I’m hoping some electrical gurus on this forum can help me.
I’ve now gone through 2 Flycolor X-cross 160A ESCs in one week and ended up with a burn injury.
Both times my ESCs have exploded a few seconds after connecting a battery up without my Motor connected on the other end. I have a 3 phase connector which allows me to disconnect the motor at the mast. Same way the Gen 2 FD does. Is powering up the ESC without a motor in the circuit a reason for this to happen??
It’s always the row of small caps that fail and pop which suggests it’s not dealing with the in-rush current when connecting.
Please help? This is getting expensive and painful
No unfortunately I have no idea what is causing this. Everything I’ve found online has suggested fine to connect battery without motor, as long as phase wires don’t short. Im not going to risk it anymore regardless.
10s2p. Had it working for months and I’ve done nothing different but suddenly within 1 week killed 2 ESCs
Just a thought have you checked your XT90 anti spark is working as it should?
no corrosion and that there is 5 ohm between the two stages on the positive side.
Are you removing the heat sinks and mounting on custom heat sink block ? nothing that could be shorting out??
I was removing them and mounting my own custom clamp that mounts against an external sink. But I am going to leave this one completely standard and try as is. No contact with anything other than the mosfets and triple checked. The only thing I can point to is not having had my motor connected.
Re: anti spark amass connectors, I have my anti spark side on all of my batteries since the pins are female so thought might be less risk of shorting in their box. Both times I have fried the esc I have used 2 different batteries so I don’t think it’s a bad connector. Unless it’s on the male non anti spark side? How might I check in any case ?
I think I will eventually fuse my batteries. Any recommendations on what fuse I should be looking at?
Whatever short protection this ESC has def doesn’t do anything to help me here. What I can’t understand is I have been using this system for a couple months and it’s been working great. Until now for some reason.
Pretty much rules out the Antipark as was over 2 Batteries, and yes antipark is on Female one.
I am guessing you were using a non-conductive heat sink compound.
