MOV Search

Nov 23, 2021 4 Replies
A

Hello,



I am an Alarm Technician among other things or stuff.



I was thinking about installing a simple MOV on the Transformer that feeds power to the Alarm Board. The industry standard is



16.5VAC 40VA plug in Transformer. 120 Volt Input.

Can anyone point to a specific MOV that would serve as a good lightning or surge protection if placed across the output terminals of the transformer??



I have seen a NTE524V15 used by others but looking at the spec's it seems to be a bit much for the application.



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Any thoughts out there??



Thanks for any insight.



Les


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P

ABLE1 wrote: ===========

** Your secret is safe with me....

** NO - MOVs must go on the primary side to be any use.
** That is a primary side device.

** Better than nothing in my experience.

...... Phil

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A

Thanks Phil and have a good day!!!

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W

If you do that, the lightning has its way with the primary and secondary windings of the transformer; why not use an MOV on the input terminals?

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A

Hi whit3rd,

If I did that then Safety would be in question. Now that I know that others were not doing something of betterment I decided to scrap the idea.

Better to purchase a plug in surge protector.

Les

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