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Case Study

Solar O&M Division

Home > Case Study > Critical Breakdown Maintenance (Central & String Inverters).

Critical Breakdown Maintenance (Central & String Inverters).

Challenge

Sudden inverter shutdown due to IGBT failure, DC insulation faults, LCL filter issues, and CT abnormalities, leading to generation loss.

Approach

Immediate fault isolation using event logs, waveform analysis, and SCADA data

Safe shutdown, LOTO, and sectional isolation

OEM-aligned repair strategy and rapid spares mobilization

Post-repair validation and load normalization

Outcome

  • Faster inverter restoration
  • Controlled risk during high-voltage interventions
  • Minimized secondary failures and repeat faults

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