| Complete Breaker Services:
No matter what brand of switchgear you own POWER TECH can repair or service it. From complete rebuilds to preventive maintenance POWER TECH is the company to call. Breakers like any other piece of equipment needs a regular preventive maintenance service. Especially if your switchgear is outside or in an area that is not environmentally controlled. Don't let your expensive electrical equipment deteriorate because of neglect. Below is a summary of what POWER TECH can do for you.
Low and Medium Voltage Air Circuit Breaker Testing:
A. Inspection and Test
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Inspect for physical damage. |
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Inspect mechanical operations. |
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A contact resistance test shall be performed. |
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An insulation resistance test shall be performed. |
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Complete primary injection test on all functions (except on medium voltage). |
B. Cleaning
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Contact fingers. |
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Main contacts. |
Low and Medium Voltage Air Circuit Breaker Reconditioning:
A. Inspection and Test
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Inspect for physical damage. |
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Inspect mechanical operations. |
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A contact resistance test shall be performed. |
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An insulation resistance test shall be performed. |
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Complete primary injection test on all functions (except on medium voltage). |
B. Preparation for Reconditioning
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Remove old trip units. |
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Remove mechanical assembly. |
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All parts reconditioned. |
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Re-assemble breaker. |
C. Inspection and Test
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Inspect for physical damage. |
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Inspect mechanical operations. |
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A contact resistance test shall be performed. |
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An insulation resistance test shall be performed. |
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Complete primary injection test on all functions (except on medium voltage). |
Low and Medium Voltage Air Circuit Breaker Modernization:
A. Inspection and Test
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Inspect for physical damage. |
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Inspect mechanical operations. |
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A contact resistance test shall be performed. |
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An insulation resistance test shall be performed. |
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Complete primary injection test on all functions (except on medium voltage). |
B. Preparation for Modernization
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Remove old trip units. |
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Remove mechanical assembly. |
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All parts reconditioned. |
C. Custom Engineering & Manufacturing
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Re-assemble breaker. |
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Install complete solid state package. |
D. Inspection and Test
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Inspect for physical damage. |
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Inspect mechanical operations. |
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A contact resistance test shall be performed. |
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An insulation resistance test shall be performed. |
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Complete primary injection test on all functions (except on medium voltage). |
Low Voltage Air Circuit Breakers 1000V or Less (Molded Case):
A. Visual and Mechanical Inspection
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Inspect for physical damage. |
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Mechanical operational tests shall be made in accordance with manufacturer's instruction manual. |
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Check alignment for fit in cubicle. |
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Check tightness of connections. |
B. Electrical Tests
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A contact resistance test shall be preformed. |
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An insulation test shall be performed at 1000 volts DC for one (1) minute from pole to pole and each pole to ground and across open contacts of each phase. |
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Long time delay shall be determined by primary injection at three hundred percent (300%) pick up current. |
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Shortime pick up and time delay shall be determined by primary injection of current. |
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Instantaneous pickup current shall be determined by primary injection. |
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Adjustments shall be made for final settings in accordance with customer's prescribed settings. |
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Auxiliary protective devices, such as ground fault or under voltage relays, shall be activated to insure operation of shunt trip devices. |
POWER TECH offers a complete line of Breaker services. An equipped Inspection Service Vehicle operated by an experienced POWER TECH Technician is prepared to provide advisory technical services, perform tests and recommend repair all on site. We also accept in shop breaker repair services. Complete Reconditioning and Modernization services available. Send us your breakers and we will fix them and send them back. Contact us with regarding your specific Breaker needs: RESCOTT@PTSBTR.COM.
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