4-2 OPERATION PROCEDURE
・
For the safety use, strictly obey contents of CAUTION & WARNING stated in this
manual.
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MEASUREMENT OF LINE CURRENT
1) Set the power switch "ON".
2) Set the range switch to the appropriate range to be measured.
(Select bigger range than the expected current value to be
measured).
3) Open CT part and clamp it to the conductor (one wire) to be
measured. Close CT completely.
4) Read the displayed value (in case of over range, the display
will show "OL").
In case of the place where the displayed value can hardly read,
use data hold function. When "DH" sign is lightening on the
display, this function is effective.
Note: Clamp CT to one wire. In case of clamping CT to parallel vinyl wire, etc. in a
lump, cannot measure the line current.
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MEASUREMENT OF LEAKAGE CURRENT
1) Measurement for leakage current of grounding line
Same procedure as for the measurement of line current.
2) Except for grounding line:
The operation is same as for the measurement of line current but clamp CT to
two wires together in case of single phase and to three or four wires together in
case of three phase/three or four wires.
▲
MEASUREMENT OF HARMONICS CURRENT
1) Set the power switch "ON".
2) Set the range switch to the appropriate range to be measured
(Select bigger range than the expected current value).
3) Open CT part and clamp it to the conductor (one wire) to be measured.
Close CT completely. (In case of leakage current measurement, refer to
"MEASUREMENT OF LEAKAGE CURRENT").
4) While reading the displayed value, set the range to the most appropriate one.
(Take care of the display not to become "OL").
5) By pressing "HARMONICS" switch, measure each harmonics current.
