| Name of Work: MAINTENANCE/REPAIR/REPLACEMENT OF EXTERNAL ELECTRIFICATION ,HT/LT PANEL, VCB ,OCB , TRANSFORMER , HT/LT UG CABLE AND ALLIED WORKS AT RHQ (E) ,DHQ-5 ,KOYAMBEDU ,MOGAPPAIR , CGSD ,BMU , ROYAPURAM AT CHENNAI UNDER GE (I) CG CHENNAI. | |||||
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| Sl. No. | Item Description | Item Code / Make | Quantity | Units | |
| 1 | 1 | Excavation in trenches n.exc 1.5mtrs wide and n.exc 1.5 mtrs deep in hard /dense soil for laying underground cables and post holes, complete all as specified and as directed .. | 108 | Cum | |
| 2 | 2 | Returning, filling in, including spreading, levelling, watering and well ramming in layers n. exc 25 cms thick in hard/ dense soil, complete all as specified and directed . | 75 | Cum | |
| 3 | 3 | Removing surplus soil to a distance n. exc 50 m and depositing at a level n. exc 1.5m above the starting point, complete all as specified and directed . | 33 | Cum | |
| 4 | 4 | Supply and spread clean dry M sand in trenches including levelling, punning for cushioning of cables complete all as specified and as directed.\nNote : Punned thickness of sand cushioning shall be measured and paid. | 30 | Cum | |
| 5 | 5 | Supply and lay Fly ash bricks of size 230mm x 115 mm x 75mm to be laid on sand cushioning for protection of cable, complete all as specified and as directed. | 3200 | Each | |
| 6 | 6 | Material and labour for PCC 1:4:8, type D-2, (using 40 mm graded stone aggregate) as in foundation, filling and mass concrete, complete all as specified and as directed . | 2 | Cum | |
| 7 | 7 | Material and labour for PCC 1:3:6, type C-1, (using 20 mm graded stone aggregate) as in foundation / coping of poles including necessary form work and finishing the exposed concrete surfaces even and fair complete all as specified and as directed . | 3 | Cum | |
| 8 | 8 | Dismantling old unserviceable steel tubular pole or PCC pole of 9 metre long with necessary demolition of concrete foundation including excavation, earth work as required and removal of rubbish off the premises not exceeding 100 metres complete all as specified and as directed . | 1 | EACH | |
| 9 | 9 | Material and labour for Steel tubular swaged poles complete with cast iron base plate ,finial taper plug ,bolts ,nuts and screws ,type 410 Sp-31 (9.0 metres long) complete all as specified and as directed . Make : Note:- Excavation / Earth work , PCC, RFR, removal etc shall be measured and paid separately under relevent items. | 1 | EACH | |
| 10 | 10 | Dismantling cross arms of MS channel or angle section etc complete fixed on RCC / steel tubular poles carefully including separating and setting aside serviceable cross arms for reuse in the work and removing unserviceable cross arms and taken as credit complete all as specified and as directed. | 0.2 | Per Qtl | |
| 11 | 11 | Supply and fix cross arms, bracing, support, clamps etc made out of mild steel channel or angle section of required size and shape including clamp, back plate with bolts, nuts & washers drilled for insulator bolts, welding, bending cold or hot in any shape or size including all fixing arrangement on HT over head line and painted with two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and as directed. | 0.2 | Per Qtl | |
| 12 | 12 | Dismantling air break gang operated switches vertical / horizontal mounted including insulators and operating mechanism for repair/ replacement complete all as specified and as directed. | 1 | Each | |
| 13 | 13 | Supply ,install , test and commission air break switch ,gang operated , off load disconnection type ,out door , mechanically operated from ground level and mounted on 11 KV post insulators with and including MS channel base ,MS nuts,bolts for fixing to the poles of capacity 200 Amps, 3 phase and 3 insulators per phase complete with locking arrangement in ON and OFF position including necessary connections and fixing to the pole structure in position including painting the exposed steel surface with two coats of aluminium paint over a coat of red oxide primer complete all as specified and as directed. Make : Jaipuria Brothers/JSI/MEI | 1 | Each | |
| 14 | 14 | Dismantling drop out fuse vertical / horizontal mounted including insulators for repair/ replacement complete all as specified and as directed. | 1 | Each | |
| 15 | 15 | Supply and fix drop out fuses 11 KV ,100 amps capacity including MS nut,bolt and washers with barrel fuse expulsion type ,set of three including mounting on channel complete all as specified and as directed. | 1 | Each Set | |
| 16 | 16 | Dismantling lightening arrester of any type and size from position and removing from site complete all as specified and as directed . | 1 | Each \nSet | |
| 17 | 17 | Material and labour for Lightening arrester high tension distribution class expulsion type complete with all fittings ,discharge capacity 65 KA suitable for 11000 Volts complete all as specified and as directed . | 1 | Set of three | |
| 18 | 18 | Supply and replacement of 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 50 sqmm to 95 sqmm complete all as specified and as directed.Make:Denson/M seal | 1 | Each | |
| 19 | 19 | Supply and replacement of cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.Make : Denson/M seal | 2 | Each | |
| 20 | 20 | Supply and lay XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts grade of cross sectional area 16 sq. mm, 4 core in trenches / on truss / wall / floor through pipe with MS clampscomplete all as specified and as directed.Make:Gloster/CCI/Asian | 100 | RM | |
| 21 | 21 | All as per item no :20 here in before but of size 25 sqmm 3 1/2 core | 100 | RM | |
| 22 | 22 | All as per item no :20 here in before but of size 35 sqmm 3 1/2 core | 100 | RM | |
| 23 | 23 | All as per item no :20 here in before but of size 50 sqmm 3 1/2 core | 100 | RM | |
| 24 | 24 | All as per item no :20 here in before but of size 70 sqmm 3 1/2 core | 100 | RM | |
| 25 | 25 | All as per item no :20 here in before but of size 95 sqmm 3 1/2 core | 50 | RM | |
| 26 | 26 | All as per item no :20 here in before but of size 120 sqmm 3 1/2 core | 80 | RM | |
| 27 | 27 | Supply and replace GI tube medium grade 100mm bore galvanized with all fittings laid in trenches / road crossing for UG cable protection including dismantling and removing old GI tubing 100 mm dia and taken as credit complete all as specified and as directed .Make :Tata/Jindal/Prakash Surya | 6 | RM | |
| 28 | 28 | Supply and replace GI tube medium grade 80mm bore galvanized with all fittings laid in trenches / road crossing for UG cable protection including dismantling and removing old GI tubing 80 mm dia and taken as credit complete all as specified and as directed .Make :Tata/Jindal/Prakash Surya | 6 | RM | |
| 29 | 29 | Material and labour for straight through joints (epoxy) suitable for 3.5 core PVC insulated and PVC sheathed armoured LT underground cable with aluminium conductors including joint kits for making joints complete all as specified and as directed for following sizes of cable : - | |||
| 30 | 30 | 3.50 core cable 95 Sq mm | 2 | Each | |
| 31 | 31 | 3.50 core cable 120 Sq mm | 2 | Each | |
| 32 | 32 | Material and labour for painting of LT / HT steel tubular pole with one coat of aluminium paint and black paint upto 1.2 meter from the bottom of the pole after preparing the existing surface of the pole and marking the pole numbers as per existing pattern including fixing two nos of flourescent tape 50 mm width around the pole at 1.2 metre height complete all as specified and as directed. | 20 | Each | |
| 33 | 33 | Supply and fix (in replacement) MCCB 4 pole, 415 volts on panel mounted type with breaking capacity 36 KA magnetic thermal setting adjustable 70-100% including disconnecting the incoming / outgoing cable connections and re-connecting with suitable aluminum lugs / ferrules etc., after taking out the existing unserviceable MCCB and making good the disturbed surface for following capacity:- Make:Siemen/ABB/Scheneider \n | |||
| 34 | 34 | 63 Amps with breaking capacity 16 KA | 2 | Each | |
| 35 | 35 | 100 Amps with breaking capacity 16 KA | 2 | Each | |
| 36 | 36 | 160 Amps with breaking capacity 25 KA | 2 | Each | |
| 37 | 37 | 200 Amps with breaking capacity 36 KA | 1 | Each | |
| 38 | 38 | 250 Amps with breaking capacity 36 KA | 1 | Each | |
| 39 | 39 | 400 Amps with breaking capacity 36 KA | 1 | Each | |
| 40 | 40 | Material and labour for Earthing complete with copper earth plate electrode of size 600 mm x 600 mm x 6mm thick buried directly in ground ( earth pit not less than 2.25 metre deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level connected to copper earth strip of 32mm x 6mm by means of bolts, nuts, check nuts and washers of copper all as shown in electric plate No 3 connecting to earthing test point including necessory excavation in any earth strata, PCC chambers in PCC 1:3:6 type C1, RCC 1:2:4 type B1 cover slab 50mm thick with 8mm dia TMT HCR / CRS steel bars at 140mm C/C both way and lifting handle watering pipe of GI 20 mm dia medium grade, funnels, wire mesh, charcoal with lifting handle watering pipe of GI medium grade 20mm dia, wire mesh, funnel, lugs and charcoal, salt etc all as applicable and as per Electric Plate No 3 of SSR complete all as specified and as directed. | 5 | Each\n set | |
| 41 | 41 | Material and labour for disconnecting carefully electrical connection from HT / LT sides of the transformer, keeping them at safe side and taking out the transformer, outdoor type 200 to 400 KVA, 0.433 / 11KV, comprising the following step up, any make carrying out complete overhauling and comprising the following :-\n(a) Material and labour for lifting, transporting, handling the transformer to workshop and opening top cover of the transformer by unscrewing nuts, bolts, washers etc including disconnecting core assembly from HT / LT bushing and lifting the same gently and taking out from the shell (container/ body) of the transformer. | 1 | Job | |
| 42 | 42 | (b) Material and labour for draining out transformer oil from the above said transformer to a suitable capacity of container /drums and keeping it in safe coustody for reuse.\n(c) Material and labour for cleaning the transformer body from inside, removing deposited dirt / sludge/ foreign particles etc from the bottom / body of the transformer and drying / heating up the shell from inside before refilling of the transformer oil. | |||
| 43 | 43 | (d) Material and labour for checking the leakage of transformer oil from tank joints, bushings, inlet / out let valves , breather etc ,servicing, opening the transformer and disconnect the star and delta connection for HT and LT windings , testing the insulation resistance, cleaning and washing thoroughly core and windings of the transformer by hoisting down with clean dry oil conforming to IS 335 /1983, removing deposited dirt / sludge / foreign particles from the windings / core and revarnishing of the windings with super varnish including heating / drying / backing complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc all as per IS 1986-87 and directed by GE.\n(e) Lifting and refixing core assembly inside the transformer shell gently and carefully connecting of HT / LT / Neutral connections to the bushing assembly, fixing of tap change over including tightening of nuts,bolts, washers of the core to reduce humming noise complete all as directed to the entire satisfaction of GE. | |||
| 44 | 44 | (f) Varnishing the entire core assembly with insulating oil of approved quality ,heating and drying thoroughly, re -insulation paper, press pan paper, fevicol, sleeves and heating carefully inside chamber to got required megger value so as to obtain desired insulation resistance all as directed. \n(g) Re-fixing of the core assembly inside the transformer shell gently and carefully , conecting up with the HT / LT bushings , fixing of tap changer, connecting up with the neutral connections etc completeall as specified and directed by GE. \nNote: Necessary dismantling of core assembly for repair / rewinding and refixing shall be measured and paid under relevant items here in before all as specified and directed . | |||
| 45 | 45 | (h) Refilling the transformer oil in the shell of transformer only after carrying out filteration and heating up oil upto 105 degree C to achive required dielectric strength and submitting the test result before and after filteration of oil in the presence of GE on proper proforma duly signed. \n(i)Refixing the top cover including replacement of cork sheet / gasket 8mm thick, tightening of nuts / bolts / washers etc and replacement of breather with silica gel crystal type complete all as directed by GE.\n(j) Material and labour for carrrying out acidity test of transformer oil all as per IS-1866/1961 in presence of GE or MES representative authorised by him and submitting the test results on proper proforma duly signed. | |||
| 46 | 46 | (k) Cleaning / scrapping / brushing down and preparing the outer surface of the transformer body and painting with two coats of synthetic enamel paint over one coat of primer complete all as specified and directed by GE.\nNote:- \n(i) Any damage to insulators / bushes / windings etc while in the custody of the contractor shall be made good at no extra cost to govt. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody.\n(ii) The job taken for repair / overhauling should be complete with in 48 hours from the date of handing over of the individual transformer , failing which neccessary alternative arrangement to be made by the contractor at no extra cost. | |||
| 47 | 47 | All as per item no 41 here in before but transformer of capacity 100 KVA to 200 KVA \nNote -: (i) Filling up of the transformer oil will be measured and paid seperately. (ii) While taking transformer to the work shop the contractor has to temporarily install and connect transformer provided by the department as the same is catered for maintenance of essential services. \n(iii) Necessary rewinding of core if required will be measured and seperately | 1 | Job | |
| 48 | 48 | Material and labour for dehydration, filteration of transformer oil using stream line filter to obtain a dielectric strength above 40 KV, including all arrangement for DG set, filteration plant, filter paper etc complete all as specifiedand as directed . | 600 | Per Litre | |
| 49 | 49 | Supply and filling new transformer oil of approved make conforming to IS- 335 including filtertion of existing and tapped up oil so as to achieve IR value of the oil not less than 40 KV complete all as specified and as directed . | 200 | Litre | |
| 50 | 50 | Material and labour for rewinding of damaged / burnt out HT / LT coil , servicing of step down transfomer of capacity 100 to 400 KVA capacity 11000 / 433 volts, comprising the following : \n(a) Removing the transformer core assembly by un-screwing the nuts, bolts, washers of top cover, draining out the existing oil removing the HT / LT bushings etc and taking out the core gently with the help of neccessary tools arrangement complete and all as directed. \n(b) Dismantling and taking the burnt HT coils from the core assembly and cleaning the other coils and core assembly with CTC solution including removing the deposited dirt / foreign materials etc complete. \n(c) Rewinding the HT/LT coils with super enamelled copper winding wire of existing size including insulating materials etc complete , refixing the rewinded HT /LT coils on the core assembly connecting up with the tap changer etc complete all as specifiedand as directed . | 80 | Kg | |
| 51 | 51 | Material and labour for disconnecting and dismantling unserviceable, damaged LT bush, studs complete of 100 KVA Transformer any make 11/ 0.433 KV and replacing the same and supply and fix connecting LT porcelain bush with gun metal threaded studs of suitable lengths including metal rings / nuts / bolts / washers, rubber rings etc.( set of 4) complete all as specifiedand as directed . | 1 | Set | |
| 52 | 52 | All as per Item No 51 here in before but HT bush comlete ( set of 3 ) | 1 | Set | |
| 53 | 53 | All as per Item No 51 here in before but for 200 and 400 KVA transformer 11000 / 433 volt any make complete all as specifiedand as directed . . | 1 | Set | |
| 54 | 54 | All as per Item No 51 here in before but HT bush complete ( set of 3 ) for 200 and 400 KVA transformer 11000 / 433 volt any make complete all as specifiedand as directed . | 1 | Set | |
| 55 | 55 | Supply and replace transformer breather assembly with dry silca gel complete all as specifiedand as directed . | 2 | Each | |
| 56 | 56 | Supply and replace dry silca gel of transformer breather complete all as specifiedand as directed . | 2 | Kg | |
| 57 | 57 | Material and labour for cleaning / scrapping / brushing down and preparing the outer surface of the transformer body and painting with two coats of synthetic enamel paint for transformer of 200 to 400 KVA capacity complete all as specified and as directed . | 2 | Each | |
| 58 | 58 | Material and labour for taking out vacuum circuit breaker by disconnecting carefully electrical connection , incoming and outgoing from panel carefully Overhauling the spring charging mechanism, checking the vacuum gap,greasing and adjusting of moving parts and adjusting as required, cleaning all parts by CTC solution / emery paper as required and greasing the metallic and mechanical serviceable parts complete all as specifiedand as directed . | 2 | Job | |
| 59 | 59 | Supply and fix voltmeter selector switch suitable for operating voltage 110 / 220 Volt for HT / LT Panel complete all as specified and as directed. | 1 | Each | |
| 60 | 60 | Supply and fix ammeter selector switch suitable for operating voltage 110 / 220 Volt for HT / LT Panel complete all as specified and as directed . | 1 | Each | |
| 61 | 61 | Preparing the outer surface of VCB panel indoor type by removing the old paint / removing the rust and dent and painting with two coats of synthetic enamel paint of approved colour complete all as specified and directed . | 1 | Job | |
| 62 | 62 | Supply and fix in replacement of off load change over switch in sheet metal enclosure 4 pole ,200 Amps ,415 volts side handle operation along with fixing arrangements with suitable nut, bolts, washers, including terminating the incoming / outgoing cables with suitable aluminum lugs / ferrules with proper crimping and testing complete all as directed . | 2 | Each | |
| 63 | 63 | Material and labour for cutting the bituminous road in the size not exc 0.4 metre x 0.6 metre for laying of UG cables and making good with the existing surfaces after laying the pipe / cable complete all as specified and as directed . | 10 | RM | |
| 64 | 64 | Supplying, installing, testing and commissioning LT outdoor type panel board in repairs factory fabricated cubical kiosk type whether ermin proof, CPRI approved with locking arrangement and made out of MS sheet 3.0 mm thick suitable size of channel for base complete with 300 Amps rated copper bus bar chamber incl cable gland of suitable size and adequate nos and cabinet for housing mounting switch disconnection fuse unit metering eqpt prewired with suitable size of copper conductor and duly painted with one coat of red oxide paint and two coat of synthetic enamel paint powder coating mounted on PCC (1:4:8) platform commissioning washer chamber and panel board fixing an angle iron frame which is made out of 40 x 40 x 6 mm thick angle iron duly marked the incoming outgoing controls and comprising of the following :-\n(i) Incoming:- (a) MCCB 160 Amps Cap 36 KA, 4 P, 415V-01 Nos\n(ii) Outgoing:- \n(a) MCCB 100 Amps Cap.16 KA, 4P, 415 V -02 Nos.\n(b) MCCB 63 Amps Cap. 16 KA TP, 415 V -03 Nos\n(c) Digital multifunctional meter which show Voltmeter, Ammeter, PF and Frequency – 01 No.\n(d) Complete control panel wiring with 1.5 sqmm stranded copper conductor alongwith one set indicator lamp for R, Y & B for each incoming and outgoing feeder.\n(e) Lock pedestal 1 Nos.\n | 1 | Each Job | |
| 65 | 65 | Dismantling APFC panel carefully, removing the defective control device MCCBs / MCBs,capacitors, indicator cum push button switches, relays, contacts,CTs, internal wiring, cleaning all parts by CTC solution / emery paper as required and greasing the metallic and mechanical serviceable parts complete all as specified and directed by GE. Note:Spare parts required will be measured and paid under relevent items seperately. | 1 | Job | |
| 66 | 66 | Supply only relays BR 6000 suitable for 6 stage APFC panel\n Make: EPCOS/NEPTUNE | 1 | Each | |
| 67 | 67 | Supply only relays BR 6000 suitable for 8 stage APFC panel\n Make: EPCOS/NEPTUNE | 1 | Each | |
| 68 | 68 | Programming and tuning of relays suitable for APFC panel | 3 | Each | |
| 69 | 69 | Supply only capacitor suitable for APFC panel . | 100 | Per KVAR | |
| 70 | 70 | Supply only fresher fan suitable for APFC panel | 2 | Each |
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