Wiring
14
KW2M-A/X User's Manual
Three-phase four-wire system
*3 CTs are needed to measure three-phase four-wire system.
*6 CTs are needed to measure 2-circuit.
Vn terminal should be connected to grounded N-phase.
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Measuring a load with exceeded input voltage
A voltage transformer (VT) is needed when you measure a load with over input voltage.
Use a VT with a secondary voltage rating of 110V.
Grounding the secondary side of VT and CT is not necessary with a low-voltage circuit.