44
4.2.18 Calculation of the Power Factor
Measurement Range (1)
-1.00 to +1.00 (2)
Specified Measurement
Range
0 to 50% of the
measurement range
50 to 100% of the
measurement range
Accuracy
± (6% R +3cts)
± (3% R +3cts)
Resolution
0.01
Note (1)
If one of the terms in the calculation of the power factor is displayed
as "OL", or forced to zero, the display of the power factor is an
indeterminate value "----".
Note (2)
The power factor is given a sign that indicates whether the load is
inductive (sign "+") or capacitive (sign "-"). This sign is not determined
by that of the active power, but by the phase lead or lag between the
U and I signals.
Note (3) - Sign of the power factor according to the four-quadrant rule (§4.2.12):
Quadrant 1:
Power factor PF
sign + (inductive system)
Cos
Φ
sign +
Quadrant 2:
Power factor PF
sign - (inductive system)
Cos
Φ
sign -
Quadrant 3:
Power factor PF
sign + (inductive system)
Cos
Φ
sign -
Quadrant 4:
Power factor PF
sign - (inductive system)
Cos phi
sign +
Specific characteristics in MAX/MIN mode (from 10Hz to 1kHz):
Accuracy: add 1% R to the values in the table above.
Capture time: approximately 100ms.
4.2.19 Frequency Measurements
4.2.19.1 Voltage
Measurement
Range (1)
5.0 to
999.9Hz
1000 to
9999Hz
10.00 to
19.99kHz
Specified
Measurement
Range
1 to 100% of the
measurement range
0 to 100% of the
measurement range
Accuracy
± (0.4% R +1ct)
Resolution
0.1Hz
1Hz
10Hz
4.2.19.2 Current
Measurement Range (1)
5.0 to 1999Hz
Specified Measurement Range
1 to 100% of the measurement range
Accuracy
± (0.4% R +1ct)
Resolution
0.1Hz
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