This relates to a IC scooter conversion to electric but I’m thinking this is the best place for this question.
I keep killing my contactor and I am not sure why. Here are the basics of the electrical setup:
4kw 72V hub motor
Kelly sinusoidal controller
72v batter pack that can sustain 150A and peak to 250A
The fully charged pack voltage is 84v. I have fried a couple of Sayoon 72v 200A contactors. I tried a 72v 300A contactor and it stopped working. I also have a 84v 400A contactor.
The contactor has a pre charge resistor and a diode in place for protections.
Is the pack voltage at 84v frying the 72v contactor? Should I focus on the contactor max voltage or make sure it will handle the max peak amps? When it all works it is fantastic but the contactor issue is ongoing. Thanks for any thoughts!
I keep killing my contactor and I am not sure why. Here are the basics of the electrical setup:
4kw 72V hub motor
Kelly sinusoidal controller
72v batter pack that can sustain 150A and peak to 250A
The fully charged pack voltage is 84v. I have fried a couple of Sayoon 72v 200A contactors. I tried a 72v 300A contactor and it stopped working. I also have a 84v 400A contactor.
The contactor has a pre charge resistor and a diode in place for protections.
Is the pack voltage at 84v frying the 72v contactor? Should I focus on the contactor max voltage or make sure it will handle the max peak amps? When it all works it is fantastic but the contactor issue is ongoing. Thanks for any thoughts!