For anyone interested, I wanted to find out what the delay time for pre-charge is for a KLS14401-8080IPS, so I sent this question into Kelly:
Since the internal capacitance is not listed, with a KLS14401-8080IPS using the suggested 2K 20W resistor?
The capacitance is 5160uF.
Given that, the basic RC time constant is 103ms, but that is only to 63.2%. To get near 100% multiply that by 5 up to 516ms. So a little over a half a second is how long you should wait for pre-charge before opening the HV contactor(s).
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!