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IM CW500-01EN

How Swell, Dip, Inrush Current, and Transient Are Measured

Events are detected from the rms values of single waveforms that overlap

each other at every half period. If an event is first detected in the rms value

of a single waveform, the beginning of that waveform is considered the

start of the event. If the event is no longer detected in the rms value of a

later waveform, the beginning of that waveform is considered the end of the

event. The detected event is assumed to continue from the start to the end.

Rms value (1)

Rms value (2)

Rms value (3) Rms value (5) Rms value (7) Rms value (9)

Rms value (4) Rms value (6) Rms value (8)

Measured

waveform

Rms

waveform

Start of dip End of dip

Duration

Rms value (1)

Rms value (2)

Rms value (3) Rms value (5) Rms value (7) Rms value (9)

Rms value (4) Rms value (6) Rms value (8)

Measured

waveform

Rms waveform

Hysteresis

Start of swell

Duration

End of swell

Threshold

Hysteresis

Threshold

(4)

(5)

(7) (8) (9)

(1) (2) (3)

(4)

(5)

(6)

(7) (8) (9)

(1) (2) (3)

(6)

Example of dip detection

* Interruption is detected with the same method.

Example of swell detection

* Inrush current is detected with the same method.

6.7 Power Quality

Summary of Contents for CW500

Page 1: ...User s Manual CW500 Power Quality Analyzer IM CW500 01EN 2nd Edition ...

Page 2: ...ication Software User s Manual IM CW500 61EN The supplied CD contains the PDF file of this manual This manual explains how to use the application software CW500 Power Quality Analyzer Getting Started Guide IM CW500 02EN The guide explains the handling precautions and basic operations of the CW500 and provides a list of specifications Application Software Installation Manual IM CW500 62JA This manu...

Page 3: ...ng or reproducing all or any part of the contents of this manual without the permission of YOKOGAWA is strictly prohibited Trademarks Microsoft Windows Windows 7 Windows 8 and Windows 10 are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries Adobe Acrobat and PostScript are either registered trademarks or trademarks of Adobe Systems Inco...

Page 4: ...amp on Probe 2 4 Chapter 3 Basic Operation 3 1 Description of Control Keys 3 1 3 2 Marks Displayed in the Top Area of the LCD 3 3 3 3 Display Symbols 3 4 3 4 Backlight and Contrast Adjustment 3 5 3 5 Screens and Screen Configuration 3 6 Chapter 4 Recording 4 1 Starting and Stopping Recording 4 1 4 2 Starting to Record with Quick start guide 4 3 Chapter 5 Setup 5 1 Settings 5 1 5 2 Basic Setup 5 2 ...

Page 5: ...ures 7 1 Chapter 8 Connecting to Peripheral Devices 8 1 Transferring Data to a PC 8 1 8 2 Signal Control with External Devices 8 2 8 3 Supplying Power through Measurement Lines 8 5 Chapter 9 PC Software for Configuration and Analysis 9 1 PC Software for Configuration and Analysis 9 1 Chapter 10 Troubleshooting 10 1 Troubleshooting 10 1 10 2 Error Messages and Corrective Actions 10 3 Appendix When ...

Page 6: ...and Displays instantaneous average maximum and minimum values for current voltage active power apparent power and reactive power Switch the screen to display integrated values Set a demand target value and display the demand values from start to finish See Displaying Instantaneous Integrated and Demand Displaying Vectors and Checking the Wiring Displays a vector diagram of voltage and current for ...

Page 7: ... harmonic components superimposed on the voltage and current for the measurement channel See Harmonic Analysis Displaying Power Supply Quality Events Displays the swell dip interruption transient inrush current and flicker of the measured voltage See Power Supply Quality Setup SET UP Configures the CW500 and measurement See Setup 1 1 Feature Outline ...

Page 8: ...ty Measurement This product supports international power quality measurement standard IEC61000 4 30 Class S It can perform highly accurate frequency and rms voltage measurements and harmonic analysis as well as simultaneously measure without gaps swell dip interruption transient inrush current and flicker that are necessary for capturing and monitoring power abnormalities Power Measurement This pr...

Page 9: ...cannot charge them on the CW500 If a power failure occurs while the CW500 is running off of AC power the power supply is automatically switched to battery power Display Screen This product has a color TFT LCD Easy Wiring and Compact Lightweight Design Wiring is easy as this product is a clamp type Its compact lightweight design makes it convenient to install and carry around Application Files save...

Page 10: ...Configuration Diagram Option Current input AC voltage input Power cord USB SD memory card PC AA alkaline batteries LR6 AA Ni MH batteries Digital output 1 ch to recorder or alarm Analog input 2 ch from thermometer or illuminometer ...

Page 11: ...ting Started Guide Safety Precautions Page vii Checking the wiring 6 4 Vectors Page 6 14 Configuring measurement settings and save method 5 3 Measurement Settings Page 5 12 and 5 4 Record Settings Page 5 25 Checking measured values 6 1 Instantaneous Value W Page 6 1 and 6 4 Vectors Page 6 14 Starting and stopping recording 4 6 Starting and Stopping Recording Page 4 12 Checking Measured Data Chapte...

Page 12: ...2 1 IM CW500 01EN 2 1 Display LCD and Control Keys Display LCD Control keys Chapter 2 Component Names ...

Page 13: ...o wire 3 system 1P2W 3 VN V1 A1 A2 A3 Single phase two wire 4 system 1P2W 4 VN V1 A1 A2 A3 A4 Single phase three wire 1 system 1P3W 1 VN V1 V2 A1 A2 Single phase three wire 2 system 1P3W 2 VN V1 V2 A1 A2 A3 A4 Three phase three wire 1 system 3P3W 1 VN V1 V2 A1 A2 Three phase three wire 2 system 3P3W 2 VN V1 V2 A1 A2 A3 A4 Three phase three wire 3A 3P3W3A V1 V2 V3 A1 A2 A3 Three phase four wire 3P4...

Page 14: ...0 01EN 2 3 Side Panel With the Connector Cover Closed SD memory card area USB area Analog input digital output area With the Connector Cover Open SD memory card slot USB port Analog input digital output terminals ...

Page 15: ...e end of the voltage probe Barrier Current Clamp on Probe Barrier Barrier A mark for securing the minimum required creep and spatial distance to prevent electric shock during operation When taking a measurement be careful that your finger or the like does not cross over the barrier ...

Page 16: ...ting Power key Turns the power on and off Display SETUP Key Changes basic measurement recording saved data and other settings START STOP key Starts or stops recording Display SW key See page 3 2 Status LED Shows the recording status Green solid Recording Green blinking Standby Red blinking Backlight off PRINT SCREEN key Saves the screen as a BMP file DATA HOLD KEY LOCK key DATA HOLD Holds the disp...

Page 17: ...eforms Harmonic analysis key Displays harmonic voltage harmonic current and harmonic power QUALITY key Displays the occurrence of swell dip interruption transient inrush current and flicker W Wh key Displays instantaneous values integrated values and demand Vector key Displays phases ...

Page 18: ...ed off SD memory card can be used Recording to SD memory card Not enough space in SD memory card to record Unable to access SD memory card Possible to record to internal memory This appears when recording is started without an SD memory card inserted Recording to internal memory Not enough space in internal memory to record Waiting to record Recording measurement values Recording medium is full US...

Page 19: ...PA3 Phase angle Lag C3 Phase advance capacitor capacitance Lead WP Active energy consumption WS Volt ampere hours consumption WQi Reactive energy lag WP Active energy regeneration WS Volt ampere hours regeneration WQc Reactive energy lead THD Voltage current distortion Pst 1min 1 minute voltage flicker Pst Short term voltage flicker Plt Long term voltage flicker 1 The V and VL displays can be cust...

Page 20: ... brightness and display contrast To adjust the brightness or contrast use the arrow keys to move the slide bars After adjusting press ENTER to confirm To cancel the adjustment press ESC or LCD again Backlight brightness can be changed to any of the 11 available levels Brightness adjustment Contrast can be changed to any of the 11 available levels Contrast adjustment ...

Page 21: ...hing the W Wh Screen Each time you press function key F1 the display screen changes Demand Customize Zoom 4 windows 8 windows Zoom in on selected items Select and change the items to be displayed Trend Measurement variation trends are displayed on a graph Wh Integrated value W instantaneous value ...

Page 22: ... Vector Switching the Vector Screen Displays the diagram of the selected wiring Wiring diagram Displays the results of check items Wiring check Waveform Switching the Waveform Screen 3 5 Screens and Screen Configuration ...

Page 23: ...1EN 3 5 Screens and Screen Configuration Harmonics Switching the Harmonic Analysis Display Items Voltage Linear Overall display List percentage content Logarithm Zoom Phase angle Rms value Current Power Current Power ...

Page 24: ...CW500 01EN Power Quality Switching the Quality Display Items Event Flicker Setup Switching the Setup Display Items Use the left and right arrow keys switch between screens 3 5 Screens and Screen Configuration ...

Page 25: ...y setting the items by following the instructions displayed on the screen However the items that you can set are those related to wiring and recording If you need to specify other settings set them from the SETUP menu Start now Recording starts immediately using the current settings Procedure Using the up and down arrow keys select Quick start guide or Start now and press ENTER To cancel press ESC...

Page 26: ...rom the start of recording is displayed Recording method Manual The recording start date and time are displayed Constant rec The recording start end date and time are displayed Time period rec The recording start date and time recording period and recording time are displayed Save to The location where measured data is being recorded to is displayed Record items Measurement items being recorded ar...

Page 27: ...execute this check in order to record in the correct conditions The test takes about 10 seconds Select the item you want to record Greater the number of items the greater the file size which means shorter recording time Select the wiring system to be measured Select a proper wiring system for accurate measurements See page 4 5 See the Getting Started Guide IM CW500 02EN See page 4 6 Check wiring c...

Page 28: ...g will start When recording starts the screen shows REC and the Logging LED turns green To stop recording press START STOP and follow the instructions on the screen See page 5 29 See page 4 9 Select the rec method Select the rec interval Select the rec method Confirm to start recording Start recording 4 2 Starting to Record with Quick start guide ...

Page 29: ... 1P2W Load 4 1P2W N L N L N L N L A4 A3 A2 A1 VN V1 N Load 1 1P3W Load 2 1P3W N L2 L2 N A4 A3 A2 A1 VN V1 L1 L2 V2 L1 R L2 S Load 1 3P3W Load 2 3P3W L2 S L3 T A4 A3 A2 A1 VN V1 L1 R L3 T V2 L2 S L3 T L1 R L2 S Load 3P3W L2 S L3 T A3 A2 A1 V3 V1 L1 R L3 T V2 L1 R L2 S Load 3P4W L2 S L3 T A3 A2 A1 V3 V1 L1 R L3 T V2 L1 R VN N N Power 3P4W 3P3W 2 3P3W 1 3P3W3A 1P3W 1 1P3W 2 1P2W 1 1P2W 2 1P2W 3 1P2W ...

Page 30: ...item If measuring at site with extremely poor power factor this check may fail even if the wiring is correct Wiring check Select the OK or NG of a test result to see the details Displays the results of a system operation check Self diagnosis Automatically detects connected current probes and sets the range to their maximums Sensor detection 4 2 Starting to Record with Quick start guide ...

Page 31: ...wiring Settings are not appropriate for the measurement line wiring system The voltage clip is not firmly connected to the DUT Voltage probe is not correctly inserted into the AC voltage input terminal Voltage phase AC voltage input phase is within 10 of the reference value appropriate vector Voltage probe is not connected correctly The connected channel is incorrect Current input Current input is...

Page 32: ...ent clamp on probes for measurement cause unknown Current clamp on probe is not firmly connected to the instrument Troubleshooting Connect the current clamp on probe that failed to be detected to a channel that detection was successful and test again If the same channel fails again the instrument may be malfunctioning If detection fails on the channel connected to the current clamp on probe that f...

Page 33: ...d during the specified time slot at a given interval for the specified period If the date and time are set as shown above recording will be performed during the time slots i to viii below Recording is not performed from 18 00 to 8 00 of the next day i 8 00 to 18 00 on August 1 2013 ii 8 00 to 18 00 on August 2 2013 iii 8 00 to 18 00 on August 3 2013 iv 8 00 to 18 00 on August 4 2013 v 8 00 to 18 0...

Page 34: ...ress ESC On a screen that shows selectable items in a table form you can use the up down left and right arrow keys to select an item On the wiring selection screen shown on the left you can use the up down left and right arrow keys to select the wiring system to be measured and ENTER to confirm To cancel the settings and return to the previous screen press ESC To enter values such time use the lef...

Page 35: ...e before starting to record Only wiring and recording settings can be specified in Quick start guide Nominal voltage nominal frequency threshold for power quality events included in the measurement settings and filter coefficient ramp for flicker measurement must be set in advance Set these items from the SETUP menu Note that the Clamp option clamp on probe setting is automatically set to OFF 4 2 ...

Page 36: ... that even if you change the settings if you turn off the power while in SET UP mode the settings will not take effect Basic Set common measurement items Measurement Set specific measurement items Recording Set the saving method Saved Data Edit recorded data or change the instrument settings Others Configure environmental settings Settings Measurement Demand Harmonics Power quality Flicker Phase a...

Page 37: ...5 2 IM CW500 01EN 5 2 Basic Setup Procedure Press SETUP Use the left and right arrow keys to select the Basic tab ...

Page 38: ... not used in Clamp wiring can measure only rms values and harmonics Procedure Use the up and down arrow keys to move to Wiring Press ENTER to show a pull down menu Select the wiring system Press ENTER to confirm or ESC to cancel Clamp optional clamp on probe Procedure Use the up and down arrow keys to move to Clamp Press ENTER to show a pull down menu Use the up and down arrow keys to select the o...

Page 39: ...ou can use the F1 Diagram key to show the wiring diagram of the selected wiring system Procedure After showing the wiring diagram press F1 previous wiring system or F2 next wiring system to change the wiring system Press ENTER to confirm or ESC to cancel 5 2 Basic Setup ...

Page 40: ...000V Default value Procedure Use the up and down arrow keys to move to V Range Press ENTER to show a pull down menu Use the up and down arrow keys to select the voltage range Press ENTER to confirm or ESC to cancel VT Ratio Set this when an external VT voltage transformer is installed in the system The VT ratio will be applied to all voltage measurements Settings 0 01 to 9999 99 1 00 Default value...

Page 41: ...anteed When using a VT or CT take into consideration the VT or CT accuracy phase characteristics and the like in addition to the instrument accuracy If the voltage or current on the measurement line exceeds the maximum measurement range of this instrument you can use a VT or CT with specifications appropriate for the measurement line voltage and current to measure the secondary side and display th...

Page 42: ... move to Nominal V Press ENTER to show a value entry window Use the arrow keys to enter the nominal voltage Press ENTER to confirm or ESC to cancel The input range is shown in a pop up Default Values When you move to the Nominal V item you can press F1 default values to show a list of typical nominal voltages that you can choose from Settings 100V 101V 110V 120V 200V 202V 208V 220V 230V 240V 277V ...

Page 43: ... select a current clamp on probe from the pull down menu the rated current and the conductor size are displayed in a pop up Settings 96060 2A Leak current clamp on probe 96061 5 50A AUTO 96062 10 100A AUTO 96063 20 200A AUTO 96064 50 500A AUTO 96065 100 1000A AUTO 96066 300 1000 3000 Power measurement clamp on probe Default value Procedure Use the arrow keys to move to Clamp Press ENTER to show a ...

Page 44: ...be performed Procedure Use the arrow keys to move to A Range Press ENTER to show a pull down menu Use the up and down arrow keys to select the range Press ENTER to confirm or ESC to cancel CT Ratio Set this when an external CT current transformer is installed in the system The CT ratio will be applied to all current measurements For details on CT see VT CT on page 5 6 Settings 0 01 9999 99 1 00 Th...

Page 45: ...if a current clamp on probe whose type is not appropriate for the DUT is connected or if the type fails to be detected this will not work If this happens an error message appears in a pop up and Clamp A Range and CT ratio settings will be cleared For details on sensor detection see section 4 2 Sensor Detection 5 2 Basic Setup ...

Page 46: ...down arrow keys to select the range Press ENTER to confirm or ESC to cancel Frequency Set the nominal frequency for the DUT If the voltage frequency cannot be determined such as during a power failure the CW500 measures based on the preset nominal frequency Settings 50Hz 60Hz Default value Procedure Use the up and down arrow keys to move to Nominal f Press ENTER to show a pull down menu Use the up...

Page 47: ...5 12 IM CW500 01EN 5 3 Measurement Setup Procedure Press SETUP Use the left and right arrow keys to select the Measurement tab Demand Measurement Settings ...

Page 48: ... s 30 s 1 min 2 min 5 min 10 min 15 min 30 min The interval cannot be set to a value longer than the measurement interval Settings Not be used 10 min 15 min 30 min Default value Procedure Use the up and down arrow keys to move to Measurement Press ENTER to show a pull down menu Use the up and down arrow keys to select the time Press ENTER to confirm or ESC to cancel Target Set the demand measureme...

Page 49: ... kW MW GW TW Inspection cycle Select the cycle time during which a buzzer is sounded when the estimated value exceeds the target value during demand measurement You cannot set the inspection cycle longer than the measurement cycle The inspection cycles that can be selected depending on the measurement cycle are shown below Measurement cycle setting Selectable inspection cycles 10 min or 15 min 1 m...

Page 50: ...le 2 is because 600 kW of power is consumed in the first 15 minutes In this case the demand for measurement cycle 2 can be suppressed to 500 kW the same as measurement cycle 1 by reducing the power of the last 15 min to 400kW Note that if the power consumption during the first half of cycle 2 is 1000 kW and the last 15 minutes is 0 kW no load the average power is also 500 kW If Inspection is set t...

Page 51: ...ure Use the up and down arrow keys to move to THD calc Press ENTER to show a pull down menu Use the up and down arrow keys to select the calculation method Press ENTER to confirm or ESC to cancel MAX hold If MAX hold is set to ON the maximum percentage content from the start of measurement is marked on the harmonics graph Settings ON OFF Default value Procedure Use the up and down arrow keys to mo...

Page 52: ...TER to open a value entry window Use the arrow keys to enter the allowable values Press ENTER to confirm or ESC to cancel The input range is shown in a pop up When the allowable range entry window is displayed the following operations become valid The default allowable values of each harmonic order are the values of the international EMC standard IEC61000 4 7 industrial environment Class 3 If you ...

Page 53: ...hreshold set previously appears Notes on Setting the Thresholds Because the SWELL DIP and INT thresholds are set as percentages of the nominal voltage if the nominal voltage is changed the threshold voltages also change The default value is the peak voltage 300 Because the InrushCurrent threshold is set as a percentage of the current range if the current range is changed the threshold current also...

Page 54: ... the hysteresis Press ENTER to confirm or ESC to cancel The input range is shown in a pop up Transient Over voltage Impulse Set the transient threshold as an instantaneous voltage The selectable range varies depending on the VT ratio Settings 50 to 2200 Vpeak 300 of the nominal voltage Default value Procedure Use the arrow keys to move to Transient Press ENTER to show a value entry window Use the ...

Page 55: ...ercentage of the nominal voltage The input range is shown in a pop up Inrush current Instantaneous current rise Set the inrush current threshold rms current in one cycle as a percentage of the maximum value of the current range The selectable range varies depending on the CT ratio Hysteresis is applied to this threshold Settings 0 to 110 100 of the current range Default value Procedure Use the up ...

Page 56: ... 9 1 2 3 Dip Instantaneous voltage drop Set the dip threshold rms voltage in one cycle as a percentage of the nominal voltage The selectable range varies depending on the VT ratio Hysteresis is applied to this threshold Settings 0 to 100 90 of the nominal voltage Default value Procedure Use the up and down arrow keys to move to DIP Press ENTER to show a value entry window Use the arrow keys to ent...

Page 57: ...etting a similar threshold for dip Settings 0 to 100 10 of the nominal voltage Default value Procedure Use the up and down arrow keys to move to INT Press ENTER to show a value entry window Use the arrow keys to enter a percentage of the nominal voltage The input range is shown in a pop up Example of Dip and Interruption Detection For details see Displaying Recorded Events on page 6 27 Rms value 1...

Page 58: ...minal frequency and filter coefficient must be set properly for the actual DUT If possible use the same voltage for the nominal voltage and filter coefficient Settings 230V 220V 120V 100V Default value Procedure Use the up and down arrow keys to move to Filter Press ENTER to show a pull down menu Select the appropriate filter coefficient Press ENTER to confirm or ESC to cancel 5 3 Measurement Setu...

Page 59: ...the power supply because current phases lag behind the voltage phases Usually phase advance capacitors are installed in high voltage receiving installations to improve this situation Settings 0 5 to 1 1 000 Default value Procedure Use the up and down arrow keys to move to Target PF Press ENTER to show a value entry window Use the arrow keys to enter the target power factor The input range is shown...

Page 60: ...gth of time that measured data can be recorded to an SD memory card or internal memory varies depending on the number of recorded items and interval Recording time can be extended by setting unnecessary record items to Do not record For details Possible Recording Time on page 5 30 Power This is fixed to Record Power measurement items are always recorded ...

Page 61: ...elected To select Record change the current range to a fixed range first If AUTO range is selected measurements according to international power quality standard IEC61000 4 30 Class S cannot be performed Settings Record Not record Default value Procedure Use the up and down arrow keys to move to Harmonics or Event Press ENTER to show a pull down menu Use the up and down arrow keys to select Record...

Page 62: ...icker Pst Long term voltage flicker Plt Phase advance capacitor capacitance Active energy consumption regeneration Reactive power consumption lag lead Volt ampere hours consumption regeneration Reactive power regeneration lag lead Demand W VA Target demand W VA Total harmonic voltage distortion F R Total harmonic current distortion F R Harmonic measurement data Harmonic voltage current 1 to 50th o...

Page 63: ... record interval the record interval is automatically set to the same setting as the measurement interval For details see Demand Measurement Settings page 5 12 Settings 1s 2s 5s 10s 15s 20s 30s 1min 2min 5min 10min 15min 20min 30min 1h 2h 150 180 cycle approx 3 s Default value The intervals 150 180 cycles approx 3 sec are defined in the international power quality standard IEC61000 4 30 Data will ...

Page 64: ...ing the START STOP key Constant rec Set the time to start and stop recording The CW500 records repeatedly during the period between the start and stop times at the specified interval For details see Reserving by Specifying the Date and Time or Reserving a Repetitive Recording page 4 9 Settings Settings Start date time Day Month Year Hour Minute 00 00 0000 00 00 Stop date time Day Month Year Hour M...

Page 65: ...ime entry window Use the arrow keys to enter the time Press ENTER to confirm or ESC to cancel Possible Recording Time Estimated recording time for a 2GB SD memory card Interval REC item Interval REC item Power Harmonics Power Harmonics 1 s 13 days 3 days 1 min 1 year or more 3 months 2 s 15 days 3 days 2 min 2 year or more 6 months 5 s 38 days 7 days 5 min 6 year or more 1 year or more 10 s 2 5 mo...

Page 66: ...language to be displayed Settings English Japanese French Spanish Polish Korean Chinese Default value However this setting will not be initialized even when the system is reset Procedure Use the up and down arrow keys to move to Language Press ENTER to show a pull down menu Use the up and down arrow keys to select the language Press ENTER to confirm or ESC to cancel ...

Page 67: ...u Use the up and down arrow keys to select the format Press ENTER to confirm or ESC to cancel CH color Specify the colors for voltage and current of each channel You can change the item label text colors graph colors wiring diagram s channel colors and so on Settings VN is only supported in wiring diagrams White Yellow Orange Red Gray Blue Green The default color settings are VN Yellow 1CH Red 2CH...

Page 68: ...ime Press ENTER to confirm or ESC to cancel ID Number Set the CW500 ID number Assigning numbers in an organized manner will make it convenient to analyze recorded data when several CW500s are used or when several locations are measured periodically using a single CW500 Settings 00 001 99 999 00 001 Default value Procedure Use the arrow keys to move to ID Number Press ENTER to show a value entry wi...

Page 69: ...wn menu Use the up and down arrow keys to select on or off Press ENTER to confirm or ESC to cancel Bluetooth option Enable or disable the built in Bluetooth function Disable it when you are not using Bluetooth communication Settings On Off Default value Procedure Use the up and down arrow keys to move to Bluetooth Press ENTER to show a pull down menu Use the up and down arrow keys to select on or ...

Page 70: ... for a given period If the CW500 is running off of batteries Disable auto off cannot be selected in order to save battery power Mode Settings AC power Power off in 5 min Disable auto off Battery Power off after 2 min Default value Procedure Use the up and down arrow keys to move to Backlight Press ENTER to show a pull down menu Use the up and down arrow keys to enable or disable the backlight auto...

Page 71: ...erted in the instrument data will be automatically saved to the card Do not insert an SD memory card if you want to save to the internal memory You cannot set the save destination We recommend that you save data to an SD memory card Up to three measured data files and eight other files can be saved to the internal memory Recorded Data Operation Procedure Use the up and down arrow keys to move to t...

Page 72: ...reen Data location Scroll bar Check box Procedure Use the up and down arrow keys to move to the data you want to delete Press ENTER to select it Press F2 to show a delete confirmation message Use the left and right arrow keys to select Yes or NO Press ENTER to confirm When you select a data file the corresponding check box is selected You can delete several data files at once Delete Press F2 delet...

Page 73: ...rding time when only power parameters are recorded Power Harmonics Estimated possible recording time when power and harmonic parameters are recorded Max number of saved data Internal memory only Measured data Number of completed measurements The maximum number of files that can be saved in the internal memory is three Settings Print screen Number of recorded settings and screenshots The maximum nu...

Page 74: ...ll bar Check box Procedure Use the up and down arrow keys to move to the data you want to transfer Press ENTER to select it Press F2 to show a delete confirmation message Use the left and right arrow keys to select Yes or NO Press ENTER to confirm When you select a data file to be transferred the corresponding check box is selected You can transfer several data files at once Transfer Press F2 tran...

Page 75: ...screen Format This is used to format an SD memory card or internal memory When you format all the saved data will be deleted Save necessary data to a different storage medium before formatting Data location Scroll bar Procedure Press F2 to show a format confirmation message Use the left and right arrow keys to select Yes or NO Press ENTER to confirm Format Press F2 format to show a confirmation me...

Page 76: ...selected medium is displayed in the upper left of the screen Free size Press F4 free space to display a pop up screen showing the selected medium information Press ENTER close to return to the format screen For details see Space on page 5 38 Back Press F1 back to return to the Saved data screen 5 6 Saved Data ...

Page 77: ...tem and start saving the files from number zero and when sharing a single SD memory card between several CW500s Note that if all the file numbers from 0 to 9999 are used up measured data files are also overwritten If files are deleted or the folder or files are renamed from a PC or the like data operations on the CW500 and analysis using CW500 Viewer will no longer be possible Do not change folder...

Page 78: ... Interval data File name SUP S 0000 File No 0000 to 9999 CW5 Measurement setup INI S 0000 CW5 Power measurement INP S 0000 CW5 Harmonic measurement INH S 0000 CW5 Dest code S SD memory card M Internal memory System setup data Power quality data File name EVT S 0000 File No 0000 to 9999 CW5 Waveform WAV S 0000 CW5 V A change VAL S 0000 CW5 Dest code S SD memory card M Internal memory Event type 5 6...

Page 79: ... not sorted by recording date The data recording dates are listed to the right of file names Note that dates of data files transferred from the internal memory to an SD memory card are the dates when they were transferred A scroll bar appears when not all the data can be displayed on the screen Data location Scroll bar Procedure Press F2 to show a save confirmation message Use the left and right a...

Page 80: ...s see Space on page 5 38 Back Press F1 back to return to the Saved data screen Settings That Are Saved Basic Setup Measurement Setup Settings Settings Wiring Demand Measurement interval Voltage range Inspection cycle VT ratio Target value Nominal voltage Harmonics THD total harmonic distortion calculation method Clamp Current range Allowable range CT ratio MAX hold DC range Power quality Hysteresi...

Page 81: ... dates are listed to the right of file names Note that dates of data files transferred from the internal memory to an SD memory card are the dates when they were transferred A scroll bar appears when not all the data can be displayed on the screen Data location Check box Scroll bar Procedure Use the up and down arrow keys to move to the data you want to transfer Press ENTER to select it Press F2 t...

Page 82: ...ge the save destination The current save destination is displayed with a mark in the upper left of the screen Free size Press F4 free space to display a pop up screen showing the selected medium information Press ENTER close to return to the data transfer screen For details see Space on page 5 38 Back Press F1 back to return to the Saved data screen 5 6 Saved Data ...

Page 83: ... Press F2 to display a list Ch1 Ch2 Ch3 Total Elapsed time selected interval Optional clamp on probe measurement Channel 3 measurement Channel 2 measurement Channel 1 measurement Multiple measurement values are displayed on a single screen The displayed items and their display positions can be changed using keys Chapter 6 Display Items of Each Screen ...

Page 84: ...tage An2 Neutral line current PA3 Voltage current phase difference Lag C3 Phase advance capacitor capacitance Lead 1 The V and VL displays can be customized when 3P4W is selected 2 An appears only when 3P4W is selected 3 PA and C can be displayed pressing F4 customization Line voltages are converted into phase voltages to determine currents and phase angles for PA of 3P3W3A Example Instantaneous v...

Page 85: ...le phase three wire system 1 or 2 Measured values on 1ch V1 A1 Sum of 1ch and 2ch of 1 system Measured values on 2ch V2 A2 Sum of 1ch and 2ch of 2 systems Total values Measured values on 1ch V1 A3 Measured values on 2ch V2 A4 Sum of 1ch and 2ch of 1 system Sum of 1ch and 2ch of 2 systems 2 system 1 system Σ 1P3W 1 to 2 three phase three wire two wattmeter system 1 or 2 1 system 2 system Σ Measured...

Page 86: ...e the same because the display update rate is also 1 second Wh Integrated value Press F1 Wh to switch to a screen that shows integrated values For details see section 6 2 Integrated Value Wh on page 6 9 Zoom Press F2 zoom to switch between zooming in on four selected measurement values or eight selected measurement values For details see Zoom Display on page 6 5 Trend graph Press F3 trend to switc...

Page 87: ...s you want to display From the list of measurement items in the left menu select the items you want to display The right menu will display the measurement item with channels that you can choose from From the right menu select the measurement items you want to display Procedure Use the arrow keys to move to the item you want to display Press ENTER to show a selection menu Use the arrow keys to sele...

Page 88: ...to move to the type of value you want to display Press ENTER to show a pull down menu Use the arrow keys to select a type Press ENTER to confirm or ESC to cancel List Display Press F2 list to display all the values in a list 4 split 8 split Press F3 4 split 8 split to set the number of items to display on one screen to four or eight Displaying a Trend Graph Elapsed time Different colors for each c...

Page 89: ...and trend graphs of each channel The selection of Σ or CH will apply to all trend graphs Selecting Σ will display the trend graph of the sum of each system and the total sum Selecting CH will display the trend graph of each channel If you select Σ when rms current value A is selected for 3P4W neutral line currents An will be displayed on the trend graph List Display Press F3 list to display all th...

Page 90: ...ant to display Press ENTER to confirm or ESC to cancel Use the left and right arrow keys to select OK or Cancel Press ENTER to confirm or ESC to cancel Voltage and current measurement items can only be changed other voltage and current measurement items Likewise power and phase advance capacitor measurement items can only be changed to other power and phase advance capacitor measurement items For ...

Page 91: ...lay the integrated value Wh screen Elapsed time total amount sum per system Σ Σ The power that flows during a given period is displayed as integrated power Display Symbol WP Active energy Consumption WQ Var hours Lag WS Volt ampere hours Consumption Regeneration Lead Regeneration ...

Page 92: ...tems see Wiring System Settings in section 5 2 Changing the Displayed Channels Use the up and down arrow keys to change the displayed channels For the relationship between wiring and channels see Wiring System Settings in section 5 2 Demand Press F1 demand to switch to a screen that shows demand values For details section 6 3 Demand on the next page 6 2 Integrated Value Wh ...

Page 93: ...d measurement a warning buzzer sounds at each inspection cycle Display Items Remaining time time left Demand interval is counted down DEM Target Demand target value DEM Guess Estimated demand value after the measurement interval of the current load Present value Measurement interval Elapsed time is calculated as time elapses DEM Present Demand value average power within a demand interval WP x 1 ho...

Page 94: ...esent value as a percentage of the target value Present value Target value is displayed DEM G The estimated value as a percentage of the target value Estimated value Target value is displayed Interval Saved point Estimated value Demand value Present Target value Time left Inspection cycle Inspection cycle Inspection cycle A warning buzzer sounds when the estimated value exceeds the target value af...

Page 95: ... the present display range Display Items Demand measurement Recorded date Demand value at the cursor is displayed with the recorded date and time End of demand Most recent recording time Demand value Start of demand Rec start time Target value Most recent Demand value Max measured demand displayed on the measurement screen Start of demand and recording start date and time are displayed when the gr...

Page 96: ...ed 2 Phase angle is displayed using the V1 phase as the reference 0 Vector display V rms voltage1 Phase angle2 A rms current Phase angle2 Solid circle line Maximum voltage current range Vector display rms voltage solid line rms current dotted line 0 180 Phase angle leading 0 to 180 Phase angle lagging 0 to 180 ...

Page 97: ...tion with reference to V1 For 3P3W3A 3P4W unbalance ratio is also displayed While the measured voltages and currents are balanced the following vectors will be displayed 3P3W3A Ch2 90 Ch1 30 Ch2 60 Ch1 0 Ch2 180 Ch1 0 Ch2 180 Ch1 0 0 0 A V 3P3W A V 1P3W A V 1P2W Ch3 120 Ch2 120 Ch1 0 Ch3 120 Ch2 120 Ch1 0 Ch3 90 Ch2 150 Ch1 30 Ch3 120 Ch2 120 Ch1 0 A V 3P4W A V The following figure is an example o...

Page 98: ...gth of current vector lines 1x 2x 5x 10x Wiring Diagrams Press F3 diagram to show the wiring diagram of the selected wiring system For details see Wiring Diagram in section 5 2 Wiring Check Press F4 wiring check to display the results of the wiring check If measuring at site with extremely poor power factor this check may fail even if the wiring is correct For details see Wiring Check in section 4...

Page 99: ... colors for each channel Voltage and current waveforms are displayed for up to 10 cycles at 50 Hz and up to 12 cycles at 60 Hz If switched to the waveform screen the scale is automatically set so that the waveform amplitude and period are displayed at their maximum size Changing the Displayed Waveforms Use the up and down arrow keys to change the displayed waveforms ...

Page 100: ...n Press F2 A magnification to set the vertical magnification of the current waveform 0 1x 0 5x 1x 2x 5x 10x 0 1x 0 5x 1x 2x 5x 10x t Magnification Press F3 t magnification to set the time axis horizontal magnification 1x 2x 5x 10x 1x 2x 5x 10x full scale Press F4 full scale to set a magnification that displays the voltage and current waveforms at their maximum size 6 5 Waveform ...

Page 101: ... rms line voltages are displayed A Current THD Voltage total harmonic distortion is displayed while V is displayed Current total distortion factor is displayed while A is displayed Total harmonic distortion is calculated according to the selected THD calculation method P Active power of each channel In ΣP System total total sum Active power In Out Out ...

Page 102: ...nt Percentage content of each harmonic in reference to the fundamental waveform Percentage content Harmonic analysis up to the 15th order Scroll bar In the above example log and zoom are selected In this case the upper limit of the percentage content is 10 and harmonics up to the 15th are displayed on one screen Press the left and right arrow keys to scroll the display range The fundamental wavefo...

Page 103: ...he start of measurement are displayed These values can be reset by changing the setting starting a recording or holding down ESC for at least 2 seconds It cannot be reset however while recording is in progress Graph color If there are many measurement channels graphs are displayed with different colors for each channel Exceeding the threshold Displayed when measured values exceed the preset allowa...

Page 104: ...you select While P power is played phase differences between voltage and current are displayed Inflow is 0 to 90 and outflow 90 to 180 Log Linear Press F2 log linear to change the upper limit of percentage content vertical axis of the bar graph to 10 and display the bar graph This is useful for analyzing low level harmonics Full zoom Press F3 zoom full to display the entire harmonics from 1st to 5...

Page 105: ...rder in a list Display Symbol V Voltage1 A Current P2 Active power of each channel In ΣP2 System total total sum Active power In Out Out 1 For 3P3W3A rms line voltages are displayed 2 The letters and numbers displayed at the top represent the displayed parameter and the channel or system number If there is a space between the letter P and the number only the system number is displayed In this case...

Page 106: ...ayed Percentage Content Phase Angle RMS Value Power Press F2 percentage content phase angle rms value power to change the measurement items displayed in the list If V voltage or A current is selected select percentage content phase angle in reference to V1 0 or rms value If P ΣP power is selected select percentage content phase angle current to voltage difference between channels or power V A P ΣP...

Page 107: ...n cause phase advance capacitor and reactor burnouts transformer buzz circuit breaker malfunction flicker in TV images and noises in audio devices Voltage swell RMS Inrush current occur when the power line switch is turned on causing the voltage to increase temporarily Equipment robots and other machines may shut down or PCs and office appliances may be reset Voltage dip RMS Inrush current occurs ...

Page 108: ...s in power supply voltage may occur Unbalance rate Heavy loading on specific phase occurs due to fluctuations in the power line load or unbalanced extension of installations This causes distortions in voltage and current waveforms dips and negative sequence voltages Unbalanced voltage and current motor instability negative sequence voltages and harmonics will occur Flicker The load on a particular...

Page 109: ...ing event check the interval measurement data For power quality analysis short interval recording is effective Time of occurrence The times recorded when the start and end of an event were detected Event Detection on Poly Phase Systems Interruption The start of an event is detected when the voltages of all the relevant channels for the wiring system are interrupted The end of the event is detected...

Page 110: ...he detected event is assumed to continue from the start to the end Rms value 1 Rms value 2 Rms value 3 Rms value 5 Rms value 7 Rms value 9 Rms value 4 Rms value 6 Rms value 8 Measured waveform Rms waveform Start of dip End of dip Duration Rms value 1 Rms value 2 Rms value 3 Rms value 5 Rms value 7 Rms value 9 Rms value 4 Rms value 6 Rms value 8 Measured waveform Rms waveform Hysteresis Start of sw...

Page 111: ...ues are recorded together with the event waveform and rms variation data Note that for the event waveform only the 200 ms period within the 1 second data update interval is recorded Event Waveform The voltage and current waveform data of all channels in the 200 ms period 10 cycles for 50 Hz 12 cycles for 60 Hz that includes the event data is recorded 8192 points If different events occur within th...

Page 112: ...Event start waveform approx 200 ms Event end waveform approx 200 ms Rms waveform Event start rms value variation approx 1 s Even end rms value variation approx 1 s Changing the Displayed Area Use the up and down arrow keys to vertically scroll the screen thereby changing the displayed area Flicker Press F1 flicker to switch to a screen that shows flicker values For details see Displaying a List of...

Page 113: ...flicker This phenomenon is called voltage flicker and its severity level is expressed by Pst and Plt Display Symbol Remaining time time left The countdown time until a Pst calculation completes This usually takes about 10 minutes V Phase voltage For 3P3W and 3P3W3A rms line voltages are displayed f Frequency Pst 1min Severity of short term flicker measured over 1 minute This is useful for power qu...

Page 114: ...raph of Pst 1 min Pst 1min Most recent Elapsed time Maximum Pst 1min The Pst 1min measured in the recent 120 minutes is displayed on the trend graph Display Symbol Pst 1min Severity of most recent short term flicker measured over 1 minutes Maximum The maximum Pst 1min value measured since the start of measurement The display is updated every time the measured value exceeds the previous maximum val...

Page 115: ...ecorded date The Plt of each channel at the cursor is displayed with the recorded date and time Maximum Measured Plt Most recent Plt Rec start time Most recent recording time The recording start date and time are displayed when the Plt trend graph does not fit on one screen Display Symbol Maximum The maximum Plt value measured since the start of measurement The display is updated every time the me...

Page 116: ... clears key lock Turning Off the Backlight Press LCD to turn off the backlight Pressing a key other than the power key turns on the backlight Backlight Auto Off When Connected to an AC Power Supply If you do not perform any operations for 5 minutes the backlight automatically turns off To turn it back on press any key other than the power key You can also disable the backlight auto off function by...

Page 117: ...he measured rms values This function cannot be enabled while recording power quality events The range shifts to the next higher range when the input exceeds 300 peak of the next lower range and shifts to the next lower range if the input falls below 100 peak of the next lower range However the display is fixed to the next higher range Sensor Detection If sensor detection is enabled from the SETUP ...

Page 118: ...ned on the first time after purchase Quick start guide Press START STOP to run the Quick start guide You can easily start recording by setting the items by following the instructions displayed on the screen Status LED The LED blinks red when the backlight is off and lights green when recording is in progress regardless of the backlight state The LED blinks green when the CW500 is standing by 7 1 O...

Page 119: ...ate on the CW500 is about 320 MB hour Transferring large data files over a USB connection may take a long time We recommend that you use an SD memory card to transfer large data files to a PC For information on how to handle SD memory cards refer to the user s manual provided with the card To prevent problems only save data files of the CW500 to the SD memory card Delete unnecessary files in advan...

Page 120: ...connected internally Do not simultaneously connect different ground levels to the L terminals Input Terminals Output Terminals Do not mistake input terminals for output terminals or vice versa Connectable signal wire sizes are as follows Suitable wire Single wire φ1 2 mm AWG16 Stranded wire 1 25 mm2 AWG16 strand diameter 0 18 mm or more Usable wire Single wire φ0 4 to 1 2 AWG26 to 16 Stranded wire...

Page 121: ...o fix the wire in place Signal wire Flathead screwdriver or the like Input Terminals Input terminals are used to monitor voltage output signals from temperature sensors or the like They are useful when you need to simultaneously measure a signal output from another device and the anomalies that occur on that power supply Number of channels 2 Input resistance Approx 225 6 kΩ 8 2 Signal Control with...

Page 122: ... priority among the specified events If you want the output to synchronize with a lower priority event turn off events that are higher priority than that event For details see Power Quality Event Threshold Settings in page 5 18 The events are arranged in order by priority below Highest priority Transient Interruption Dip Swell Inrush current 5V H L OUTPUT Output format Open collector output Maximu...

Page 123: ... that are not necessary for the measurement that you are taking Do not connect to the measurement line when the probe is not connected to the main unit Never remove the probe from the main unit connector while measuring power running from the measurement line Be sure to connect to the secondary side of the circuit breaker The current capacity is large on the primary side and is dangerous Connect t...

Page 124: ... to the VN and V1 terminals of the power supply adapter 5 Connect the voltage probe s alligator clip to the circuit under measurement 6 Turn on the power supply adapter s power switch 7 Turn on the CW500 power switch To remove the power supply adapter from the CW500 reverse the steps 1 to 7 above For details on how to operate the power supply adapter see the user s manual for the adapter 98031 Pow...

Page 125: ...pplication and USB driver in your PC according to the installation manual provided as a PDF file Interface The CW500 is equipped with a USB interface Transmission mode USB Ver 2 0 USB communication can be used to perform the following operations Download files in the CW500 internal memory to a PC Configure the CW500 from a PC Retrieve measured values in real time from the CW500 and display them an...

Page 126: ...istered trademarks or trademark of Microsoft Corporation in the United States and or other countries The latest software is available for download from the following webpage http www yokogawa com ymi 9 1 PC Software for Configuration and Analysis ...

Page 127: ...e AC power cord and remove all the batteries Load the batteries again connect the AC power and turn on the power If the CW500 still fails to turn on it may be malfunctioning Keys do not work Check that key lock is not activated Check the valid keys of each measurement range in this manual Measured values are not displayed Measured values are unstable or inaccurate Check that the frequency applied ...

Page 128: ...ory card operates on known hardware Downloading and configuration are not possible through USB communication Check that the CW500 is connected properly to the PC with a USB cord Use the communication application software CW500 Viewer to check that the connected device is displayed If it is not the USB driver may not be installed properly See the separate installation manual and reinstall the USB d...

Page 129: ...on check with the following procedure Connect the current clamp on probe that failed to a channel that detection was successful and test again If the same channel fails again the instrument may be malfunctioning If detection fails on the channel connected to the current clamp on probe that failed to be detected the last time the current clamp on probe may be malfunctioning If a malfunction is foun...

Page 130: ...For details see Reserving by Specifying the Date and Time or Reserving a Repetitive Recording section 4 2 Failed to start recording Check the settings on the Recording tab of SET UP For details see section 5 4 Recording Setup Start recording again If it still fails the SD memory card may be damaged if the recording destination is the card or the CW500 may be malfunctioning if the recording destina...

Page 131: ...nother SD memory card that has been formatted on the CW500 Then resume recording For details see Recorded Data Operation in section 5 6 Out of internal memory space Recording will be stopped Be sure to wait for the message Recording stopped to disappear and back up the saved files to a PC or SD memory card Delete the files or format the internal memory Then resume recording For details see Recorde...

Page 132: ...ws Probe 96030 96033 96036 Current Clamp setting of CW500 96063 96061 96060 Accuracy Band width 0 5 rdg 0 1mV 45Hz to 66Hz 0 8 rdg 0 2mV 66Hz to 1kHz 2 0 rdg 0 4mV 1kHz to 3 5kHz 0 5 rdg 0 1mV 45Hz to 66Hz 0 8 rdg 0 2mV 66Hz to 1kHz 1 0 rdg 0 3mV 1kHz to 3 5kHz 0 5 rdg 0 01mV 45Hz to 66Hz 0 8 rdg 0 02mV 66Hz to 1kHz 2 0 rdg 0 04mV 1kHz to 3 5kHz Phase 0 5 or less 45Hz to 3 5kHz 1 0 or less 45Hz to...

Page 133: ...3 2 Harmonic orders 6 24 Harmonics 3 8 5 26 Hysteresis 5 19 Symbol Page Σ CH 6 7 Numeric Page 4 split 8 split 6 6 A Page A Magnification 6 16 6 18 Auto power OFF 7 2 AVG 6 6 B Page Backlight 3 5 5 35 7 1 Barrier 2 4 Basic 5 1 Basic Setup 5 2 Bluetooth 5 34 Buzzer 5 34 C Page Changing the displayed channels 6 10 CH color 5 32 Clamp 5 8 Constant rec 5 29 Contrast 3 5 CT Ratio 5 9 Current measurement...

Page 134: ...gment 4 7 Nominal V 5 7 O Page Others 5 1 Output terminal 8 4 P Page Plt trend graph 6 33 Power 5 25 5 35 Power key 3 1 Power quality 3 9 5 18 Power Quality 6 25 Power supply adapter 8 5 Print screen 7 2 PRINT SCREEN 5 42 PRINT SCREEN key 3 1 Q Page QUALITY key 3 2 6 25 Quick start guide 4 1 4 3 R Page Read settings 5 46 REC End 5 29 Recording 5 1 5 25 Record items 5 27 REC Period 5 30 REC Start 5...

Page 135: ...5 30 t Magnification 6 18 Transfer data 5 39 Transient 5 19 Trend graph 6 4 V Page V A P ΣP 6 23 6 24 Vector 3 7 6 14 Vector key 3 2 V Magnification 6 16 6 18 Voltage measurement 5 5 V Range 5 5 VT CT 5 6 VT Ratio 5 5 W Page Waveform 3 7 6 17 Waveform key 3 2 Wh 6 4 6 9 Wiring check 4 7 Wiring system 4 5 5 3 W Wh 6 1 W Wh key 3 2 Z Page Zoom 6 4 Index ...

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YOKOGAWA CW500, User Manual

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