15
Current Measurement
Current Measurement
DC current polarity detection function (p. 35)
If the measured value is negative, the buzzer will
sound, and the display will turn red (threshold: -10 A).
e.g.: 3P4W (3-phase, 4-wire) circuit
breaker (AC current measurement)
4
Hz
AUTO
(AUTO AC/DC)
(AC+DC A)
(DC A)
(AC A)
3
Clamp the wire.
2
Press for 1 sec.
→
Perform zero adjustment
1
Current
direction
Frequency detection range of AC current
CM4371, CM4372:
20.00 A range
4.00 A or more
600.0 A range
20.0 A or more
CM4373, CM4374:
600.0 A range
40.0 A or more
2000 A range
200 A or more
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