LV & MV Breaker Service Details

 

Power Products and Solutions, offers our customers three main services when it comes to the maintenance of their medium and low voltage air circuit breakers.  The three main services we offer are breaker repair, solid state retrofit, and breaker remanufacturing.  (Please review our ‘Shop Service List’ on this page for other services performed in our shop.) 

Every medium and low voltage air breaker will at some time need to be repaired, retrofitted, or remanufactured.  Most of the time if a breaker needs any of these services, it is identified during a routine preventative maintenance shutdown and can be serviced before the problem causes any damage to the electrical service or gear.  If a breaker is found to need serving during routine preventative maintenance testing and you do not have a spare breaker, Power Products will be glad provide you with a replacement or exchanged breaker while your breaker is being serviced to limit any downtime to your production or manufacturing process. 

In those unforeseen cases when a circuit breaker fails while in service, we can provide the customer with a replacement or spare breaker in a timely manner to get their electrical system back on line.  When the failed circuit breaker arrives at our shop, we can perform diagnosis testing of the breaker to determine the cause of the failure and provide the customer with a firm price for the repairs.

Air Circuit Breaker Articles of Interest

MV and LV Circuit Breaker Repairs and Retrofit

                Reconditioned Breakers Keep Radio Telescope Up & Running

                Are Reconditioned Breaker a Good Idea?

FAQ

Q: I am having a problem with nuisance tripping with one of my air breakers.  What could be causing the tripping?

A: There are three main possibilities for the cause of the nuisance tripping of the air breaker.  The first thing to look for is to see if your breaker has a Ground Fault trip unit installed.  If a Ground Fault trip unit is installed on the breaker, the Ground Fault indicator will inform you if the breaker tripped on Ground Fault.  If Ground Fault is the cause if the tripping, call your local electrical testing agency to find the cause of the ground fault.  The second possibility is that an additional load was recently introduced to the breaker causing the tripping. After the additional load was added to the breaker, someone either neglected to change the trip setting or did not increase the setting enough to accommodate the additional load. This is a mistake that is often made during the installation of new equipment or electrical panels and usually goes unnoticed until the change of seasons.  At that time, then seasonal equipment loads are reintroduced to the breaker, the breaker may experience nuisance tripping. And third, but not last, is if the breaker has a solid state trip unit installed, you will need to have a electrical testing agency perform diagnosis testing on the trip unit to determine if the trip unit is the case of the tripping.

 Q: What is the different between a retrofitted breaker and remanufactured breaker?

 A: When a breaker is said to be retrofitted, it has had the trip unit replaced or up-graded to a newer style trip unit.  And in most cases, the CT and control wiring was also changed.  A manufactured breaker is a completely overhauled breaker.  The breaker is completely broken down, all metal parts are checked for ware and then cleaned using a vibrating clean machine, all warn out or broken parts are replaced, breaker frame are cleaned and repainted, a new trip unit installed, and then reassembled and tested.

·   Commissioning

·   MV Circuit Breaker Repairs and Retrofits

·   LV Circuit Breaker Repairs and Retrofits

·   Protective Relay Testing and Calibration

·   Circuit Breaker Testing

·   Battery Testing

·   Motor Testing

·   Meter Calibration & Testing

·   Switchboard & Panelboard Acceptance Testing

 Shop Service List