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Once a phase is selected as COM, users can not change this selection in the
subsequent measurement. For example, if S (or L2) phase is selected, S (or L2)
phase is always connected to the COM during measurement of W
W
(or W
) in 3 φ 3W unbalanced power.
TS
L3L2
1. The "+" sign printed on Panel must face the power source for accurate
measurement.
2. If the device under test is a switching power supply, the meter KW, PF and θ
reading maybe incorrect.
For 3 φ 3W unbalanced power measurements, W RS or W TS could be negative.
Ensure that all connections are correct before accepting a reading as valid.
NOTE
NOTE
NOTE
9
(or W
) and
RS
L1L2
380976 V3.2 4/11
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