SPL REPAIR/REPLACEMENT OF HT TWO POLE STRUCTURE TO RMU AT CH (CC) SUBSTATION UNDER GE E/M LUCKNOW.

Amount

Supplying, laying, jointing, testing and commissioning HT under ground electric power cable Crossed linked polyethylene ( XLPE) insulated, screened PVC bedded, galvanized steel strip or wire armoured electric power cable (heavy duty) with aluminum conductor, 11000 Volts grade suitable for earth system of 3 core 120 Sq mm cross sectional area size, ISI marked as per IS 7098 Part-2, laid in trenches/ laid under floor/ laid in ducts or fixed on poles etc. complete all as specified and directed. Note :- Excavation/ boring of road/ pipe shall be measured and paid separately under appropriate items.

S&F cold shrinkable, in door type, cable termination kit with all accessories suitable for 11 KV HT XLPE Cable of size 120 to 185 sq mm, connecting the cable in RMU, including all earth work and making good disturbed surfaces and making all connection in RYB phase sequence complete all as specified and directed.

S&F cold shrinkable straight through joint suitable for 120 sqmm, 3 core 11 KV HT XLPE cable by ensuring RYB phase sequence including all accessories and connections of cable in RMU complete all as specified and directed.

Supply, installation, testing & commissioning of 11 KV Outdoor type non- extensible RMU floor mounted with internal electrolytic grade copper bus bars, consisting of combinations of 3 nos 630 Amp fixed type motorized Vacuum Circuit Breaker (VCB) and Metering Module. All live parts, bus bars, LBSs connections of RMU shall be enclosed in one tank to avoid multiple interconnections & sealed for life robotically welded non magnetic and non ferrite grade stainless steel tank Grade 304 of minimum 2.5mm thick having IP67 degree of protection filled with SF6 gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation and shall have site replaceable bushings for ease of troubleshooting during breakdown.RMU should be complete with all accessories such as Terminal boots, VPIS, cable supports, all front cable terminations, mechanical indications for Load break switch ON/OFF, Manometer as per with IEC standards 62271-200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. Extensible Bushings, if applicable shall be bolted type top mounted outside the tank for connection of external bus bar .Also, the outer enclosure shall cover the full length of the switchgear, to ensure IP3X+IP54 protection for cable boxes . The unit shall be internal arc proof 21kA for 1 sec. for tank+Cable Box ,and tested and totally safe for human beings. The gas release & personnel safety with internal arc proof shall not depend on plinth design. The release of gas to be from the top of the unit, so that, even if the person is operating the unit, opening the cover, & there are personnels near the sides of the RMU/plinth, top release will ensure their safety.

The release in no case should be from any side or bottom of the unit, as the same is unsafe for the operating personnel / pedestrian or general public. Bidder shall provide type test report to prove compliance to the ‘Internal fault IAC-AFLR as per IEC 62271-200.Internal arc proof & testing shall be done with enclosure door in open condition, with switching devices in operation mode. The Vacuum Bottle shall be of same make as that of RMU to ensure better life cycle optimization for the product . The Manufacturer shall furnish performance Certificate for similar kind of RMUs in their own legal Name . Any Joint venture certificates / partnership with other firms shall not be considered. The unit shall include the following with all necessary standard fitting required at site. 630A VCB module for making & breaking of fault current along with Earth Switch of full making capacity Motor operated 630 A Vacuum circuit breaker having spring stored mechanism. Three position disconnector/earthing switch downstream vacuum circuit-breaker with pad-locking feature. Three position single spring mechanism for disconnector/earthing switch with pad-locking feature. “Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings. Short time breaking current - 21KA/ 3 sec Making Capacity - 52.5 kAp Auxiliary contacts - 1NO + 1NC Power frequency withstand voltage - 38KV Impulse withstand voltage - 98KV Nominal operating gas pressure - 1.4 Bar abs.

M&L Earthing complete with galvanized mild steel earth plate electrode 600x600x6.0mm thick, burried directly in ground to a depth not less than 2.25 meters deep below ground level with top edge of earth plate not less than 1.5 meter below normal ground level surrounded with adequate quantity of charcoal dust mixed with salt to a packed thickness of 15 cm all around the plate, using GI strip 32 x 6 mm as earth strip electrode bolted or riveted to earth plate at one end and connected to equipments at another end, GI earth strip encased in and including 40 mm dia GI 'light grade' pipe from upper end of earth plate up to equipments,20 dia bore GI pipe 'light grade' as water pipe from earth chamber to upper edge of earth plate, Test point , GI funnel with wire mesh fixed on water pipe and PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) as in pit chamber and RCC pit cover 50mm thick precast RCC 1:2:4 type B-1, duly reinforced with MS TMT bars 8mm dia @ 100 c/c both ways with 10mm dia MS round bar as in lifting handles, excavation, earth work including laying the GI pipe concealed in floor/wall all as described in electric plate of SSR Part I complete all as specified and directed. Note :- If the desired earth resistance is not found, earthing shall be redone by the contractor at no extra cost to the department.

M&L Unreinforced pre cast concerte cable cover comply with IS 5820:1970 and shall be of grade not lower than M20 HVP type-2 with peak, size 450x180x40 mm laid dry in trenches for the protection of underground cable complete all as specified and as directed.

Excavating in trenches, not exceeding 1.5 m wide and not exceeding 1.5 m in depth for laying of cables, pipes etc. and getting out including trimming the sides and forming bottom surfaces to required levels in soft/loose soil complete all as specified and directed and making good disturbed surfaces.

Returning, filling in, including spreading, leveling, and well ramming in layer not exceeding 25 cm thick in soft/loose soil complete all as specified and directed.

Removing excavated material (soils) not exceeding 50m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified.

Material and labour for river sand, washed and screened dry for cushioning to under ground cable in trenches below and around under ground cable including spreading and leveling complete as specified and directed .

S&F GI Pipes galvanized, “light grade”, laid in trench complete including fittings 80 mm dia. Protection for HT Cable protection all as specified and directed.

Dismantling / taking down existing unserviceable HT steel poles / struts, any size complete and transport to MES store yard for depositing to MES safe Custody all as specified and directed.

Dismantling taking down old cross arms, clamps, braces etc of any section from pole including nuts, bolts, washers from HT four pole / two pole structure complete all as specified and directed.

Dismantling insulator any type, any size room HT four pole/ two pole structure complete all as specified and directed.

Dismantling air break gang operated switches vertical/ horizontal mounted including insulators and operating mechanism and transport to MES store yard for depositing to MES safe Custody complete all as specified and directed.

Diamond Electric Co.

Sanjai sales and services

SEEMA ELECTRICAL