provision of 11 kv rmu at bkt , supply , installation , testing and commissioning of 11 kv ( e ) , 630 amps , 21ka for 3 sec , sf6 insulated , extensible outdoor type , rmu ( ring main unit ) 4-way comprising of 1 no 630 amps , motorised load break switches ( comprising one no . incomers ) & 3 nos . load break switch ( lbs ) as outgoing , inside robotically / manully welded stainless steel ( non ferrite non megnetic grade ) tank having min . thickness 2 mm having ip 67 degree of protection . rmu should be provided with copper busbars internal , external as well as earthing busbars should be of copper complete all as specified and comprising of :- , ( a ) 1 no 630 amp 21ka motorised operated load break switch with built in earth swith as incomming with:- ( i ) mechanical position indicator ( on / off / earthed ) . ( ii ) ct with ratio 50 / 1a , 2 . 5 va , cl-1 . 0 for metering . ( iii ) fault passage indicator ( iv ) live cable indication ( v ) cable termination bushing suitable for 1 run size upto 120 sq mm 3 core xlpe cable ( vi ) cable termination cover boots ( push on type ) ( b ) 3 no 630 amp 21ka motorised operated load break switch with built in earth swith as outgoing with:- ( i ) mechanical position indicator ( on / off / earthed ) . ( ii ) live cable indication ( iii ) cable termination bushing suitable for 1 run size upto 95 sqmm 3 core xlpe cable ( iv ) cable termination cover boots ( push on type ) , ( c ) one no . operationg handle for manual operation . ( d ) manometer with green & red zone for indicating pressure of gas inside the tank fitted on rmu ( e ) safety interlocks shall be provided as per relevant iec / is standards and manufacturers directions . ( f ) battery and battery charger 7 ah , i / p 230 volt , o / p 24 v dc . ( g ) pcc 1:2:4 . type b1 using 20 mm graded aggregate for foundation of rmu as per recommendations of manufacturers of directed by eic . , note : ( i ) any other parts / items not specified above but have been required essential for smooth and safe functioning of the rmu system shall be deemed to inclusive in quoted rate . ( ii ) the pre commissioning test of rmu shall be carried out in presence of sei before completion of the work . ( iii ) all arrangements for testing shall be responsibilty of the contractor and the cost of t&p and other charges deemed to be included in quoted unit rates . make: abb / siemens / schneider / c&s , supply and laying or fixing or passing through pipe , xlpe insulated , screened , pvc bedded , galvanised steel wire orstrip armoured , electric power cable ( heavy duty ) with aluminium conductor , 11000 volts grade earthed 95 sqmm 3 core nominal cross section stranded conductor complete all as specified and directed . note: - excavation & earth work , sand cushioning , bricks protection & gi pipe where reqd . shall be measured & paid separately . , excavation in trenches not exc 1 . 5 m in depth and not exc 1 . 5 mtr wide including getting out in soft / loose soil for laying of cable complete all as specified and as directed . , returning filling in including leveling spreading watering and well ramming in layers not exceeding 25 cm thick in soft / loose soil complete all as specified and directed . , removing of surplus soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1 . 5 mtr above the starting point complete all as specified and as directed . , supply and laying dry , course sand as in cushioning for cable in trenches , laid to uniform thickness of 23 cm ( 15 cm over the cable and 8 cm under the cable ) and gentaly punned down to 18 cm thickness complete all as specified and directed . note :- sand will be measured after punning . , supply and laying un-reinforced precast concrete cable covers , factory made , class-hv , type-1 , flat , as per is 5820 , of size 450mmx180mmx40mm laid dry complete all as specified and as directed . , supply and fix cable jointing kit for 11 kv ( e ) grade cable for in door termination , heat shrink type , joint complete with jointing material and accessories suitable for xlpe , armoured , aluminum conductor cable of size 95 sqmm 3 core complete all as specified and directed . , supply and fix cable jointing kit for 11 kv ( e ) grade cable for outdoor termination , heat shrink type , joint complete with jointing material and accessories suitable for xlpe , armoured , aluminium conductor cable of size 95 sqmm 3 core complete all as specified and directed . , m&l for earthing complete with galvanized steel earth plate 600x600x6 mm thick buried directly in ground ( earth pit not less than 2 . 25 mtr deep below normal ground level ) with top edge of plate not less than 1 . 5 mtr below normal ground level connected to galvanized iron strip size 32x6mm as earthing lead by means of bolt , nuts , check nuts and washer of galvanized iron or steel besides welding of all joints as shown in drawing and including excavation and earth work , g . i . pipe light grade 40 mm bore for protection of g . i . strip from earth electrode to and including the earth test point of galvanised iron / steel of size 75 x75x 25 mm , supplying and laying charcoal dust , common salt pcc 1:2:4 type b-i using 20 mm stone aggregate for chamber and ms angle iron frame 40x40x3mm and rcc cover 40 mm thick ( 1:2:4 ) type bi using 20 mm graded stone aggregate reinforced with 8 mm dia tmt bars @ 75 mm c / c both ways with ms handle 12 mm dia , round , pgi funnel and wire mesh , 20 mm dia gi pipe light grade for watering all as shown in plate no 3 of ssr part i of 2009 and connected to earth test point incl testing complete all as specified and directed . note:- cost of earthing strip & gi pipe 40mm up to 7 . 5 m shall be deemed to included in quoted rates .