Description

Circuit Breakers Servicing, Testing & Commissioning

Our team of experts can give you all kinds of Testing and commissioning & servicing   of circuit breakers . We can work all across the voltage levels LV,MV,HV and EHV. We carry out Testing & commissioning for AIS as well GIS circuit breakers . We have our own advanced testing equipment to carry out necessary testing of  the transformer and to get the work done quickly without depending on anybody.

Services offered in circuit breakers Testing & commissioning: 

Offline Testing 

•  Insulation Resistance Measurement
•  Dynamic Contact Resistance Measurement (DCRM)
•  State Contact Resistance Measurement (CRM)
• ·Timing Measurement
•  SF6 Gas Dew Point Measurement
•   SF6 Gas Leakage Test
•   Vacuum Interrupter Test ( VIDAR-only for VCB)
•   Functional Check (Remote Trial)

Online Testing 

Partial Discharge Measurement (For all Switchyard Equipment)

Thermography ( For All MV/EHV Equipments) 

Circuit Breakers Servicing : 

• Cleaning of breaker with CRC
• Removal of old grease and re-greasing the same with recommended grease.
• Check condition of arcing contact and gap between fixed and moving arcing contacts shall be checked.
• Checking the reset mechanism, tripping of breaker through push button
• Checking tripping of ACB through protection release
• Tripping of ACB manually through volt metric release.
• Checking and adjust freeness of DN and volt metric release trip rod
• Checking presence and proper tightening of hardware.
• Checking presence of all circlips
• Checking condition and alignment of jaw contact with cradle terminals
• Checking condition of ACB wiring and replace if required
• Checking and adjusting gap between hylam sheet and side plate
• Checking proper closing of all poles together
• Checking working of anti pumping device in case of EDO ACB
• Checking alignment of SIC and it’s operation
• Checking scrapping earth alignment
• Checking condition of arc chutes
• Checking U/V release pick up and drop off
• Checking ACB tripping through shunt release
• Checking motor operation in case of EDO ACB
• Checking closing coil operation in case of EDO ACB
• Checking continuity and proper changeover of aux contact block
• Checking of release by secondary injection for O/L, S/C, E/F
• Setting of release as per the load
• Checking the healthiness of CTs
• The spare parts, accessories would have to be provided by the customer.