Work of overhauling and Arresting of Gas leakage of SF6 Circuit Breakers ABB make at 132KV Substation Usawan and Siemens make at 132KV SAS Substation Bilsi respectively under ETD Budaun

Amount

Dismentalling of Y-Phase Pole of 132KV SF-6 Circuit Breaker ( Siemens make ) of 132KV Bilsi-Budaun Line at Bilsi end for attending the gas leakage. The job includes dismentalling & erection of the same pole after attending the gas leakage including cost of labour T&P etc. required for execution of work.

Inspection and Rectification of gas leakage of 132KV SF-6 Circuit Breaker ( Siemens make ) type 3AP1FG of 132KV Budaun-Bilsi Line. The job includes opening of Y-Phase assembly from upper & lower terminal flanges. Cleaning of all grooves of flanges and porcelains with petrol, scrubber pad and acrylic solution, replacement of all O-ring of the pole and gas pipe fitting by applying anabond adhesive. Reassembly of pipe then evacuation of pipe upto 760mm.Hq. After testing of vacuum for 12hrs. and satisfactory result, refilling of SF-6 gas upto required level. Checking of proper operation of Circuit Breaker from local and remote. All materials, T&P except SF-6 gas required for execution of work will be arranged by the contractor at his own cost.

Major overhauling of Mechanism assembly of 145KV SF-6 Circuit Breaker ( ABB make ) installed at 132KV Usawan-Budaun Line at Usawan end. work includes overhauling of control valve assembly by replacement of control valve seat, O-ring P-80 and roller C/D, Overhauling of holding latch. Opening of pneumatic cylinder, closing spring etc. DE rusting and greasing of the NRV, safety valve, opening of reservoir, cleaning of reservoir alongwith replacement of O-6mm and 12mm. gas pipe assembly. Checking and adjustment of air pressure switches and gas pressure switches. Checking and retightening of all electrical connections. Measurment of closing and tripping time of Circuit Breaker. Measurement of contact resistence of circuit breaker.

Power System and Controls

SWITCHGEAR AND TRANSFORMER CARE CENTRE