2-7
IM CW120-E
Components and Indications
2
Voltage - 150/300 V range:
If the sampled value exceeds 200% of the rated voltage or if the rms value of
the measured voltage exceeds 130% of the rated range
Voltage - 450 V range:
If the sampled value exceeds 156% of the rated voltage or if the rms value of
the measured voltage exceeds 110% of the rated range
Current:
If the sampled value exceeds 300% of the rated voltage or if the rms value of
the measured voltage exceeds 130% of the rated range
● Indications When the Measured Value Is Too Small
Displayed Item
Voltage
Current
Active power
Reactive power
Active electric energy
Condition
≤1.5 V
≤0.4% of rated range
≤0.17% of rated range
≤0.17% of rated range
≤0.17% of rated range
Indication
0 V
0 A
0 W
0 Var
0 Wh (integration stopped)
Displayed Item
Reactive power
Power factor
Frequency
Condition
V1 input ≤10% of rated range; or frequency
≤40 Hz or ≥70 Hz
The voltage or current is displayed as ; or
V1 input ≤10% of rated range; or frequency
≤40 Hz or ≥70 Hz
≤40 Hz or ≥70 Hz
Indication
---- Var
---- PF
---- Hz
TIP
Even when an instantaneous value is displayed as , the integration calculation is carried out continu-
ously. The accuracy of the electric energy value, however, is undefined in this case.
2.4 Overrange and Other Marks Shown during Measurement
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