Eaton Power Xpert Solar 1500 User Manua

TroubleshootingPower Xpert Solar 1500/1670 kW Inverter MN141001EN—October 2014 www.eaton.com 51GRF7 Grid Overcurrent Software detected grid over currentTrips if any phase > 3090 A >5 msecInverter sourcing too-much current into the transformer/grid■ Possible PV Cloud-effect induced power-spike coupled tomarginal tap settings and/or rapid grid-voltage drop (localexcessive power demands)1. Check transformer taps for proper set-up ratio can indicateincorrect MV-transformer or mains’ transformer taps2. Check inverter current-transformers CTA/B/C wiringIF1 Inverter 1 Current Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 ATrip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB12. Fault reset on HMI, retry inverterIF2 Inverter 2 Current Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 A)Trip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB22. Fault reset on HMI, retry inverterIF3 Inverter 3 Current Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 A)Trip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB32. Fault reset on HMI, retry inverterIFS1 Inverter 1 Fault(Software)Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 A)Trip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB12. Fault reset on HMI, retry inverterIFS2 Inverter 2 Fault(Software)Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 A)Trip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB22. Fault reset on HMI, retry inverterIFS3 Inverter 3 Fault(Software)Instantaneous Module Overcurrent on SIBboard 110% of peak nominal value(Nominal value = 1000 A)Trip level: 1550 A peak, 1100 A RMS1. Check all ribbon cable connections. On SIB32. Fault reset on HMI, retry inverterIF4 Inverter Control Internal Fault Contact Eaton supportIF5 Internal WatchdogWarningInternal EPLD not responding Check PIB for physical visual damage■ Possible ESD induced failureNever use non-ESD free Vacuum equipment or compressed air toclean the inverterOF Over-Frequency Grid over-frequency alarmFrequency >101.6%Rated Frequency [60.96 Hz] for 1.2 secSEL set for UL1741 grid-tie parameters: incompatible withover-frequency ride-thru■ Check for/if SCADA control seeking over-frequency ride-thruSEL Protection Relay Schweitzer Protection Relay fault Check the SEL Protection relay for proper operation■ SEL monitors utility over/under voltage and frequency, as per itssettingsSEQ2 Wakeup Timeout Magnitude and phase voltage synchronizationfailed to be achieved within the time threshold.The grid-sync feedback via CAUX4 unable tosustain waveform for 30 sec.1. Check for collapsing PV array voltage when inverter is enteringpower-export mode2. Check Sync transformers TR5 TR6 TR7 in LC cabinet:■ Fuses F78 -83 1-Amp■ Resistors R7A-C | R8A-C | R9A-C wiring at TBT/R5 /R6 /R73. Check CAN Board CAUX4 connector J5 wiring to/from TBT/R5 /R6 /R7Table 13. Warnings That Become Faults: WARNING R FAULT, continuedWarning R F Display Text DescriptionResolutionFollowing these steps. if fault continues, contact Eaton service