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Anonymous Poster #1

Transformer Busduct

09/27/2014 7:14 AM

What are the problems that may be encountered if we run 11KV, 2600A Bus duct in the underground in an oil and gas refinery from outdoor TR to indoor Switchgear ?

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#1

Re: Transformer Busduct

09/27/2014 12:40 PM

Accumulation of either water or flammable vapors in a low-lying space.

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#2

Re: Transformer Busduct

09/28/2014 2:53 PM

Inadvertent transfer of heavier than air flammable gasses from the hazardous area to the safe area.

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#3

Re: Transformer Busduct

09/29/2014 3:21 PM

Conforming to the regulations for Class 1 Division 1 might be considered a "problem"

If life is considered "Cheap".

There are additional regulations for passage from outdoor to indoor as you describe.

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#4

Re: Transformer Busduct

05/18/2021 2:21 PM

Entry of flammables/water already mentioned by other Posters to bus duct where flashover occurs possibly causing explosion/loss of service/life.

Condensation within a "sealed" bus duct can lead to flash-over, unless there are drying agents or enough heat to keep humidity low - not clear if transfo/busbar carries high LV current or is standby.

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