PROVN OF 11 KV HT VCB AND HT UG CABLE AT HALDIA UNDER GE (I) (CGN) KOLKATA

Amount

Supply, install, testing & commissioning of extendable indoor type 11 KV 3 phase, 250 MVA, 50 HZ, 26.3 KA, HT totally enclosed free standing, steel sheet clad, cubical pattern, HT panel switch board with locking arrangement for panel doors, complete with short time with stand current sec with 3 Nos 630A PVC sleeved copper bus bars and comprising of VCB 400A -01 Nos confirming to latest IS/IEC standards comprising of the followiing:- 1. Incoming TP vaccum circuir breaker 11 KV 400 A, horizontal draw out type, horizontal isolation, rated current 400 A -01 Nos each fitted with :- (a) Manually changing & closing mechanism, 1- Motorised spring charged closing mechanism. (i) Mechanical close/strip knob - 01 set. (ii) Mechanical ON/OFF indicator - 01 No. (iii) Mechanical spring charged / free indicator -01 No. (iv) 1- Set of 6 Nos + 6 NC Aux contact block -01 No. (v) DC 24 volt, shut strip -01 No (b) One set space heaters 1x60 watt -03 nos, 230V AC with switch humidity sensor and thermostat. (c) VCB ON & OFF switch, trip circuit heating, auto trip, service position, test position. (d) One set of Red/green indicating lamps for circuit breaker on/off auto trip indication. (e) 3 resin cast type twin secondary current transformer of ratio 100-50/5-5a, class of accuracy 0.5/5P10, burden 10VA/10 VA burden for protection & metering. (f) 1-3 phasing cast draw out type potential transformer ratio 11 KV root 3/ 110 V class 0.5 accuracy, 50 VA/ph burden, complete HT & LT fuses and connected to incoming side (one per VCB) (g) Luminous push button for trip circuit check. (h) Microprocessor based numerical relay with local display & communication port. (j) Multifunction Electronic Digital Meter consisting of measurement of current, voltage frequuency, KW, KWH, KWARH etc type PM 500. (k) 1 No- Cut out plate for cable entry for 120 sq mm 3 core cable. (l) PVC FRLS copper cable single core multistranded of size 2.5 sq mm for all control wiring. (m) MCB DP 32A -01 No for control supply. (n) HT Trivector meter 3phase, 4 wire 11 KV/110V/5A, class 0.5S, 50 Hz working with CT/PT. NOTE:- (i) Each VCB triping coil voltage should be 24 Volt DC. (ii) Quoted rate is inclusive of Power pack unit for backup supply for the relay. (iii) The quantity of two VCBs will act as one unit such as 1 No Iincoming and the other will act as Outgoing. (iv) Cost of foundation and earth work is deemed inclusive of the quoted rate. (v) The contractor shall provide VCB drawing for approval of GE. (vi) The praposed VCB shall be integrated with exsting VCB of L&T make with suitable size of bus bar links. (Note: Linking of VCB shall be measured and paid separately under revelant items).

Supply, laying and testing cross linked polyethylene (XLPE) insulated, PVC sheathed cables for working voltages 11 kV, three phase, earthed system, 3 core, screened, armoured power cable, 120 sqmm of nominal area of conductor, aluminium conductor, ISI marked as per IS 7098 (Part-II): 2011 laid in trenches or under floors making all connections with necessary glands lugs bushing complete all as specified and as directed.

M & L for cable route indicator made out of CI plate 150 dia, 8 mm thick, with lettering "MES HT Cable", using synthetic enamel paint, welded or bolted onto 35 mm X 35 mm X 6 mm angle iron, 600 mm long duly painted with anti-corrosive paint in brown colour & including necessary earthwork and excavation, embedded in PCC 1:2:4 type B1 using 20 nominal size graded crushed stone aggregate of size 400 mm X 400 mm X 300 mm complete all as specified and as directed.

Material and labour for Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm complete all as specified and as directed.

Cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrink type complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size120 sqmm complete all as specified and as directed.

M & L for auguring under road, pavement, hard standing by trenchless technology using latest boring technique and necessary machine including insertion of HDPE pipe of 150 mm dia complete all as specified and as directed. Note : HDPE pipe shall be measured and paid separately.

Supply only high density polyethylene pipe (HDPE) of pressure rating PN 6(0.6 Mpa), material grade PE 63 and nominal diameter 150 mm including all fittings and fixtures for insertion into horizontal boring complete all as specified and as directed.

Material and labbour for the integration of the existing L&T make VCB with new VCB of any make by providing suitable size of bus bar link and integrating both the VCB including all necessary item, nut bolt gasket and encloser complete all as specified and as directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm X 600 mm X 6 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to earthing lead of 32 mm X 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No. 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 40 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing 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 foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or water supply pipes lines etc or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth 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 in soft/ loose/ hard/ dense soil complete all as specified and as directed.

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

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 levelling complete as specified and directed .

Supply & laying unreinforced precast concrete cable cover class HV type 1, flat shape, dimension 300 mm X 180 mm X 40 mm as per IS 5820: 1970 complete all as specified and directed.

Shri Amarnath Sah

MPM ELECTRIC

Ultimate Solution Company

UNIVERSAL TRADING

SOMIK DAS