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Anonymous Poster

ISOLATED PHASE BUSDUCT

04/01/2008 2:32 AM

WHAT IS THE DIFFERENCE BETWEEN SEGERATED AND NONSEGERATED BUS DUCT?
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j_kamal
Associate
Engineering Fields - Energy Engineering - New Member India - Member - Jack of all trades

Join Date: Jan 2008
Location: India
Posts: 43
Good Answers: 2
#1

Re: ISOLATED PHASE BUSDUCT

04/01/2008 4:30 AM

Hello guest,

A.

Non-segregated phase bus duct is available for voltages

ranging from 600 volts through 38kV, with ratings up to 8000

amps. The duct has all phase conductors in a common enclosure

with air space between phases. There are no metallic barriers

between phase conductors of adjacent points. Conductors

may be mounted on custom-molded, fiberglass-reinforced

polyester blocks or on post insulators. Enclosures that are totally

enclosed are preferred, but ventilated areas can be provided

in indoor applications. Typical applications include connections

between transformers and switchgear, tie connections

between motor control centres and large motors, and as the

main generator lead for small generators.

B.

Segregated phase bus duct is available for voltages ranging

from 600 volts through 38kV, with ratings up to 8000 amps.

Segregated phase bus has all phase conductors in a common

enclosure with metal barriers between adjacent phases.

Conductors may be mounted on molded, fiberglass-polyester

blocks or on post insulators. This design is primarily used as a

generator lead in power plants, but it is also used in heavy

industrial applications and as a switchgear tie in metal-enclosed

substations.

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sj
Active Contributor

Join Date: Mar 2008
Posts: 10
#5
In reply to #1

Re: ISOLATED PHASE BUSDUCT

04/02/2008 4:34 AM

ISOLATED PHASE busduct are generally used for the power plants ( generator to generator transformer connections ). In isolated phase busducts, each phase has separate enclosures ( non magnetic ) and thus the name isolated phase bus ducts.

In non-segregated and segregated busducts - all the phases are in a common enclosure without separation between phases and with separation between phases respectively. Used for connections in MV and LV distribution system.
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Anonymous Poster
#7
In reply to #1

Re: ISOLATED PHASE BUSDUCT

07/10/2008 1:54 AM

Above reply is correct.

SP Rajput
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M_Okta
Participant

Join Date: Nov 2012
Posts: 1
#9
In reply to #1

Re: ISOLATED PHASE BUSDUCT

11/26/2012 9:28 PM

sir, could you tell me about definition and aplication busduct?I don't know about aplication when we chose segregated and nonsegragated busduct?

thank you sir
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Anonymous Poster
#2

Re: ISOLATED PHASE BUSDUCT

04/01/2008 10:09 AM

WHAT IS THE DIFFERENCE BETWEEN SEGERATED AND NONSEGERATED BUS DUCT?

SEGERATED:Phase conductors mounted on insulators in seperate enclosurs

NONSEGERATED :All Phase conductors in the same enclosure but seperated by insulated barriers or air
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biswanath.das
Power-User

Join Date: Oct 2006
Location: Kolkata, India
Posts: 447
#3

Re: ISOLATED PHASE BUSDUCT

04/02/2008 12:43 AM

Mr J_kamal,

I afraid non segregated bus duct is used only upto LV voltage 415/480 etc level. Segregated from 3.3kV upto 33kV. Isolated 33kV and above. Please check.

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j_kamal
Associate
Engineering Fields - Energy Engineering - New Member India - Member - Jack of all trades

Join Date: Jan 2008
Location: India
Posts: 43
Good Answers: 2
#4
In reply to #3

Re: ISOLATED PHASE BUSDUCT

04/02/2008 1:17 AM

Mr. Das,

Both segregated and non-segregated bus duct configurations can be used for the voltage levels that I mentioned in my reply. The manufacturing practices differ from one country to another. Yup, in India we do prefer non-segregated bus duct for LV.

Kind regards,

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zhanglie
Member

Join Date: May 2008
Posts: 5
#6
In reply to #4

Re: ISOLATED PHASE BUSDUCT

05/09/2008 4:44 AM

you can e-mail to me, zhanglie@hotmail.com, i know the IPB/SPB/NSPB.
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Anonymous Poster
#8
In reply to #4

Re: ISOLATED PHASE BUSDUCT

10/16/2008 3:14 PM

What is the benefit in using IPBD in large generators over either of the two other types of bus duct? It seems as though the magnetic field (even with non mag material such as stainless) would be so high (with generator currents in the 12k to 14k range or higher) that heating would be a major problem.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#10

Re: ISOLATED PHASE BUSDUCT

03/14/2024 4:24 AM

Easy. The presence of the segregation.

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