Extech Instruments Extech 380976

380976 V3.2 4/11
8
3. The power clamp will process these two sets of data (W
L12
, W
L23
), and show the result on the
LCD. The W
L123
symbol will be shown to indicate 3
φ
3W power. The 3
φ
3W power (in watts) is
stored in the meter memory.
4. To read a single data record, press the “ HOLD ” key to select desired W
L12
, W
L23
or W
L123
display then press the “RANGE” key to select KW+HP (Horse Power), KW+PF (Power
Factor), KW+KVAR, KVA+
θ
(Phase Angle) or A+V.
5.
W
3
φ
3W
= W
RS(L1L2)
+ W
TS(L3L2)
WKVARW
W
KWKVA 33
2
33
2
33 φφφ +=
PF
K
W
KVA
W
W
W
33
33
33
φ
φ
φ
=
6. Set the rotary switch to another position to exit this mode and clear the stored data.