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uweka
Power-User

Join Date: Jan 2007
Location: Berlin (Germany)
Posts: 332
Good Answers: 1

Power Transformer

05/06/2007 2:12 AM

Hi all,

for a customers Diesel-Generator-Set we need a transformer to convert the generators 11kV output to 30kV.

The generator data:

Synchronizing three-phase brush-less alternator. Has a damping winding for parallel operation with the electrical network.
Apparent horsepower: 14 460 kVa
Active Power: 11925 kWe
Voltage: 11 000 V
Power Factor (cos phi): 0.8
Frequency: 50Hz
Speed: 428 rpm
Over Speed: +20%
Yield: 97%
Short Circuit Intensity 3 x In
Isolation Type: F
Protection: IP21

Refurbished parts with guarantee welcome. Can someone help ?? 2 parts needed.


Thanks Uwe

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cnpower
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Engineering Fields - Control Engineering - New Member China - Member - New Member

Join Date: Sep 2006
Location: CHINA
Posts: 2945
Good Answers: 14
#1

Re: Power Transformer

05/06/2007 4:53 AM

we can wind two for you.

you can also wind by yourself, I can offer you the parameter. if you have a good core.
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uweka
Power-User

Join Date: Jan 2007
Location: Berlin (Germany)
Posts: 332
Good Answers: 1
#5
In reply to #1

Re: Power Transformer

05/09/2007 4:43 PM

Hi cnpower,

thanks for the offer - I am sure we cant do ourself, because 14 Megawatt is a lot of wood and we are not equipped to handle such devices with a weight of about 20 tons.
When you have a source - any hints are welcome.

Aurizon, the first thing I did many hours was googling like that, but things with that power and voltage seem to be rare, especially when operated at 50 Hz. So until now I have not got a rough price info.

Nice, if someone could help.
Thanks Uwe

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aurizon
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Hobbies - HAM Radio - New Member United Kingdom - Big Ben - New Member Fans of Old Computers - Altair 8800 - New Member Canada - Member - New Member

Join Date: Jun 2006
Location: Toronto
Posts: 3968
Good Answers: 120
#6
In reply to #5

Re: Power Transformer

05/09/2007 7:32 PM

Many power companies have yards full of transformers which they will sell you...at a price. They may be bandidos

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davidbmac
Member

Join Date: May 2007
Posts: 5
#2

Re: Power Transformer

05/07/2007 6:13 AM

Actually, all that is needed is a trafo 11/30KV at 14MVA. All the numbers concerning the generator other than frequency don't enter the equation. BTW That is one "mother" of a diesel engine!!
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cnpower
Guru
Engineering Fields - Control Engineering - New Member China - Member - New Member

Join Date: Sep 2006
Location: CHINA
Posts: 2945
Good Answers: 14
#3

Re: Power Transformer

05/07/2007 6:29 AM

the key is hv insulation and radiator.
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aurizon
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Hobbies - HAM Radio - New Member United Kingdom - Big Ben - New Member Fans of Old Computers - Altair 8800 - New Member Canada - Member - New Member

Join Date: Jun 2006
Location: Toronto
Posts: 3968
Good Answers: 120
#4

Re: Power Transformer

05/07/2007 7:40 AM

lots of people sell those used.

drill here

http://www.google.com/search?hl=en&q=%22used+power+transformers%22&btnG=Google+Search

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