One thing could make a huge difference when it comes to transformer integrity, and that is 1Hz. This episode looks into how 1Hz can be used to give you ultimate confidence when testing transformers.
For more: • Megger 1 Hz I One test makes a big difference
00:00 Intro
00:43 Power up questions
02:08 Changes in transformers
03:57 Looking towards the future
05:17 On and offline testing changes
06:30 Why has line frequency power factor not changed?
07:41 Why is 1Hz a mystery?
09:22 What effect has it had on HV equipment?
11:43 More information
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