Time Delay For Solid State Relay?(CONTACTOR)

Discussion in 'The Projects Forum' started by aq_rules, Jan 23, 2010.

  1. aq_rules

    Thread Starter Member

    Oct 28, 2009
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    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....
     
  2. retched

    AAC Fanatic!

    Dec 5, 2009
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    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]
     
    Last edited: Jan 23, 2010
  3. aq_rules

    Thread Starter Member

    Oct 28, 2009
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    No, i dun want to go in this kinda mess...i just want to design the circuit for this contactor i've already bought...:D but thnx for ur suggestion...
     
  4. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    Can you provide a make and model #, or a link?

    Ken
     
  5. aq_rules

    Thread Starter Member

    Oct 28, 2009
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  6. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    Bad link.

    ken
     
  7. retched

    AAC Fanatic!

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    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.
     
  8. retched

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  9. KMoffett

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  10. retched

    AAC Fanatic!

    Dec 5, 2009
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    Thats the exact same device I recommended. Different vendor. I think the op wants to build his own delay.
     
  11. aq_rules

    Thread Starter Member

    Oct 28, 2009
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    yea i want to build my own delay...is it possible sumway??
     
  12. retched

    AAC Fanatic!

    Dec 5, 2009
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    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.
     
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