12
Connect the test probe of COM (black) terminal to the
neutral line.
Connect the test probe of V (red) terminal to the power line.
Clamp the conductor where V (red) terminal is connected.
The power clamp will automatically select the appropriate range.
Read the Watt and PF values displayed on the LCD.
Press YELLOW button to select KW/PF, A/V, or KVA/PF.
KVAR is a calculated value, and its accuracy greatly
depends on the accuracy of V, A and KW especially when
PF is very close to 1. To get a more accurate value when
PF is greater than 0.91 (
φ
< 25
°
), users can obtain KVAR by
themselves from the following equation for pure sine wave
input :
PF
KW
KVA
=
KVA (Apparent Power) : KVA =
V A
*
1000
KVAR (Reactive Power) : KVAR= (KVA)
(KW)
2
2
−
NOTE
The "+" sign printed on jaw must face the power source for
accurate measurement.
