd STORe ITEM IGR DEMAnd STORe ITEM IGR NRf NRf 0 OFF 1 ON ON 1 2 ON 2 3 All DEMAnd STORe ITEM EVENt Function Sets queries whether event group data output is set t...

Page 223: ... internal memory is set to ON or OFF Syntax DEMAnd STORe MEMOry DEMAnd STORe MEMOry Boolean DEMAnd TOTAl Function Queries all the settings relating to decimal point and unit of total energy Syntax DEMAnd TOTAl DEMAnd PERIod DIGIt Function Set queries position of decimal point of total energy Syntax DEMAnd TOTAl DIGIt DEMAnd TOTAl DIGIt NRf NRf 0 STANDARD 1 000 000 2 0000 00 3 00000 0 4 000000 DEMA...

Page 224: ...FF 1 V1 2 V2 3 V3 4 I1 5 I2 6 I3 7 P HARMonics AOUT CHANnel x ITEM Function Sets queries D A output data items Syntax HARMonics AOUT CHANnel x ITEM HARMonics AOUT CHANnel x ITEM NRf Output channel x 1 to 4 Output data items NRf 0 RMS value 1 Content 2 Phase angle 3 Total RMS value 4 Total electric energy 5 Total power factor 6 Total harmonic distortion IEEE 7 Total harmonic distortion CSA HARMonic...

Page 225: ...ts queries whether data output to a floppy disk is set to ON or OFF Syntax HARMonics STORe FD HARMonics STORe FD Boolean HARMonics STORe FILEname Function Sets queries the name of a file to be saved Syntax HARMonics STORe FILEname HARMonics STORe FILEname Filename Filename Up to 8 characters HARMonics STORe INTErval Function Sets queries the output time interval Syntax HARMonics STORe INTErval HAR...

Page 226: ...is set to ON or OFF Syntax HARMonics STORe ITEM ITOTal HARMonics STORe ITEM ITOTal Boolean HARMonics STORe ITEM ORDEr Function Sets queries all the settings relating to the order for which data is output Syntax HARMonics STORe ITEM ORDEr HARMonics STORe ITEM ORDEr TYPE Function Sets queries the type of order for which data is output Syntax HARMonics STORe ITEM ORDEr TYPE HARMonics STORe ITEM ORDEr...

Page 227: ...HARMonics STORe ITEM V x HARMonics STORe ITEM V x Boolean Voltage element x 1 to 3 HARMonics STORe ITEM VCONt Function Sets queries whether harmonic voltage content data output is set to ON or OFF Syntax HARMonics STORe ITEM VCONt HARMonics STORe ITEM VCONt Boolean HARMonics STORe ITEM VPA Function Sets queries whether voltage phase angle data output is set to ON or OFF Syntax HARMonics STORe ITEM...

Page 228: ...tings relating to the end of logging Syntax HARMonics STORe STOP HARMonics STORe STOP EXECute Function Stops logging Syntax HARMonics STORe STOP EXECute HARMonics STORe STOP INTErval Function Sets queries the end of logging timer Syntax HARMonics STORe STOP INTErval HARMonics STORe STOP INTErval NRf1 NRf2 NRf3 NRf1 Hour 0 to 1000 NRf2 Minute 0 to 59 NRf3 Second 0 to 59 in 10 second increments HARM...

Page 229: ...A 2 24 PF 2 25 PA 2 26 Wh 2 27 Wh 2 28 Varh 2 29 Varh 2 INTEgrate AOUT RATE Function Sets queries the rate of D A output integrated values Syntax INTEgrate AOUT RATE INTEgrate AOUT RATE NRf NRf 0 1 V 5 kWh 1 1 V 10 kWh 2 1 V 50 kWh 3 1 V 100 kWh 4 1 V 500 kWh 5 1 V 1 MWh INTEgrate CLEAr Function Clears integrated values to zero Syntax INTEgrate CLEAr INTEgrate DISPlay Function Queries all the sett...

Page 230: ...ARt TIME NRf1 NRf2 NRf3 NRf4 NRf5 NRf1 Year 1999 to 2098 NRf2 Month 1 to 12 NRf3 Day 1 to 31 NRf4 Hour 0 to 23 NRf5 Minute 0 to 59 INTEgrate STATe Function Queries the measurement status Syntax INTEgrate STATe INTEgrate STATe NR1 0 Stop 1 Ready for measurement 2 Integration in progress INTEgrate STOP Function Queries all the settings relating to the end of measurement Syntax INTEgrate STOP INTEgra...

Page 231: ...ueries the name of a file to be saved Syntax INTEgrate STORe FILE INTEgrate STORe FILE Filename Filename Up to 8 characters INTEgrate STORe INTErval Function Sets queries the output time interval Syntax INTEgrate STORe INTErval INTEgrate STORe INTErval NRf1 NRf2 NRf1 Hour 0 to 1000 NRf2 Minute 0 to 59 INTEgrate STORe ITEM Function Queries all the settings relating to data items to be saved Syntax ...

Page 232: ...s whether voltage group data output is set to ON or OFF Syntax INTEgrate STORe ITEM VGR INTEgrate STORe ITEM VGR NRf NRf 0 OFF 1 ON ON 1 2 ON 2 3 All INTEgrate STORe ITEM WHGR Function Sets queries whether electric energy group data output is set to ON or OFF Syntax INTEgrate STORe ITEM WHGR INTEgrate STORe ITEM WHGR NRf NRf 0 OFF 1 ON ON 1 2 ON 2 3 All INTEgrate STORe MEMOry Function Sets queries...

Page 233: ... PA 2 30 UR 2 INSTant DISPlay Function Queries all the settings relating to measurement screen Syntax INSTant DISPlay INSTant DISPlay EXPAnd x Function Sets queries data items to be shown in expanded view format Syntax INSTant AOUT EXPAnd x INSTant AOUT EXPAnd x NRf x 1 to 3 NRf If x 1 0 V1 1 V1 2 V2 3 I1 4 I2 5 I3 6 P 7 Q 8 VA If x 2 0 V1 1 V1 2 V2 3 I1 4 I2 5 I3 6 P 9 PF 10 PA If x 3 0 V1 1 V1 2...

Page 234: ...INSTant STORe INTErval NRf1 NRf2 NRf1 Hour 0 to 1000 NRf2 Minute 0 to 59 INSTant STORe ITEM Function Queries all the settings relating to data items to be saved Syntax INSTant STORe ITEM INSTant STORe ITEM IGR Function Sets queries whether current group data output is set to ON or OFF Syntax INSTant STORe ITEM IGR INSTant STORe ITEM IGR NRf NRf 0 OFF 1 ON ON 1 2 ON 2 3 All INSTant STORe ITEM EVENt...

Page 235: ...NRf5 NRf1 Year 1999 to 2098 NRf2 Month 1 to 12 NRf3 Day 1 to 31 NRf4 Hour 0 to 23 NRf5 Minute 0 to 59 INSTant STORe STOP Function Queries all the settings relating to the end of logging Syntax INSTant STORe STOP INSTant STORe STOP EXECute Function Stops logging Syntax INSTant STORe STOP EXECute INSTant STORe STOP INTErval Function Sets queries the end of logging timer setting Syntax INSTant STORe ...

Page 236: ...e of maximum demand occurrence Load 2 32 Time of maximum demand occurrence Load 2 33 Load factor Load 2 34 Maximum demand Load 2 35 Electric energy integrated during the current demand period Load 2 36 Average power factor Load 2 37 Number of demand periods MEASure DEMAnd ITEM ALL Function Sets all effective Demand Measure mode communication output data to ON Syntax MEASure DEMAnd ITEM ALL MEASure...

Page 237: ...IEEE data is set to ON or OFF Syntax MEASure HARMonics ITEM I x IEEE MEASure HARMonics ITEM I x IEEE Boolean Current element x 1 to 3 MEASure HARMonics ITEM I x1 PA x2 Function Sets queries whether Harmonics Measure mode communication output current phase angle data is set to ON or OFF Syntax MEASure HARMonics ITEM I x1 PA x2 MEASure HARMonics ITEM I x1 PA x2 Boolean Current element x1 1 to 3 Orde...

Page 238: ...MEASure HARMonics ITEM V x1 CONT x2 Function Sets queries whether Harmonics Measure mode communication output harmonic voltage content data is set to ON or OFF Syntax MEASure HARMonics ITEM V x1 CONT x2 MEASure HARMonics ITEM V x1 CONT x2 Boolean Voltage element x1 1 to 3 Order x2 1 to 13 MEASure HARMonics ITEM V x CSA Function Sets queries whether Harmonics Measure mode communication output volta...

Page 239: ...Sure HARMonics ITEM PCONt x MEASure HARMonics ITEM PCONt x Boolean Order x 1 to 13 MEASure HARMonics ITEM PPA x Function Sets queries whether Harmonics Measure mode communication output power phase angle data is set to ON or OFF Syntax MEASure HARMonics ITEM PPA x MEASure HARMonics ITEM PPA x Boolean Order x 1 to 13 MEASure HARMonics ITEM PTOTal Function Sets queries whether Harmonics Measure mode...

Page 240: ...settings relating to Instant Measure mode communication output data Syntax MEASure INSTant MEASure INSTant ITEM Function Queries all the settings relating to Instant Measure mode communication output data items Syntax MEASure INSTant ITEM MEASure INSTant ITEM Instant Measure mode data item Function Sets queries whether Instant Measure mode communication output data items are set to ON or OFF Synta...

Page 241: ...add the message contents to the STATus ERRor response Syntax STATus OMESsage Boolean STATus OMESsage 1 6 9 FILE Group The commands in the FILE group deal with data acquisition from internal memory FILE DIREctory Function Queries the internal memory directory set by the FILE TYPE command Syntax FILE DIREctory Description This command can only be accessed from the TOP MENU screen FILE NAME Function ...

Page 242: ... Demand Measure mode 4 Harmonics Measure mode NRf2 1 Continuous measurement file 2 On screen reading file 3 Measurement data item file 4 Condition setting file 1 6 10 Common Group CLS ClearStatus Function Clears the error queue Syntax CLS IDN IDeNtify Function Queries the meter model Syntax IDN Description A reply sequence is returned as follows Manufacturer Model Serial No Firmware version Serial...

Page 243: ...g Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric Energy mode Demand mode Harmonics Mode Mode State Command COMMun...

Page 244: ...dicates the command is valid Indicates the command is invalid Indicates the command is invalid when electric energy is integrated TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuou...

Page 245: ...TORe STORe STATe STATe FD FD FILEname FILEname Indicates the command is valid Indicates the command is invalid TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous H...

Page 246: ... Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric Energy mode Demand mode Harmoni...

Page 247: ...EEE IPA IPA IRMS IRMS ITOTal ITOTal Indicates the command is valid Indicates the command is invalid TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continu...

Page 248: ...l INTErval METHod METHod TIME TIME TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuo...

Page 249: ...rval INTErval ITEM ITEM IGR IGR EVENt EVENt PGR Indicates the command is valid Indicates the command is invalid TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous ...

Page 250: ... Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric Energy mode Demand mode Harmonics Mode Mode State Comman...

Page 251: ...TOP EXECute INTErval INTErval METHod METHod Indicates the command is valid Indicates the command is invalid TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold...

Page 252: ...le Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric Energy mode Demand mode Harmonics Mode Mode State Command ...

Page 253: ...Tal V x V x CONT x CONT x CSA Indicates the command is valid Indicates the command is invalid TOP MENU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Ho...

Page 254: ...NU System Setting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric ...

Page 255: ...etting File Handling Hold Logging Integrating Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Checking Wiring Setting File Logging stopped Logging Logging stopped Demand Demand stopped Integration stopped Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Hold Continuous Instant Mode Electric Energy mode...

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Page 257: ...on of the CW140 file File type Measurement mode In the case of an on screen reading file it contains various setting information for reading a file Title line for output data Measurement data 1 Measurement data 2 In the case of a continuous measurement data file measurement data other than measurement data 1 is added for each logging For other files as only the measurement data at file saving is s...

Page 258: ...r Start method of logging Start date of logging Start time of logging End method of logging End date of logging End time of logging End timer of logging Reactive power method Frequency source VT ratio CT ratio Actual start date of logging Actual start time of logging Actual end date of logging Actual end time of logging 0 1φ2W 1 1φ3W 2 3φ3W 3 3φ3W3I 4 3φ4W 5 1φ2W 2 6 1φ3W 2 7 3φ3W 2 0 AUTO 1 150V ...

Page 259: ...ration End method of integration End date of integration End time of integration End timer of integration Regenerative energy calculation Position of decimal point of electric energy Unit of electric energy Reactive power method Frequency source VT ratio CT ratio Actual start date of integration Actual start time of integration Actual end date of integration Actual end time of integration 0 1φ2W 1...

Page 260: ...eriod Demand reference power Position of decimal point of total energy Unit of total energy Position of decimal point of energy of demand period Unit of energy of demand period Reactive power method Frequency source VT ratio CT ratio Actual start date of demand Actual start time of demand Actual end date of demand Actual end time of demand 0 1φ2W 1 1φ3W 2 3φ3W 3 3φ3W3I 4 3φ4W 5 1φ2W 2 6 1φ3W 2 7 3...

Page 261: ... Table display order Start method of logging Start date of logging Start time of logging End method of logging End date of logging End time of logging End timer of logging Reactive power method Frequency source VT ratio CT ratio Actual start date of logging Actual start time of logging Actual end date of logging Actual end time of logging 0 1φ2W 1 1φ3W 2 3φ3W 3 3φ3W3I 4 3φ4W 5 1φ2W 2 6 1φ3W 2 7 3φ...

Page 262: ...put time OUTPUT TIME Voltage V V1 V2 V3 Three phase unbalance factor UR Current A 1 2 3 Active power W P Reactive power Var Q Apparent power VA VA Power factor PF Phase angle PA Frequency Hz F Event input EVENT 2 Dual load Measurement Output date OUTPUT DATE Output time OUTPUT TIME Load 1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Three phase unbalance factor UR 1 UR 2 Current A 1 1 2 1 ...

Page 263: ...e energy Varh Varh Leading reactive energy Varh Varh Event input EVENT 2 Dual load Measurement Output date OUTPUT DATE Output time OUTPUT TIME Integration start date INTEG START DATE Integration start time INTEG START TIME Elapsed time ELAPSED TIME Load 1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Current A 1 1 2 1 3 1 1 2 2 2 3 2 Active power W P 1 P 2 Reactive power Var Q 1 Q 2 Apparen...

Page 264: ...date demand period end date DEM END DATE Demand end time demand period end time DEM END TIME Elapsed time ELAPSED TIME Number of demand periods DEMAND Voltage V V1 V2 V3 Current A 1 2 3 Active power W P Reactive power Var Q Apparent power VA VA Power factor PF Phase angle PA Frequency Hz F Total electric energy Wh Wh Demand W Dem_P Date of maximum demand Dem_P_Max_Date Time of maximum demand Dem_P...

Page 265: ...s DEMAND Load 1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Current A 1 1 2 1 3 1 1 2 2 2 3 2 Active power W P 1 P 2 Reactive power Var Q 1 Q 2 Apparent power VA VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Frequency Hz F 1 F 2 Note1 Total electric energy Wh Wh 1 Wh 2 Demand W Dem_P 1 Dem_P 2 Date of maximum demand Dem_P_Max_Date 1 Dem_P_Max_Date 2 Time of maximum demand Dem_P_M...

Page 266: ... THD IEEE THD IEEE _V1 THD IEEE _V2 THD IEEE _V3 Voltage THD CSA THD CSA _V1 THD CSA _V2 THD CSA _V3 Current A 1st through 13th order 1 1 to 1 13 2 1 to 2 13 3 1 to 3 13 Current content 1st through 13th order 1CONT 1 to 1CONT 13 2CONT 1 to 2CONT 13 3CONT 1 to 3CONT 13 Current phase angle 1st through 13th order 1PA 1 to 1PA 13 2PA 1 to 2PA 13 3PA 1 to 3PA 13 Total rms current value A TOTAL_ 1 All R...

Page 267: ...ent Print date and time yyy mm dd hh mm ss Voltage V V1 V2 V3 Three phase unbalance factor UR Current A 1 2 3 Active power W P Reactive power Var Q Apparent power VA VA Power factor PF Phase angle PA Frequency Hz F Event input EVENT 2 Dual load Measurement Print date and time yyy mm dd hh mm ss Load 1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Three phase unbalance factor UR 1 UR 2 Curre...

Page 268: ... x V V3 xxx x V 1 Single load Measurement Print date and time yyyy mm dd hh mm ss Integration start date and time Integration start time yyyy mm dd hh mm ss Elapsed time Elapsed time hhhh mm ss Voltage V V1 V2 V3 Current A 1 2 3 Active power W P Reactive power Var Q Apparent power VA VA Power factor PF Phase angle PA Frequency Hz F Electric energy Wh Wh Wh Regenerative energy Wh Wh Lagging reactiv...

Page 269: ...1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Current A 1 1 2 1 3 1 1 2 2 2 3 2 Active power W P 1 P 2 Reactive power Var Q 1 Q 2 Apparent power VA VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Frequency Hz F 1 F 2 Note1 Electric energy Wh Wh 1 Wh 1 Wh 2 Wh 2 Regenerative energy Wh Wh 1 Wh 2 Lagging reactive energy Varh Varh 1 Varh 2 Leading reactive energy Varh Varh 1 Varh 2 Eve...

Page 270: ...int date and time yyyy mm dd hh mm ss Demand start date and time demand period start date and time Demand start time yyyy mm dd hh mm ss Demand end date and time demand period end date and time Demand end time yyyy mm dd hh mm ss Elapsed time Elapsed time hhhh mm ss Number of demand periods Demand Voltage V V1 V2 V3 Current A 1 2 3 Active power W P Reactive power Var Q Apparent power VA VA Power f...

Page 271: ...Load 1 Load 2 Voltage V V1 1 V2 1 V3 1 V1 2 V2 2 V3 2 Note1 Current A 1 1 2 1 3 1 1 2 2 2 3 2 Active power W P 1 P 2 Reactive power Var Q 1 Q 2 Apparent power VA VA 1 VA 2 Power factor PF 1 PF 2 Phase angle PA 1 PA 2 Frequency Hz F 1 F 2 Total electric energy Wh Wh 1 Wh 2 Demand W Dem_P 1 Dem_P 2 Date of maximum demand Dem_P_Max_Date 1 Dem_P_Max_Date 2 Time of maximum demand Dem_P_Max_Time 1 Dem_P...

Page 272: ...1st through 13th order V1PA 1 to V1PA 13 V2PA 1 to V2PA 13 V3PA 1 to V3PA 13 Total rms voltage value V TOTAL_V1 All RMS TOTAL_V2 TOTAL_V3 Voltage THD IEEE THD IEEE _V1 THD IEEE _V2 THD IEEE _V3 Voltage THD CSA THD CSA _V1 THD CSA _V2 THD CSA _V3 Current A 1st through 13th order 1 1 to 1 13 2 1 to 2 13 3 1 to 3 13 Current content 1st through 13th order 1CONT 1 to 1CONT 13 2CONT 1 to 2CONT 13 3CONT ...

Page 273: ...m to be Saved Printed Current THD CSA THD CSA _ 1 THD CSA _ 2 THD CSA _ 3 Active power W 1st through 13th order P 1 to P 13 Power content 1st through 13th order PCONT 1 to PCONT 13 Power phase angle 1st through 13th order PPA 1 to PPA 13 Total power W TOTAL_P Total power factor TOTAL_PF Event input EVENT ...

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Page 275: ... W P Active power Var Q Reactive power 1 With reactive power method Var Q Reactive power 2 Without reactive power method VA Apparent power PF Power factor PA Phase angle Wh Active energy Wh Regenerative energy Varh Lagging reactive energy Varh Leading reactive energy UR Unbalance factor THD Total harmonic distortion IEEE CSA F f Frequency Crest factor VT Voltage transformer Same as PT CT Current t...

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Page 277: ...alues are used for the calculation Even if this calculation option is selected the CW140 makes calculations based on this method in the background where the polarity SQ determined by the method is used If the current lags behind the voltage no polarity is indicated If the current leads the voltage negative polarity is indicated Q SQ VA 2 P 2 SQ Polarity determined by reactive power method VA Appar...

Page 278: ...ctor is calculated as the ratio of the active power to the reactive power and is called a power ratio power factor Reactive power values calculated by the two methods above are the same if both the voltage and current are sine waves excluding harmonic content and balanced However if either the voltage or current is unbalanced or includes the harmonic content the reactive power values are different...

Page 279: ...check sheet is provided for each measurement mode total of 4 types The A RANGE setting depends on the clamp setting Relationship between the two items is marked with an asterisk The D A output setting is only valid when the optional D A output is installed Highlighted characters such as and represent factory settings or default settings for system reset Setting options for items that depend on wir...

Page 280: ... 3 4 5 6 7 8 9 10 cycles or OFF CH1 CH2 CH3 CH4 Expanded View Field Upper Middle Lower 20 200A 200 1000A 50 500A Logging When logging is set to ON 1 ON 2 OFF 1 Time 2 Trigger 3 Manual 1 Time 2 Timer 3 Trigger 4 Manual Internal Memory 1 ON 2 OFF FD 1 ON 2 OFF Printer 1 ON 2 OFF Start Stop hour minute second from Start hour minute 2 minutes to 1000 hours AINSⵧⵧⵧ CSV when not specified Start Stop Tim...

Page 281: ...oltage or Current Depends on the wiring type 1 ON 2 OFF 1 to 10000 0 01 to 10000 1 20 200A 2 200 1000A 3 50 500A 2 3 4 5 6 7 8 9 10 cycles or OFF 1 1 V 5 kWh 2 1 V 10 kWh 3 1 V 50 kWh 4 1 V 100 kWh 5 1 V 500 kWh 6 1 V 1 MWh Start Stop hour minute second from Start CH1 CH2 CH3 CH4 Regenerative Energy Calculation Integration Start Stop Time Timer Output Interval Output Destination Media File Name 1 ...

Page 282: ...0000 00 00000 0 000000 Wh kWh MWh GWh STANDARD 000 000 0000 00 00000 0 000000 Wh kWh MWh GWh Start Stop hour minute second from Start hour minute 1 kW to 1000 kW Reference Electric Energy Demand Demand Period Start Stop Time Timer Output Interval Output Destination Media File Name 1 Time 2 Trigger 3 Manual 1 Time 2 Timer 3 Trigger 4 Manual 1 2 3 4 6 8 10 or 12 hour 5 10 15 or 30 minute Voltage Cur...

Page 283: ...CT Ratio Clamp Setting Number of Averaging Cycles 1 ON 2 OFF Voltage or Current Depends on the wiring type 1 ON 2 OFF 1 to 10000 0 01 to 10000 1 20 200A 2 200 1000A 3 50 500A 2 3 4 5 6 7 8 9 10 cycles or OFF Place of Application Prepared by Date Settings Check Sheet Demand Measure Mode 2 2 CW140 Setting Options User Setting Item OFF V1 1 1 ...

Page 284: ...Total power 1 ON 2 OFF V1 1 ON 2 OFF V2 1 ON 2 OFF V3 1 ON 2 OFF I1 1 ON 2 OFF I2 1 ON 2 OFF I3 1 ON 2 OFF P 1 ON 2 OFF All orders ON Odd numberd orders ON Select each order 1 ON 2 OFF Total power factor 1 ON 2 OFF Event 1 ON 2 OFF IEEE Total harmonic distortion 1 ON CSA Total harmonic distortion 1 ON Start Stop hour minute second from Start hour minute 2 minutes to 1000 hours AHRMⵧⵧⵧ CSV when not...

Page 285: ... CH4 Order Voltage Current P or OFF 1 RMS value Power value 2 Contents 3 Phase angle 4 Total RMS value Total power 5 THD IEEE 6 THD CSA Selected from 1 to 13 Element Item Order Voltage Current P or OFF 1 RMS value Power value 2 Contents 3 Phase angle 4 Total RMS value Total power 5 THD IEEE 6 THD CSA Selected from 1 to 13 Element Item Order Voltage Current P or OFF 1 RMS value Power value 2 Conten...

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Page 287: ...lectric energy measure mode 9 1 to 10 4 Error messages 18 2 to 18 8 Event input 2 3 to 2 5 14 9 Expanded view 8 5 8 10 External control 2 3 14 8 F FDD Floppy disk drive 17 7 File handling 6 1 to 6 3 File name s 6 1 to 6 6 8 12 9 9 11 10 12 11 Frequency 8 1 Frequency source 5 2 7 15 8 3 8 13 9 10 11 11 12 12 Function keys 8 4 9 3 11 4 12 5 G Graphs 12 3 to 12 4 H Harmonics measure mode 12 1 to 12 1...

Page 288: ...8 15 8 16 Reactive power 1 8 1 Reactive power 2 8 1 Reactive power method 5 2 8 1 8 13 9 10 11 11 12 12 Reference power 11 1 11 8 Regenerative energy 9 1 9 9 RS 232C 5 3 15 1 to 15 7 S Sampling frequencies 7 14 to 7 15 Save 13 1 13 3 Save Print item s 8 13 to 8 14 9 10 to 9 12 11 11 to 11 12 12 11 12 13 to 12 14 Scaling function 3 8 7 19 Setup 8 10 to 8 14 9 7 to 9 13 11 8 to 11 13 12 9 to 12 14 S...

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Page 290: ...10 YOKOGAWA AMERICA DO SUL S A BRAZIL Phone 55 11 5681 2400 Facsimile 55 11 5681 1274 YOKOGAWA ENGINEERING ASIA PTE LTD SINGAPORE Phone 65 6241 9933 Facsimile 65 6241 2606 YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION KOREA Phone 82 2 551 0660 to 0664 Facsimile 82 2 551 0665 YOKOGAWA AUSTRALIA PTY LTD AUSTRALIA Phone 61 2 9805 0699 Facsimile 61 2 9888 1844 YOKOGAWA BLUE STAR LTD INDIA Phone 91 ...

Page 291: ...e suffix code type of AC adapter of CW140 When the suffix code of CW140 is F R or S For example CW140 S Safety standards EN61010 1 EN61010 2 031 Overvoltage category II Max input voltage 600Vrms Overvoltage category III Max input voltage 300Vrms Pollution degree 2 When the suffix code of CW140 is D When the meter is CW140 D Safety standards UL3111 1 First Edition CAN C22 2 No 1010 1 92 Overvoltage...

Page 292: ...en 0 001 and 999 999 Select the position of decimal point Increment Decrement Select the position of unit point Press the key Option appears in the middle of screen Selects the desired option Confirms the selection Reference Power on page 11 1 100 000kW 3 User s Manual Page App 2 18 Range of Communication commands DEMAnd REFErence is changed to DEMAnd REFErence NRf 1 00000E 03 to 9 99999E 11 kW 4 ...

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Summary of Contents for CW140

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YOKOGAWA CW140, User Manual, Page: 70 / 292

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Summary of Contents for CW140

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