Electricity Forum Intelligent Power Today Magazine Arc Flash Clothing
Electricity Today T&D Magazine
Archives

HV Test Equipment

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...
Transformer Testing

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 Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes. VDE stands...

The Dissolved Gas Analysis Toolkit

Dissolved gas analysis: addressing the challenges of collecting samples BY DONAL SKELLY, GE’s Digital Energy business Dissolved gas analysis (DGA) is a technique for identifying and quantifying the gas formed in oil-filled electrical equipment because of either the natural aging of oil and paper...
Home HV Testing

HV Testing

Transformer Diagnostic Testing

Transformer diagnostic testing: standards to diagnose equipment with Sweep Frequency Response analysis

BY VOLNEY NARANJO, Megger

Sweep Frequency Response Analysis (SFRA) has become a powerful tool in advanced power transformer assessments and probably one of the main and first tools used to diagnose troubled transformers or as a regular maintenance test. In addition to being able to detect problems related to the mechanical or electrical integrity of the transformer, the results can be compared to...

HV Test Equipment Articles

ultrasound equipment

T&D Buyer’s Guide Companies

HV Testing Videos

Bearing Toolbox for Advanced Bearing Failure Analysis

ULTRAChecker for Operator Driven Reliability

ON-GUARD Automated Lubrication System

HV Testing Products

AEMC 1045 Handheld Insulation Resistance Tester

T39 Series

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

HV Testing Shared Media

Catalog

Electrical Equipment Testing & Maintenance Vol. 6

Catalog

Electrical Testing & Maintenance Handbook Volume 5

Brochure

SDT Products and solutions