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Circuit Breaker Oil Testing

Oil circuit breakers are old technology that is being increasingly replaced with SF6 Gas circuit breakers.  Both are typically used in high to medium voltage distribution applications.

Circuit breaker oil testing can include some or all the following tests:
  • Dielectric breakdown voltage: ASTM D877
  • Color: ASTM D1500
  • Power factor: ACTM D294
  • Interfacial tension: ASTM D971
  • Visual condition: ASTM D1524
  • Neutralization number (acidity): ASTM D974
  • Water content: ASTM D1533