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manir_b4u2002
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India - Member - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Feb 2009
Posts: 38

OLTC Drives

02/17/2009 12:50 AM

I m working in 220kv/33kv substation in SAIL,IISCO steel plant ,India.we have 4 nos 100mva transformer.Can anyone describe the principle operation of OLTC drive?
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elect-ok
Power-User

Join Date: Sep 2008
Location: Jakarta, Indonesia
Posts: 104
#1

Re: SUBSTATION

02/17/2009 1:34 AM

check in this thread below :

http://cr4.globalspec.com/thread/32057/Transformer-Taps-OLTC
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V.I.Abraham
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Safety - ESD - New Member India - Member - New Member Engineering Fields - Energy Engineering - New Member

Join Date: May 2007
Location: Pune , India
Posts: 875
Good Answers: 42
#2

Re: SUBSTATION

02/17/2009 8:21 AM

OLTC is On Load Tap Changer. Please read the link below

http://en.wikipedia.org/wiki/Tap_(transformer)

If you have any further doubts after reading please ask.
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Anonymous Poster
#3

Re: OLTC Drives

02/17/2009 9:44 AM

Are these OLTC motor drives?
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myn1996
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Join Date: Jan 2009
Posts: 62
Good Answers: 4
#4

Re: OLTC Drives

02/17/2009 4:57 PM

Are you asking about the OLTC operation principle or its drive?

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Anonymous Poster
#5
In reply to #4

Re: OLTC Drives

02/18/2009 12:00 AM

Dear Sir,

The On Load Tap Changer will be driven by a 3 phase Induction Motor. The tap changing will be effected by this motor.

Raise/ Lowering the Tap is effected.

Best Regards,

N.Suresh
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