relays | Page 5

relays

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  1. I

    Anyone much experience with Relays?

    I'm embarrassed to say I know very little about Relays. Never really had much dealings with them. I have a job next week and from the email I got from the company I will have to do the following: 1: Install new speed drives in new enclosure with MCBs ( Either 1 or 2 Drives ) 2: Mount new...
  2. B

    Programmable relays

    hello all. New to the forum, my work is mostly industrial, could any one recomend either the siemens logo or the telemec zelio programmable relays, which would be the easiest one to program ? thanks
  3. C

    Relays

    This should go into the Security section but i notice it is restricted, but can anyone explain how on a access control system the following works (REX) inputs are designed to operate a relative relay output when selected. The request to exit function is activated when a zero volts signal is...
  4. P

    relay

    Hi guys got a problem can anyone point me in the right direction i need a relay or somthing to close then open in 0.5 of a second. any idears
  5. S

    auxilliary contacts in relays and in vcb's

    what function does the auxilliary contacts in vcb and relays serve? what's the need for auxilliary relays??
  6. L

    Undervoltage Relays!

    Hi there. Just wondering whether undervoltage relays exist? I am hoping to use one in a circuit which when it senses an undervoltage will switch, so i can then power a circuit from a battery back-up? In other words, when the power is lost, the relay will detect this and then switch which then...
  7. S

    distance protection relays connection

    How distance protection relays are connected in a circuit i.e.busbars, feeders?
  8. D

    240V 10A Relays

    HI chaps this might sound like an odd one but i need a 10A rated 240V relay that is switched by an electro mechanical switch that is rated at 800W. so i need the 800W switch to switch a relay to to caryy about 2000W the reason for this is the system i am using cant switch such a high load so the...

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