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Chapter 3 Specifications
Measurement
conditions
Singe phase/balanced three phases,
50/60 Hz, sine wave
Measurement range Effective measurement current range:
10 A to 1000 A
Effective measurement voltage range:
80 V to 600 V
Phase angle measurement φ
Method of
measurement
Measurement range
Obtained from phase detection circuit.
Measurement
Mode
Resolution Measurement Range Accuracy
φ
0.1 LEAD 90 to 0 to LAG 90 3
Power factor measurement λ
Method of
measurement
Measurement range
Obtained by calculation from phase
angles.
Measurement
Mode
Resolution Measurement Range Accuracy*
cosφ 0.001 LEAD 0 to 1 to LAG 0 3 2dgt.
* Calculating error of 2 dgt. is added to phase angle measurement error.
Reactive factor measurement
Method of
measurement
Measurement range
Obtained by calculation from phase
angles.
Measurement
Mode
Resolution Measurement Range Accuracy*
sinφ 0.001 LEAD 0 to 1 to LAG 0 3 2dgt.
* Calculating error of 2 dgt. is added to phase angle measurement error.
3.1.4 Specifications of Power Factor and Phase
Angle Measurements 1φ
φφ
φ PF Meter and 3φ
φφ
φ
PF Meter
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