Why are utilities moving from go/no-go hipot to diagnostic Tan Delta?
Utilities are moving from traditional go/no-go hipot tests to VLF-based Tan Delta diagnostics because Tan...
June 12, 2026
How can you integrate hipot withstand testing into a 48-hour substation shutdown?
A 48-hour substation shutdown can safely include hipot withstand testing if you lock in scope,...
What is partial discharge under IEC 60270 in hipot testing?
Measuring partial discharge (PD) during hipot tests ensures you detect insulation defects before they grow...
What are OSHA requirements for HV testing qualified workers?
OSHA requires that high voltage (HV) testing be performed only by qualified electrical workers who...
Is your grid-ready transformer testing strategy aligned with the NERC Level 3 Alert?
The new NERC Level 3 Alert on data center loads exposes how sudden, customer‑initiated load...
What is ASTM D149 dielectric strength testing for solid insulation?
ASTM D149 dielectric strength testing defines how to measure breakdown voltage and dielectric strength of...
Is IEC 60156 oil breakdown testing the key to reliable high-voltage withstand?
IEC 60156 defines how to measure the dielectric breakdown voltage of insulating liquids so engineers...
How should you calculate safe hipot test voltage with the 2V + 1000 rule?
A practical way to calculate hipot test voltage for new assets is to start from...
What is calibration traceability for high-voltage sources?
A Hipot tester’s display is only as trustworthy as the high‑voltage source and volt‑meter behind...
How can manufacturers archive withstand test results to prove compliance?
Archiving withstand (hipot) test records means creating a tamper‑proof, traceable trail from each tested unit...