3 phase guru question

[dubliner]

Sorry for the bad picture ( under the table, bad light, iphone ) any way I had this contactor as part of a rotary convertor and blower. I moved to a new shop and left everything connected so it would be easy to get running again, well the blue wire in the picture comes from the lower right of the contactor and there is also a hot 110 v wire that is loose - I cant remember if they were connected to the block or just wire-nut together. Can anyone ID whats going on - I can get better pics or give position numbers if that helps. Thanks in advance Neville

[terryjones]

Sounds like an electrician would be the safest bet. I would hate to go on someone's guess from your picture. I love Shopbotting too much to fry the electrical, not to mention expensive. :)

[gundog]

Terry is giving you sound advice. All 3 phase is not equal. Depending on the voltage and whether your last install was a Y or delta. If you hook it up wrong you will let the smoke out.

Mike

[dubliner]

Im not worried about the 3 phase, its the 110 part of the contactor. Does anyone have a Telemecanique or equivalent starter on their 3 phase blower? FYI Terry & Michael - The vac motor is completely independant of the Bot.

[gundog]

Im not worried about the 3 phase, its the 110 part of the contactor. Does anyone have a Telemecanique or equivalent starter on their 3 phase blower? FYI Terry & Michael - The vac motor is completely independant of the Bot.

That is exactly why you need to worry what you don't know can kill you or your machine. If the secondary is a delta connection you will have if 120/240 3Ø 2 120 volt legs and a power leg that measures about 208 volts to ground all legs will measure 240 between legs giving you your 3Ø. If the secondary is Y connected you will have 120 volts to ground and 208 between phases for a 120/208 3 phase. Where you will get into problems is with the delta secondary and the stinger leg if you use that for your 110 service. There are other voltages I did not mention but it works the same but the voltage would be 240/480 or 277/480. Bottom line is if you don't know hire a pro.

Mike

[frank134]

go to their web site and put in the model number and you may find the wiring drawing.

[dubliner]

Its working!,

[MogulTx]

Good Man, Neville! Good for you!

Monty

[dubliner]

Thanks Monty. I mis-stated that Michael. The 110v is an external supply to close the contactor. I see your point of course. Neville

[curtiss]

Neville,

Seems like your post # is stuck on 555...

but "It's working" is a very good sign :)

Could be all that vacuum is holding back information from getting into cyberspace.