13-10-2018, 09:28 PM
1 MOV coming up - https://www.jaycar.com.au/460vac-4500a-m...v/p/RN3416
Various ways of using them, most common is across feed lines and from each line to a ground.
The linked one is a 460v 4500A one, but there are lower voltage (275 & 100V) ones.
For lightning protection, personally, I would opt for the heaviest current version possible.
Assuming for a moment you have three control lines to the rotator, you will need 6 MOV's - imagine the three lines as the corner of a triangle with an MOV joining each of the corners, plus an MOV from each of those corners to ground.
This configuration will vary depending on how the position information is fed back to the controller.
Various ways of using them, most common is across feed lines and from each line to a ground.
The linked one is a 460v 4500A one, but there are lower voltage (275 & 100V) ones.
For lightning protection, personally, I would opt for the heaviest current version possible.
Assuming for a moment you have three control lines to the rotator, you will need 6 MOV's - imagine the three lines as the corner of a triangle with an MOV joining each of the corners, plus an MOV from each of those corners to ground.
This configuration will vary depending on how the position information is fed back to the controller.