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Warning - GRF6

Display -  Grid C Voltage


Over-voltage protection of 125% of rated signal (Nominal value = 320/356 Vac)Trip level: 400/445 Vac > 1 msec


Inverter detecting over-voltage on its output

1. Check transformer taps for proper set-up ratio can indicate incorrect MV-transformer or mains’ transformer taps

2. Check inverter voltage-sense transformer TR1B wiring

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