Technical library

The subject 69 kV bushings are installed on a 10 MVA, 69/13.09 kV Dyn1 two-winding transformer. After completing on-load tap changer (OLTC) maintenance on this 1969-vintage transformer, the utility owner followed with electrical tests.

A 21st century trend in electrical instrumentation has leaned toward smaller, lighter and easier to manipulate testers through microcircuitry. Being portable and easy to manipulate can be beneficial enough, but there’s much more to it. Size reduction is not just for ease of manufacturing or an advertising gimmick. Multiple instruments can be combined into a single handheld tester, so that an entire job can be completed with a single piece of test equipment. The user can benefit from notable cost savings and job improvement. This article will examine how many of the functions found in multiple different instruments can be included in just one handheld tester.

The Megger IDAX322 is operated by an easy-to-use software with assessment guidance informed by international standards and over 25 years of field experience with DFR technology.

Electrical maintenance departments are often faced with the challenge of performing different tests on instrument transformers according to official standards and within a limited shutdown time. This is made even more difficult when multiple instruments are needed to perform all the required tests.

Both natural and man-made drivers are spurring not only technological growth but are changing the nature of the electric grid. Concerns over global warming are only being compounded by the continuing billion dollar weather events. This is acting as a catalyst for the green reform and being realized in the growth of distributed generation (DG).

Reducing the risk of failure on high voltage instrument transformers in the transmission system using the application of narrowband dielectric frequency response (NB DFR) on HV CVTs.

Electric motors are made up several of components that when combined and assembled into a motor have to endure extreme electrical and mechanical operating stress as well as varying environmental conditions during their service life. To prevent premature failure, regular testing with corrective action is necessary to ensure reliable operation and, importantly, to extend the motor’s service life. Electrical testing usually consists of Insulation Resistance tests (Meg Ohm MΩ) and a Low Resistance tests

STX40 Operating Software update file

Software download files for PAT300/400

Software to download test results from MIT330, MIT430, MIT485, MIT400-2 and MIT2500 test instruments.