Vachom/iStock/Thinkstock
537240006
537240006
537240006
537240006
537240006

Good Vibrations

July 18, 2017
CBVA provides a 3D graph that can be quantitatively analyzed to provide insight into the condition of the breaker.

A few years ago, a tool for vibration analysis on circuit breakers became feasible due to the incorporation of other tools, such as a condition based maintenance algorithm. It’s called “circuit breaker vibration analysis” and is often abbreviated as CBVA.

CBVA provides a 3D graph that can be quantitatively analyzed to provide insight into the condition of the breaker. One big advantage of CBVA is it can be used to collect first trip data. Prior to CBVA, the normal practice in breaker maintenance was to manually open the breaker before performing any maintenance. This means losing the first trip data forever. Therefore, you’d have no idea if that breaker would actually have opened when it is supposed to.

This is important because most breakers sit with no maintenance, or the maintenance that is performed is incorrect or inadequate. By capturing first trip data, you can evaluate the maintenance that has been performed (or not) on that breaker.

CBVA testing requires operating the breaker, so performing it requires coordination with the operations people, but it doesn’t necessarily require a scheduled shutdown as does normal breaker maintenance. You could use it as an interim test procedure, especially if equipment undergoes routine switching (e.g., shift changes).

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.