USER GUIDE Single or 3-Phase True RMS 1000A Power Clamp Meter with Non-Contact Voltage Detector and PC interface Model PQ2071
Introduction Congratulations on your purchase of the Extech PQ2071 1/3-Phase CAT IV True RMS 1000A Power Clamp Meter. The PQ2071 measures AC Current, Frequency, Temperature (Type K), and Power (True Power, Apparent Power, Reactive Power, and Active Power). The PQ2071 also includes a built-in non-contact Voltage Detector with LED alert. The USB PC interface offers storage and recall (manually) of up to 99 sets of readings data. Proper use and care of this meter will provide many years of reliable service.
General Safety Information This Meter complies with the IEC61010 standard for pollution degree 2, overvoltage category (CAT III 1000V, CAT IV 600V), and double insulation. Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired. In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment under test. A Note identifies general safety information that the user must observe.
Description Meter Description (front) 1 Transformer Jaw 2 Jaw Open Trigger 3 LCD Display 4 Voltage detector sensor 5 Voltage detector alarm light 6 Function dial switch (HOLD button) 7 Push-buttons (see list below) 8 L1, L2, L3 Input Terminal 9 PC Interface cable jack Note: Battery compartment located on back of instrument Figure 1 4 PQ2071-en-GB_V1.
Display icons Description USB PC Interface L1 Phase 1 L2 Phase 2 L3 Phase 3 h Hours m Minutes S Seconds PF Power Factor KVA Active power KWh Kilowatt hours Hz Frequency(Hertz) PG Phase angle KVAr ΣW Figure 2 Reactive power Sum of Wattage measurements Low Battery MAX-MIN Maximum and Minimum readings Analog Bar Graph CLR ̶ Clear Data Negative symbol High voltage symbol AC AC voltage or current RCL Recall stored data MEM Data storage FULL Data logger is full HOLD Data h
Push-button Description Figure 3 L1-L2-L3 Press L1-L2-L3 to step through the first phase, second phase, third phase, and the sum of the watt measurements. Press and hold L1-L2-L3 for at least two (2) seconds to enter 3P3W mode. MR Press once to enter the Memory Recall mode, the MR icon will appear and the meter will beep. Use the arrow buttons as described directly below to step through the 99reading internal memory.
Operation NOTES: Read and understand all Warning and Caution statements in this operation manual prior to using this meter. Set the function switch to the OFF position when the meter is not in use. Non-Contact Voltage Detector WARNING: Risk of electrocution. Before use, always test the voltage detector on a known live circuit to verify proper operation. 1. Rotate the function switch to any measurement position. 2. Place the detector probe tip on the conductor or voltage source to be tested. 3.
AC Voltage Measurements AC voltage on Main Display (Frequency on Secondary Display) The AC Voltage ranges are: 100V, 400V and 750V The frequency range is: 50Hz~60Hz 1 Single phase - connect the L1 test lead to the power wire and connect the COM lead to the neutral wire. 2 L1 L2 L3 3 3-Phase 4-wire - connect the COM lead to the neutral conductor. 3-Phase 3-Wire - connect the COM lead to an earth ground. COM COM 1. Insert the black test lead into the meter’s COM input terminal. 2.
AC Current Measurements Important Clamp Measurement Considerations Place the conductor under test at the center of the transformer jaw for the best measurement accuracy. This meter can only measure one conductor at a time. Do not clamp two or more conductors. Clamp the wire so that the FACE of the meter is towards the source of power. To measure AC Current, connect the meter as follows: 1. Set the Rotary switch to the AAC. 2. Clamp around one conductor. 3.
Power Measurements Active, Reactive, and Apparent Power Measurements There are three displays modes in this section as detailed in this section: kW Active Power on Main Display kVA Apparent Power on Main Display (Reactive power on Secondary Display) kVAR Reactive Power on Main Display (Apparent power on Secondary Display) (Phase Angle on Secondary Display) WARNING: To avoid meter damage and personal injury do not measure RMS signals greater than 750VAC or 1000AAC.
3-Phase, 4-Wire Power Measurements 1. Connect the four voltage leads as shown in Figure. 7 2. Clamp the transformer jaw around the power conductors connected to the L1 voltage lead. 3. Set the meter to kW. The dual display shows the Active power kW value and the Phase Angle (PG) value. 4. Press the L1-L2-L3 button to choose the first phase L1 (see figure 8). 5. Press the ∑ button to save and sum the measured value Figure 7 for L1. (see Figure 8) 6. 7.
Figure 8 Figure 9 12 PQ2071-en-GB_V1.
3-Phase, 3-Wire Power Power Measurements Note: When measuring 3 phase / 3-wire systems, hold down the L1-L2-L3 button for 5 seconds to display the 3ϕ3w icon. (Press and hold the L1-L2-L3 button again for 5 seconds to exit the 3 phase/3-wire mode back to the default 3Φ4wire mode). Connect the Meter as shown in Figure 10. Figure 10 1. Insert the Red (L1) and Blue (L3) test leads into the L1, L3 meter input terminals and connect these to 2 separate phases of the circuit under test as shown in Figure 10. 2.
Single Phase and Split Phase Power Measurements 1. 2. 3. 4. 5. 6. 1. Clamp the transformer jaw and around the Power wire. 2. Connect the L1 test lead to this Power wire. 3. Connect the COM test lead to the neutral/com wire. 4. Set the Rotary switch to the KW, kVA or kVAR position 5. Press the L1-L2-L3 button to choose phase L1. 6. The display will show the power value. The display will show the power value. Single Phase Split Phase 14 PQ2071-en-GB_V1.
Power Factor WARNING: To avoid meter damage and personal injury do not measure RMS signals greater than 750VAC or 1000AAC. Note: The MAX/MIN feature is not operational when measuring power factor. A minimum of 10 amps is required for measuring an accurate power factor. Power Factor measurement 1. Set the Rotary switch to the PF position. 2. 3-phase - Connect the meter as shown in Fig. 7 (3P4W) or Fig. 10 (3P3W) Single phase – Connect the L1 test lead to the Power wire and COM to the neutral wire. 3.
Kilowatt Hours WARNING: To avoid meter damage and personal injury do not measure RMS signals greater than 750VAC or 1000AAC. To test Kilowatt hours, connect the Meter as follows: 1. Set the Rotary switch to the kWh position. 2. Connect the meter as shown in Fig. 7 (3P4W) or Fig. 10 (3P3W) for 3-phase connections. Single Phase – connect the L1 test lead to the Power wire and COM lead to Neutral. 3. Clamp around the phase to be measured. (Power wire for single phase) 4.
LCD Backlight Button The LCD is equipped with backlighting for easier viewing, especially in dimly lit areas. Press the backlight button to switch the backlight ON. The backlight will automatically switch OFF after approx. 20 seconds. Press the button to turn the backlight off manually Automatic Power OFF In order to conserve battery life, the meter will automatically turn off after approximately 25 minutes.
Maintenance WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input terminals, and turn OFF the meter before opening the case. Do not operate the meter with an open case. Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents. If the meter is not to be used for 60 days or more, remove the battery and store it separately. Battery Replacement 1.
Electrical Specifications Current, Voltage, and Frequency Range & Resolution Function Accuracy (% of reading + digits) Overload Protect Input Impedance Frequency range ± (2% + 5d) 1000A N/A 50-60Hz ± (1.2% + 5d) 750V rms 10M 50-120Hz 40.0 AAC AC Current 100.0 AAC 400.0 ADC 1000 ADC 100.0VAC AC Voltage 400.0 VAC 750.0VAC Frequency 50 to 200Hz ± (0.5% + 5d) Active Power (kW) W = V x A x COSθ Voltage Ranges Current / Voltage Current Ranges 100V 400V 750V 40A 4.00KW 16.00KW 30.
Apparent Power (kVA) VA = V x A Voltage Ranges Current / Voltage Current Ranges 750V 100V 400V 40A 4.00KVA 16.00KVA 30.00KVA 100A 10.00KVA 40.00KVA 75.00KVA 40.00KVA 160.0KVA 300.0KVA 100.0KVA 400.0KVA 750.0KVA 400A 1000A Accuracy ±(3%+5) Resolution <1000KVA: 0.01KVA; 100kW: 0.1KVA Reactive Power (kVAR) Var = V x A x SINθ Voltage Ranges Current / Voltage Current Ranges 750V 100V 400V 40A 4.00KVAr 16.00KVAr 30.00KVAr 100A 10.00KVAr 40.00KVA 75.00KVAr 400A 40.
Power Factor PF = W / VA Range Accuracy Resolution Measurement Considerations 0.3~1 (capacitive or inductive) ±0.022 0.001 Minimum current 10A Minimum voltage 45V 0.
General Specifications Clamp jaw opening 57mm (2-1/4") approx. Display Dual 4-digit (9999 counts) backlit LCD Bargraph 100 units Low Battery indication Battery symbol is displayed Over-range indication ‘OL’ display Internal Reading Memory 99 readings can be stored, recalled, and cleared. External PC Memory 50,000 readings can be recorded on a connected PC running the supplied PC software. Readings can be exported to a spreadsheet.
