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  1. martechman

    ANSI C37.41 loadbreak

    Can someone give me quidance on the specifications of ANSI C37.41 clause 7 as regards loadbreaking requirements. Being in the UK we work to IEC specs.
  2. martechman

    145kV ferroresonance

    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?
  3. martechman

    Testing of 433V main power panels

    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.
  4. martechman

    Zone 2 dust enclosures

    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?
  5. martechman

    Could anyone advise about a manufac

    MartechMan 415volt Form 4 Type 7 switchboards available from LV@MORRISLINE.CO.UK

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