Wiring Diagrams - Panasonic KW8M User Manual

3.2 Wiring Diagrams

Please connect a breaker (3 to 15A) to power supply and voltage input part for safety reasons and to
protect the device. Grounding the secondary side of VT (Voltage transformer) and CT (Current
transformer) is not necessary with low-voltage circuit.
◆When measuring a load with rated input voltage
Single-phase two-wire system
One current transformer (CT) is required to measure single-phase two-wire system.
Single-phase three-wire
Two CTs are required to measure single-phase three-wire system.
Wire by diagram of single-phase 2-wire system when measure load using R-S with single-phase 3-wire
system.
Back view
Back view
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KW8M Eco-POWER METER