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Monday, October 3, 2016

Under & overvoltage relay for AC main power supply

   After I made a test for Measuring AC Main Supply Voltage with Arduino, now I change the sketch for made protection relay with adjustable limits for undervoltage, overvoltage and delay-off time using 3 buttons:
   After power the module, Arduino read and calculate vltage for AC main power supply and if is ok, coil relay is powered:
   If push MENU/OK button, on display is SET
after 2-3 seconds, on display is undervoltage threshold, who cand change using + & - buttons:
    After you push MENU/OK button, is displayed overvoltage thereshold, who cand change using + & - buttons:
   After you pus MENU/OK buttons on display is delay-off time for reconnect coil relay after voltage is outside good range, also you can change value form 1 tp 20 seconds using + & - buttons:
    After you push MENU/OK button, on display is main voltage:
   I write main_voltage_3.ino sketch who made exactlly in picture, but it more easy to understund cases if you see under & overvoltage relay with Arduino movie

Bibliography:

16 comments:

  1. sir can u send me the program for the delay off time of the relay

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    Replies
    1. what kind of delay off / delay on relay.. please be more clear what you need for help you

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    2. i want program for overvoltage undervoltage protection of single phase induction motor,where i want to give delay of 5seconds to restart the relay after the voltage is ok.
      please send me the program as early as possible.

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    3. which sketch?

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    4. https://github.com/tehniq3/main-supply-voltmeter/blob/master/main_voltage_3.ino

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    5. thank you for the program sir.
      can i get the detail description of the above project.i mean the signalling u did.
      how the 230V is converted to 5V supply given to arduino.

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    6. also send me the components used and the ckt diagram

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    7. see also ar=ticle from http://arduinotehniq.blogspot.ro/2016/09/measuring-ac-main-supply-voltage-with.html
      list of pieces is in diagram, in this article...
      If you canțt recognize an schematic, do not get it...

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    8. thank you..

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    9. sir one more request,
      can you send me the program for above project without using TM1637.
      please...

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    10. yes, but after few days, for me is Easter and I'm in holliday

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    11. Sir i can understand..but its really urgent for me...i havr to submit my project in next week....i am requesting you...please sir

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    12. I put an simplified version for you at https://github.com/tehniq3/main-supply-voltmeter/blob/master/main-supply-relay.ino

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  2. hi do u have the code for ?

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    Replies
    1. is in article link, where is "main_voltage_3.ino"... if click the page go to https://github.com/tehniq3/main-supply-voltmeter/blob/master/main_voltage_3.ino

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