REPLACEMENT OF 245 KV SF6 CIRCUIT BREAKER INSTALLED ON 220/132 KV 200 MVA ICT -III OF 220 KV SUBSTATION SAHUPURI UNDER ETD-III VARANASI

Amount

Loading/Carriage/Unloading

Shifting and loading of 220 KV SF6 gas circuit breaker, ABB make on private vehicle with the help of hydra/crane at 220 KV S/S Mirzapur [Natwa].

Safely carriage of 220 KV SF6 gas circuit breaker, ABB make from 220 KV Substation Mirzapur[Natwa] to 220 KV S/S Sahupuri by private vehicle [Distance Approx. 70 Km]

Unloading of220 KV SF6 gas circuit breaker, ABB make from private vehicle with help of hydra/crane and shifting to store of 220 KV Substation Sahupuri.

Erection and Dismantaling of 245 KV CB

Dismantling of old 245 KV ABB make SF-6 CB which consist dismantling of breaker poles, cables, air reciver tank, pole assembly unit and interrupting chember unit by opening of jumpers, cutting of earthing strip, opening of cable connection etc. The shifting of dismantled breaker and its accessories to store at 220 KV S/S Sahupuri..

Fabrication of MS channel and plate for base for new poles in place of old casted foundation by cutting, welding holes etc. providing nut-bolt for proper tightening the base of poles of three phases at the fabricated base structure. Painting the structure by one coat red oxide and two coat paints.

Complete erection of new 245 KV SF-6 CB pole unit assembley along with structures and cubicals (Marshalling box) at plinth as per drawing and mechanical requirement, thereafter interconnection of copper pipes from pole unit of breaker as per drawing, including providing of MS Channel plates of size 4feetx4feet42inch for the base of new 245kV Circuit Breakers

Laying of control cables provided by the manufacturer/department for interpole wiring and proper termnation at pole unit and inside breaker cubical as per draying after proper glanding.

[a] 2C X 2.5 mm2

[b] 4C X 2.5 mm2

[c] 6C X 2.5 mm2

Termination of control cable after proper glanding inside breaker cubical and ferruling as per drawing work includes proper tracing of cables coming from ACDB and DCDB panels.

[a] 2C X 2.5 mm2

[b] 4C X 2.5 mm2

[c] 6C X 2.5 mm2

Jumpering after cutting and bending of ACSR Moose conductor in proper size and safe clamping with PG clamps at 220 KV Bus bar and terminal pad of poles.

Earthing of following equipments with existing earthmat by cutting, bending and welding of 50x6 mm mS flat which shall be provided by department.

Breaker cubical (Marshalling box)

Structures of breaker pole unit assembly at two diagonally opposite.

MAA BARAHI CONSTRUCTION (BID ID -5072370)

R.K. ENTERPRISES (BID ID -5069536)