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Lightning Arrester (LA) Services

Strategic Surge Protection & Asset Safeguarding

Protecting high-value substation assets from atmospheric and switching overvoltages is a priority. We offer specialized diagnostics to ensure your arresters provide a safe, low-impedance path for transients to ground.

Our LA Maintenance Services Include:

  • Leakage Current Monitoring: Measuring resistive leakage current to detect internal moisture ingress or aging of the ZnO blocks.
  • Insulation Resistance: Ensuring the external housing is free from surface contamination and tracking.
  • Surge Counter Verification: Checking that counters accurately record strike events for post-storm system analysis.
  • Grounding Continuity: Verifying the integrity of the connection to the main substation earth mat.