PROVN OF 11 KV RMU AT BKT

Amount

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.

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