Warning - GRF5

Thomas Garcia

Modified on: Thu, 24 Jan, 2019 at 7:53 AM

Display- Grid B Voltage

Description-

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

Resolution-

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