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  • Users: jefferslot
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  1. jefferslot

    BVP22 OCB retrofit

    Anyone know of a spare BVP22 housing. We have developed a vacuum retrofit circuit breaker to replace the GEC OCB but require a unit to perform thermal rise tests
  2. jefferslot

    SUBSTATION EARTHING

    An industrial cement factory currently takes a supply at 415V 300KVA source (Utility). The existing Earth bonding at the site is substantial and the safety earth is about 0.3ohms. the owner has now obtained a 1000KVA power transformer ratio 11000/433V with %Z of 4.75%. The utility will shortly...

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