Ac Current Inputs - Datakom D-500 MK2 User Manual

D-500 MK2 User Manual

3.3. AC CURRENT INPUTS

Measurement method:
Sampling rate:
Harmonic analysis:
Supported topologies:
CT secondary rating:
Measurement range:
Input impedance:
Burden:
Maximum continuous
current:
Measurement range:
Common mode offset:
Display resolution:
Accuracy:
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.
True RMS
8000 Hz
up to 31th harmonic
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
5A
5/5 to 5000/5A minimum
15 milliohm
0.375W
6A
0.1 to 7.5A
Max 5VAC between BAT- and any CT terminal.
1A
0.5% + 1 digit @ 5A (± 4.5A @ 5/500A full range)
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Firmware V-6.3