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Unread 10-18-2007, 11:11 PM   #21
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Default Re: High voltage contactor

buckmanmike,
after rereading the posts I wanted to make sure you have a 72v controller or following some boost procedure (roady89 boost). you cannot run 72v with a 48v controller. too be clearer I have a 48v to 72v curtiss controller and can run anywhere in between.
stuck solenoid with resistor cart = bad news
jeff
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Unread 10-19-2007, 02:10 AM   #22
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Default Re: High voltage contactor

I recieved my controller today and they sent me the wrong one. I ordered a 48-72v unit and I got a 36-48v unit. Needless to say I'm PO'd. I was planning on working on cart this weekend at deer camp and have it ready to go to 72 volts next time I got down here.
I don't want to mention the name of company I bought controller from yet. They were real nice and helpful when I ordered my controller but that was almost 5 weeks ago and then they send me the wrong one. I sent them a email to correct order(after talking to them on phone) and have heard no response. I stated in a previous post that I ordered a 400a controller, but actually it was supposed to 700a.
Does anyone have an opinion on the controller I ordered. It was a GE brand, I believe to be marketed as a Star controller. I never opened box but packaging indicated this brand.
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Unread 10-19-2007, 03:03 PM   #23
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Default Re: High voltage contactor

Star is made by GE. It should be fine, I have not played with one personally but it should not be any worse than Curtis or Alltrax.
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Unread 10-19-2007, 08:54 PM   #24
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Default Re: High voltage contactor

Thanks for replies.
But I am really getting PO'd about my controller. To me several hundred dollars is a lot to upset about. Glad it was on credit card so I can protect myself.
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Unread 10-19-2007, 08:57 PM   #25
nimda
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Default Re: High voltage contactor

Buckman...I'm not sure what that relay part is you described but I don't think it can be used. Let me break the part numbers down on the czonkas and make a sticky for them.



Also...I haven't seen a reasonably priced 700 amp 72 volt controllers. The only 700 amp controllers I have seen are 48 volts.
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Unread 10-19-2007, 09:40 PM   #26
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Default Re: High voltage contactor

Yes Roady the controller I received was a 700a 36 - 48 v. I am not sure now of what the amp rating was of the 48-72 v controller that I ordered. The way I understand it though, You don't need as much amps at higher voltage?? I am thinking my 48-72 controller was to be 400a(supposeably).
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Unread 10-19-2007, 09:56 PM   #27
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Default Re: High voltage contactor

Correct...you will pull less amps on higher voltage. Also more efficient at higher voltage...up to a point.
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Unread 10-20-2007, 02:30 AM   #28
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Default Re: High voltage contactor

A 48V 700A controller is a few more watts than a 72V 450A controller. I would still put my money on the 72V controller because as soon as the CEMF comes up the 48V cannot push 700A; the resistance is too high for that voltage. Ohms Law.
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Unread 10-20-2007, 09:59 AM   #29
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Default Re: High voltage contactor

thats to bad about the controller. I hate waiting for stuff. My controller is 400amps and it seems as if good batteries are the limiting factor
let us know when your controller comes
jeff
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Unread 10-21-2007, 09:13 PM   #30
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Default Re: High voltage contactor

Golf cart 6V batteries are being pushed at 700 amps and can be damaged if this is exceeded. 8V batteries have a lower amp rating before damage.
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