Circuit Breaker Testing & Maintenance - Air, Oil, Vacuum, & SF6 Types
Circuit Breaker Testing & Maintenance Is Essential To Ensuring The Continuous Operation Of Your Facility & Electrical Equipment.
When circuit breakers fail to operate properly, repairs can be expensive and time consuming. Our circuit breaker testing services in tandem with our infrared inspections ensure that your system is protected as it was designed.
PowerCom will inspect and perform all required tests and adjustments per manufacturer specifications on your circuit breakers. We will ensure the integrity of your circuit breakers before they are placed into service.
HIGH CURRENT TESTING - PRIMARY INJECTION
It is necessary to periodically test your low voltage circuit breakers for proper response under overload and fault current conditions. Primary injection testing is the only means of providing an accurate test of over current devices and current transformers. This verifies their settings and ensures that the electrical distribution system is properly protected. A complete system test is performed on all circuit breakers with static trip devices.
SECONDARY CURRENT INJECTION TESTING
Secondary current injection tests are performed using specially designed power supply units and test sets. Each equipment manufacturer has their own specific test set and power supply. Secondary injection testing only tests the solid-state trip unit, the test allows checking of the trip unit without using primary current. Secondary current testing is normally done when the circuit breaker is closed but is not carrying any current. If the secondary current injection testing shows that the solid-state trip unit is not functioning properly, the trip unit should be replaced. PowerCom has a full range of secondary current injection test sets from manufacturers like Eaton/Cutler Hammer, Square D, Siemens, ABB, General Electric (G.E.), and more.
INSULATION RESISTANCE TESTING - MEGGER TESTING
The insulation resistance test is a DC evaluation test of the insulation and gives a reliable indication of the presence of moisture, contamination or breakdown in the insulation. This test also establishes a benchmark for future comparative tests.
CONTACT RESISTANCE TESTING
If contacts are not maintained on a regular basis, resistance builds up due to repeated arcing, which in turn reduces the contacts’ ability to carry current. This test indicates the quality of mating of the contact surfaces and pivot points. Contact resistance should be maintained as low as possible to reduce localized heating and power losses
STATIC TRIP CONVERSION
By converting your low voltage circuit breakers you can retain the rugged, superior construction qualities of the older style circuit breakers while only replacing the breakers’ weaknesses—that being the dashpot mechanism. The result is a low voltage circuit breaker superior in many ways to the new compact breakers at a fraction of the cost. Also, by replacing the old, obsolete dashpots with a full electronic trip device, you add the dimension of breaker interchangeability that was not possible before without completely retesting and setting.
CIRCUIT BREAKER OVERHAUL
This service enhances the reliability and extends the useful life of your existing circuit breakers at a fraction of the cost of a new circuit breaker. PowerCom will completely disassemble, inspect, recondition, and also perform all adjustments and tests required to put your circuit breaker in pristine condition. We will also warranty that circuit breaker for one year, excluding parts.
CIRCUIT BREAKER LOANER PROGRAM
Completely overhauling a circuit breaker requires substantial labor and time; therefore, PowerCom understands the need to supply a spare circuit breaker during the reconditioning of yours. We provide this service to you at no charge. We also provide you the option of purchasing this breaker as a spare.