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# Torque calculation in induction disk type relay

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## Torque calculation in induction disk type relay

(OP)
Hello,
Can anyone point me to any references which gives the calculation for torque generated in an induction disk type relay? I am aware of "very basic" expressions for the torque as in this link (https://www.eeeguide.com/induction-relay-torque-eq...), but I was wonder if there exists any reference which I can use to calculate the torque numbers (not just a basic expression).
Thanks!
Abhishek Basak

### RE: Torque calculation in induction disk type relay

What else do you need? For an α of 90 (or 270) degrees, torque is a maximum, so sin(α) becomes a 1 and drops out of the equation. Two currents and a frequency multiplied together is a pretty easy solution to arrive at.

Dan - Owner
http://www.Hi-TecDesigns.com

### RE: Torque calculation in induction disk type relay

(OP)
To MacGyver2000...
(1) How to calculate the induced current?
(2) What is the proportionality constant?

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