COMPLETION OF INCOMPLETE WORK FOR PROVN OF TRANSFORMER OF 250 KVA, 300 KVA AND 400 KVA AT AF SALUA

Amount

Excavation in trenches not exceeding 1.5 meter in wide and not exceeding 1.5 meter in depth for formation etc n exc 10 sq m on plan and getting out in soft/ loose soil complete all as specified and as directed

BLANK

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

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

Supply, laying and joining in trenches, ducts/ fixed on poles, XLPE insulated, screened, PVC bedded, galvanized steel wire armoured heavy duty 11000 Volts grade, HT, FRLS with PVC inner and outer sheath, 3 Core, 95 Sqmm stranded aluminium conductor (earthed) cable, conforming to IS 7098 (Part-II) all as specified and as directed.

Supply and laying in trenches fix on pole or passing through pipe testing XLPE insulated in screened PVC bedded galvanized steel wire armoured electric power cable (heavy duty) with stranded aluminium conductor, 11100 Volts grade, cross sectional area 500 Sqmm 3.5 Core including aluminium cable lugs and glands of suitable size and ratings complete all as specified and directed.

M&L for sand cushioning/ covering for under ground cable protection and consolidated and compacted with clean dry sand (spread in layer of thickness 23 cm, pumped down gently to 18 cm) complete all as specified and as direrected. (Note - Punned thickness will be measured at the time of measurement and payment)

Supply and laying un-reinforced precsst concrete cable cover, class HVP, type 1 as per IS-5820 with peak, size 300 mm x 180 mm x 40 mm laid flat, dry, laid perpendicular to the length of under ground cable in trenches for cable protection complete all as specified and directed.

Supply and fixing cable root indicator for HT underground cable of 11000 Volts, duly marked/ engraved "CABLE HT 11 KV" bolted with 40 x 6 mm flat iron member of height 0.60 m and 80 mm dia CI Plate of block complete all as specified and directed. (Note- MS flat iron, CI plate and PCC block shall deemed to be included in the unit rate.)

Supply & laying 100 mm bore HDPE pipe PN 10 for cable protection on pole/ wall/ floor or in trenches and drain/ culvert etc complete with necessary clamps, nuts, bolts, washers, sockets and making good the disturbed surfaces complete all as specified and directed.

Supply, installation, testing and commissioning of indoor type vacuum circuit breaker of capacity 11 KV, 400, Amp, 3 Pahse, 3 Wire, 50 Hz, having a fault level of 250 MVA at 11 KV, 13.1 KA breaking capacitym totally enclosed single bus bar for each phase,floor mounted, metal clad, indoor extensible type flush fronted, draw out type, horizontal/ vertical isolation type with electrical and mechanical interlock and automatic safety shutter gear including padlocking arrangement, isolation plugs, assembly of vacuum interrupters, with epoxy support insulations and self-aligning finger type isolating contacts, track having integral racking with necessary interlocks (for insertion and withdrawal of VCB), manual and automatic motor charged independent closing/ tripping spring, trip free operating mechanism with closing and tripping push buttons and mechanical breaker, including inbuilt battery backup system & all standard fittings and accessories of following specifications :- A Specification for VCBs (i) Bus Bar cahmber with 3 phase copper bus 1000 Amp rating duly insulated-01 set (set of three). (ii) Electrical trip coil 110 volt DC-01 No (iii) Electrical shunt coil 110 Volt DC-01 No (iv) CT chamber incorporating 3 Nos single phase resin cast current transformer ratio 100/50/5-5 class 1.0 for metering & class IP10 for protection. (v) 3 Phase, 3 Limb draw out type bus connected Epoxy potential transformer, ratio 11KV/Root 3/110V/Root 3 AC accuracy 1.0, burdon 200 VA-01 Nos (vi) Digital ammeter 0 to 100 Amp (100% of CT ratio) for 3 phase-01 No (vii) Digital voltmeter rating 0 to 12 KV, for 3 phase-01 No (viii) DIGITAL Load manager for amps, volts, KW,, KVA, KVAR, and PF type QUASER of Enercon/L&T - 01 No

Item No 11.00 Contd/- (ix) Three phase over current and earth fault digital numeric relay (over current (INST 50) & IDMT-51-3 pole & earth fault (INST (50N) & INST (50N) & IDMT 51N-single pole), phase under current/loss of load (37), thermal over load (49/51) & negative sequence 46 auxiliary supply 20-110 V AC/DC CT output contacts 2 No + NC, rating-5, O/C Is=20-200% in step of 5% E/F Os=5-80% in step of 5%. The features and specifications confirming to IEC 60870-5-103 & model No MI COM P 122 of AREVA or equivalent make of ABB or Siemens. (x) Auxiliary relay with 4 N/O & N/C-01 No (xi) Master trip circuit and supervision realy-01 No (xii) TNC switch and LR switch - 01 No (xiii) Heat control switch-01 No (xiv) RYB, ON/OFF, spring charged and discharged & VCB trip indiccations - 01 Set (xv) Space heater with thermostat-01 No (xvi) Operating counter-01 No (xvii) Rear cable box suitable for 95 Sqmm 3 Core XLPE cable (xviii) Spriong charging motor with starter 230 VAC - 01 No (Note : All shifting and civil work required for commissioning of new panel shall deemed to be included in the unit rate.

All as per item No 11.00 here-in-before but for capacity 630 Amps, 18.1 KA and ruturing capacity 350 MVA at 11 KV complete (Note : All shifting and civil work required for commissioning of new panel shall deemed to be included in the unit rate.

Supply, installation, testing and commissioning sub station DC power sources for protection relay control circuits and metering circuits of HT 11 KV VCB's panel and comprising the following items :- (a) 110 Volt DC 40 Amps Automatic float cum boost charger with 415 Volts, 3 phase 4 wire input to hold power for minimum one hour. (b) 11o Volt, 55 Nos (2 V each), 160 AH VRLA (Value regulated lead acid batteries) sealed maintenance free batteries. Charger should have integrated DC Distribution boost consisting of 08 Nos DC MCB 16 A double pole including all metering and protection system. (d) Standard accessories as per manufacturer's catalogue

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination cold shrink type end joint complete with jointing material and accessories suitable 3 core XLPE armoured Al conductor cable of size 95 Sq mm complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for straight through cold shrink type end joint complete with jointing material and accessories suitable 3 core XLPE armoured Al conductor cable of size 95 Sq mm complete all as specified and directed.

Supply, installation, testing and commissioning of power transformer, capacity 400 KVA step down, outdoor type trolley mounting, double copper wound core type 3 phase 50 Hz AC, oil immersed with 'ONAN' type cooling with external cooling tubes/ radiators having no load voltage ratio 11/433 KV (corresponding to principal tapping) delta connected on primary side (HV incoming) and star connected on secondary side (secondary out going) in accordanc with vector fround symbol (DYN-11) conforming to IS 2026-1977 and having off load tap changer in the steps of 2.5% on HV side to take care of voltage from (±) 7.5% (±) 5% to (±) 2.5% to give output of 433 V secondary side and including initial oil filling to appropriate level, control cable, and following standard fittings complete :- (i) Oil conservator with oil fitting hole cap and drain plug. (ii) 01 No of prismatic oil level gauge mounted on conservator tank with first fill of charge upto maximum level. (iii) Silica gel dehydrating brether with oil seal and with first fill of charge. (iv) Pressure release valve with automatic resetting arrangement after release of pressure-01 set. (v) Adequate No of thermometer pocket including one thermometer. (vi) Top oil filter valve. (vii) Bottom oil filter cum drain valve. (viii) Rating diagram and terminal marking plate. (ix) Earthing terminal-02 Nos (x) Lifting lugs-01 Set (xi) Jacking pads-01 Set (xii) Under carriage with 4 Nos of plain rollers. (xiii) Air release plug on main transformer tank. (xiv) Adequate Nos of cooling radiators. (xv) 150 mm dial type oil temperature indicator with maximum read pointer and resetting device. (xvi) 150 mm dial type winding temperature iindicator with maximum read pointer resetting device. (xvii) Air insulated cables box on HV and LV side. (xviii) Bucholz realy with alrm and trip contacts and with 01 No shut off device. (xix) Necessary wiring from trip terminals of bucholz relay to control panel of HT switch gear. (xx) Terminal box for alrm and trip contacts.

Note : 1. The transformer shall be tested as type test, routine test as per IS 2026 in presence of GE/ his rep. 2. The contractor shall submit QAP (Quality Assurance Program) after the 15 days from palcement of order for transformer testing to factory. Transformer shall be dispatched after inspection clearance by inspecting officer. 3. The contrcator/ manufacturer shall furnish original MILL corticated (paid voucher and test certificate) of the CRGO manufacturer. 4. The manufacturer / contractor shall furnish the diameter of LV and HV copper winding and its total resistance. The stary losses shall be specified in percentage terms. The percentage of NO Load and full load losses shall be as per is 2026. 5. The contractor shall get the approval of GE for the make of the transformer they paln to procure. 6. Prior to manufacturing the general arrangement drawing design details of the transformer shall be got approved by the GE. 7. Seperat6e neutral bushing shall be brought out for earthing.

Supply & fabrication for mounting of distribution transformer steel structure trolley with 04 (four) Nos wheel of tier size 7.50-16 complete with wheel base drum, centre axel, load spring two set with nut bolt, bishes complete including toeing break and screw jack including parking blocks made out of wooden/ steel size of steel trolley length 03 mtr width 1.9 mtr and ground clearnce 0.6 Mtr by using steel sheet at bottom and wall of thickness 4.0 mm 9Two side), wall with XPM wire mesh work with hard drawn steel wire fabric aperture hole not exc 4 cm x 4 cm dia 2 mm 9Two side) and openable door with locking arrangement channel size MC 100 and angle of siz e40 x 40 for chasis, frame, nut, bolt and washer incl welding and lath work incl priovn of toeing any suitable for toe with vehicle and one stand made out with channel MC 100m with adjustable manner for stay to trolley complete all as specified and directed by Engr-in-Charge. Note 09:42 All tool pertaining to trolley i.e wheel sopanner and other size D spanner/ bnox spanner shall be supplied by contractor in above quoted rates.

M&Lfor Earthing complete with galvanized steel eatrth plate electrode 60 cm x 60 cm x 60 cm thick buried directly in ground (Earth plate do not less tah 3.0 mtr deep below ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to GI earth strip 25 x 4 mm (upt 7.5 metres) by means of bolts, nuts, check nuts and washers of galvanized iron or steel etc complete as shown in electrical Plate No 3 of SSR Part-I (2009), protected by 40 mm bore light grade galvanised iron pipe and other end connected to earth test point as directed including funnel with watering pipe of 40 mm bore light grade galvanised iron wire mesh charcoal or coke and common salt in alternate layers of 15 cm (compacted thickness) around the earth electrode and Concrete earth pit in PCC (1:3:6) type C-1, 50 mm thick precast RCC 1:1:5:3 type A-1 cover slab reinforced with 8 mm dia mild steel TMT bar @ 15 cm centre to centre both way and suitable handle of 10 mm dia round bar, including necessary excavation earth work in soft/ loose soil and disposal of spoil to a distance n .exc 50 m and necessary testing complete all as specified and as directed. (Note : (i) The quoted rate included the arte of MAgnesium Sulphate of 40 Kg per earth pit poured with salt and charcoal. (ii) To obtain earth resistance value and prepare test sheet of newly constrcuted earth pit shall be responsibility of contractor. (iii) If the desired earth resistance i.e less tah 1 Ohm is not obatined the earthing shall be re-done by contractor without any extra cost to the Govt.

STAR ENTERPRISES