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40
Measuring Leakage Current
Precautions for measuring the load current
IMPORTANT
Be sure to clamp the instrument around only one conductor wire. Regardless of the
single-phase and three-phase, when clamping around two or more wires together
in a bundle, the load current cannot be measured.
OK
NO
NO
NO
OK
NO
NO
NO
Do not clamp around
two or more wires.
Do not pinch a wire.
•
Special waveforms, such as that flowing through the secondary side of the inverter, may not be
measured.
•
In accordance with the magnitude of the input current, a sound may be generated from the jaws
due to resonance, but it does not affect the measurement.
•
When the magnitude of the input current is unknown, disable the filter function and start the
measurement using the auto-range or 200.0 A range.
HIOKI CM4002A961-02
Summary of Contents for CM4002
Page 2: ...HIOKI CM4002A961 02...
Page 11: ...3 Introduction HIOKI CM4002A961 02...
Page 32: ...24 Display Panel HIOKI CM4002A961 02...
Page 40: ...32 Inspection Prior to Measurement HIOKI CM4002A961 02...
Page 100: ...Index 92 HIOKI CM4002A961 02...
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