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meaning of bay 3

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veronica19978

Electrical
Joined
Sep 11, 2008
Messages
7
Location
AU
Hi,
Can someone tell me what does bay means in power system?eg:110KV bay?Thanks in advance.
 
The word "bay" is used to describe a closed or open cubicle where electrical equipment is placed. I guess that the ethymology is bay=harbour, protection, "where to put things".

There are small bays, containing a water filter or control gear and there are larger bays aka cubicles. These tend to be closed. There are open or closed bays for power distribution and motor starters etcetera, often called "panels". These are usually placed under a roof or inside a building. Then, there are open-air bays like those you see in a switchyard. There, you find transformer bays (often concrete cells to keep oil and debris from flying all over the place), breaker bays, incoming and outgoing bays where transmission lines "land" and "start".

I haven't found any narrow meaning of the word. It is used in many ways. I think sometimes even as a synonym to "booth".

Gunnar Englund
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
 
In substation parlance it usually describes a circuit breaker with its associated disconnectors, earth switches, instrument transformers and protection equipment. A substation would thus be comprised of a number of such bays, connected by busbars.


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A bay can also be the bus and equipment between two breakers in a ring bus or breaker and a half (Other types can also apply).
A transformer bay, or line terminal bay, and capacitor bank bay.
 
I have heard it used the way Scotty described it

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The word 'bay' is commonly used in S&C switchgear to denote a separate section or cubicle in a switchboard lineup.
 
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