HV Test Equipment

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…
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Latest Electrical Industry News

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Dielectric Voltage Testing – Standard Methods

There are two standard methods from ASTM International: D877, Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes, and D1816, Standard…
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Power Factor Testing of Circuit Breakers

Detecting contamination and deterioration in SF6 breakers to ensure longevity BY LINDA NOWAK, Doble Engineering Company The purpose of “Doble testing”, or power factor testing,…
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Line Leakage Testing: Is It Right For Your Application

The Line Leakage test (LLT for short) is most often specified to be performed as a type test in a design or engineering laboratory or…
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Dynamic Resistance Measurement

Condition testing of circuit breaker’s arcing contacts BY BUDO MILOVIC, DV-Power The preventive maintenance on a high-voltage (HV) breaker consists of several routine tests. The…
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Why Net-Zero is Cheaper for the UK

The United Kingdom has set an ambitious target to achieve net-zero greenhouse gas emissions by 2050. This goal necessitates a comprehensive transformation of various sectors,…
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IR Inspection Windows for Electrical System Reliability

An Infrared Inspection Window is used to separate environments of differing pressures or temperatures while allowing light energy at a specified electromagnetic wavelength to pass…
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The Role of Thermal Imagining in Today’s Electrical Utilities Sector

In today’s society we are faced with many obstacles, one of these obstacles is the high cost of electricity around the world.  Electricity prices for…
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HV Test Equipment Articles

Transformer Diagnostic Testing

Transformer Diagnostic Testing

Transformer diagnostic testing: standards to diagnose equipment with Sweep Frequency Response analysis BY VOLNEY NARANJO,…
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ACCELERATING TOWARDS GREATER TESTING EFFICIENCY - A true transformer test van

ACCELERATING TOWARDS GREATER TESTING EFFICIENCY - A true transformer test van

Test lead management, including quality of connection and correct lead placement, is an important part of…
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FERC Complaint Targets Duke, PJM Transmission Planning

FERC Complaint Targets Duke, PJM Transmission Planning

A coalition of large energy consumers and ratepayer advocates has filed a complaint with the…
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High Voltage Testing with AC Power Frequency

High Voltage Testing with AC Power Frequency

High Voltage, Inc. is a small design and manufacturing company located in the Hudson Valley…
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Safe Work Verified Through Data Logging Technology

Safe Work Verified Through Data Logging Technology

On Distribution, Transmission or Substation equipment, testing for presence or absence of nominal voltage is…
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