Hioki PQ3100 - Leakage Current Measurement Procedures

57
Attaching Current Sensors to Objects
Leakage current measurement
Grounding wire
measurement
Clamp 1 line only. (Diagram A)
Batch
measurement
Clamp the electrical circuits together. (Diagram B)
Clamp 2 wires together in the single phase 2-wire system circuit, and 4 wires
in the 3-phase 4-wire system circuit.
Example:
Single phase 3-wire system circuit
Load
apparatus
Leakage
current lg
B-type
grounding wire
Transformer
A
B
B
3-phase 3-wire system circuit
Load apparatus
Leakage
current lg
B-type
grounding wire
A
D-type
grounding wire
A
B
B
4
Wiring (WIRING Screen)