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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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3Ph converter idler motor speed
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Bill K
How much current do you have available on the 240 VAC single phase service? But, you are probably aware that a 30 HP idler could be difficult to spin up. I dont see many high current single phase services. I'd be real interested in hearing about how your project progresses. Jerry wrote in message k.net... In article t, says... Hello group: I am one of the probably many lurkers on this site and I wish to thank all contributors to this newsgroup for adding to my somewhat limited knowledge of machining, it amazes me the massive knowledge base that is available here, I enjoy reading everything that is posted-even the OT post witch at the very least are entertaining . I do have a question though, somewhere I saw a post dealing with 3ph converters, specifically the best speed for the idler motor. I am in the process of building a 30HP 3PH converter to run a new inverter welder that I have,a welder that can not be run on single phase but will run on 240,360,440 volts 3PH,it was made for shipboard (marine) use only-for UNITOR by Lincoln France,(Unitor is a suppler of commercial marine equipment world wide).I have access to almost any size(up to 150HP),speed( from 3900rpm to 870 rpm)and type of motor plus all the caps,contacts,switches,wire and boxes I will need. Any help or information is greatly appreciated. I am located in central Florida near Orlando and as I stated above I have access to a large supply of industrial and military surplus, electrical items,machining supply and equipment,hydraulic and welding equipment-I deal in surplus part time to supplement my retirement income but have friends that are in the business on a large scale so if anybody here needs anything send me a email and I will try to help. Thanks again: Bill K |
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Hi Jerry:
I have 400 amp service available were the converter will be located, the building is a rental 25x10 storage building, I have 4 units in a row and have the only 220 volt in the park, the other units are fed from another pole on the other side of the complex and are strictly for storage. The owner was going to add another 20 units on my end but never did so I get all the power. I would have 3ph run to my building but the power co wanted almost $9,000.00 to do it, even though the pole were my power comes from has three phase to it, they said it was because my building was a commercial building. Thanks again: Bill K |
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