check controller amps

shrpshtr · 03-24-2013, 08:32 PM

is there any way to check the amps coming off of the controller? i imagine it would have to be measured at WOT but would that reflect what amperage the controller is? (ie - a 275a controller should register 275a, a 400a should register 400a, etc)

i am trying to determine if i have a souped up controller or if it is, in fact, a 275a controller stock controller.

thanks in advance.

shrp

scottyb · 03-24-2013, 09:29 PM

No simple test for this. Post pics of the controller and all info you can find on it.

sportcoupe · 03-25-2013, 04:02 AM

If you got an inductive DC clamp-on ammeter you might be able to measure max current. You'd have to be real quick though as max current is only drawn the first second on a full throttle take-off. A helper would be required.

MDLNB · 03-25-2013, 06:17 AM

Quote:

Originally Posted by shrpshtr

is there any way to check the amps coming off of the controller? i imagine it would have to be measured at WOT but would that reflect what amperage the controller is? (ie - a 275a controller should register 275a, a 400a should register 400a, etc)

i am trying to determine if i have a souped up controller or if it is, in fact, a 275a controller stock controller.

thanks in advance.

shrp

I had the same question. Purchased what I was told was a upgraded to 400 amp controller, but have no way of telling if I got the real deal or a scam. Guess you get what you pay for. I can notice no difference between the original 225 amp and the 400 amp supposed upgrade on the same model controller. It would be nice if there was an easy test for it.

shrpshtr · 03-25-2013, 07:36 PM

sport, it just so happens that i do have a clamp on ammeter. could i do the test with the cart on jacks and get an accurate reading or would the cart need to be under the load of it's own weight?

thanks in advance.

shrp

sportcoupe · 03-25-2013, 08:57 PM

Double check your clamp on ammeter, most only measure AC voltage and do not have a DC selection. You cannot check max current on jack stands. Your cart must be under full load and even then it will only pull max alps from a stop for the first second of full throttle take off.

shrpshtr · 03-25-2013, 11:03 PM

Quote:

Originally Posted by sportcoupe

Double check your clamp on ammeter, most only measure AC voltage and do not have a DC selection. You cannot check max current on jack stands. Your cart must be under full load and even then it will only pull max alps from a stop for the first second of full throttle take off.

my fluke measures both. sounds like i need to take the seat off though to test it properly. which cable would i need to clamp? the main cable coming from the controller to the motor?

sportcoupe · 03-26-2013, 04:00 AM

Any main cable on the cart. Current is the same throughout. If your fluke has a peak hold that would make it very easy to do by yourself.

scottyb · 03-26-2013, 09:23 AM

Re check your amp reading capacity

A meter that can test 2-300 DC amps would cost BIG bucks.
A quick search online will show what I mean.....
I thought my fluke meters could read 10a max. Beyond that they will fry.

sportcoupe · 03-26-2013, 11:48 AM

A clamp-on DC ammeter even by Fluke can be under $200 and can easily handle 400-600 amps DC depending on model.

03-24-2013, 08:32 PM	#1
shrpshtr Gone Wild Join Date: Feb 2013 Location: SC Posts: 152	check controller amps is there any way to check the amps coming off of the controller? i imagine it would have to be measured at WOT but would that reflect what amperage the controller is? (ie - a 275a controller should register 275a, a 400a should register 400a, etc) i am trying to determine if i have a souped up controller or if it is, in fact, a 275a controller stock controller. thanks in advance. shrp

03-24-2013, 09:29 PM	#2
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: check controller amps No simple test for this. Post pics of the controller and all info you can find on it.

03-25-2013, 04:02 AM	#3
sportcoupe Gone Wild Join Date: Sep 2012 Location: Savannah, GA Posts: 2,760	Re: check controller amps If you got an inductive DC clamp-on ammeter you might be able to measure max current. You'd have to be real quick though as max current is only drawn the first second on a full throttle take-off. A helper would be required.

03-25-2013, 07:36 PM	#5
shrpshtr Gone Wild Join Date: Feb 2013 Location: SC Posts: 152	Re: check controller amps sport, it just so happens that i do have a clamp on ammeter. could i do the test with the cart on jacks and get an accurate reading or would the cart need to be under the load of it's own weight? thanks in advance. shrp

03-25-2013, 08:57 PM	#6
sportcoupe Gone Wild Join Date: Sep 2012 Location: Savannah, GA Posts: 2,760	Re: check controller amps Double check your clamp on ammeter, most only measure AC voltage and do not have a DC selection. You cannot check max current on jack stands. Your cart must be under full load and even then it will only pull max alps from a stop for the first second of full throttle take off.

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03-26-2013, 04:00 AM	#8
sportcoupe Gone Wild Join Date: Sep 2012 Location: Savannah, GA Posts: 2,760	Re: check controller amps Any main cable on the cart. Current is the same throughout. If your fluke has a peak hold that would make it very easy to do by yourself.

03-26-2013, 09:23 AM	#9
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: check controller amps Re check your amp reading capacity A meter that can test 2-300 DC amps would cost BIG bucks. A quick search online will show what I mean..... I thought my fluke meters could read 10a max. Beyond that they will fry.

03-26-2013, 11:48 AM	#10
sportcoupe Gone Wild Join Date: Sep 2012 Location: Savannah, GA Posts: 2,760	Re: check controller amps A clamp-on DC ammeter even by Fluke can be under $200 and can easily handle 400-600 amps DC depending on model.

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