HP Extech 380976 manual 380976 V3.1

Page 7

3-Wire KW, HP, KVA, KVAR, Power Factor & Phase Angle Measurement

1.First, measure WRS(L1L2) (refer to the diagram below).

a.Set the rotary switch to the “ V ”.

b.Press and hold the “HOLD” key while setting the rotary switch to “KW/KVA”, the 3φ3W and WL12 symbols will appear.

c.Insert the test leads into the jacks.

d.Select a phase (e.g. S or L2) as COM and connect the test probe of the COM (black) terminal to that phase (e.g. S or L2).

e.Connect the test probe of V (red) terminal to the second phase (e.g. R or L1).

f.Clamp the same phase as step e. (e.g. R or L1).

g.The power clamp will automatically select the proper range.

h.Wait until the reading is stable (about 6 seconds). Press the “HOLD” key to store the measured value. The WL23 symbol will appear.

2.Second, measure WTS(L3L2) (refer to the diagram that follows the steps below).

a.Disconnect the test probe from the phase where the jaw clamp was set in the previous measurement.

b.Connect the test probe to the third phase (e.g. T or L3).

c.Clamp the third phase where test probe is connected to (e.g. T or L3)

d.The power clamp will automatically select the proper range.

e.Wait until the reading is stable (about 6 seconds) and then press the “HOLD” key to store the measured value.

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380976

V3.1

6/08

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Contents 1Φ/3Φ 1000 Amp True RMS Power Clamp-On Model Introduction Table of ContentsSafety Information WarrantyWhen servicing, use only specified replacement parts Meter Description AC + DC Voltage Measurements MeasurementsAC Current Measurements 380976 V3.1 380976 V3.1 KVA 3φ 3W KW+PF Power Factor, KW+KVAR, KVA+θPhase Angle or A+V380976 V3.1 380976 V3.1 380976 V3.1 380976 V3.1 Resistance and Audible Continuity Measurements KVA 3φ 4WAC and DC µA Measurements Temperature MeasurementsCapacitance Measurements Diode TestsHold MX/MN Key Meter Control KeysRange Key Auto Sleep Disable Automatic Sleep Mode and Battery ReplacementBattery Replacement Specifications AC Voltage 50Hz to 400Hz True RMS Measurement SpecificationsAC Current 50Hz to 400Hz True RMS ΜA True RMS AC+DC1Φ/3Φ Reactive Power Kvar PF 0.5 or 60o 50/60Hz Temperature K-Type thermocouple1Φ/3Φ True Power PF 0.5 or 60o 50/60Hz 1Φ/3Φ Horse Power HP PF 0.5 or 60o 50/60HzFrequency Calibration and Repair Services1Φ/3Φ Apparent Power KVA Phase Angle 50/60Hz