Tom, any way to test the output from the genset before the transfer switch?
Kinda sounds like you found the problem with the power cutting off for 50 seconds, just have to find what's causing it. If genset regulator is putting out high or low voltage or fluctuating frequency then the transfer switch is doing it's job.
Doesn't the genset blower get voltage directly from the genset? Might be able to check voltage/frequency there.
Good luck.
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