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HT Relay

Discussion in 'Electronic Design' started by Ian Bell, Dec 24, 2009.

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  1. Ian Bell

    Ian Bell Guest

    I am trying to select a relay for a delayed HT switch (which will also
    discharge the HT when off). Most relays I can find have contacts rated
    at 250VAC which translates into a peak of about 350V. However, data is
    scarce on what dc voltage these relays can switch. So far I have found
    only one that gives a dc current versus voltage curve and that stops at
    210V dc (and 200mA) and I really want to be able to switch up to 350V at
    up to 200mA. The rest just give a dc voltage at max current value.

    So, I am guessing that this problem has been faced before and there are
    relays that are known to work fine in this application. Any recommendations?

    By the way I prefer a 5V coil.

    Cheers

    Ian
     
  2. Ian Bell

    Ian Bell Guest

    I can understand that with high currents which is why many of the 250VAC
    10 or 20 amp relays I have seen are only rated at about 30Vdc for the
    same amps but here I am only switching a small fraction of an amp.
    I would rather not.


    Cheers

    ian
     
  3. Ian Bell

    Ian Bell Guest

  4. Kilovac?
    <http://relays.tycoelectronics.com/kilovac/>

    Cheers
     
  5. Phil Allison

    Phil Allison Guest

    "Jan Panteltje"
    Ian Bell

    ** Course you can, if you de-rate the breaking current figure sufficiently.

    The OP has, like YOU, made a blunder in his interpretation of the specs.



    .... Phil
     
  6. Phil Allison

    Phil Allison Guest

    "Jan Panteltje"
    "Phil Allison"

    ** Only a bullet in the head would work on you

    - you fucking illiterate wog idiot.




    ...... Phil
     
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