RRRV & Transient Vtg

Kindly be more specific when choosing your title. Normally you should write about your topic. Writing Electrical in an Electrical Engineering Forum sounds and looks weird.

Now for your question:-

I don't know what you mean by RRRV. But i will explain a bit about transients.

Transients (momentary spikes in voltage or current) can disrupt or damage the devices / equipment connected to signal or power lines. Common sources of transients energy coupled from lightning, electrostatic discharge and circuits experiencing a sudden change in current due to a switch opening or a short occurring.

As for their practical use. Transient protection devices attempt to re-direct the energy in these transients by taking advantage of the differences between the transient waveform and the intended signal or power waveform. The most common transient protection schemes limit the voltage amplitude, current amplitude or transition times on the circuit they are protecting.

I hope this information will help you. Other members will also guide you.

Regards,

DG EE

Without knowing what the abbreviations mean, one wouldn't really attempt to do so.