lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
Thread Tools Display Modes
Unread 09-30-2015, 11:41 PM   #1
Gone Wild
 
usagcr's Avatar
E-Z-GO
 
Join Date: May 2015
Location: Elberta Al a BAMA
Posts: 159
Default 39vdc going to the chasis ???? 2001 CC

I hope this is not in a thread already. I have a customers 2001 CC. The customer is saying that he was only getting about 30 minutes run time after a full charge. Well naturally we checked the batteries and they were shot (they were 8.5 yrs old so he got his money worth out of them.) We also noticed his battery charger NEVER dropped below 9.5 amps. My dad thought that something might be wrong with the OBC because of the charger not dropping below 9.5 amps, however I noticed we had 39vdc on the frame of the cart. (and you might not believe it but I also got 36vdc on the friggon rubber tire) so dad went in to read on how to reset the OBC and I wanted to find where we were getting the 39v from, so I traced the b- wire through the OBC to the left side of controller and thought maybe the controller was grounding to the chasis so I removed the controller so it was not touching anything and I still had the 39v on the chasis. SO I thought it had to be coming from one of the other wires from the right side of the controller (and we all know, that is the A1, A2, F1, F2) so OOPS (by the way my meter leads were connected to B+ and negative lead to the chasis) So I was watching the meter and removed the A1,2 I still had 39v to the frame. I disconnected F1 and still had 39v I disconnected the last wire F2 and BINGO I lost the 39v to the chasis and only had less than a volt. I thought EUREKA I found the answer to where my ground was coming from. NO WAY JOSE It did not matter how I took them off, it would have been the last wire and I would have lost the 39v because they were ALL HOT. SO I guess what I am asking is why do I have 39v getting to my chasis through the A1 and A2 that have 56.5vdc and F1 and F2 getting 55vdc from the right side of my controller ? is this normal or is there supposed to be something in the controller preventing that ? And now throw dad in the picture again he comes out and resets the OBC and presto the cart charger went alll the way to 0 amps and shut OFF. it actually did that twice. He thinks re-setting the OBC is what made the charger work properly, however I had the four wires A1 A2 F1 F2 off the controller and therefore did not have 39v going to the chasis. I say the charger will never get to 0 and shut off because the cart has 39v discharging ALL THE TIME. SSoo we get the new batteries in and service them and connect the controller back up and away we go, 48v cart hauls butt it is a nice ride. so we run it a half hour around the property and go to charge it up and sure enough the charger will not go below 9 amps and we still have the 39v on the chasis. Can someone shed some light on this for us please. Oh and the bonus question is how the heck do I get a 36v reading from a rubber tire and only .5v on the rim ??

Thanks
Bill
usagcr is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Unread 10-01-2015, 12:13 AM   #2
Dazed & Confused
 
crash test dummy's Avatar
Club Car
 
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,021
Default Re: 39vdc going to the chasis ???? 2001 CC

check cables around the frame they may have rubbed through the casing

as for the tires ... change the DVM ... there is no way electricity can go through rubber
crash test dummy is offline   Reply With Quote
Unread 10-01-2015, 09:43 AM   #3
Gone Wild
 
Dale-D's Avatar
Club Car
 
Join Date: Sep 2013
Location: New Iberia, La.
Posts: 154
Default Re: 39vdc going to the chasis ???? 2001 CC

meter may have been on AC and not DC
Dale-D is offline   Reply With Quote
Unread 10-01-2015, 01:26 PM   #4
Gone Wild
 
usagcr's Avatar
E-Z-GO
 
Join Date: May 2015
Location: Elberta Al a BAMA
Posts: 159
Default Re: 39vdc going to the chasis ???? 2001 CC

Where's own DC The meter was def on dc. I will keep searching for a rubbed wire. But should I have battery voltage (55.6) coming out of my controller to my F and A (field and armature) going to the motor. We checked and the solenoid is open. The run tow switch is in tow, and f-n rocker is in neutral, and key is off.

I have a video of the meter reading the tire if it is not to big I will try to post it
usagcr is offline   Reply With Quote
Unread 10-01-2015, 01:44 PM   #5
Gone Wild
Club Car
 
Join Date: Jul 2015
Location: Alpharetta, GA
Posts: 226
Default Re: 39vdc going to the chasis ???? 2001 CC

Unless the tire was steel belted, and the belting was exposed somewhere touching a wire and where you put your meter, rubber does not conduct electricty.....ever. It simply can't. Do you have a meter like the Extech that has a voltage sensor on the top that works without using leads? I have an Extech ES330 or something like that that works without leads when held close to a source.
cartattach is offline   Reply With Quote
Unread 10-01-2015, 05:57 PM   #6
DS Drivers Club Founder
 
CCFanatic's Avatar
Club Car
 
Join Date: Jul 2013
Location: Upstate NY
Posts: 3,408
Default Re: 39vdc going to the chasis ???? 2001 CC

Positive Volts To the Frame?
CCFanatic is offline   Reply With Quote
Unread 10-01-2015, 08:38 PM   #7
Gone Wild
Yamaha
 
Join Date: May 2012
Location: Rio Verde, Az
Posts: 2,679
Default Re: 39vdc going to the chasis ???? 2001 CC

Voltage leakage to the frame is due to acid spilled. Clean everything up and that will go away.
Volt_Ampere is offline   Reply With Quote
Unread 10-01-2015, 08:49 PM   #8
Dazed & Confused
 
crash test dummy's Avatar
Club Car
 
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,021
Default Re: 39vdc going to the chasis ???? 2001 CC

Quote:
Originally Posted by Volt_Ampere View Post
Voltage leakage to the frame is due to acid spilled. Clean everything up and that will go away.
the tires ???
crash test dummy is offline   Reply With Quote
Unread 10-02-2015, 02:04 PM   #9
Old Sky Soldier
 
mrgolf's Avatar
Club Car
 
Join Date: Dec 2011
Location: Kentucky
Posts: 2,975
Default Re: 39vdc going to the chasis ???? 2001 CC

Hey guys, I would like to challenge each of you to put your neg. probe on pack neg. then pos. On tire, or frame.:

I tried it today and son of a gun, I have 25 volts on neg. to tire and 26 volts on pos. To tire. I changed DVM and used my Fluke 77 and got the same darn thing.

My cart runs just fine no problems what so ever. I can play more than 47 holes of golf on a charge and voltage is still more than 48 volts. But the darn thing shows voltage on the tires.:

BTW my batteries are clean and dry, no bare wires anywhere.
mrgolf is online now   Reply With Quote
Unread 10-02-2015, 02:27 PM   #10
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 4,561
Default Re: 39vdc going to the chasis ???? 2001 CC

The Fluke 77 has a DC input impedance of > 10MΩ.

The Fluke 117 has the same high impedance, but it also has a Low Impedance Mode (Lo-Z) of 3kΩ (3,330 times smaller).

The regular high impedance on most meters cannot be used to read voltage on disconnected (or unrelated in this case) circuits as it only takes 2.5 micro amps for those meters to read 25v (regular noise).

You would need a circuit that can deliver 8.3 milliamps (3,330 times more current) to read 25v on a Lo-Z meter.

Of course Lo-Z meters cannot be used around electronic equipment as it affects the circuit being measured, but it is the best way to eliminate ghost voltage readings.

I hope this helps in selecting the right equipment for the job.
Sergio is online now   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
G8 chasis rust Gas Yamaha
92 g8 rolling chasis w/ elec motor-michigan Golf Carts and Parts
Fs - rolling chasis / rims tires / suspension Golf Carts and Parts
WTB: Ez Go Rolling Chasis Golf Carts and Parts
WANTED: EZGO Rolling Chasis/Frame Golf Carts and Parts


All times are GMT -5. The time now is 08:14 AM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.