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Gardian Generator transfers while doing whisper test

I have a 18KV standby generator and now the generator transfers to the generator when it is doing the whisper test, this is very bad, because it runs on half speed, so it acts like a brownout and it damaged four batteries in two UPS'es. Do you know how to handle that.

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How does it do for RPM's with light load? Try turning off some load so when it transfers, you can see if you're overloading it. To much load could bring down the speed drastically. If it holds speed with 3/4 load, that's probably the problem. If not, try half load. You need to match the load watts to the Gen KW.

Posted on Jul 02, 2009

  • Hans Huber
    Hans Huber Aug 13, 2012

    I had a technician out and he found that the circuit board was bad and it was caused by a short to ground on the sensing line.


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