my relay is keep burning

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eng.hossam
Posts: 30
Joined: Oct 1st, 2013, 3:09 am

my relay is keep burning

Post by eng.hossam »

hello,I'm using relay 48VDC for coil and 60A for contact ,the problem is that it keep burning every try and i don't know why?

*my motors need 5A to run perfectly.
sideshow
Posts: 4
Joined: Dec 12th, 2013, 10:05 am
Location: Norway

Re: my relay is keep burning

Post by sideshow »

Have you doublechecked the supply voltage?
eng.hossam
Posts: 30
Joined: Oct 1st, 2013, 3:09 am

Re: my relay is keep burning

Post by eng.hossam »

sideshow wrote:Have you doublechecked the supply voltage?
what's mean of doublechecked ?
rossrov
Posts: 383
Joined: Feb 28th, 2013, 5:01 pm
Location: Australia

Re: my relay is keep burning

Post by rossrov »

Hossam, please tell details of the relay you are using. If you supply a circuit diagram of connection to motor and power supply this would help others answer your question. Show voltage of power supply
eng.hossam
Posts: 30
Joined: Oct 1st, 2013, 3:09 am

Re: my relay is keep burning

Post by eng.hossam »

i can't use a a cad program but i did my best to show our circuit.


motor go on direction if i operate the first relay and another direction if i operate the second relay
Attachments
Untitled-1.jpg
Untitled-1.jpg (101.92 KiB) Viewed 3843 times
rossrov
Posts: 383
Joined: Feb 28th, 2013, 5:01 pm
Location: Australia

Re: my relay is keep burning

Post by rossrov »

Thank you. Wiring is correct. Is the motor burning? What is the motor voltage specification? What sort of motor? Please give part number or description.
eng.hossam
Posts: 30
Joined: Oct 1st, 2013, 3:09 am

Re: my relay is keep burning

Post by eng.hossam »

rossrov wrote:Thank you. Wiring is correct. Is the motor burning? What is the motor voltage specification?
the motor isn't burning and it's temperature is normal,the relay is my problem
rossrov
Posts: 383
Joined: Feb 28th, 2013, 5:01 pm
Location: Australia

Re: my relay is keep burning

Post by rossrov »

OK, so what are the relay specifications? AC or DC coil, coil voltage. What voltage are you applying to the coil. Or is it the contacts that are burning?
sideshow
Posts: 4
Joined: Dec 12th, 2013, 10:05 am
Location: Norway

Re: my relay is keep burning

Post by sideshow »

How is the coil of the relay connected?
Have you tested the relay before you put it in the circuit to know wether or not it's your circuit?
How many volts do you measure at the coil?
eng.hossam
Posts: 30
Joined: Oct 1st, 2013, 3:09 am

Re: my relay is keep burning

Post by eng.hossam »

sideshow wrote:How is the coil of the relay connected?
Have you tested the relay before you put it in the circuit to know wether or not it's your circuit?
How many volts do you measure at the coil?
the coil 1st pin is connected to GND and the other pin is connected to a button to 48 VDC.

i don't understand the second question

the coil is 48 VDC
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