Display - Vdc Over Fast
Description -
Fast DC over-voltage protection of 110% of rated feedback. (Nominal value = 1000 Vdc)Trip level: 1100 Vdc for 1 msec
Resolution-
Reason dependent upon time of occurrence: sleep mode vs.power-export mode
Sleep mode: Array (string) Voc exceeds inverter rating: see DCF4 Power-export mode: Possible cloud-effect of solar array during extreme-cold
Check possible miss-wiring in the array … exceeding design-limit of modules/string
1. Check HMI Monitors, Main menu; 'DC Voltage
2. Check Main VTB4 sensor in DC cabinet section
3. Check stack VTB1 VTB2 VTB3 sensors in LC Cabinet
