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Installation
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CPS- MM-LC Reference Manual (Hardware)
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31
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Connecting example with three-phase Wye (3-wire/4-wire,
three-phase solidly-grounded neutral system)
When connecting to the power of three-phase Wye cable, isolation resistance of all equipment
including inverters can be measured.
Connect phases (L1, L2, and L3), as well as the ground terminal with the voltage input terminal (L1/T1,
L2/T2, L3/T3, and REF) respectively. Then, put three cables of L1, L2, and L3 through the ZCT unit. AT
this time, these cables should be connected to the equipment or inverters.
Three-phase Wye (3-wire, three-phase solidly-grounded neutral system)
Three-phase Wye (4-wire, three-phase solidly-grounded neutral system)
Ⅲ
Ⅱ
Equipment/Inverter
L1
L2
L3
ZCT Unit
∼ ∼
∼
REF
Ⅲ
Ⅱ
Equipment/Inverte
L1
L2
L3
ZCT Unit
∼ ∼
∼
N
REF