User Manual Power and Harmonics Analyzer Model PQ3350
EN 61010-2-032 CAT III 600V Pollution Degree 2 Definition of Symbols: Caution: Refer to Accompanying Documents Caution: Risk of Electric Shock Double Insulation Over-voltage category III (CAT III): equipment in fixed installations. WARNING: If the power analyzer is used in a manner not specified by the manufacturer, the protection provided by the clamp meter may be impaired. Please read the following instructions before use 1. Do not operate this instrument in wet or dusty environments. 2.
Table of Contents Preparation for use ..................................................................................................... 11 Power Quality of a 3 Phase 4 Wire (3P4W) System ................................................12 Power Quality of a 3 Phase 3 Wire (3P3W) System ................................................13 Power Quality of a Single Phase (1P2W) System....................................................14 Power Quality of a 1 Phase 3 Wire (1P3W) System .......................
FEATURES ■ Analysis for 3P4W, 3P3W, 1P2W, 1P3W ■ True RMS value (V123 and I123) ■ Active Power (W, KW, MW, GW) ■ Apparent and Reactive Power (KVA, KVAR) ■ Power Factor (PF), Phase Angle (Φ) ■ Energy (WH, KWH, KVARH, PFH) ■ Current measurement from 0.
PANEL DESCRIPTION 1 2 V2 V1 POWER I1 V3 I3 I2 4 3 5 6 7 8 9 12 10 5 11 PQ3350 V5.
Panel Description 1. Input Terminal for Neutral Line (Voltage) 2. Voltage Input Terminals for Each Phase (V1, V2, V3) 3. External DC Input (The AC adaptor must be 600V isolated) 4. Current Input Terminals for Each Phase (I1, I2, I3) 5. LCD Display 6. Indication of locations where SEC., CT, VT, and SETUP are 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.
Press this button for the voltage or current input range Press to enter the Main Menu (also used to navigate menu items). Press this button to increment value by one. Hold the button for two seconds or more to speed up the increment. Press this button to decrement value by one. In harmonic analysis mode, use these buttons to move the cursor left or right. Press this button to start data logging. Press it again to stop data logging. The sampling interval is displayed in the LCD via the SEC indicator.
Current Probe (100A) WARNING: All the current probes connected to the power analyzer must be of the same model and same range. Mixed models and different ranges selected will cause incorrect result of measurement. 1. Jaw Assembly 2. Trigger 3. Range Selector 4. 6 pin mini DIN connector 100A 100A (HARMON) 100A (POWER) 60A 10A (HARMON) 10A 1A 1A NOTE: To choose the 100A current probe, press the SETUP button to select CLAMP. When the CLAMP is reverse video, press the ▲ or ▼ button to select 100.
Flexible Current Probe (3000A or 1200A) 1. Control Box 2. Output Range Select Switch 3. Flexible Loop 4. Coupling Assembly 1 2 3 4 NOTE: To select the 3000A flexible current probe, press the SETUP button to select CLAMP. When the CLAMP is reverse video, press the ▲ or ▼ button to select 3000. NOTE: To select the 1200A flexible current probe, press the SETUP button to select CLAMP. When the CLAMP is reverse video, press the ▲ or ▼ button to select 1200.
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.
Preparation for use 1 2 3 4 5 6 7 8 9 10 11 12 a. 13 14 15 16 17 Press SETUP button to enter setup screen. Press SETUP again to select the item for setting (the selected item will be displayed in reverse video). After selecting the item, press ▲ or ▼ buttons to set up its value. b. After finishing setting up, press EXIT button to leave setup mode. 1.
Power Quality of a 3 Phase 4 Wire (3P4W) System a. Turn the power on. Press the POWER and the 1Φ3Φ buttons to select the 3P4W system. The type of system will be displayed at the left bottom corner in the LCD. b. Connect the four test leads to the voltage terminals V1, V2, V3 and the VN (Neutral) 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.
Power Quality of a 3 Phase 3 Wire (3P3W) System a. Turn the power on. Press the POWER and the 1Φ3Φ buttons to select the 3P3W system. The type of system will be displayed at the bottom right of the LCD. b. Connect the four test leads 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 e.
Power Quality of a Single Phase (1P2W) System a. Press POWER and then 1Φ3Φ to select the 1P2W system. The type of system will be b. Connect the test leads to the voltage terminals L1 and VN (Neutral) of the system. displayed at the bottom right of the LCD 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.
Power Quality of a 1 Phase 3 Wire (1P3W) System a. Turn the power on. Press the POWER and the 1Φ3Φ buttons to select the 1P3W system. The type of system will be displayed at the bottom right of the LCD. b. Connect 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 e.
Measurement of a System with CT or VT (PT) a. Turn the power on. Press the POWER and the 1Φ3Φ buttons to select the 3P4W system. The type of system will be displayed at the bottom right of the LCD. b. Connect the four test leads to the secondary 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.
g. Press the SETUP button several times until the VT symbol is highlighted. h. Press the ▲ or ▼button to increment or decrement the RATIO specified by the VT. i. All 35 system parameters will be shown in the LCD For a description of each parameter, refer to XIV. NOMENCLATURE. Harmonic Analysis 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).
the harmonic analysis of voltage or current, press the HARMO button. b. Once the HARMO button is pressed, the waveform will be shown in the left-hand portion of the LCD, st th and the 1 to 50 order harmonics will be shown in the right-hand portion of the LCD. c. The positive and negative peak values will be shown in the waveform (Vpk). d. The true RMS value & total harmonic distortion of voltage or current is shown under the waveform. e. The cursor (↑arrow) will point to the current order of harmonics.
Measurement of Maximum Demand 1. Set the time interval for maximum demand (refer to section V) 2. The analyzer will integrate the KW and KVA over the specified interval. 3. The maximum demand (MD) updates if new demand is greater than the previous value. In the following example, the maximum demand is 527.4VA and 527.4W. The time interval for maximum demand is 2 minutes. Waveform of Voltage and Current Press this button to display the waveforms for voltage and current simultaneously.
Waveform for Voltage Only Press this button to display the voltage waveform only. The true RMS value of voltage will be displayed at the bottom of the LCD. 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 display the phase diagram. The voltage and current signals are displayed in phase format (magnitude, angle).
V1 is the reference. The V1 angle is always 0 degrees. The phase angles of V2, V3, I1, I2, and I3 are displayed with respect to V1. V1, V2, V3, I1, I2, I3, V12, V23, and V31 are displayed in vector form graphically. V1, V2, V3: Phase voltages in phase format with respect to V1 I1, I2, I3: Line currents in phase format with respect to V1. IVn: Calculated voltage and current of the neutral with respect to ground. V12, V23, V31: Line voltage in phase format with respect to V1.
NOTE: If the voltage of L1, L2, and L3 is not connected in the correct sequence, the analyzer will show L1-3-2 in the right top corner, and it will beep to warn of an incorrect phase sequence. Phase Sequence of a 3 Phase System Press this button to display the phase diagram. In this mode, the analyzer also detects the phase sequence.
Vn (voltage of neutral with respect to ground) = 0V VUR = 0% d0% = 0% d2% = 0% Unbalanced Systems If the values differ from the numbers above, an unbalanced power source system may be the reason. The magnitude of the differences can be used as an indication of an unbalanced power source system. The larger the difference, the further unbalanced the system will be.
Transient Capture (Dips, Swells, Outage) 1. Press to enter the PHASE DIAGRAM mode. 2. Press the SETUP button until TRANS REF in reverse video is 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 24 PQ3350 V5.
EXIT button. 6. Press the TRANSIENT button to start the “Transient Capture” 7. The backlight will switch off when the TRANSIENT button is pressed. 8. If the analyzer captures any transient events (DIP, SWELL, or OUTAGE), the backlight will switch on. Press the TRANSIENT button to review the recorded TRANSIENT events. 9. To exit TRANSIENT CAPTURE, press the EXIT TRANSIENT button.
allow entrance to the TRANSIENT capture mode (an audible beep will sound). Down Load Transient Data When the TRANSIENT button is pressed to display CAPTURED EVENTS, the data is also output through the RS-232 interface simultaneously.
Data Logging Harmonics Data 1. Set the sampling time (rate) for data logging 2. Press the HARMO button to enter the harmonics measurement mode. 3. Press the VI button to select the desired input (V1, I1, V2, I2, V3, or I3). 4. Press the REC button to start data logging. A REC symbol will be displayed at the bottom of the LCD. 5. To stop data logging, press the REC button again. WARNING: If there is no input at V1, the sampling rate could be longer than the programmed value. Down Load Harmonics Data 1.
HardCOPY of SCREEN 1. Press the HOLD button. 2. Press the REC button. It takes a few seconds to hardcopy the screen, and store the screen in an internal file. The LCD will show REC 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). 28 PQ3350 V5.
READ the SAVED SCREEN 1. Press the SETUP button. ‘DOWN LOAD FILE’ is displayed in reverse video. If the data in the selected file is a hardcopy of 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 HARDCOPY of a screen, a leading symbol of H is displayed in reverse video. NOTE: Hardcopy data can not be downloaded. 29 PQ3350 V5.
SET THE CT AND VT (PT) RATIO Press the SETUP button several times until CT or VT is shown in reverse video. Press the ▲ or ▼ button to increment or decrement the value by 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.
SET THE TIME INTERVAL FOR MAXIMUM DEMAND Press the SETUP button until MD TIME is displayed in reverse video. Press the ▲ or ▼ button to increment or decrement the 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.
SET THE SAMPLING TIME FOR DATA LOGGING Press the SETUP 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. 32 PQ3350 V5.
SET THE CALENDER CLOCK 1. Press the SETUP button to 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 33 PQ3350 V5.
SPECIFICATIONS (23°C± 5°C) AC Watt (50 or 60 Hz, PF 0.5 to 1, CT = 1, Voltage＞AC 20V, Current＞AC 40mA for 1A range, Current＞AC 0.4A for 10A range, Current＞AC 4A for 100A range, and continuous waveform) Model PQ3350 + PQ3110 (100A) 1 Range (0 to 100A) Resolution Accuracy of Readings 5.0 – 999.9 W 0.1W ±1% ± 0.8W 1.000 – 9.999 KW 0.001 KW ±1% ± 8W 10.00 – 99.99 KW 0.01 KW ±1% ± 80W 100.0 – 999.9 KW 0.1 KW ±1% ± 0.8KW 1000 – 9999 KW 1 KW ±1% ± 8KW (50 or 60 Hz, PF 0.
For example, ±0.8W becomes ± 0.8W * CT ratio Range of CT (Current Transformer) Ratio: 1 to 600 AC Apparent Power (VA, from 0.000VA to 9999 KVA): VA = V r.m.s. x A r.m.s AC Reactive Power (VAR, from 0.000 VAR to 9999 KVAR): 2 2 VAR = √(VA – W ) AC Active Energy (mWH, WH, or KWH, from 0 mWH to 999,999 KWH) WH = W * Time (in hours) AC Current (50 or 60 Hz, Auto Range, True RMS, Crest Factor < 4, CT=1) Model PQ3350+PQ3110 (Overload Protection AC 200A) 4 Range Resolution Accuracy of Readings 0.04 – 1 A 0.
AC Voltage (50 or 60 Hz, Auto Range, True RMS, Crest Factor < 4, Input Impedance 10 MΩ, VT (PT) = 1, Overload Protection AC 800V) 7 Range Resolution Accuracy of Readings 20.0 V – 500.0 V (Phase to Neutral) 0.1 V ±0.5% ± 5dgts 20.0 V – 600.0 V (Phase to Phase) ±0.5% ± 5dgts 7 For VT (PT) ≠1, the accuracy in percentage is the same (±0.5%). But the additional digits should be multiplied by the VT ratio.
Model PQ3350+PQ3120 Range Resolution th 1 – 20 th 0.1 % 21 – 49 th 50 – 99 Model PQ3350 + PQ3220/PQ3210 Range Resolution th 1 – 20 0.1% st th 21 – 50 0.1% st th 51 – 99 0.1% Accuracy ±2% ±4% of reading ± 2.0% ±6% of reading ± 2.0% Accuracy ±2% ±6% ±10% Harmonics of AC Current in Magnitude th (1 to 99 order. Min. current at the 50 or 60 Hz: model PQ3350+PQ3110 > 10% of the range; model PQ3350+PQ3120 > 20A. CT=1) Model PQ3350+PQ3110 Range Resolution Accuracy th 1 – 10 ±0.
Power Factor (PF) Model PQ3350+PQ3110 or PQ3350+PQ3120 Range Resolution 0.00 – 1.00 0.01 Model PQ3350+PQ3220/PQ3210 Range Resolution 0.000 – 1.000 0.001 Accuracy ± 0.04 Accuracy > 20V and > 30A < 20V or < 30A ± 0.04 ±0.1 Phase Angle (Φ) Model PQ3350+PQ3110 or PQ3350+PQ3120 Range Resolution -180° to 180° 0.1° Model PQ3350+PQ3220/PQ3210 (Φ, V > 20V, A > 30A) Range Resolution -180° to 180° 0.1° 0° to 360° 0.
in AUTO mode Model PQ3350+PQ3110 or PQ3350+PQ3120 Range Resolution 45 – 65 Hz 0.1Hz Accuracy of Reading 0.1Hz Frequency of ACV (RMS value > 10V) or ACA (RMS value > 30A) Model PQ3350+PQ3220/PQ3210 Range Resolution 45 – 65 Hz 0.1 Hz Accuracy ± 0.2Hz Total Harmonic Distortion (THD-F with respect to the fundamental frequency, min. value at 50 or 60 Hz is voltage > AC 80V and current is: model PQ3350+PQ3110> 10% of the range; model PQ3350+PQ3120> 20A; model PQ3350+PQ3220/PQ3210> 30A.
GENERAL SPECIFICATIONS PQ3350 Analyzer Indoors Use Battery Type: External DC Input: Display: LCD Update Rate: Power Consumption: No. Of Samples: Data Logging Files: Max. File Capacity: Sampling Time: Low battery Indication: 1.5V SUM-3 x 8 Use only power supply adapter Model PHAPSA Dot Matrix LCD (240x128) with backlight 1 time / second 140mA (approx.
Users manual x 1 Batteries 1.5V x 8 Software CD x 1 Software users manual x 1 USB to RS232 cable x 1 Model PQ3120 1000A Current Probe Conductor Size: 2.2” (55mm), 2.5” x 1.0” (64 x 24mm) bus bar Range Selection: Manual (10A, 100A, 1000A) Dimensions: 244mm (L) x 97mm (W) x 46mm (H) 9.6" (L) x 3.8" (W) x 1.8" (H) Weight: 1.3 lbs.
Model PQ3220 3000A Flexible Current Probe Probe Length: 24” (610mm) Range Selection: Manual (300A, 3000A) Minimum Bending Diameter 1.37” (35mm) Connector Diameter 0.9” (23mm) Cable Diameter 0.55” (14mm) Cable Length 67”/1700mm (probe to box) 67”/170mm (box to output) Dimensions (box): 5.1” (L) x 3.1” (W) x 1.7” (H) 130mm (L) x 80mm (W) x 43mm (H) Weight: 14.4 oz.
BATTERY REPLACEMENT When the low battery symbol is displayed on the LCD, replace the batteries. 1. Turn power off and remove all of the test leads and current probes from the unit. 2. Remove the screw on the battery cover. 3. Lift 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.
NOMENCLATURE V12, V23, V31: Line Voltage V1, V2, V3: Phase Voltage I1, I2, I3: Line Current P1, P2, P3: True Power (W) of Each Phase S1, S2, S3: Apparent (VA) Power of Each Phase Q1, Q2, Q3: Reactive Power (VAR) of Each Phase PΣ: Total System Power (W) SΣ: Total System Apparent Power (VA) QΣ: Total Reactive Power (VAR) PFΣ: Total System Power Factor (PF) PF1, 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 Q
Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information.
