Current Imbalance Fault | Xantrex Technology PV-30208 guide

SECTION 5

TROUBLESHOOTING

processed.

•Check +/- VDC power supply outputs.

•Check control wire harness integrity (Refer to the system schematic in Section 7).

•Check CT harness for damage.

•Check CT harness +/-15VDC at CT.

•Check CT output voltage (mV) with reference to ground.

•Replace CT showing high output voltage offset.

(9) Current Imbalance Fault (0x10000)

The PV-30208 has determined that there is an excessive phase-to-phase current imbalance, while the system is operating.

•Observe individual phase currents during operation with the operator interface program and with a true RMS oscilloscope. Verify waveforms are sinusoidal and maintain proper phase relationships.

•Determine which phase is imbalanced.

•Verify phase conductor wiring integrity (Refer to the system schematic in Section 7).

•Check CT control wire harness integrity (Refer to the system schematic in Section 7).

•Replace CT on the phase exhibiting the current imbalance.

Stop Switch Fault

The on/off switch, located on the upper enclosure, is disabled. The contact block on the back of the switch must be open for the PV-30208 to report this message.

If the switch is in the on position and the LCD reads ‘Stop Switch’:

•Isolate the PV-30208 from external power (Refer to Section 2).

•Verify continuity across the switch contact block while the switch is turned to the on position.

•Verify continuity between J9-1 and J9-2 while the switch is enabled.

DOCUMENT: 151315PV-30208 Photovoltaic Inverter5-5

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.

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Xantrex Technology PV-30208 important safety instructions Current Imbalance Fault, Stop Switch Fault

Contents

Copyright 2003, Xantrex Technology Inc South Vasco Road Table of Contents Main Enclosure Section Product Description IntroductionMajor Components Interconnection Standards Compliance Section Product DescriptionMatrix Bus Board Solar Control Unit SCU Equipment Symbol Section Product Description Specifications PV Ground Fault Detection Section Safety Safety FeaturesEnclosure Front Access Panel Anti Island Protection Section Safety Isolation Procedure Utility Side Isolation Transformer Requirements Torque and Wire Gauge Specifications Installation Instructions Section Installation and Initial TURN-ONInstallation Floor Mounted Section Installation and Initial TURN-ON Array Grounding Ground Fault DetectionPhase-Sequencing Section Installation and Initial TURN-ON PV-30208 Inverter Wiring Diagram Optional BoxFrame Optional PV Conductor PV Array Ground Jumper Initial Power Visual Inspection, PV Array WiringVisual Inspection, Isolation Transformer WYE/WYE Visual Inspection, PV-30208 System Verification Fine Tuning Operating States Section Operation Description of System OperationOverview Section Operation Operation Features Block Diagram Of Monopolar ConfigurationSection Operation Current Imbalance Detection Peak Power TrackingDC Overvoltage Detection Automatic Wake Up PV Voltage Optimization Section Operation Operator Interface Example of Normal System Operation System Fault System Sleep Test System Stop System Shutdown Section Operation System Operating Parameters User Factory Password Parameter Description Section Operation Fault Conditions Section Troubleshooting General IPM Device Fault 0x0001 Through Fault Descriptions AC Line Voltage Low Fault Section TroubleshootingAC Line Voltage High Fault AC Line Under Frequency Fault Ground Current Fault AC Line Over Frequency FaultDC Bus Over Voltage Fault CT Offset Fault Stop Switch Fault Current Imbalance Fault Section Preventative Maintenance Periodic Maintenance TURN-ON Procedure Section Preventative Maintenance Optional Accessories Section Drawings and Parts List Drawings ListWarranty and Certifications Page Page Page Page Page Enclosure, Upper Page Xantrex PV Series Limited Warranty and Registration