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Extech Instruments PQ3350, User Manual

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Extech Instruments PQ3350 User Manual Download Page 10

 

PQ3350  V5.2  11/10 

10 

OPERATING INSTRUCTIONS 

 

NOTE: 

Pay special attention to the flexible current probe connecions.

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

1. 

Connect the flexible probe around the conductor. 

2. 

Make sure the current flowing direction is in consistent with the arrow marked on the probe 

coupling.    If the flexible current probe is connected in the right orientation, the correct phase 

will be displayed in the oscilloscope. 

3. 

Keep the probe coupling more than 25mm away from the conductor. 

 

WARNING: Always wear appropriate gloves in operation. 
 
 
 
 
 
NOTE:

 Select the correct CLAMP in the SETUP menu.    When the current probe is connected to the 

power analyzer, the power analyzer will automatically detect the range selected. 

NOTE:

 Select the correct frequency (Hz) in the SETUP menu. 

 
 
 

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Summary of Contents for PQ3350

Page 1: ...User Manual Power and Harmonics Analyzer Model PQ3350 www actoolsupply com www actoolsupply com ...

Page 2: ... exposed metal parts or unused terminals 4 Consider the use of rubber gloves in operation 5 Do not operate in excess of AC 500V Phase to Neutral or AC 600V Phase to Phase 6 Do not operate this instrument if it appears to be malfunctioning Do not use the flexible current probe before reading the following instructions 1 Do not install the flexible current probe around bare conductors carrying a vol...

Page 3: ...cPhaseDiagram 21 PhaseSequenceof a3 PhaseSystem 23 Balanced and Unbalanced 3 Phase 3P3W 3P4W Power Source System 23 Balanced and Unbalanced 3 Phase 3P3Wor 3P4W Load System 24 Transient Capture Dips Swells Outage 25 Down LoadTransientData 27 Datalogging Power Data 3P4W 3P3W 1P2W 1P3W 27 Down Load Power Data 27 Data Logging HarmonicsData 28 Down Load Harmonics Data 28 Clear Memory of Data 28 HardCOP...

Page 4: ...0 Harmonics in one Screen with Waveform Displayof Waveform with Peak Values 1024 Samples Period Analysis ofTotal Harmonic Distortion THD F Graphic Phase Diagram with 3 Phase System Parameters Capture 28Transient Events Time Cycles with ProgrammableThreshold DIP SWELL and OUTAGE are included in transient events 3 Phase Voltage or Current Unbalanced Ratio VUR IUR 3 Phase Voltage or Current Unbalance...

Page 5: ...PQ3350 V5 2 11 10 5 PANEL DESCRIPTION POWER V1 V2 V3 I1 I3 I2 1 2 3 4 5 6 7 8 9 10 11 12 www actoolsupply com www actoolsupply com ...

Page 6: ...displayed in LCD 7 Buttons 8 RS 232C Window 9 Stand Holder 10 Stand 11 Battery Cover 12 Battery Compartment Press this button to exit transient detection mode Also used to exit the SETUPmenu Press this button to perform transient detection Press this button to hold the data displayed in LCD press again to continue operation Press this button to begin the measurement of harmonics in magnitude Press...

Page 7: ...ayed in the LCD via the SEC indicator In the power mode press this button to displaythe phase In the harmonic analysis mode press this button to display phase angle instead of magnitude Press this button to turn the back light on Press it again to turn the back light off Press this button to begin measuring power Press this button to displaythe waveforms for voltage and current Press this button t...

Page 8: ...connector NOTE To choose the 100Acurrent probe press the SETUP button to select CLAMP When the CLAMPis reverse video press the or button to select 100 Current Probe 1000A 1 JawAssembly 2 Trigger 3 Range Selector 4 6 pin mini DIN connector NOTE To select the1000Acurrent probe press the SETUPbutton to select CLAMP When the CLAMPis reverse video press the or button to select 1000 HARMON POWER HARMON ...

Page 9: ...MPis reverse video press the or button to select 3000 NOTE To select the 1200Aflexible current probe press the SETUPbutton to select CLAMP When the CLAMPis reverse video press the or button to select 1200 WARNING All the current probes connected to the power analyzer must be of the same model and same range Mixed models and different ranges will yield incorrect measurement results 1 2 3 4 www acto...

Page 10: ...rrent probe is connected in the right orientation the correct phase will be displayed in the oscilloscope 3 Keep the probe coupling more than 25mm away from the conductor WARNING Always wear appropriate gloves in operation NOTE Select the correct CLAMPin the SETUPmenu When the current probe is connected to the power analyzer the power analyzer will automaticallydetect the range selected NOTE Selec...

Page 11: ...x 85 logging data 3 REC DATE shows the starting logging time of the 1 st downloaded file 4 Hz set up the frequency 50 60 or AUTO of the system 5 PT set up PT value 6 CT set up CT value 7 SEC set up the interval seconds of logged data 8 CLAMP set up the clamps selected 100A 1000A or 3000A 9 MD TIME set up the time of Maximum Demand 1 60 minutes 10 TRANS REF set up the transient voltage which will b...

Page 12: ...PQ3350 V5 2 11 10 12 www actoolsupply com www actoolsupply com ...

Page 13: ...tral of the system c Connect the test leads to L1 L2 and L3 of the 3P4W system d Connect the three current probes to the power analyzer input terminal I1 I2 and I3 e Clamp on to the L1 L2 and L3 of the 3P4W system Make sure the current flows from the front of the current probe to the back f All of the system parameters will be shown in the LCD For a description of each parameter refer to section X...

Page 14: ...to the voltage terminals L1 L2 and L3 of the system c Connect the three current probes to the power analyzer input terminal I1 I2 and I3 d Clamp on to the L1 L2 and L3 Make sure the current flows from the front of the current probe to the back e All parameters of the system will be shown in the LCD For a description of each parameter refer to XIV NOMENCLATURE www actoolsupply com www actoolsupply ...

Page 15: ...he voltage terminals L1 and VN Neutral of the system c Connect one current probe to the power analyzer input terminal I1 d Clamp on to the L1 Make sure the current flows from the front of the current probe to the back see arrow labeled on clamp probe e All of the parameters of the system will be shown in the LCD For a description of each parameter refer to XIV NOMENCLATURE www actoolsupply com www...

Page 16: ...nnect the test leads to the voltage terminals L1 L2 and VN Neutral of the system c Connect the two current probes to the power analyzer input terminal I1 and I2 d Clamp on to the L1 and L2 Make sure the current flows from the front of the current probe to the back e All of the system parameters will be shown in the LCD For a description of each parameter refer to XIV NOMENCLATURE www actoolsupply ...

Page 17: ...econdary voltage terminals L1 L2 L3 and the VN Neutral of the system c Clamp on to the secondary coils of L1 L2 and L3 Make sure the current flows from the front of the current probe to the back see the arrow label on the clamp probe d Press SETUP to enter the SETUP menu e Press SETUP several times until the CT symbol is highlighted f Press the or button to increment or decrement the RATIO specifi...

Page 18: ...e VT i All 35 system parameters will be shown in the LCD For a description of each parameter refer to XIV NOMENCLATURE HarmonicAnalysis of Voltage or Current Normal Voltage without Distortion and Harmonics Distorted Current with Harmonics a Setup the analyzer for measurement of any power system 3P4W 3P3W 1P2W or 1P3W To view www actoolsupply com www actoolsupply com ...

Page 19: ... th order or press the button to pass the 1 st order NOTE If the waveform is clipped at the peak or too small in the LCD press the RANGE button to select HIGH or LOW range for a better display The range indicator is the symbol after the unit of RMS value Lor H Display the PhaseAngle of Harmonics When the HARMO button is pressed the magnitude of each harmonic is displayed To review the phase angle ...

Page 20: ... and 527 4W The time interval for maximum demand is 2 minutes Waveform of Voltage and Current Press this button to displaythe waveforms for voltage and current simultaneously Press this to select different inputs V1 I1 V2 I2 or V3 I3 NOTE The triggering point is the zero crossing point of V1 for V2 V3 I2 and I3 The triggering point for I1 is its own zero crossing point in case V1 is not present NO...

Page 21: ...Press this button to select V1 V2 or V3 NOTE The triggering point is the zero crossing point of V1 for V2 and V3 NOTE In the waveform mode one period cycle of 1024 data points is displayed Graphic Phase Diagram Press this button to displaythe phase diagram The voltage and current signals are displayed in phase format magnitude angle www actoolsupply com www actoolsupply com ...

Page 22: ...re d02 d02 represents the Zero and Negative Sequence Unbalanced Ratios for voltage REF nominal voltage for transient detection reference Sd threshold in for transient detection with respect to nominal voltage REF NOTE The phase is drawn only when the reading exceeds 200 counts If V is zero the phase of the current will not be drawn Press this button to change the displayfrom VUR to IUR dA Historic...

Page 23: ...zer will show L1 3 2 in the right top corner and it will beep to warn of an incorrect phase sequence Balanced and Unbalanced 3 Phase 3P3W 3P4W Power Source System In order to check if a system is balanced press this button to displaythe phase diagram along with the VUR Balanced System If a 3 phase power source system is balanced the parameters should be as follows V1 V2 V3 V12 V23 V31 The phase an...

Page 24: ...m is balanced press the button twice to displaythe phase diagram with the IUR displayed Balanced System If a 3 phase load system is balanced the parameters should be as follows I1 I2 I3 The phase angle for I2 and I1 I2 I1 120 The phase angles of I3 and I2 I3 I2 120 In current of neutral 0A IUR 0 d0 0 d2 0 Unbalanced Systems If the values differ from the numbers above an unbalanced load system may ...

Page 25: ...s shown in the LCD 3 Press the or button to increment or decrement the nominal voltage for a reference To exit press the EXIT button 4 Press the SETUP button several times until SDVP is shown in the right bottom corner of the LCD 5 Press the or button to increment or decrement the threshold in SDVP To exit press the www actoolsupply com www actoolsupply com ...

Page 26: ...ial number of events Second column Elapsed time the elapsed time format is DAYS HOURS MINUTES 99 days 24 hours 60 minutes max The third column Number of cycles The fourth column Code of transient events There can be more than one transient condition occurring in one event NOTE In the TRANSIENT CAPTURE mode the analyzer takes 128 samples of each cycle for each phase continuously NOTE When the user ...

Page 27: ...ystem 3P4W 3P3W 1P3W or 1P2W 4 Press the REC button to start logging A REC symbol will display 5 To stop logging press the REC button again NOTE To download data send a CTRL D command to the analyzer through RS 232C interface WARNING The sampling time could be longer than the set value if there is no input at V1 Down Load Power Data 1 Press the SETUP button 2 Down Load File will be shown in revers...

Page 28: ...ad Harmonics Data 1 Press the SETUP button 2 Down Load File will be shown in reverse video 3 Press the or button to select the file number 4 If the data stored in a selected file is harmonics data a leading symbol H will precede the file name 5 Press the EXIT button 6 When the unit receives a CTRL D command through the RS 232C port it will down load previously saved harmonic data NOTE In the setup...

Page 29: ...s a fewseconds to hardcopy the screen and store the screen in an internal file The LCD will showREC in reverse video when in operation The number following REC is the file number 3 Users can store up to 85 screens if no power or harmonics data is stored www actoolsupply com www actoolsupply com ...

Page 30: ... the screen a leading symbol of H is displayed in reverse video 2 Press the or to select the saved screen 3 Press the HOLD READ button to restore the saved screen NOTE If the data saved in a specific file is a HARDCOPYof a screen a leading symbol of H is displayed in reverse video NOTE Hardcopy data can not be downloaded www actoolsupply com www actoolsupply com ...

Page 31: ... 1 Holding the or button will speed up the process of incrementing or decrementing To exit press the EXIT button The CT ratio range is 1 to 600 The VT ratio range is 1 to 3000 Once the CT or VT PT is set the voltage and current readings are as follows CURRENT displayed CURRENT measured x CT Ratio VOLTAGE displayed VOLTAGE measured x VT Ratio www actoolsupply com www actoolsupply com ...

Page 32: ... value by 1 Holding the or button will speed up the process of incrementing or decrementing To exit press the EXIT button The MD max demand time interval range is 1 to 60 minutes Once the time interval is set the unit will calculate the maximum demand and average demand in watts W or VA To toggle between W and VA press the POWER button www actoolsupply com www actoolsupply com ...

Page 33: ...P button several times until SEC is displayed in reverse video Press the or button to increment or decrement the value by 2 Holding the or button will speed up the process of incrementing or decrementing To exit press the EXIT button www actoolsupply com www actoolsupply com ...

Page 34: ...o select Year Month Date Hour and Minute 2 Press the or to increment or decrement the number Note The seconds field cannot be adjusted PROTOCOL RS 232C INTERFACE RS 232C Interface Baud Rate 19200 Data bits 8 Stop bit 1 No Parity www actoolsupply com www actoolsupply com ...

Page 35: ... 01 KW 1 80W 100 0 999 9 KW 0 1 KW 1 0 8KW 1000 9999 KW 1 KW 1 8KW 0 000 9 999MW 0 001MW 1 80KW 50 or 60 Hz PF 0 5 to 1 CT 1 Voltage AC 5V Current AC 5A for A range and continuous waveform Conductor is located at the center of flexible loop Position sensitivity is 2 of range External field effect of 40A m and 200mm from the coupling is 1 of range Temperature coefficient is 0 02 of reading C Model ...

Page 36: ... 0 01 A 0 5 0 05A 4 100 A 0 1 A 1 0 0 5A Model PQ3350 PQ3120 Overload Protection AC 2000A Range Resolution Accuracy of Readings 5 10 00A 0 001A 0 01A 4A 100 0A 0 01A 0 1A 0 5 0 5A 40A 1000 0 A 0 1A 1 A 0 5 5A Model PQ3350 PQ3220 Overload Protection AC 3000A Range Resolution Accuracy of Readings 6 0 300 0A 0 1A 1 of range 300 0 3000A 0 1A 1A 1 of range Model PQ3350 PQ3210 Overload Protection AC 120...

Page 37: ...age display is 0 Range Resolution Accuracy 1 20 th 2 21 49 th 4 of reading 2 0 50 99 th 0 1 6 of reading 2 0 Harmonics of AC Voltage in Magnitude 1 to 99 th order minimum voltage at the 50 or 60 Hz AC 80V VT 1 Range Resolution Accuracy 1 20 th 2 0 5V 21 49 th 4 of reading 0 5V 50 99 th 0 1V 6 of reading 0 5V Harmonics of AC Current in Percentage 1 to 99 th order Min current at 50 or 60 Hz is model...

Page 38: ...5 of reading 7dgts 21 50 th mA range 10 of reading 7dgts 51 99 th 0 1mA 0 1A 35 of reading 7dgts Model PQ3350 PQ3120 Range Resolution Accuracy 1 20 th 2 of reading 0 4A 21 49 th 4 of reading 0 4A 50 99 th 0 1A 6 of reading 0 4A 1 to 99 th order min current at the 50 or 60 Hz True RMS 300A Model PQ3350 PQ3220 PQ3210 Range 0 300A Resolution Accuracy 1 20 th 0 1 2 of reading 4A 21 st 50 th 0 1 4 of r...

Page 39: ...ange Resolution Accuracy 180 to 180 0 1 2 0 to 360 0 1 2 Peak Value of ACV peak value 20V or ACA peak value model PQ3350 PQ3110 10 of the range model PQ3350 PQ3120 20A model PQ3350 PQ3220 PQ3210 30A VT 1 Range Sampling Time Accuracy of Reading 50 Hz 19μs 5 30 digits 60 Hz 16μs 5 30 digits Crest Factor C F of ACV peak value 20V or ACA peak value model PQ3350 PQ3110 10 of the range model PQ3350 PQ31...

Page 40: ...l PQ3350 PQ3110 10 of the range model PQ3350 PQ3120 20A model PQ3350 PQ3220 PQ3210 30A Calculation is done over 1 to 50 th Harmonics If the voltage or current is 0 at 50 or 60 Hz all the percentage display is 0 Model PQ3350 PQ3110 Range Resolution Accuracy 0 0 20 0 1 20 0 100 3 of reading 5 100 999 9 0 1 10 of reading 10 Model PQ3350 PQ3120 Range Resolution Accuracy 0 0 20 2 20 100 6 of reading 1 ...

Page 41: ...6210 records 1P3W 52420 records 1P2W 4096 records 50 Harmonics record Sampling Time 2 to 3000 seconds for data logging Low battery Indication Overload Indication OL Operating Temperature 10 C to 50 C Operating Humidity less than 85 relative Storage Temperature 20 C to 60 C Storage Humidity less than 75 relative Dimension 257 L x 155 W x 57 H mm 10 1 L x 6 1 W x 2 3 H Weight 1160g Batteries include...

Page 42: ...4 to 122 F 10 C to 50 C Operating Humidity 85 relative humidity Altitude 2000 meters Storage Temperature 4 to 140 F 20 C to 60 C Storage Humidity 75 relative PQ3110 100A Current Probe Conductor Size 1 2 30mm approx Range Selection Manual 1A 10A 100A Dimensions 210mm L x 62mm W x 36mm H 8 3 L x 2 5 W x 1 4 H Weight 7 oz 200g Operating Temperature 14 to 122 F 10 C to 50 C Operating Humidity 85 relat...

Page 43: ...tude 2000 meters Storage Temperature 4 to 140 F 20 C to 60 C Storage Humidity 85 relative Model PQ3210 1200A Flexible Current Probe Probe Length 18 460mm Range Selection Manual 120A 1200A Minimum Bending Diameter 1 37 35mm Connector Diameter 0 9 23mm Cable Diameter 0 55 14mm Cable Length 67 1700mm probe to box 67 1700mm box to output Dimensions box 5 1 L x 3 1 W x 1 7 H 130mm L x 80mm W x 43mm H W...

Page 44: ...ift and remove the battery cover 4 Remove the old batteries 5 Insert eight 8 new 1 5V AA batteries 6 Replace the battery cover and secure the screw MAINTENANCE CLEANING Service not covered in this manual should only be performed by qualified personnel Repairs should only be performed by qualified personnel Periodically wipe the case with a damp cloth and detergent do not use abrasives or solvents ...

Page 45: ...1 PF2 PF3 Power Factor of Each Phase PFH Long Term Average Power Factor WH SH Φ1 Φ2 Φ3 Phase Angle of Each Phase WH Watt Hours SH VA hours QH VAR hours HZ Selected Frequency 50 60 or Auto MD Maximum Demand in W and VA over Specified Interval 3P4W 3 Phase 4 Wire System 3P3W 3 Phase 3 Wire System 1P2W Single Phase 2 Wire System 1P3W Single Phase 3 Wire System SEC sampling interval 0 to 3000 seconds ...

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