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• The power clamp processes the two sets of data and calcu-
lates the true power (kW) of the system, which is shown on
the main display, and the power factor (PF), which is shown
on the upper display. RST is shown on the LCD display to
indicate that this is a measurement of the total system.
• Pressing the 3 φ KVAR KVA button toggles to display the
apparent power (kVA) of the system, which is shown on the
main display, and the reactive power (kVAR), which is
shown on the upper display.
• Pressing the READ NEXT button clears the stored data from
memory and readies the power clamp for another three
phase 3-wire calculation.
Note: The "+" sign on the jaw must face the power source for
correct measurement.
Note: In the 3 φ 3W unbalanced power measurement, one of
W
or W
could be negative. Make sure all the connections
RS
TS
and clamping are correct to obtain correct power and power
factor measurements.
1 φ 3W AC+DC Power Measurements
The measurements for a single phase 3-wire system are similar
to a three phase 3-wire unbalanced measurements, except the
nomenclature is different.
To Measure AC+DC Power Measurements in a single
phase 3-wire system
• Set rotary switch to 3 φ 3W without jaws clamping onto any
wire.
• The LCD display will show a flashing R to indicate that the
meter is ready for the first measurement.
• If the watt reading is not zero, press the DC A/W ZERO but-
ton once to zero out the watt reading.
• Insert the black test lead into the COM terminal and the red
test lead into the + terminal.
15
L1G Measurement
• Connect the black test probe to ground and the red test
probe to the first phase (R or L1).
• Using the trigger to open the jaws, fully enclose the phase
(R or L1) within the clamp.
• Release the trigger and be sure that the jaws have closed
completely.
• Wait until the reading is stable, and press the READ NEXT
button to capture the reading, storing the data in memory.
• The LCD display will show a flashing T to indicate that the
meter is ready for the next measurement.
• Remove the clamp and test probes from the phases tested in
the first measurement.
L2G Measurement
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