Hey guys ,plz help me out in this
I Want a time delay circuit schematic for operating high voltage contactor,i want this circuit to supply the generator's 220-240VAC after 20-30sec delay....

 

If you want a off-the-shelf option, you can get an oil-fired boiler fuel delay relay. This waits a certain amount of time after power up before allowing the fuel solenoid to open. (Allow fan to clear exhaust and introduce combustion air into the chamber)

Many HVAC shops will have these as well as compressor delay relays. They are called DELAY on MAKE. They start their delay once power is added then complete the circuit.

Cheap and rugged.
[ed]
http://www.icmcontrols.com/products/category.php?cat_pk=12
many, many to choose from.
[/ed]

 

No, i dun want to go in this kinda mess...i just want to design the circuit for this contactor i've already bought... but thnx for ur suggestion...

 

this contactor i've already bought

Can you provide a make and model #, or a link?

Ken

 

Siemens 30A 208-240VAC - 3100-15U2999CL

 

Bad link.

ken

 

You can use your contactor. You will want a 24v delay(or whatever your coil voltage is) rather than a 220v.

That way, when the contactor coil is attempting to charge, the timer will charge first(delaying the circuit) then hit the contactor.

You place the delay on the coil wire to YOUR contactor.

 

Here you go ken:

http://datasheetz.com/data/Relays/Power, Over 2 Amps @ 30 VDC/3100-15U2999CL-datasheetz.html

 

Off the shelf: http://www.newark.com/artisan-controls/438ups/time-delay-relay/dp/86K9981

Ken

 

Thats the exact same device I recommended. Different vendor. I think the op wants to build his own delay.

 

yea i want to build my own delay...is it possible sumway??

 

Yes. Yes it is. How is your electronics knowledge? Have you read the All About Circuits E-Book? If not, the links are at the top of every page.

If you feel comfortable soldering and working with electricity, we could help you.