18
1.
Overview of the unit
1.5 Multi-circuit metering (continued)
●
Allocating the circuits used and the CTs for each phase
and wire type
The following table shows the phase and wire types and the CT allocations for each measuring circuits. As circuit
A is used irrespective of the phase and wire type, you must make settings for measurement ("Circuit A
settings(
By enabling circuits B to D to increase the number of measurement points ("Settings for circuits B to D (when
measuring 2 circuits or more) (
52)"), you can meter electricity using the required number of circuits. This are
disabled by default.
Phase and wire
type
Abbreviatio
ns for
phase and
wire types
Measuring circuits
Circuit A
Circuit B
Circuit C
Circuit D
3-phase 4-wire
3P4W
CT1, CT2, CT3
̶
̶
̶
1-phase 2-wire
1P2W
CT1
CT2
CT3
CT4
1-phase 3-wire
1P3W
CT1, CT2
̶
CT3, CT4
̶
3-phase 3-wire
3P3W
CT1, CT2
̶
CT3, CT4
̶
1-phase 2-wire
voltage selected
1P2W2
CT1
CT2
CT3
CT4
1-phase 3-wire
composite
1P3W2
CT1, CT2
̶
CT3
CT4