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  • Users: HydroChuck
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  1. HydroChuck

    MCC hot bus bars

    We discovered two out of three riser bus bars (600 Amp) had lose bolts to the main bus (1200 Amp). The joint evidently was hot enough that the MCC skin was too hot to touch. The result is discolored copper in the small area where two bolts join each riser to the main bus. The only load...
  2. HydroChuck

    TNT equivalent for energy released in electrical fault

    Can anyone advise a simple relationship between the energy released in an electrical fault and the equivalent TNT explosive force? For a specific example: if a 1,500 kVA transformer primary voltage 11 kV, has a fault which is cleared in 1 second, and the worst case fault current is 27. kAmps...

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