What is meant by ferroresonance on 145 kV air break disconnectors and what is done to limit it? Also what is meant by busbar switching capability on the same thing?
433 volt is the old UK standard for the secondary of a distribution transformer. Therefore I assume the panels has been supplied to IEC 60439 and this can used as a bsis for your type tests.
We have to supply some control stations to a steelworks. The contractor has asked for Zone 2 Dust enclosures.
We would normally supply IP54 enclosures. Are these the same?