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- Windsor, CO NEC: 2017
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- Service Manager
Do small VFDs (under 100A) typically feature 60? terminals?
Terminal Ratings of Typical VFDs
- Thread starter George Stolz
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- Status
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
99% of VFDs are rated for use in 40?C, with a maximum of 50?C, so it's possible that some don't bother using terminals rated for over 60?C. Allen Bradley Powerflex drives happen to have 90?C rated terminals, but I would not assume that as a standard by which the the industry adheres.
A quick survey of manuals I happen to have:
AB = 90?C
ABB = 75?C
Teco = 60?C
Hitachi = 60?C
Toshiba = 75?C
Yaskawa = 75?C
So they appear to be all over the map, but it looks like the cheaper versions use cheaper components. Go figure.
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