PEWA AMPROBE DM-4 Manual Download Page 34 | Manualshive

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9. STOPPING A RECORDING

The instrument uses a protective routine to avoid the risk of being disturbed or

interrupted during a recording or an energy measurement. Once a recording has

been started using automatic record mode, it won’t be sufficient to press the

RECORD key on the device to stop the recording. You need to use the Remote

User Interface (PDA) or the download suite to stop the recording.

9.1 Stop a Recording with the REMOTE USER INTERFACE (PDA)

To stop a recording with the Remote User Interface (PDA) , click on the MDL Main

Menu screen and then select STOP RECORDING.

9.2 Stop a Recording with the Download Suite

To stop a recording with the download suite, go to control panel screen window and

then click on stop recording.

33

DM-4 Power Quality Recorder

MDL-Main Menu

View Real Time Data
Setup a New Recording Session
Download Data
View Downloaded Data

Delete Session Device Status

Control

Optons

View Real Time Data
Setup a New Recording Session
Download Data
View Downloaded Data

Delete Session Device Status

Start Recording

Stop Recording

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Summary of Contents for AMPROBE DM-4

Page 1: ...DM 4 Power Quality Recorder ...

Page 2: ... 5 1 1 HOW TO SET THE DATE AND TIME 16 5 2 DEFAULT SETTINGS ANALYZER CONFIG 16 5 2 1 HOW TO SET THE TYPE OF ELECTRICAL SYSTEM UNDER TEST 17 5 3 BASIC SETTING RECORDER CONFIG 18 5 3 1 MDL PARAMETER SETUP 18 5 3 2 MDL VOLTAGE ANOMALIES 18 5 4 ADVANCED SETTING RECORDER CONFIGURATION 19 5 4 1 SETTING THE PARAMETERS INDIVIDUALLY 20 5 4 2 ADVANCED MDL PARAMETER SETUP 20 5 4 3 SET UP THE PARAMETERS FOR V...

Page 3: ...SUREMENT COSΘ 0 5C 0 5I 42 13 1 5 COSΘ MEASUREMENT 42 13 1 6 MEASUREMENT OF HARMONICS 43 13 1 7 TEMPERATURE DRIFT 43 13 1 8 SAFETY 43 13 1 9 GENERAL CHARACTERISTICS 44 13 2 ENVIRONMENT 44 13 2 1 OPERATING CONDITIONS 44 13 3 ACCESSORIES 45 13 3 1 STANDARD ACCESSORIES 45 14 APPENDIX 1 RECORDABLE PARAMETERS SYMBOLS 46 15 APPENDIX 2 THEORETICAL OUTLINES 47 15 1 VOLTAGE ANOMALIES VOLTAGE SAG AND SURGE ...

Page 4: ...exposed metal parts unused terminals circuits and so on Do not use the instrument if it seems to be malfunctioning Use only cables and accessories approved by Amprobe The following symbols are used in this manual m Caution keep to what is prescribed by the manual An incorrect use could damage the instrument or its components c High voltage risk of electric shock 1 2 PRELIMINARY INSTRUCTIONS This i...

Page 5: ...ation has been selected 1 3 DURING USE Please read carefully m When the instrument is connected to the circuit under test do not touch any unused terminal When measuring current other currents located near the leads may affect the measuring accuracy When measuring current always position the wire in the very middle of the jaws in order to obtain the highest accuracy 1 4 AFTER USE After use turn of...

Page 6: ...he DM 4 is able to Display in real time the electrical parameters of a single phase two phase or three phase system wye or delta and the harmonic analysis of voltages and currents Conduct a direct Energy measurement Record simultaneously pressing the RECORD key after a proper connection device configuration RMS values of voltages currents corresponding harmonics active reactive and apparent powers...

Page 7: ...In case of discrepancies please contact your dealer Should it be neces sary to return the instrument to the supplier please keep to the instructions given at paragraph 16 1 3 2 INSTRUMENT POWER SUPPLY The instrument can be powered by 8 batteries 1 5V AA located in the compartment on the back of the instrument An external power supply code DM 4EXTPS supplied with the instrument standard accessory m...

Page 8: ...ee environmental conditions listed in paragraph 13 2 4 HOW TO OPERATE 4 1 INSTRUMENT DESCRIPTION 4 2 KEYBOARD DESCRIPTION The following keys are available ON OFF turning on turning off Green LED for AC and Red LED for Battery RECORD to start stop manually a recording RESET to reset the unit 7 DM 4 Power Quality Recorder LEGEND 1 Voltage Inputs 2 Current Inputs 3 Infrared Ports 4 External Power Sup...

Page 9: ...Interface PDA to the DM 4 using the provided cable Turn ON the DM 4 by pressing on the ON OFF push button Turn ON the Remote User Interface PDA by pressing the power button Click on the MDL Modular Data Logger icon 8 DM 4 Power Quality Recorder Click MDL icon to enter the program ...

Page 10: ...t the fundamental frequency of the system Select the type of clamp you are using with the DM 4 to monitor the electrical system Click OK to accept the system setup 9 DM 4 Power Quality Recorder MDL Main Menu View Real Time Data Setup a New Recording Session Download Data View Downloaded Data Delete Session Device Status Download the recorded files View the downloaded files Delete recording or down...

Page 11: ... to Monitor Voltage Only Click on the Voltage button located at the bottom of the screen The voltage reading for the monitoring phase will be displayed with its respective frequency 10 DM 4 Power Quality Recorder MDL Main Menu View Real Time Data Setup a New Recording Session RTM Setup Phase Selection P 1 Ø 2 W Y Fund Frequency P 60 Hz Clamp Type P 1000 Amps OK Voltage Current V1 116 13V __ l1 3 9...

Page 12: ...with its respective frequency In order to display the current waveform or the harmonics for the monitored phase click on Scope or Harm buttons The waveform graph or the harmonics table for the monitored Current phase will be displayed 11 DM 4 Power Quality Recorder Real Time Voltage Harm 1 0 00 Harm 3 0 00 Harm 5 0 00 Harm 7 0 00 Back V1 Close Real Time Harmonics 1 0 00 3 0 00 5 0 00 7 0 00 Back Ø...

Page 13: ...reen should display the readings for all three phases as shown above You can access the readings for voltage current and power with their respective waveforms and harmonics tables as described on How to monitor voltage only How to monitor current only and How to monitor power only in paragraph 4 4 1 for the 1Ø2W system 12 DM 4 Power Quality Recorder Real Time Power P kW 0 00 0 00 0 00 0 00 Q kVAR ...

Page 14: ...up A New Recording Session The MDL system Setup menu will be displayed 13 DM 4 Power Quality Recorder Voltage Current V1 0 000V _ _ l1 0 00A V2 0 000V _ _ l2 0 00A V3 0 000V __ l3 0 00A _ ln 0 00A Back Voltage Current Power MDL Main Menu View Real Time Data Setup a New Recording Session RTM Setup Phase Selection P 3 Ø 4 W Y Fund Frequency P 60 Hz Clamp Type P 1000 Amps OK Click OK to accept the Sy...

Page 15: ...me Click on the drop down box of Set Time and select Choose date Select a date between the actual date of the year and 2031 NOTE You cannot choose a date in the past for example 2001 is not a valid date Repeat Step 2 to choose the time and click OK after a selection is made Once you click on the RECORD button the preset recording is stored in memory You can disconnect the Remote User Interface PDA...

Page 16: ... a New Recording Session Download Data View Downloaded Data Delete Session Device Status MDL Main Menu View Real Time Data Setup a New Recording Session Retrieve Settings Do you want to retreive current settings from the device Yes No MDL System Setup Phase Selection P 3 Ø 4 W Y Fund Frequency P 60 Hz Clamp Type P 1000 Amps Integration Period P 5 sec START P Set Time Cancel OK MDL System Setup Pha...

Page 17: ...ate and time in the device 5 2 DEFAULT SETTINGS ANALYZER CONFIG The basic setting allows you to quickly set the device for a recording session with all the 456 parameters selected 16 DM 4 Power Quality Recorder Connecting If you are using serial port make sure that the device is connecting using appropriate cable Wrong Settings The data logger s date and time are not in sync with the Palm Do you w...

Page 18: ... are using Three types of clamps are available 1000A For Standard clamps of 1000 Amps 3000A For Flexible clamps of 3000 Amps 100A For miniature clamps of 100 Amps Set the desired value by selecting the clamp type using the drop down box 17 DM 4 Power Quality Recorder MDL System Setup Phase Selection P 3 Ø 4 W Y Fund Frequency P 60 Hz Clamp Type Integration Period Comment Recording 1 START P Manual...

Page 19: ...hecked box The check mark indicates that the function block has been selected 5 3 2 MDL Voltage Anomalies This option allows you to setup the parameters for all the anomalies Sag Surge and Spike To select the voltage anomalies function block just click on the checked box A check mark indicates that the function block is enabled 18 DM 4 Power Quality Recorder MDL Voltage Anomolies Voltage Anomalies...

Page 20: ... should return to the main menu 19 DM 4 Power Quality Recorder MDL Main Menu View Real Time Data Setup a New Recording Session Download Data View Downloaded Data Delete Session Device Status MDL Main Menu View Real Time Data Setup a New Recording Session Download Data View Downloaded Data Delete Session Device Status MDL Main Menu MDL Main Menu View Real Time Data Setup a New Recording Session Dow...

Page 21: ...e Shift NA Waveform Next Back MDL Main Menu View Real Time Data Setup a New Recording Session Download Data View Downloaded Data Delete Session Device Status MDL System Setup Phase Selection P 3 Ø 4 W Y Fund Frequency P 60 Hz Clamp Type P 1000 Amps Integration Period P 5 sec Comment Recording 1 START P Manual STOP P Manual Next Back Y Y Y Y Y Y Y Y Y A A A MDL Parameter Setup Voltage Current Power...

Page 22: ...e Shift Waveform Next Back Y Y Y Y Y Y A A MDL Parameter Setup Voltage Current Power Variable Ø1 Ø2 Ø3 N Voltage Harmonics Frequency NA Phase Shift NA Waveform Next Back Y Y Y Y Y Y Y Y Y Y Y A A A A MDL Parameter Setup Voltage Current Power Variable Ø1 Ø2 Ø3 N Voltage Harmonics Frequency NA Phase Shift NA Waveform Next Back Y Y Y Y Y Y Y Y Y Y Y A A A A MDL Parameter Setup Voltage Current Power V...

Page 23: ...ne so refer to section 5 2 1 22 DM 4 Power Quality Recorder MDL Main Menu View Real Time Data Setup a New Recording Session Download Data View Downloaded Data Delete Session Device Status MDL System Setup Phase Selection P 3 Ø 4 W Y Fund Frequency P 60 Hz Clamp Type P 1000 Amps Integration Period P 5 sec Comment Recording 1 START P Manual STOP P Manual Next Back MDL Parameter Setup Voltage Current...

Page 24: ...e Current Power Variable Ø1 Ø2 Ø3 N Voltage NA Harmonics NA Frequency NA Phase Shift NA Waveform Next Back Y Y Y Y Y Y Y Y Y Y Y Y A A A Harmonics Phase 1 Harmonics Phase 2 Harmonics Phase 3 Recording Start Date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Harmonics Done Select All Clear All Recordin...

Page 25: ...een select the file you want to download and click on Download Once Downloading recording is complete you will be redirected back to the Remote Recordings screen If you don t have any more recording files to download click on the back button to return to the main menu 24 DM 4 Power Quality Recorder Remote Recordings Delete Download Back MDL Main Menu View Real Time Data Setup a New Recording Sessi...

Page 26: ...DM 4 Power Quality Recorder Saved Recordings Recordings Date Time 2760 1 1 70 12 46am 1111069687 3 17 05 2 28pm Back Recording Parameters Recording Information V Voltage RMS V Harmonics V Frequency V Phase Shift Voltage Anomalities Spikes Power P Q S PF dPF Energy Ep Eq Es Demand I Current RMS I Harmonics I Frequency I Phase Shift Next Back Recording Information Fund Freq 60 System 3 Int Period 5 ...

Page 27: ...tart date and time previously set INT PERIOD The value of this parameter determines how many sec onds the values of all the selected parameters will be stored Available choices 5sec 15sec 30sec 1min 5min 15min 30min 1hr 15min HARM REC Enable the instrument will record the values of the selected voltage and current harmonics corresponding to the voltages and currents selected in the corresponding p...

Page 28: ... to Phase for 3 wires three phase system Single phase 230V 3 wires 400V 4 wires 230V LIM LIM Only if ANOM REC flag has been set ON High and Low Voltage Percent threshold used in Voltage Anomalies detection Voltage Sag and Surge Example Three Phase System 4 wires Vref 120 LIM 10 LIM 10 High Lim 132V Low Lim 108 0V The Instrument will detect a voltage Anomalies if the RMS Voltage Values calculated e...

Page 29: ...ower total of phase 1 phase 2 phase 3 only for 3 wires measurement value of the power measured by the VA meters 1 2 and 3 2 respectively Single phase S1 3 wires St 4 wires St S1 S2 S3 Pft Pf1 Pf2 Pf3 Values of the power factors total of phase 1 phase 2 and phase 3 respectively Single phase Pf1 dPf1 3 wires Pft dPft 4 wires Pft Pf1 Pf2 Pf3dPft dPf1 dPf2 dPf3 dpft dpf1 dpf2 dpf3 Values of the cosΘ t...

Page 30: ...on period 5S Recording of harmonics ON Recording of Sag and Surge OFF Voltage Reference for Sag and Surge detection 480V Upper Limit for Sag and Surge detection 10 Lower Limit for Sag and Surge detection 10 Selected voltages V1 V2 V3 Selected voltage harmonics Selected currents I1 I2 I3 IN Selected current harmonics Powers Pf and cosΘ Θ selected Pt P1 P2 P3 Qt Q1 Q2 Q3 Qt Q1 Q2 Q3 St S1 S2 S3 Pft ...

Page 31: ...ording by pressing RECORD 7 STARTING A RECORDING You can start a recording manually or automatically Therefore after setting all the parameters and click on RECORD the instrument will start recording MANUALLY The recording will start when Instrument s time reaches the 00 sec onds value after pressing RECORD AUTOMATICALLY If the operator has clicked on RECORD the instrument will remain in stand by ...

Page 32: ...figuration which should fit most cases Using the RESET option See paragraph 5 6 By pressing RECORD the recording of the selected parameters is started according to the settings made in the MENU see paragraphs 5 2 and 5 3 As the default value of the integration periods is set at 5 seconds the instrument will store data in the temporary memory every 5 seconds Afterwards the instrument will explain t...

Page 33: ... able to download this file with the Remote User Interface PDA device We recommend that you use the Download Suite to open this file During a recording the following commands are disabled AUTOPOWER OFF function ON OFF key RESET key Click DEVICE STATUS on the main menu and the following screen will appear This page includes 1 Recording information 2 Device Date and Time 3 Battery condition 4 Memory...

Page 34: ...he REMOTE USER INTERFACE PDA To stop a recording with the Remote User Interface PDA click on the MDL Main Menu screen and then select STOP RECORDING 9 2 Stop a Recording with the Download Suite To stop a recording with the download suite go to control panel screen window and then click on stop recording 33 DM 4 Power Quality Recorder MDL Main Menu View Real Time Data Setup a New Recording Session ...

Page 35: ...te User Interface PDA ortheDownloadSuiteinordertohavepropercommunication Thedown load suite will always look for COM1 first if the setting is set to AUTOMATICALLY For download suite instructions please refer to software help file In order to transfer the recorded data from the instrument to the PC the following procedure must be followed 1 Switch ON the instrument 2 Connect the serial output of th...

Page 36: ... wires according to the connections shown in the above picture 35 DM 4 Power Quality Recorder CAUTION The maximum voltage between L1 and COM inputs is CATIII 635V phase phase and 370V phase earth Do not measure voltages exceeding the limits prescribed by this manual Should you exceed the voltage limits you could damage the instrument and or its components or endanger your safety CAUTION If possibl...

Page 37: ...the PC screen For further details see the Remote User Interface PDA settings 7 If you want to record simply press the RECORD push button on the device 11 2 USING THE INSTRUMENT IN A THREE PHASE 4 WIRE SYSTEM WYE m Instrument connection in a three phase 4 wire system 36 DM 4 Power Quality Recorder CAUTION The maximum voltage between L1 L2 L3 COM inputs is CAT III 635 V phase phase 370 V phase to ea...

Page 38: ...lower than 0 4 In case the Pf is lower than 0 4 check if the phase voltage is associated to the right clamp meter for example the voltage of phase 1 must be associated to the clamp meter no 1 4 Apply voltage to the electrical equipment under test if previously shut off for the instrument connection 5 The values of the available electrical parameters will be displayed 6 If you want to record a Chec...

Page 39: ...the limits prescribed by this manual Should you exceed the voltage limits you could damage the instrument and or its components or endanger your safety CAUTION Please note that in this case the yellow cable neutral is connected with the red cable on phase 2 You can use any phase you want as reference CAUTION If possible before connecting the instrument to the electrical equipment to be tested take...

Page 40: ... check if the phase voltage is associated to the right clamp meter for example the voltage of phase 1 must be associated to the clamp meter no 1 d After checking and if needed modifying the connection of the instrument to the equipment re set the 3 wires mode and the connections shown in the picture yellow and red wire together 4 Apply voltage to the electrical equipment under test if previously s...

Page 41: ...mps from the circuit under test 2 Turn the instrument off by pressing ON OFF push button 3 Remove the cables from the input terminals 4 Unscrew the screw of the battery cover and remove the cover 5 Replace the batteries with 8 new 1 5 V AA Alkaline LR6 is strongly recommended 6 Reposition the cover and fasten it with the proper screw 12 3 CLEANING Use a soft dry cloth to clean the instrument Do no...

Page 42: ...tral 310 635V 0 1V 600kΩ phase phase 13 1 2 Voltage Anomalies Detection Manual Selection of Range Voltage Range Accuracy Resolution Input Impedance 20 370V 3 2digit 0 1V 300kΩ phase neutral 310 635V 0 1V 600kΩ phase phase Time Accuracy ref to 60Hz Resolution 8 33ms 1 2 period of fundamental 8 33ms 1 2 period of fundamental 13 1 3 Current Measurement Using external transducer Range Accuracy Resolut...

Page 43: ...W 999 9MW 3 2digit Reactive Power 0 999 9VAR 1KVAR 999 9KVAR 1MVAR 999 9MVAR Apparent Power 0 999 9VA 1KVA 999 9KVA 1MVA 999 9MVA Active Energy 0 999 9Wh 1KWh 999 9KWh 1MWh 999 9MWh Reactive Energy 0 999 9VARh 1KVARh 999 9KVARh 1MVARh 999 9MVARh 13 1 5 CosΘ Θ Measurement CosΘ Resolution Accuracy expressed in degrees 0 20 0 01 3 0 50 4 0 80 5 ...

Page 44: ...igit 0 1V The voltage harmonics will be null under the following threshold DC if 1V or 2 of 1st harmonic 1st harmonic if 2V 2nd 51st if 1V or 2 1st harmonic Current Range Accuracy Resolution DC 25h 26h 33h 34h 51h 5 0 2digit 10 0 2digit 15 0 2digit 0 1A The voltage harmonics will be null under the following threshold DC if 2 of 1st harmonic or 0 2 of clamp full scale 1st harmonic if 0 2 of clamp f...

Page 45: ...mprobe power supply Adapter code DM4EXTPS Display LED Sampling Speed 83 33 usec at 60Hz No of Samples Per Period 128 Clamp Opening 2 15 53 mm Maximum Diameter of The Cable 2 00 50 mm 13 2 ENVIRONMENT 13 2 1 Operating conditions Reference Temperature 73 F 2 F 23 C 1 C Operating Temperature 32 F to 122 F 0 C to 50 C Relative Humidity 70 Storage Temperature 14 F to 140 F 10 C to 60 C Storage Humidity...

Page 46: ... PALM retailers visit www palm com Instrument DM 4 Carrying case HW1254A External power supply 12VDC DM 4EXTPS 1000A Clamp DM CT BKCE Test Leads Alligator Clips Set of 4 DVL 2 PDA DM 4 Interface Cable RS PDA RS 232 Computer Cable C232NG1 Remote User Interface Protective Case DM 4CASE RS 232 To USB Converter Cable RS USB 1 User Manual www amprobe com Download Suite www amprobe com Palm OS software ...

Page 47: ...power measured by the Wattmeter 1 2 and 3 2 respectively see paragraph 14 3 2 Qt Q1 Q2 Q3 Values of the total reactive power of phase 1 phase 2 phase 3 respectively Q12 Q32 Q13 only for 3 wires measurement Value of the power measured by the VARmeter 1 2 and 3 2 respectively see paragraph 14 3 2 St S1 S2 S3 Values of the total apparent power of phase 1 phase 2 phase 3 respectively S12 S32 S13 only ...

Page 48: ...0 100 452V Example2 Three Phase System 4 wires Vref 277V LIM 5 LIM 5 High Lim 277 x 1 5 100 290 85V Low Lim 277 x 1 5 100 263 15V The Instrument will detect Voltage Anomalies if the RMS Voltage Values calculat ed every 11ms beyond the above calculated thresholds These limits remain unchanged throughout the recording period When a Voltage Anomaly Occurs the Instrument Records The number correspondi...

Page 49: ... 60 Hz the second harmonic has a frequency of 120 Hz the third harmonic has a frequency of 180 Hz and so on Harmonic distortion is a constant problem and should not be confused with short events such as sags surges or fluctuations It can be noted that in 1 the index of the sigma is from 1 to the infinite What happens in reality is that a signal does not have an unlimited number of harmonics a numb...

Page 50: ...ss than or equal to the values stated in the following table The total harmonic distortion Thd of the supply voltage including all the harmonics up to 40th order must be less than or equal to 8 These limits theoretically applicable only for the supplier of electric energy provide however a series of reference values within which the harmonics introduced into the network by the users must be contai...

Page 51: ... other devices that presented linear loads The result was an essentially sinusoidal current in each phase and a low current on the neutral at a frequency of 50 60Hz Modern devices such as TV sets fluorescent lights video machines and microwave ovens normally draw current for only a fraction of each cycle thus causing non linear loads and subsequent non linear currents All this generates odd harmon...

Page 52: ...ine can be easily overloaded The 5 th and the 11 th harmonics contrast the current flow through the motors mak ing its operation harder and shortens their average life In general the higher the ordinal harmonic number the smaller its energy is and therefore the impact it will have on the devices except for transformers 15 3 POWER AND POWER FACTOR DEFINITIONS In a standard electric installation pow...

Page 53: ...hat these causes of the power losses are in phase between each other and therefore can be added one to the other mathematically The above given relation is justified by the relative simplicity of calculation of the same and by the relative dis crepancy between the values obtained using this relation and the true value It is to be noted moreover how in case of an electric installation with harmonic...

Page 54: ...t Inductive Generator Equipment under test Capacitive Load Equipment under test Capacitive Generator Equipment under test Inductive Load Where 53 DM 4 Power Quality Recorder 90 270 P Pf Q P Pf Q P Pf Q P Pf Q Symbol Significance Remarks P Value of the active power Positive parameter load Pf Capacitive power factor Pf Inductive power factor Q Value of the capacitive reactive power Q Value of the in...

Page 55: ...ive or negative is defined in the panel and therefore acquires the value of the active power in that moment Q The reactive power inductive or capacitive positive or negative is defined in the panel and therefore acquires the value of the reactive power in that moment Pf The power factor inductive or capacitive positive or negative is defined in the panel and therefore acquires the value of the pow...

Page 56: ...parameter intended as arithmetic average of all the values registered during the integration period Maximum value of the parameter during the integration period harmonics excluded Only this information repeated for each parameter to be memorized is saved in the memory along with starting time and date of the integration period Once these data are memorized the instrument restarts to take measureme...

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