5085-3/CSA No66.3 scoped only where class 2 or 3 stuff is required, and
generally not considered for industrial environment where the secondary circuit
not exposed. Other than Class 2 would be scoped by UL1012 and CSA107.1.
For industrial control transformers, the scoped standard would probably
I'd restate Dave's case below to say: PE's are really only required for
Public Sector work. Industrial/commercial products are certified (where
necessary) by NRTL testing, and - as Brian has noted - by application of
CEC/NEC. Brian Kunde's situation appears to be that NEC and CEC have
confli
In message
<2313bb439627e348a579b7b3f41d9c143d364...@newcastle.creare.com>, dated
Mon, 30 Mar 2015, Bob LaFrance writes:
Inrush current is a function of source voltage as well as transformer
characteristics as previously mentioned in thread.
Naturally.
Input side impedance can also play a
Greetings,
Interesting thread. I normally design SMPS, but went through this exercise a
few months back with a 15kVA transformer.
RK5 class fuses seem to me to be able to handle large inrush that a
transformer will source. Thermal circuit breakers are slow to respond and may
provide the del
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