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vs rathore
Active Contributor

Join Date: Jun 2008
Posts: 10

OLTC

06/22/2008 5:06 AM

Hi All,

1.Why people are scared of operating the on load tap chager?

2.What needs to be done to allay fears?

Plz let me know your perception

vs rathore
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Sparkstation
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New Zealand - Member - Interested in everything- see my Profile please APIX Pilot Plant Design Project - Member - Member Engineering Fields - Electrical Engineering - Member Engineering Fields - Power Engineering - Member Engineering Fields - Civil Engineering - Member Hobbies - Musician - Autoharp and Harmonica Hobbies - Hunting - Member Hobbies - Fishing - Member

Join Date: Nov 2007
Location: Christchurch, (The Garden City), South Island, New Zealand
Posts: 4395
Good Answers: 230
#1

Re: OLTC

06/22/2008 2:22 PM

Hello vs rathore

Are these Class or Homework Questions?

I'm not afraid of operating on-load tap-changers.

These automatically work many times each day, in their hundreds of millions of installations, right around the world, without any bother at all.

Reply with

Kind Regards....

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vermin
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Join Date: Jul 2006
Location: Silicon Valley
Posts: 5356
Good Answers: 50
#2
In reply to #1

Re: OLTC

06/23/2008 3:45 AM

Is he talking about Ungbang, the god of load tap chagers versus Rathore, the god of imaculate grounding?! Woof!!! If so, my money is on Unbang!!!

I'll be down in my bunker until this all blows over!!!

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Bill H.
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Join Date: May 2007
Location: Hurst, Texas
Posts: 178
Good Answers: 4
#3

Re: OLTC

06/23/2008 3:57 PM

If you are refering to changing a tap on a transformer to adjust for variations, there is good cause for fear.

If one gets lucky and switches at or near 0 volts, not much happens. However, if the circuit is broken at peak voltage, arc flash can be second only to a lightning bolt striking in intensity and devastation.

If there are electronic controls and switching behind adequate sheilding, there is not much to fear as the switch will occur at 0 volts.

More info is need to properly assess your particular question.

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