Which is a better option insulation class F Temp rise B or H/F
Which is a better option insulation class F Temp rise B or H/F
(OP)
Recently we are working on procurement of new Gas Turbine driven generator. One of the vendor has quoted insulation class H and temperature rise B while others have quoted F/B. We are currently using machines with F/B and donot have any prior experience of H/F. Please let me know if there are any benefits of using H/F over F/B.





RE: Which is a better option insulation class F Temp rise B or H/F
RE: Which is a better option insulation class F Temp rise B or H/F
Generally I would prefer to keep the machine cool through basic design rather than design it run hot and then insulate it to cope with the higher temperature. Getting heat out is always a problem, therefore the class B rise would be my preference. I assume the rating applies to both the rotor and stator?
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If we learn from our mistakes I'm getting a great education!
RE: Which is a better option insulation class F Temp rise B or H/F
RE: Which is a better option insulation class F Temp rise B or H/F
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If we learn from our mistakes I'm getting a great education!
RE: Which is a better option insulation class F Temp rise B or H/F
The class H with B rise has more thermal margin than the class F with B rise.
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RE: Which is a better option insulation class F Temp rise B or H/F
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Eng-tips forums: The best place on the web for engineering discussions.
RE: Which is a better option insulation class F Temp rise B or H/F
We are thinking to go for H/F. If it serves our purpose, why pay more.
RE: Which is a better option insulation class F Temp rise B or H/F
I wouldn't sanction an H/F machine. Too little field experience in the long term of this insulation system and temperature rise: manufacturers won't get to use one of my projects as a test bed for their products.
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If we learn from our mistakes I'm getting a great education!