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Home >> Nissan-Datsun >> 2015 >> Leaf S >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> EV Control System - Introduction >> System Description >> Component Parts >> System Main Relay 1

System Main Relay 1

The system main relay 1 is integrated in the Li-ion battery and controlled by VCM. The system main relay 1 connects and disconnects the high-voltage circuit (+) side and Li-ion battery.

If the pre-charge to the inverter condenser is complete while high voltage power is supplied, VCM activates the system main relay 1 to supply power from the Li-ion battery to the EV system. Also when charging, VCM activates the system main relay 1 to supply power from an external charger to the Li-ion battery.

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