How to Fix High or Low 3 Phase Alternator Voltage Problem? How to pinpoint a voltage problem?
You can fix and diagnose a problem with an alternator with careful diagnosis, using a multi-meter and / or an insulation tester, like a Megger.
In order to perform theses tests you should ensure you are electrically competent to do so, ideally having passed a current electrical testing qualification in your country. We have instructions on how to diagnose and fix different common problems. These instructions are generic and should always be undertaken in accordance with your alternators operation manual.
380-415V, 3 Phase, High / Low Voltage Off Load