| 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
 | Inspect for physical damage. |
| Inspect mechanical operations. |
| A contact resistance test shall be performed. |
| An insulation resistance test shall be performed. |
| Complete primary injection test on all functions (except on
medium voltage). |
B. Cleaning
| Contact fingers. |
| Main contacts. |
Low and Medium Voltage Air Circuit Breaker Reconditioning:
A. Inspection and Test
| Inspect for physical damage. |
| Inspect mechanical operations. |
| A contact resistance test shall be performed. |
| An insulation resistance test shall be performed. |
| Complete primary injection test on all functions (except on
medium voltage). |
B. Preparation for Reconditioning
| Remove old trip units. |
| Remove mechanical assembly. |
| All parts reconditioned. |
| Re-assemble breaker. |
C. Inspection and Test
| Inspect for physical damage. |
| Inspect mechanical operations. |
| A contact resistance test shall be performed. |
| An insulation resistance test shall be performed. |
| Complete primary injection test on all functions (except on
medium voltage). |
Low and Medium Voltage Air Circuit Breaker Modernization:
A. Inspection and Test
| Inspect for physical damage. |
| Inspect mechanical operations. |
| A contact resistance test shall be performed. |
| An insulation resistance test shall be performed. |
| Complete primary injection test on all functions (except on
medium voltage). |
B. Preparation for Modernization
| Remove old trip units. |
| Remove mechanical assembly. |
| All parts reconditioned. |
C. Custom Engineering & Manufacturing
| Re-assemble breaker. |
| Install complete solid state package. |
D. Inspection and Test
| Inspect for physical damage. |
| Inspect mechanical operations. |
| A contact resistance test shall be performed. |
| An insulation resistance test shall be performed. |
| 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
| Inspect for physical damage. |
| Mechanical operational tests shall be made in accordance with
manufacturer's instruction manual. |
| Check alignment for fit in cubicle. |
| Check tightness of connections. |
B. Electrical Tests
| A contact resistance test shall be preformed. |
| 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. |
| Long time delay shall be determined by primary injection at
three hundred percent (300%) pick up current. |
| Shortime pick up and time delay shall be determined by primary
injection of current. |
| Instantaneous pickup current shall be determined by primary
injection. |
| Adjustments shall be made for final settings in accordance
with customer's prescribed settings. |
| 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: info@ptsbtr.com.
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