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10050 Grid Fault IDSP FUVA Inverter Fast Undervoltage Phase A Detection System Severity Level 4 10051 Grid Fault IDSP FUVB Inverter Fast Undervoltage Phase B Detection System Severity Level 4 10052 Grid Fault IDSP FUVC Inverter Fast Undervoltage Phase C Detection System Severity Level 4 In the Grid Connect mode, an AC low undervoltage indicates that the grid is operating under some fault condition or that a local island has formed. In either case, it is important that the inverter be shut down. A low undervoltage condition exists when any of the magnitude estimates of the phase A, B or C voltage inputs is less than [(√2) x Fast Undervoltage Limit]. If this fast undervoltage limit is reached for more than the fast undervoltage time-out period, an internal warning is logged. At this point the inverter output is suspended and a re-synchronization occurs. If two warnings are logged within the period given by Warning to Error time-out, then the system will shut down and declare errors for all events logged as warnings. Symptom Probable Cause Analysis Repair Solution In Grid Connected modes, the fundamental component of the AC voltage demand for the inverter IPM, is less than the fast undervoltage limit for more than the fast under voltage time- out period. The fast undervolt- age limit is wrongly set. Make sure that the frame PM is programmed properly, and it is supported by the installed control software. Re-program the frame PM. The fast undervolt- age timeout period is wrongly set. Make sure that the frame PM is programmed properly, and it is supported by the installed control software. Re-program the frame PM. Faulty DPC Control Board DPC Control Board needs replacing. Replace DPC Control Board (See Document 513176) Faulty DPC Power Board DPC Power Board needs replacing. Replace DPC Power Board Observe Safety Precautions - Refer to Important Safety Instructions for Details 430001-001 Rev A (Apr 2002) 189 Troubleshooting Guide Capstone Turbine Corporation reserves the right to change or modify without notice the design, the equipment 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 | Overview SERIES 8000 FAULT CODES Solenoid Faults
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