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Default Schematic Diagram Example

Here is a good example of a wiring schematic diagram for your EV:

Contributors: rbgrn
Created by rbgrn, 09-20-2007 at 12:18 PM
Last edited by rbgrn, 09-20-2007 at 12:18 PM
1 Comments , 59222 Views
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Old 10-09-2010, 10:09 PM
Lee Hart Lee Hart is offline
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Default Re: Schematic Diagram Example

- Add a precharge resistor across main contactor RS. It is typically a 200 to 1000 ohm power resistor (a 60 watt 120v light bulb will do). Close negative contactor MS first, and wait a second or so for the precharge resistor to charge up the capacitors inside the Curtis 1231C controller. Then close RS and you are ready to drive.

Without a precharge resistor, a huge surge of current flows into the controller when RS closes. This damages the contacts of RS, and shortens the life of the controller.
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