india -voltage levels

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Anonymous Poster	india -voltage levels 02/24/2008 3:13 AM
	Voltage levels in india are maitained at 220 kv,132kv (in transmission ),66,33,11,6.6,3.3kv (inn distribution level) .........all these are multiplies of factor 11. and my Q is why these are maitained as factors of 11 . Explain me with ur ans plz?//////////
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Sparkstation Guru Join Date: Nov 2007 Location: Christchurch, (The Garden City), South Island, New Zealand Posts: 4395 Good Answers: 230	#1 Re: india -voltage levels 02/24/2008 3:41 AM
	Hello Guest, The reason for your Voltages/frequency in India is simple: The original Electrical Supply was set up by Companies from England, who supplied Alternators, Turbines, Transformers, Pylon Transmission Tower lines and more. If you go to Russia, the voltages/frequency are different. Likewise France, US and so on. Whoever got there first, and installed electrical equipment, obtained it from their favourite supplier/Country. I'm sure you appreciate with extensive infrastructure now in place, it is difficult to change, and in most cases, entirely unnecessary to change the existing situation. Kind Regards.... __________________ "The number of inventions increases faster than the need for them at the time" - SparkY
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sb Guru Join Date: Mar 2007 Posts: 2550 Good Answers: 103	#8 In reply to #1 Re: india -voltage levels 02/16/2009 3:00 AM
	welcome sparky long time no see ? Lot of people missing the spark of the life. __________________ Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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arihan007 Participant Join Date: Nov 2007 Posts: 3	#2 Re: india -voltage levels 02/24/2008 4:35 AM
	Can anybody give a better answer for this..
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Hendrik Guru Join Date: Jan 2007 Location: Centurion, South Africa Posts: 3921 Good Answers: 97	#5 In reply to #2 Re: india -voltage levels 02/25/2008 3:33 AM
	One could always state that Queen Victoria or King George made the rule because it was the only way the population could be controlled. It should also be stated that any enquiry will be considered high (voltage) treason. This should take care of the evident conspiracy theory. Why was it done? - "For no reason at all" - Forest Gump __________________ Never do today what you can put of until tomorrow - Student motto
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Anonymous Poster	#9 In reply to #2 Re: india -voltage levels 02/27/2009 6:59 AM
	They are classified in to Four types UHV-700KV,400KV EHV 220KV,132KV,MV 66KV,33KV and LV 11KV 6.6 KV 440V and 230V
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charlie_r Power-User Join Date: May 2007 Location: 39°10' N 91°52' W Posts: 237 Good Answers: 15	#3 Re: india -voltage levels 02/24/2008 6:55 AM
	This question comes up roughly every 6 months, and I suspect that it is an assignment at an engineering school...... However, if you search the forums, you will find several long discussions about this very topic. __________________ If you don't have time to do it right the first time, when are you going to have time to do it over?
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Anonymous Poster	#4 Re: india -voltage levels 02/24/2008 12:45 PM
	voltage levels in India at present are 400KV,220KV,132KV,66, 33,11,6.6 3.3KV.APART FROM THIS IN TAMILNADU THEY USE 110KVAND 230KV ALSO 22KV PARTLY.TAMILNADU IS THE ONLY STATE STILL USING DELTA STAR TRANSFORMERS IN THE SUBSTATIONS ALL OTHERS USE STAR/STAR.AS REGARDS THE MULTIPLES OF 11 PL REFER EARLIER THREADS .
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biswanath.das Power-User Join Date: Oct 2006 Location: Kolkata, India Posts: 447	#6 In reply to #4 Re: india -voltage levels 02/25/2008 7:41 AM
	I think there are some technical reasons of Alternator design and manufacturing. I studied this in past but dont remember now. Anyone can explore this aspect, is welcome. __________________ BNDas
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Anonymous Poster	#10 Re: india -voltage levels 05/21/2009 1:47 PM
	it is bekoz form factor of sinusodial ac wave form is 1.11, rms value=1.11*avg value thats why the result comes as a multiple of 1.11. vidya college of engg meerut
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dhayanandhan Guru Join Date: May 2008 Location: CHENNAI, TAMIL NADU, INDIA. Posts: 1851 Good Answers: 65	#11 Re: india -voltage levels 03/17/2011 1:09 PM
	Dear Anonymous Poster, The Answer is simple. If you take and refer the Standard Electrical Engineering Text Books, the derivation of EMF Equation, rms value is involved and in the derivation a factor of 1.1 is involved or deduced. For Example, the Text Book - ELECTRICAL TECHNOLOGY by H.C. COTTON, Prof. LONDON UNIVERSITY, FUNDAMENTALS OF ELECTRICAL ENGINEERING A.C. MACHINES by C.L.DAWES etc.and many more. The voltage being SINE WAVE and the voltage is either stepped up or stepped down, MULTIPLES OF 1.1 from the fudamental equation, IS RECURRING and hence we get, 11, 22, 33, 66, 110, or 132, 220 etc DHAYANANDHAN.S
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Anonymous Poster (4); arihan007 (1); biswanath.das (1); charlie_r (1); dhayanandhan (1); Hendrik (1); sb (1); Sparkstation (1)

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