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Transformer Testing

Smart Transformers: Enhancing Grid Efficiency and Reliability

The evolving demands of modern power grids necessitate the adoption of advanced technologies that can provide enhanced efficiency, reliability, and flexibility. Smart transformers are at the forefront of this technological revolution, offering a range of capabilities that significantly improve the...

The End of the Road for Transmission Incentives

In a significant shift, the Federal Energy Regulatory Commission (FERC) has decided to abandon its transmission incentives policy, particularly the construction work in progress (CWIP) incentives. This decision marks a pivotal change in how transmission projects are financed and regulated,...

Breaker Testing

Vacuum Interrupter Testing for Circuit Breakers

How to predict field life using vacuum interrupters BY FINLEY LEDBETTER, Group CBS Utilities have widely replaced older air-magnetic and oil interrupters for circuit breakers rated at one kilovolt (kV) or higher with vacuum interrupters (VI) due to higher interrupt capability. Vacuum interrupters...

Cable Testing

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HV Test Equipment

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
  • ...

HV Test Equipment Articles

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FLIR Thermal Camera T860

T&D Buyer’s Guide Companies

HV Test Equipment Videos

Importance of Partial Discharge Monitoring

PFT Series Product Training

Bearing Toolbox for Advanced Bearing Failure Analysis

HV Test Equipment Products

M5500 - Sweep Frequency Response Analyzer

AEMC 6255 Micro-Ohmmeter with DataView® Software (Up to 25A)

M4100 Power Factor/Tan-Delta instrument - High Voltage Apparatus Tester

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Aerial Lift Test Sets - Alt Series Product Catalog

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Electrical Maintenance Handbook, Vol. 10