24 Volt Contactor/Relay Wiring
Baron wrote:
William R. Walsh wrote:
Hi!
Then don't worry about it, if it's only getting warm, rather
than hot.
That's the thing. The outer surface of the coil does get hot after
it's been on for a while. It's too hot to stand touching it for more
than a few seconds. (It isn't so hot that you immediately pull
back--there is more than enough time to think "gee, this is somewhat
hot".)
On the other hand, it has been running trouble free for some time now,
and I can't find any evidence from the original unit it was in, that
the power was in any way limited to the relay, such as by a resistor.
William
Its quite possibly normal for the coil to get quite hot ! AC contactors
have a shorting loop on them to stop the armature chattering due to the
alternating flux. If it bothers you that much reduce the voltage
across the coil a little. Just make sure that it pulls in solidly if
you do.
Or, just put a single diode in series with the coil to remove one half of
the cycle so that a AC coil can operate normal at %50 duty with DC.
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