382090 382091 V4.0 09/07
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Three-Phase 4-Wire (3P4W) Power System Measurement
U1 must be connected to the voltage source during the measurement of U2, U3, I1, I2 and I3
since U1 is the main signal source of the entire meter measuring system.
A, B, C: Line, N: Neutral, G: Ground;
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Face the arrow toward the load.
3P4W Wiring Connection Diagram
1. Press the
key to turn the meter on.
2. Press the WIRING key to select 3P4W; the 3P4W annunciator will display.
3. Connect the voltage test leads and the current probe to the meter.
Connect the black voltage test lead to the “N” terminal.
Connect the red voltage test lead to the “U1” terminal.
Connect the yellow voltage test lead to the “U2” terminal.
Connect the blue voltage test lead to the “U3” terminal.
Connect the I1 current probe output plug to the “I1” jack.
Connect the I2 current probe output plug to the “I2” jack.
Connect the I3 current probe output plug to the “I3” jack.
Connect the I4 current probe output plug to the “I4” jack.
4. Connect the voltage test leads and current probe to the electrical equipment to be tested.
CAUTION: Turn the meter off before connecting the voltage test leads and the
current probe to the electrical equipment under test.
Connect the black voltage alligator clip to the neutral line “N”.
Connect the red voltage alligator clip to line “A”.
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Connect the yellow voltage alligator clip to line “B”.
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Connect the blue voltage alligator clip to line “C”.
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Press the I1 current probe trigger to open the jaw and then fully enclose Line “A”.
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Press the I2 current probe trigger to open the jaw and then fully enclose Line “B”.
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Press the I3 current probe trigger to open the jaw and fully enclose Line “C”.
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Press the I4 current probe trigger to open the jaw and fully enclose neutral line “N”.
