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I need a wiring diagram for a Petbow generator 15kva 3ph Model PS-312/FMS

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  • Richard Millburn Aug 02, 2013

    The problem I am facing at present and the reason I need a wiring diagram for the Petbow Generator arose when a friend who is a farmer in a remote area, purcahsed the Generating plant at a sale. When he took it home, he couldn't get any sense out of the voltages he was generating and called an electrician who checked it out and concluded that one of the phases is running at 100Hz. ( Australia uses 50Hz as the standard frequency). My mate has asked me to look at it, but my expertise is with transformers, and I have little knowledge of Generators other than what I learnt in my Trades Course in the late 1960's.

  • Richard Millburn Aug 02, 2013

    Looks like I shouldn't have pressed Enter to start a new paragraph. I am travelling down to my mate's farm in a couple of weeks, and my suspicion is that there is a wrong winding connection. As the machine runs at 1500rpm, I believe it must be 4 pole. to produce the rated voltage, the coils must pass the poles so that there is one pair of coils at each opposing pole. Am I on the right track ? somehow, I am thinking that two pairs of poles are passing the pair of poles, and that has been caused by connecting the coils incorrectly, and hence my need for a wiring diagram. I emailed the company which purchased Petbow Generators in 1990, but they have come back with a statement that they have no info on the generator at all. Without a diagram, I will need to map the winding coils and stator winding and see if something stands out as incorrect. I may need to get more help after that. Luckily he now has the Internet available. Any ideas would be a great help. Regards Richard



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