| 110 % overload
Bill Arthur,
Is the post on load testing accurate. 110% overload or was the machine run at 110%. Was it diesel or turbine. I witnessed, but was not apart of a load test that the load bank operator took a 48 KW machine to 100% overload for about an hour. The machine was stamped 90KW, but when the machine was fit up and wired single phase the installer did not derate the KW for the application. A 90 KW 480/240 three phase machine derates to 48 KW in a single phase wiring configuration. The electrical end caught on fire. Short duration fire, but fire was coming from the windings. The mismatch of the electrical end to the hp allowed this to occur. Normally you take a machine much above 130% and it stalls the diesel and or it bogs down. The interesting thing about a generator is that I can get 100KW out of a 5KW end if I can keep the winding cooled and I have enough HP.
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