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Should a relay be warm?


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vancouverbc 
Copper - Posts: 72
Copper spacespace
Joined: September 27, 2004
Location: Canada
Posted: October 22, 2004 at 1:05 AM / IP Logged  
I have a relay that interrupts the starter and it is warm to hot when it is latched. Is this normal?
1991 240sx
alarm=model 2620.web central door locking system
markcars 
Silver - Posts: 662
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Joined: December 11, 2002
Location: New York, United States
Posted: October 22, 2004 at 11:16 AM / IP Logged  
Relays should normally never be hot because they only function as an electrical switch (note I never said electronic but electrical), and the coil that is used for induction has a very low impedance that drags very little current. If it is getting hot, one of the possibilities could be that the amound of current being switched by its connectors is more than the maximum current rating of the relay. Double check that.
If it is still getting very hot, you better check it before it starts a fire.
vancouverbc 
Copper - Posts: 72
Copper spacespace
Joined: September 27, 2004
Location: Canada
Posted: October 22, 2004 at 4:38 PM / IP Logged  
ok, i will try changing relays.  the relay is warm but the terminals feel hot.
1991 240sx
alarm=model 2620.web central door locking system
webxfx 
Copper - Posts: 58
Copper spacespace
Joined: November 22, 2003
Location: Canada
Posted: November 08, 2004 at 11:21 PM / IP Logged  
but shouldn't the relay for the starter be OFF and only ON if someone tries to start it
genehewett 
Copper - Posts: 151
Copper spacespace
Joined: December 12, 2003
Location: Georgia, United States
Posted: November 15, 2004 at 7:52 PM / IP Logged  
   Webxfx is correct. The relay for your starter disable should never get hot because the only time it is activated is when it is protecting the starter circuit. It should be wired to open the circuit when the ignition is turned on but at the same time should not activate when you are driving.
auex 
Platinum - Posts: 5,041
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: December 23, 2002
Location: Arizona, United States
Posted: November 15, 2004 at 9:12 PM / IP Logged  
How is the relay wired?
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