OVPD-TM Over Voltage Protection Device with Test Mode

Planes these days have expensive electronics, from glass panels to lithium batteries, that need to be protected from an over voltage occurrence if your regulator fails. Your regulator controls the voltage output of your charging system, and if you have “unregulated” voltage event, your charging system can exceed the level of protection your electronics have and permanently damage them.

Some charging systems have over voltage protection as a standard feature, while others such as automotive engines do not.  This device works as a crowbar that will automatically and instantly shut your alternator off  once the voltage exceeds 16.1V so that high voltage levels do not reach your electronics and destroy them.  This can also easily be added to a charging system that does have over voltage protection so you have redundancy.  This is the safest and easiest way to protect you electronic investments in your plane.

This device is designed to “crowbar” the Circuit Breaker by applying a short circuit electronically and “pop” the current Alternator Field Circuit Breaker when voltage is over 16 Volts to protect all of your electronics in your vehicle.