PROVN OF RMU AND ALLIED WORKS AT AF STATION BAMRAULI

Amount

Excavation in trenches , not exceeding 1.5 m wide and not exceeding 1.5 m in depth for foundation etc and getting out in soft/loose soil complete all as specified and as directed.

Returning, filling in, including spreading levelling watering and well ramming in layers not exceeding 25 cm as in soft/loose soil complete all as specified and as directed.

Removing excavated soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and as directed.

M&L for natural river sand as cushioning of cables including spreading and punning down complete all as specified and as directed. Note : Punned thickness shall be measured for payment purpose

Supply , laying, jointing and testing in replacement of underground HT cable XLPE insulated ,screened PVC bedded , galvanised steel strip or wire armoured electric power cables (heavy duty) 11000 Volts grade with stranded aluminium conductor of size 95 Sqmm 3 Core laid in trenches/ducts/along poles/ through pipe under road etc complete all as specified and as directed.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and as directed.

Supply and laying un-reinforced precast concrete cable cover class HV, type 1 with peak size 300 mm x 180 mm x 40 mm of approved make complete all as specified and directed .

M&L 80 mm bore galvanised iron pipe, light grade with all fittings, laid in trenches,under roads, drain paths, fixed to poles/walls with mild steel clamps, bolts, nuts and washers complete all as specified and as directed.

M&L 50 mm bore galvanised iron pipe, light grade with all fittings, laid in trenches,under roads, drain paths, fixed to poles/walls with mild steel clamps, bolts, nuts and washers complete all as specified and as directed.

M & L for boring holes (manually) under road, hard standing without damaging surface for 50 or 80 mm dia GI pipe etc complete all as specified and as directed

Supply, installations, testing & commissioning of 11 KV of rating 630 Amp RMU unit outdoor type (IP-54) protection duly painted (Paint shade in painted Alu-Zn/RAL 7032 on sheet steel for door and covers), VCB type I RMU(RING Main unit) Four way comprising of three numbers insulated load break switch as outgoing and one number Vacuum Circuit Breaker as incoming inside. RMU should be provided with Copper Bus bar, one number fault passage indicator with each incoming and outgoing mechanism for interlocking arrangements for powered proof as per relay complete with all accessories as under. (a) RMU type installation Outdoor Extensible type, arc IEC: 62271-200 for design Manufacturing and testing. The RMU must have the following features/specification:- INCOMER-VCB should have following specification :- (i) Rated Voltage upto -12KV (ii) Rated power frequency withstand voltage -28KV (iii) Rated lighting impulse withstand voltage-should be minimum 125KVP (iv) Rated current for ring main feeder -630A (v) Rated current for VCB feeder -630A (vi) Rated short-time current-21 KA/3 Sec (vii) Rate Short making current -50KA (viii) Ambient temperature (-1 degree Celsius to +45degree Celsius), (ix) Degree of protection against accidental contact and ingress of foreign objects must be assured as under:- (aa) Main electric circuits : IP-67 (ab) Fuse compartment IP3X (ac) Operating mechanism -IPXC, (ad) Cable connection compartment-IPXC with site replaceable cable bushing. (xi) Each vacuum circuit Breaker includes:

OUTGOING :-(i) Each load break Switches includes the following:- (a) three position switches with position ON-OFF -EARTH (b) Manual operated spring mechanism ON-OFF-EARTH (c) Mechanical indicators for position ON-OFF-EARTH (d) Mimic diagram at the front facia of RMU, (e) Capacitive Voltage indicator, (f) Padlocking facility. (g) Fault passage indicator for Earth Fault (ii) Right angled Cable boots -3x sets Make of RMU: ABB/SCHNEIDER/SIEMENS as approved Note :- (i) Any other spares/material required for protection of transformer/VCB may be included as per design parameters. (ii) The quoted rate shall be demmed to include cost of PCC foundation and PCC plateform of suitable size 100 mm thick PCC 1:2:4 type B1using 20 mm graded stone aggregate over 100 mm thick stone hard core of guage not exceeding 63 mm complete. (iii) RMU shall be tested in manufacturer's workshop by the rep of Accepting officer before dispatch.

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6 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 ground level connecting to galvanised strip 32x6mm as earth lead by means of bolts, check nuts and washers of GI and earth wire protected by provision of GI pipe light grade,40mm bore including provn of concrete pit in PCC 1:2:4 type B-1 using 20mm graded stone aggregates with pit cover made out of cast iron of size 300mmx300 mm , minimum wieght 7.5 Kg as per relevant IS including frame, GI medium grade 20mm bore pipe for watering perforated at bottom 1.75 m long placed on top edge of plate, common salt and charcoal filling, test point made out of phosphorous bronze with fixing arrangement, funnel, wire mesh including excavation and earth work in hard/dense soil, returning filling in and removal of surplus soil to a distance not exeeding 50 m complete all as per electrical plate No 3 of SSR 2009 Part-I and necessary connection and testing on completion.

M/S MALHOTRA ENGINEERING WORKS (BID ID -3486126)

M/S VIJAY SINGH (BID ID -3492557)

Avion Industries (BID ID -3491346)