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Breaker Testing

Circuit Breaker Time and Motion Testing

Determining mechanical condition of high-voltage circuit breakers BY JOZEF LEVI, Doble Engineering Company Life expectancy of a newly installed high-voltage circuit breaker is approximately 40 years. Throughout its life, under normal circuit conditions, the circuit breaker will operate less than...

High Voltage Testing with AC Power Frequency

High Voltage, Inc. is a small design and manufacturing company located in the Hudson Valley region of New York State. Although small, we are a large presence in the electrical test equipment industry with a representative organization covering most of the world and a highly respected product line...

Detect Electrical Discharge Defects with Ultrasound

Electrical discharge is more common than we’d like to believe; even in new installations. Detecting these defects poses a serious challenge, particularly at an early stage when there is still time to initiate corrective actions. Vigilant technologies help reduce the risk of arc flash...
Home HV Testing

HV Testing

Solving Underground Cable Problems with Partial Discharge Testing

How to prevent failure with partial discharge testing

BY HENNING OETJEN, Megger

Partial discharge (PD) measurements are increasingly used as a reliable and non-destructive diagnostic method to detect weak spots in the insulation of underground cables. Routinely, partial discharge measurements are utilized in laboratories for testing cable reels prior to commissioning and in the field to verify installation quality.

Typically, many factory-testing standards require that workers use a 50/60 hertz (Hz) high-voltage...

HV Test Equipment Articles

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T&D Buyer’s Guide Companies

HV Testing Videos

PFT Series Product Training

SDT340 Ultrasound Data Collector

Bearing Toolbox for Advanced Bearing Failure Analysis

HV Testing Products

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

SDT340 Multifunctional Data Collector

PT16F Series

HV Testing Shared Media

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Very Low Frequency Ac Hipot Test Sets - Vlf Series&E-Series Product Catalog

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Electrical Maintenance Handbook, Vol. 10

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High Voltage, Inc. Product Catalog