by Michelle Osborne | Jul 14, 2026 | HV, Partial Discharge Testing
Accurate Partial Discharge Measurements Begin with Proper Calibration Partial discharge (PD) testing plays a critical role in evaluating the condition of high-voltage insulation systems. From transformers and power cables to rotating machines and switchgear, detecting...
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 Michelle Osborne | Nov 18, 2025 | HV, Impulse Testing, Instrument Transformer Testing
When insulation systems, transformers, or cables are stressed with impulses, you don’t want guesswork; you want clarity. Enter the Haefely HiAS 744, a cutting-edge impulse analyzing system designed to capture, analyze, and make sense of high voltage phenomena with...
by Michelle Osborne | Oct 13, 2025 | HV, Instrument Transformer Testing, Transformer Testing
Transformers serve as critical components in electrical power systems, and their operational integrity is essential for maintaining uninterrupted service across residential, commercial, and industrial sectors. Failures in transformer units can result in significant...
by Michelle Osborne | Mar 19, 2025 | HV, Impulse Testing
Electrical power engineers must reduce the number of outages and preserve the continuity of service and electrical supply. Therefore, they must focus on protecting electrical apparatus and systems from the main cause of overvoltage conditions, particularly from...
