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Re: (ET) Help!



I’d like to know a few more things about the “event”. What position was the speed controller in (neutral, or other), has your seat switch been defeated or was it closed from having you or something with enough weight on the seat, and which wires touched?

 

I think there might be something else going on to blow the switch, since the wires going to the reverse switch just carry coil power and shouldn’t have enough power to disintegrate a connector. Also, in neutral, they shouldn’t have power available at all since the power from the start switch is being directed into the RTN circuit. If power was available (i.e., the controller in 1st or higher speed position) it could be possible to power both the F and R contactors, which would put a short across the battery pack, but I don’t think this happened.

 

Nick

 

From: djkolla chorus.net [mailto:djkolla chorus net]
Sent: Wednesday, July 09, 2014 11:22 AM
To: elec-trak cosmos phy tufts edu
Subject: (ET) Help!

 

I have an EGT150 with a self induced problem. Last week I pulled a stupid and accidentally had two wires from the speed control (two of the reverse switch wires) wire ends touch together. Need to remember to turn off the main power switch. An arc occurred essentially burning up the connectors on each wire. After putting new connectors on, I found that the control circuit fuse was blown. The fuse blew again immediately when I replaced it. Most testing procedures ask you to follow the voltage however, in this case with the fuse blown the power can not be on. I can not see any physical damage, burning or something of that sort.

Questions: 1) What component should I be checking that would cause the fuse to blow? 2) How do I test that component?

Any help will be appreciated.

Dave