Wiring Diagrams - Panasonic KW8M User Manual

3.2 Wiring Diagrams

Please connect a breaker (3 to 15A) to the 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 using the several CTs, each CT is separated as far as possible. If they are near it might not
measure correctly by the interference of magnetic field.
◆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.
KW8M Eco-POWER METER (1A/5ACT input type)
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