biggy wrote: ↑
Sep 27 2018 9:38am
I recently built a 48v 1000w ebike with a Delta Wye switch using a 11 Pin 24 volt relay and I used a buck converter to take down my battery voltage to 24 volts to control the relay but now I am experiencing driveability problems under high load it feels like a misfire every once in awhile or when I go over bumps has anybody else had an issue with these relays doing this ?
At the risk of being obvious, try mounting the relay rotated 90 degrees horizontally,from its' present position. If that does not help, return the relay to its' original position and then rotate it 90 degrees in the vertical axis. Which way the relay will work best to defeat the problem depends on the physical construction of the relay, which I cannot guess. You might also consider mounting the relay in some kind of shock-absorbing mount, such as a small box loosely filled with soft foam rubber; mount the relay in the box in the position that worked best when it was first rotated. Check the relay now and then for heat buildup, if mounted in a box.
Relays like yours have two sets of contacts. To minimize heating, use the Normally Closed contacts for the configuration that you use the most (in time). If you use Delta longer than Wye, then wire the relay to run Delta through the Normally Closed contacts. If you use Wye longer than Delta, then wire the relay to run Wye through the Normally Closed contacts.