The power clamp will process those two sets of data (W
L12
,
W
L23
), and show the result on the LCD. W
L123
symbol will
be shown to indicate the watt of 3
φ
3W power.
At this moment, the watt of 3
φ
3W power is stored into the
memory.
If willing to read the details of that singly data record,
please refer to 5-9.
W
3
φ
3W
= W
RS(L1L2)
+ W
TS(L3L2)
KVA K
W
KVAR
WW W33
2
33
2
33
φφ φ
=+
PF
KW
KVA
W
W
W
33
33
33
φ
φ
φ
=
If willing to record data (W
L12
or W
L23
), press “RECORD”
button to complete.
NOTE
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
RS
(or W
L1L2
) and W
TS
(or W
L3L2
)
in 3
φ
3W unbalanced power.
NOTE
The "+" sign print
ed on jaw must face the power source, and
make sure all the connections and clamping are correct for correct
measurement.
NOTE
In the 3
φ
3W unbalanced power measurement
, one of W
RS
or
W
TS
could be negative. Users must make sure all the
connections and clamping are correct to obtain correct power.
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