The following is a description of an inverter fault on an Enercon Compak 9000 power supply.
Symptom
The inverter fault light occurs only after a specific power level is obtained.
Fault
This type of fault is caused by a high voltage short in the output load. To isolate this fault, proceed with the troubleshooting section for a High Voltage Trip.
Symptom
The inverter fault light occurs immediately on starting the power supply regardless of the desired power level.
Fault
The DC to AC inverter section of the power supply has a fault. This could be a defective device, a defective driver board or both.
Caution
When a defective device is replaced, ensure the associated gate leads are replaced also. If not, the leads may result in additional device failures.
Solution
- Check the chopper and inverter devices in accordance with the device checks on page 2. (Item 14* & 15*).
- If defective devices are identified, replace both the device and the leads.
- If no defective devices are identified, proceed.
- Disconnect the output leads from the power supply to the high voltage transformer. Restart the power supply and check the symptoms.
- If the inverter fault occurs, replace the driver board (Item 11*).
- If no inverter fault proceed to troubleshoot a High Voltage Trip fault
* The Component Layout Drawing for the Compak 9000 Power Supply comes in two power ranges, 5 to 20 kW and 25 to 30 kW. Please select the appropriate power range of the power supply used in your system.