by Michelle Osborne | May 27, 2026 | HV, Substation Testing
In high voltage testing environments, precision is critical. Even minor inaccuracies in AC/DC measurement can impact testing reliability, equipment validation, compliance reporting, and overall operational safety. As testing requirements continue to evolve across...
by Dominique | Dec 23, 2021 | Substation Testing, Tan Delta / Power Factor Testing, Transformer Testing
The MIDAS micro 2883 is a revolutionary Power Factor / Dissipation Factor, and Capacitance tester used to test the insulation of high-voltage components. This compact and portable device quickly evaluates the losses of electrical insulation in: Power transformers...
by Dominique | Oct 19, 2021 | Substation Testing, Transformer Testing
The Winding Analyzer 2293 is an automatic winding resistance analyzer optimized to perform routine and maintenance tests on three phase power and distribution transformers. The 2293 can perform both winding resistance and transformer turns ratio (TTR) tests without...
by Dominique | Jan 28, 2021 | Substation Testing, Tan Delta / Power Factor Testing, Transformer Testing
A large percentage of electrical apparatus failures are due to the deteriorated condition of the insulation. Many of these failures can be anticipated by conducting routine testing and timely maintenance. Changes in the normal capacitance of insulation indicate...
by Dominique | Apr 29, 2020 | Substation Testing, Transformer Testing
Winding resistance measurements taken on transformers are essential for type, routine, and field testing. The measurements provide information of conductor losses, winding temperature at the end of a temperature test cycle, and provide a simple diagnostic tool for...
by Dominique | Mar 20, 2020 | Substation Testing, Transformer Testing
From the first day of use, transformers are subject to thermal and mechanical stresses, foreign particle ingress, and variations in temperature and humidity. HV TECHNOLOGIES, Inc. offers the top tier range of portable instruments from Haefely / Tettex for testing...
