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Re: Contactor question, Arc Suppressioni



Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Gary, it was 24 VDC (which of course changes your look at that scenario). I just was giving a real world example of arc suppression.

Take care,
Bart

Tesla list wrote:

Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>

100 uF and 0.1 Ohm across the contacts?  It's hardly off then, when the
contacts are open.  At 120VAC, 3.2A RMS will flow.

Gary Lau
MA, USA


> Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

> Besides changing the
> circuit to prevent a short should the contact weld closed, I also
> used a resistor and capacitor across the contacts "at the relay"
> which was the last to turn off (via new time delay just so I could
> direct the arc potential to a particular set of contacts). Through
> trial and error, I eventually stopped the relay arcing (I think I
> ended up at 0.1 ohms and 100uF) for this particular relay.