Wish to Buy Short Circuit Generator
Wish to Buy Short Circuit Generator
(OP)
Hi,
We are considering acquiring a 800 or 1200 MVA short circuit generator for a lab. Would you have any idea where to find such a product? I'm currently checking the usual suspects (Siemens, Alstom, Toshiba) but might probably miss somes. Would you have any tip for refurbished or used ones?
Thanks.
We are considering acquiring a 800 or 1200 MVA short circuit generator for a lab. Would you have any idea where to find such a product? I'm currently checking the usual suspects (Siemens, Alstom, Toshiba) but might probably miss somes. Would you have any tip for refurbished or used ones?
Thanks.





RE: Wish to Buy Short Circuit Generator
1200MVA? Wow. Look for a nuke plant which is being decommissioned.
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If we learn from our mistakes I'm getting a great education!
RE: Wish to Buy Short Circuit Generator
I wish it was that sexy a project, but unfortunately it's just for a test lab ...
RE: Wish to Buy Short Circuit Generator
RE: Wish to Buy Short Circuit Generator
What is the time frame that this unit must supply 1200MVA? You are talking some serious power. Most steel mill electric arc furnaces I have seen draw less than 100 MVA.
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If it is broken, fix it. If it isn't broken, I'll soon fix that.
RE: Wish to Buy Short Circuit Generator
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If it is broken, fix it. If it isn't broken, I'll soon fix that.
RE: Wish to Buy Short Circuit Generator
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RE: Wish to Buy Short Circuit Generator
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If we learn from our mistakes I'm getting a great education!
RE: Wish to Buy Short Circuit Generator
Hi:
Short-circuit generators have to supply constant current and practically constant frequency over a minimum of 20 half cycles when testing h.v. switchgear. The generator moment of inertia therefore has to be quite high. I know of a test field where two such generators are installed. The three-phase short-circuit output is 4300 MVA at the generator terminals and 2800 MVA at the transformer secondary winding. The units in question are salient-pole machines with a rotor weight of 225 tons (each of the 8 poles weigh 11 tons), the stator weight is 390 tons and the total weight 680 tons. Stator core and pole length is 5 metres. The generator model size is about 300 MVA. A 3 MW asynchronous motor is accelerating the generator rotor from standstill to 750 rpm within 15 minutes. In order to relieve the foundation from excessive short-circuit forces heavy spring packets are provided between stator housing and foundation.
Regards
Wolf
www.hydropower-consult.com