Tender For Provision Of Rmu And Allied Works At Af Station Bamrauli; 1 Excavation in trenches , not exceeding 1.5 m wide and not exceeding 1.5 m in depthfor foundationetc and getting out in soft/loose soil complete all as specified and as directed. 2 Returning, filling in, including spreading levelling watering and well ramming in layers not exceeding 25 cmas in soft/loose soil complete all as specified and as directed. 3 Removing excavated soilto a distancenot exceeding 50 m anddepositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and as directed. 4 M&L for natural river sand as cushioning of cables including spreading and punning downcomplete all as specified and as directed.Note : Punned thickness shall be measured for payment purpose 5 Supply , laying, jointing and testingin replacement of undergroundHT 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. 6 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. 7 Supply and laying un-reinforced precast concrete cable cover class HV, type 1 with peak size300 mm x 180 mm x 40 mm of approved make complete all as specified and directed . 8 M&L 80 mm bore galvanisediron pipe, light gradewith all fittings, laid in trenches,under roads, drain paths, fixed to poles/walls with mild steel clamps, bolts, nuts and washers complete all as specifiedand as directed. 9 M&L 50 mm bore galvanisediron pipe, light gradewith all fittings, laid in trenches,under roads, drain paths, fixed to poles/walls with mild steel clamps, bolts, nuts and washers complete all as specifiedand as directed. 10 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 11 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 numberfault passage indicator with each incoming and outgoing mechanism for interlocking arrangements for powered proof as perrelay 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 impulsewithstand voltage-should be minimum 125KVP(iv) Rated current for ring main feeder -630A (v) Rated currentfor 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 accidentalcontact 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: 12 (i) Manual VCB with position ON-OFF manual spring charging mechanism with in built spring charging handlemechanically latched ON/OFF push buttons (ii) Manual line disconnector with three position switches ON-OFF-EARTH,(iii) Auxiliary switches 6 NO + 6NC with wiring,(iv) IDMT Numerical relay for Over current andearth fault protection,(v) Three phase definite time over current and short-circuit protection with variabletripping times (ANSI 50/51) 3 Phase over Current protection with selectable inverse time characteristics anddefinite time short-circuit current element (ANSI20/51) definite (vi) Capacitive Voltage indicator (vii) Padlocking facility (vii) Dedicated CTs for protection, (ix) Operating handle -1 number (xii) Right angled Cable boots -3x sets(x) Capacitor(xi) Any other standard accessories required for efficient operation of RMU as per OEMrecommendations. 13 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 approvedNote :- (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 aggregateover 100 mm thickstone hard core of guage not exceeding 63 mm complete.(iii) RMU shall be tested in manufacturers workshopby the rep of Accepting officer before dispatch. 14 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 gradedstone 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 ofplate, 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 connectionand testing on completion.
