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4.2.11 Active DC Power Measurements
Measurement
Range (2)
0 to
9.999W
10.00 to
99.99kW
100.0 to
999.9kW
1000 to
1500kW (1)
Specified
Measurement
Range
1 to 100% of the
measurement range
0 to 100% of the
measurement range
Accuracy (3)
1000A
± (2% R +10cts)
1000 to 1500A
± (2.5% R +10cts)
1000A
± (2% R +3cts)
1000 to 1500A
± (2.5% R +3cts)
Resolution
1W
10W
100W
1000W
Note (1) - Display of O.L or ± O.L
- Above 1500kW in single-phase (1000V x 1500A).
- Above ±3000kW in REL mode.
Note (2) Any applied voltage greater than 1000V causes the emission of an
intermittent alarm beep to report a dangerous overload.
Note (3) The measurement result may be affected by an instability linked to the
current measurement (approximately 0.1A).
Example: For a power measurement made at 10A, the instability of the
measurement will be 0.1A/10A or 1%.
4.2.12 Active AC Power Measurements
Measurement
Range (2) (4)
5 to
9999W
10.00 to
99.99kW
100.0 to
999.9kW
1000kW (1)
Specified
Measurement
Range
1 to 100% of the
measurement
range
0 to 100%
of the measurement range
Accuracy (3)
1000A
± (2% R +10cts)
1000A
± (2% R +3cts)
Resolution
1W
10W
100W
1000W
Note (1) - Display of OL above 1000kW in single-phase (1000V x 1000A).
- Bandwidth in AC in voltage = 3 kHz, in current = 2 kHz
Notes (2) and (3) of the previous § apply.
Note (4) Any power measured less than 5W is regarded as zero and causes the
display of dashes "----"
If the voltage is less than 0.15V or if the current is less than 0.15A, the
power measured is regarded as zero and causes the display of "----"
Note 5 The active powers are positive for power consumed and negative for
power generated.
Note 6 The signs of the active and reactive powers and power factor are
defined by the four-quadrant rule below:
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