Previous in Forum: For 400V, 2.5 MVA Transformer, Fault Level   Next in Forum: Vacuum Sealing of a Furnace
Close
Close
Close
4 comments
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 ?

Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21011
Good Answers: 783
#1

Re: Transformer Busduct

09/27/2014 12:40 PM

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

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Reply
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 8778
Good Answers: 376
#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.

__________________
jack of all trades
Reply
Guru

Join Date: Feb 2008
Location: Large hole formally occupied by furry woodland creature.
Posts: 3385
Good Answers: 97
#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.

__________________
CRTL-Z
Reply
Guru

Join Date: Dec 2010
Posts: 1628
Good Answers: 111
#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.

Reply
Reply to Forum Thread 4 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Copy to Clipboard

Users who posted comments:

67model (1); jack of all trades (1); Tornado (1); Unredundant (1)

Previous in Forum: For 400V, 2.5 MVA Transformer, Fault Level   Next in Forum: Vacuum Sealing of a Furnace

Advertisement