Substation Testing & Maintenance
Case Study: Rapid Changes in Bushing Health
Substation Maintenance Best Practices
Substation Testing & Maintenance
Insulation Resistance Test
Insulation Resistance (IR) test, often called Megger test, is more than 100 years old and assumed to be a very straightforward test. During my inspection and testing work in the past 15 years in Canada, US, and internationally, I have seen different practices of performing and interpretation of IR test.
The application of IR test includes:
- At the point of installation, pre-commissioning to ensure minimum specifications are met
- Verify proper installation after a repair
- Troubleshooting
- ...
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