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Forces on DS terminals in HV substations

Forces on DS terminals in HV substations

Forces on DS terminals in HV substations

(OP)
In IEC world, a 220 kV SS with a single bus configuration, I want to cross under the station busbar with AL tube supported by disconnctors of two feeders opposite sides of the bus.

I did a SC forces calculations and it seems the dynamic forces due to short circuit current exceed manufacturer's recommendation.



I am a bit confused with the term : cross load Fb? I got a dynamic force of 988 N with both sides simple supported (sliding connector), it seems a bit marginal tho!

Any clue?

RE: Forces on DS terminals in HV substations

I think "cross load" is lateral load.

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