DIY Electric Car Forums banner
Cancel

Reconciling Curtis Motor Controller 1231c and Leaf Battery Junction Box Precharge Resistor Requirements

1165 Views 1 Reply 2 Participants Last post by  lj516, 
S
I have these parts in hand. Using them together would therefore be doubly handy. My system will be 120V, with amps limited to 250. This jives well with the 500v, 250amp, master leaf battery junction box fuse, and by deduction, the two main contractors.

122212


now the precharge resistor ohm question: the picture shows the recommended specs for the Curtis 1231c motor controller precharge resistor (750 ohms, 25 watts). I have it on good authority that the precharge resistor in the Leaf Battery Junction Box is 25 ohms.
122213
Electronic instrument Audio equipment Gadget Digital camera Gas
Rectangle Font Parallel Pattern Number
Electronic instrument Audio equipment Gadget Digital camera Gas
Rectangle Font Parallel Pattern Number
what is the consequence of using this system as is? Seems clear the precharge resistor in place will protect the master relays from welding, but will it sufficiently protect the Curtis Motor Controller?
Save Share
Reply Quote
1 - 2 of 2 Posts
L

· Registered
Joined
·
76 Posts
#2 ·
slower precharge would be the only consequence of using the as is resistor. Other way around you would risk burning up the resistor and then welding your contacts shut the next time your main relay comes on.
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
DIY Electric Car Forums
A forum community dedicated to DIY electric car owners and enthusiasts. Come join the discussion about electric vehicle conversions, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
All EV Conversions and Builds Batteries and Charging EVDL List Technical Discussion New Member Introductions
Top