Datakom D-500 MK3, User Manual

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D-500 MK3 User Manual Firmware V-7.5
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Measurement method: True RMS
Sampling rate: 8000 Hz
Harmonic analysis: up to 31th harmonic
Supported topologies: 3 ph 4 wires star, 3 ph 4 wires delta,
3 ph 3 wires delta
3 ph 3 wires delta L1-L2
3 ph 3 wires delta L2-L3
2ph 3 wires L1-L2
2ph 3 wires L1-L3
1 ph 2 wires
CT secondary rating: 5A
Measurement range: 5/5 to 5000/5A minimum
Input impedance: 15 milliohm
Burden: 0.375W
Maximum continuous
current:
6A
Measurement range: 0.1 to 7.5A
Common mode offset: Max 5VAC between BAT- and any CT terminal.
Display resolution: 1A
Accuracy: 0.5% + 1 digit @
5A (± 4.5A @ 5/500A full range)
SELECTING THE CT RATING AND CABLE SECTION:
The load on a CT should be kept minimum in
order to minimize phase shift effect of the
current transformer. Phase shift in a CT will
cause erroneous power and power factor
readings, although amp readings are correct.
It is advised CT rating to be selected following
this table for the best measurement accuracy.
3.3. AC CURRENT INPUTS