What HP justifies 13.2kV Rating?
What HP justifies 13.2kV Rating?
(OP)
A customer is currently in the process of starting up a new 4000V rated 8000Hp compressor. He is considering something in the 8000-10000 Hp range for another new facility. Should he go to a higher voltage for that size? If so which? Are there many motor shops (this is in the US) that can handle motors over 4000V? Are higher voltage rated motors as reliable as 4000V?





RE: What HP justifies 13.2kV Rating?
Mike
PS Also, I don't believe there is any difference in reliability between one voltage or another.
RE: What HP justifies 13.2kV Rating?
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RE: What HP justifies 13.2kV Rating?
RE: What HP justifies 13.2kV Rating?
RE: What HP justifies 13.2kV Rating?
Of course the greatest influence is the distribution system and what capacity already exists.
As to windings and voltages, look at the manufacturers experience lists and you will find the main suppliers will have years of experience at this voltage and this output. With regard to the winding types, the VPI system is used by all the major manufacturers and has well documented benefits and leads to a more reliable insulation system - I agree with Mendit that it requires process control, but this shouldnt be a problem if reputable a manufacturers is selected. There are plenty around: GE, ABB, WEG, Alstom would easily do this type of machine and larger.
In terms of reliability, we see many failed motors each year and the majoriry of failures are more due to abuse or poor maintenance than design or manufacturing error. I suggest that you always select a totally enclosed machine, TEWAC or TEEAC and fit appropriate condition monitoring and a regular maintenance regime.