Amprobe ACD-30P Clamp-On-Power-Meters - Manual (Page 10)

9
Power Measurement
� Polarity configuration note:
when measuring load circuits with power absorptions, positive (‘+’ implied) w or kw (Real
Power) readings indicate correct measurement setups. negative readings (“-“ segment on)
indicate either the clamp-on jaws direction or the test leads polarity is reversed in such
cases. Correct the setups to get correct readings.
Power Measurement - Single Phase (Ø) (see figure 8)
Select the Power position.
Press SELECt button momentarily to select W (real power), VAR (reactive power) or VA
(apparent power) measurement functions.
Connect CoM input to neutral or gRD.
Connect ‘ + ‘ input to the phase being tested.
Clamp jaws around the phase wire
The display will show reading, W (real power), VAR (reactive power) or VA (apparent
power) measurement and Pf.
Power Measurement – 3 Phase (Ø) - 3 Wire (see figure 9)
Select the Power position.
Press SELECt button momentarily to select W (real power) or VA (apparent power)
measurement functions.
Connect CoM input to Ø 3 terminal .
Connect ‘ + ‘ input to Ø 1 terminal
Clamp jaws around to Ø 1 wire
The display will show reading, W (real power) or VA (apparent power) measurement
and Pf.
write down the reading as kw1, kVA1
Connect CoM input to Ø 3 terminal .
Connect ‘ + ‘ input to Ø 2 terminal
Clamp jaws around to Ø 2 wire
The display will show reading, W (real power) or VA (apparent power) measurement
and Pf.
write down the reading as kw2
Load balanced Unbalanced
kw Total kw1 + kw2 kw1 + kw2
kVA Total 1.732 * kVA1 not applicable
kVAR Total √ kVA Total 2 - kw Total 2 not applicable
Power Measurement - 3 Phase (Ø) - 4 Wire (see figure 10)
Select the Power position.
Press SELECt button momentarily to select W (real power), VA (apparent power) or
VAR (reactive power) measurement functions.
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