Extech Instruments 382065 User Manual page 8

Note: When calculating KVAR, the KVAR accuracy greatly depends on V, A and KW
measurement accuracy (especially when PF is very close to 1). To get a more accurate
value when PF is greater than 0.91 ( φ < 25 ° ), use the following equation for a pure sine wave
KW
PF =
KVA
Note : The "+" sign printed on the jaw must face the power source.
3 φ 3W AC/DC Power Measurement
WL12
3 3W
WL12
PF
3 3W
600V
KVA (Apparent Power): KVA =
KVAR (Reactive Power): KVAR=
HOLD
Hz
OFF
V
1000A
KW
3 3W
3 4W
WL12
3 3W
PF lag
lag
KW 600V MAX CAT
MAX CAT
Figure 4
8
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2
(KVA) −
(KW)
KW
Model 382068 V3.0 4/2005
* A
V
1000
2