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2011 Internal Fault INV IGBT NEUT DPC Sensed Inverter Neutral IGBT Failure System Severity Level 5 This fault is declared when the DPC Control Board senses a a malfunction of the Inverter Neutral Leg Isolated Gate Bipolar Transistor (IGBT) module. Recommended Spare Parts • Digital Power Controller (DPC) Symptom Probable Cause Analysis Repair Solution Neutral IGBT Fault Status indicates fault Ground Wiring Refer to the Installation documenta- tion for proper grounding configura- tion. Correct electrical wiring configuration Shorted Load Verify the external loads do not have a phase to neutral or phase to ground shorted. Disconnect loads and start the system in the Stand Alone mode. Fix problem with the loads Inverter IGBT Shorted Measure the resistance from DC (+) to each leg of the IGBT, and from each leg to DC (-) to determine if a short circuit exists. Check internal diodes in IGBT module. Also, refer the Troubleshooting a MicroTurbine that Does Not Wake Up section. Replace DPC. Refer the Troubleshoot- ing a MicroTurbine that Does Not Wake Up section. BCT IBT Shorted Refer to the Troubleshooting a MicroTurbine that Does Not Wake Up section. Refer to the Trouble- shooting a MicroTurbine that Does Not Wake Up section. Observe Safety Precautions - Refer to Safety Instructions for Details 430001-001 Rev D (June 2003) 3-10 Model C30 Troubleshooting Guide This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | SERIES 2000 FAULT CODES Power Board Faults Capstone
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