REPAIR/ MAINTENANCE OF HT/LT SWITCH GEARS, PANELS, TRANSFORMERS, CABLES AND CONNECTED WORKS AT DMDE AREA AND CE RND AREA UNDER AGE E/M

Excavating in trenches, n exc 1.5m wide and n exc 1.5m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n.exc 10 sqm on plan and n exc 1.5m in depth and getting out in hard/dense soil complete all as directed.

Returning, filling in, including spreading, leveling, watering and well ramming in layers not exc 25 cm thick using soil complete all as directed.

Removing excavated material to a distance exc 250m but n exc. 500m and depositing where directed at a level n exc. 1.5m above the starting point (Soils) complete all as directed.

Supply and spreading natural dry, clean river sand in trenches for cushioning of cable complete all as directed.

M&L for brick protection with common burnt bricks sub class ‘B’ of size 230x115x75mm for cable protection complete all as directed.

S&F unreinforced precast concrete cable cover class HV type 1 flat of size 300mmx 180mm x 40mm complete all as directed.

Supply, laying, testing and commissioning of Cable with Stranded Compacted Circular Aluminium Conductor, 11000Volts, UE, Conductor Screened with Extruded Semi-conducting compound, XLPE Insulated, Insulation Screened with extruded semi-conducting compound in combination with copper tape cores laid up, inner sheath of Thermoplastic tape, galvanised flat steel strip armoured and overall Extruded PVC Type ST-2 Outer Sheathed cable conforming to IS:7098/II/85 of size 120 sqmm, 3 core with appropriate lugs including taking down unserviceable cable complete all as directed.

All as per item No 7.00 here-in-before but 95 sqmm 3 core complete all as directed. Make for item srl No 7 & 8 - Havells/Universal/Gloster/Polycab

M&L in repairs for cable jointing kit for 11000Volts (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as directed.

All as per srl item No 9 here-in-before but 50 sqmm to 95 sqmm all as directed.

M&L in repairs for cable jointing kit for 11000Volts (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as directed.

All as per item No 11 here-in-before but 50 sqmm to 95 sqmm all as directed. Make for item Srl No 9 to 12 : Raychem/M-Seal/3M

M&L for GI tubing of 100 mm bore 'Light Grade' for protection of HT cable with all fixing accessories laid in trenches/walls including taking down unserviceable GI tube complete all as directed.

M & L for providing of standby rented transformer of suitable capacity after receiving the complaint of non working of existing transformer of capacity 100 KVA to 315 KVA within 12 hrs of time frame before taking the existing transformer to the workshop from the site. The job included disconnection the existing transformer and shifting of rented transformer in place of the existing transformer including electric connection. Till the existing transformer get repaired/rewinding of the transformer done at workshop the rented transformer should be inside in good condition as per the satisfaction of Engineer-in-Charge

M&L for cutting and removing grass, plants, bushes of the 2/4 pole structure area including surrounding of transformer plinth and dispose the cut grass, plants, bushes to be taken out or destroyed by the contractor to a distance exceeding 2 KM from the site of work complete all as specified and directed by Engr-in-Charge.

M&L for spreading and leveling of 40mm graded stone aggregate over stone dust (0-3mm) in transformer yard including excavation and removal existing debris complete all as directed by Engr-in-charge. Note : After ramming stone dust layer will be of minimum 25mm thickness

M&L for Cutting and removing tree branches of any height and of any size, hanging on HT/LT lines, street lights, and the cut tree branches / trimming and shall be removed to a distance exceeding 2 km and not exceeding4 Km from the site of work complete all as directed

Material and Labour for cutting existing BT road/PCC of size 45cm x 60cm for taking out/laying of underground cable/pipe and including necessary earth work and refilling the same in layers well ramming including watering as required and matching with the existing surface with 200mm thick PCC 1:2:4 type B1 and curing the same with wet gunny bags and removing debris to a distance not less than 50m complete all as specified and as directed .

S&F Laying LT UG cable heavy duty armoured with aluminum conductor multistranded PVC insulated and sheathed with suitable lugs including taking out old unserviceable cable complete all as directed for following sizes: -

2 core 10 Sqmm

4core 16 Sqmm

3.5 core 25 Sqmm.

3.5 core 35 Sqmm.

3.5 core 50 Sqmm.

3.5 core 95 Sqmm.

3.5 core 120 Sqmm.

3.5 core 185 Sqmm.

3.5 core 240Sqmm. Note: - .Excavation & earthwork, sand cushioning and brick protection shall be measured and paid separately under relevant items. Make for item 19.01 to 19.09 : Havells/Universal/Gloster/Polycab

S&F in replacement Alluminium lugs of following sizes:- Make : Dowell/Jainson

95 to 120 sqmm

16 to 35 Sqmm

S&F MCCB four pole 250 Amps, 415 volts 36 KA, including taking out old unserviceable MCCB complete all as directed.

S&F MCCB four pole 160 Amps, 415 volts 36 KA, including taking out old unserviceable MCCB complete all as directed.

S&F MCCB four pole 100 Amps, 415 volts 16 KA, including taking out old unserviceable MCCB complete all as directed.

S&F MCCB four pole 63 Amps, 415 volts 16 KA, including taking out old unserviceable one complete all as directed.

S&F Change over switch 200 amps, four pole,415 amps with all accessories & suitable lugs including taking out old unserviceable change over switch complete all as directed.

Supply and fixing switch Air break Gang operated triple pole mechanically operated with GI operated rod, insulator (wire isolator type) and steel frame with operating mechanism worked from ground level vertical/Horizontal type, for current rating upto 200 Amps, HT 11000 volts including locking arrangement with six lever lock and painting the steel surfaces with two coats of aluminimum paint over a coat of red oxide primer including taking down unserviceable switch air break complete all as directed.

Supply and install Horn gap fuse assembly (solid core insulator type) and steel frame etc suitable for HT 11000 Volts with HT fuse element upto 50 amps including taking down unserviceable fuse assembly complete all as directed.

Supply and fixing drop out expulsion fuse assembly single pole mounted on insulator (two isolator type) and steel frame etc suitable for HT 11000Volts grade with burried fuses & HT fuse element up to 50 Amps including taking down unserviceable drop out expulsion fuse assembly complete all as directed.

M&L for lightining arrestor for outdoor fuse expulsion type complete with all fittings, transmission class earthed system discharge capacity 65 KA suitable for 11000 volts grade including taking down unserviceable lightining arrestor complete all as directed. Make for item srl No 27 to 30 : OBLUM/British Electric/ LET/Lanco

M&L for Aluminum conductor, steel reinforced (ACSR) of size 6/2.11 mm (rapid) not exceeding 2 mtr long for jumper connection between lightning arrester and pin insulator, pin insulator and AB switch, AB switch and HG fuse, drop out expulsion to transformer, including necessary lugs, binding wire, heavy duty PG clamps, PVC sleeves with R, Y, B colour code including taking down unserviceable aluminium conductor complete all as directed. Make: - Raychem/Transpower/Denson

M & L danger notice plate of 1.6mm thick Mild steel sheet vitreous enameled white, with letters, figures and conventional skull and bones in signal red color and fixed with MS clamps, bolts and nuts of approved size for HT 25 x 20cm size including taking down unserviceable danger notice plate complete all as directed.

Overhauling of transformer by disconnecting the HT and LT side supply, dismantling the clamps, bolts, nuts & washers, lifting the transformer from structure by using crane and transport to the workshop to carry out the repair by draining out the transformer oil through the drain plug, removing the top portion, lifting the primary and secondary winding without disturbing or damaging the core and the coil, clean the bottom portion of the transformer tank by removing the deposited material, clean and keep the primary and secondary winding with core in electric ovan minimum for 48 hours to enhance the insulation valve of the windings, supply and fixing breather pipe and packing, silica jel, oil level indicating transparent glass with marking minimum and maximum oil level indication, HT and LT side bushes assembly, gaskets and oil seals set including taking down u/s items and reassembling the transformer, refilling the transformer oil, reinstallation, testing and commissioning of the transformer should be carried out at required locations as directed for the following capacities:

100 KVA to 160 KVA capacity transformer

210 KVA to 315 KVA capacity transformer (Make - Essenar/HIT)

Note: The rate quoted shall be deemed to include the following: (i) Overhauling of Transformer shall be done by the technician from manufacturer's of transformers (ii) The required transportation, Crane, repairing tools shall be arranged by the contractor. (iii) De-hydration of the transformer oil should be carried out to improve BDV to withstand operational voltage before refilling (iv) Leak test to be carried out and rectified by brazing, welding etc before re-filling of the dehydrated transformer oil. (v) If any damage occured during repair/testing of transformer then the responsibility lies with the contractor for rectification without any extra cost. (vi) Standby distribution transformer shall be arranged by the contractor till the existing transformer is serviced/repaired.

Supply and filling of Transformer oil suitable for distribution of transformer with di-electric strength of BDV 60 KV complete including removal of unserviceable oil complete. Make - Power oil/Castrol/Servo

S & F in replacement of LED phase indicator lamp set (R,Y,B) all as specified and directed by Engineer-in-Charge

M&L for Plain Cement concrete 1:2:4 type B-2, (using 40mm graded aggregate) 100mm thick as in path/floor including demolition of old concrete and removal of debris outside MOD land complete all as directed.

Filtration of cooling/insulation oil of HT/LT transformer and carbon deposit from the oil through straight line oil filtration plant, extracting the moisture contents and shall withstand 40 KV for one minute dielectric strength, testing the oil for dielectric strength and acidity before and after filtration and submitting the test result all as directed including topping up of the oil in the transformer of Capacity 100 KVA (Pratap Colony) Note: - For topping up of the transformer oil will be measured and paid separately.

All as per srl item no. 38 here in before but for Transformer of capacity 160 KVA (SERA)

All as per srl item no. 38 here in before but for Transformer of capacity 210 KVA ( CE (R&D) Office Complex & VVRA).

All as per srl item no. 38 here in before but for Transformer of capacity 250 KVA ( Diber & CE (R&D) Residential Area)

All as per srl item no. 38 here in before but for Transformer of capacity 315 KVA (DMDE)

M & L for painting to steel tubular pole with aluminium enamel paint of 9.00 Mtr including cross arms, clamps any size and nuts, bolts etc with one coat of aluminium synthetic enamel paint including preparing the surfaces free from finish particals and making the smooth surface and numbering on pole with black ground such as pole number and source of supply, painting with radium paint around the pole at width of 10cm, similar three rounds from 1.5 m GL top on circumference of pole complete all as specified and directed.

S&F security light fitting bracket made out of GI tubing 40mm dia light grade of size 1.5m long, bent to shape including clamp for bracket made out of 50x6mm MS flat iron with necessary nut & bolts, washers complete and taking down unserviceable bracket complete all as directed. Make : Tata/Jindal/Oswal

S&F Pole junction box, made up of sheet moulding compound (SMC) type with hinged type door and locking arrangement, white colour of size 280x170x130mm outside and 240x130x110mm internal dimensions comprising 01 No-16 Amps capacity kitkat fuse, aluminium busbar-04 Nos, earthing terminals, bolts & nuts and connecting up cables with aluminium terminal lugs including suitable size clamps, bolts, nuts and washers fixed on pole complete and taking down unserviceable junction box complete all as directed Make - Sintex or equivalent ISI marked

Supply, replacement, installation, testing and commissioning of LT distribution control Panel , Kiosk type 415 Volt, 4 wire AC 50 Hz, factory made, out door type double door, both side opening, (front and rear side) weather and vermin proof panel having degree of protection IP-54 & made out of CRCA fabricated out of sheet of 3.15 mm outer structure and 1.6mm for internal structure with duly powder coated, CPRI approved, factory made fabricated and CPRI approved, 415 volts, with locking arrangement, powder coated MS angle iron base frame with legs of size 40 X 40 X 60mm and 60cm long grounted with PCC 1:3:6 type C-1 for foundation filling with platform 100 X 75 X 15 cm above ground level floor including cable entries with gland for incoming and out going cable connection, aluminium bus bar 4 strip rating 500 amps, including coloring with RYB & Black including letter written of pattern and description as directed with supply and fixing the following accessories pre-wired and connected along with suitable cable gland, lugs etc. all as specified and directed including taking out of unserviceable existing LT panel board and consisting of the items listed hereinafter.(Drawing of Panel and connections shall be approved by Engr-in-Charge before starting the panel work.)

S & F in replacement of silica gel in breather assembly different capacity of transformer as specified and directed by Engineer-in-Charge

Making Primery/Secondary coil with insulating copper wire of required gauge craft paper cotton tape HT/LT insulation as per specification of old transformer including making of coil as required of any capacity of transformer of any voltage and range including transportation and all as specified and directed.

Attending the External electric major complaints which the outsourcing electricians are not able to complete by deputing highly skilled electrician as and when complaint received by JE (E/M)/ Engineer-in-Charge at different sites i.e CE R&D, DMDE, VVRA, Pratap Colony, Ombir Colony and Gopal Colony. Note:- The spares will be measured and paid separately. The electrician to reach the complaint site within 3 hrs of receiving of complaint on phone/ Whatsapp etc. failing which a penalty of Rs 500/- per hour will be levied on the contractor as penalty. Note:- One electrician and one helper/ day shall be measured as one Job

S&F in repairs bus bar chambers wall/pole/angle iron based mounted of capacity 100 Amps 8 way with necessary connecting arrangement like clamp, angle iron , nuts & bolts etc complete all as directed.

S&F in repairs bus bar chambers wall/pole/angle iron based mounted of capacity 200 Amps 6 way with necessary connecting arrangement like clamp, angle iron , nuts & bolts etc complete all as directed.

S&F Air termination point vertical type single pointed made with 12mm dia 300mm long copper rod including necessary fixing arrangement with aluminium boits, nuts,lead wasters etc. complete and incl provisin of GI tubing grade 40mmdia,300mm long embedded in PCC block (size 30cm X30cm X 30cm) one end and other end fitted with air termination rod incl taking down old termination rod complete all as specified and directed.

S&F aluminium strip of size 25 x 3.15 mm horizontal/ Vertical down conductors and incl epoxy insulator bus bar type 40mm thick at an interwal of 60 cm apart for lightening protection on roof and for down conductors including all fixing arrangments with aluminium nuts, bolts & washers complete all as per IS-2309-1989 and testing incl taking down old aluminium strip all as specified.

S&F Galvanised from strip of size 32 x 6 mm from earth pit to test point provided all around the bldg for lightening protection laid in trenches /fixed to walls on eposy insulators with screws etc and connecting up incl taking down old galvanised strip complete all as directed.

S&F Change over switch 630 amps, four pole, 415 Amps with all accessories, enclouser & suitable lugs including taking down old unserviceable complete all as specified.

S & F Air Circuit breaker 4 pole, 415 volts, Electrical drawout type with microprocessor release of capacity 800 amps all as specified and Directed.

Replacement of Earthing complete with galvanized steel earth plate electrode 600 x 600 x 6 mm thick, buried directly in ground vertically to a depth not less than 2.25 meters deep below ground level with top edge of the plate not less than 1.5 Mtrs below normal ground level connect to GI strip 32 x 6 mm as earth lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel up to 7.5 meter length including connected to earth plate including necessary excavation & earthwork, PCC (1:3:6) type C-1 earth chamber, 40 mm thick RCC cover 1:2:4 mix with 6mm dia nominal reinforcement @ 150 mm c/c both ways etc complete all as shown in electrical plate No 5, connected to earthing test point complete including testing on completion all as specified.

Material and labour for erection in position including tubular swaged pole type 410 SP-37 (9.50 meter long) complete with cast iron base plate, final taper plug, nut, screws and top cover all as specified and including the following:- (a) Excavation in trenches not exceeding 1.5 meter wide and 2 meter deep for pole foundation and getting out in soft/ loose soil, returning filling in the excavation of soil after the pole in foundation remning earth around in layer not exc 25 cm thick and disposal of surplus soil to a distance not exc 50 meters. (b) Material and labour for providing PCC 1:4:8 type D-2, using 40mm graded stone aggregate as in foundation, 600X600 mm cross section planting depth 1.8 mtr for concrete casing the pole upto GL complete all as directed. (c) Material and labour for providing PCC 1:3:6 type C-2, using 40mm graded stone aggregate for plinth block/colour above GL 300 mm high and 450 mm dia all as directed. (d) Material and labour for painting of pole externally with one coat of black bituminous paint (upto planting depth) and above plinth block/concrete collar with two coat of alluminium paint over a coat of red steel primer including preparation of surface including painting of 30cm wide blue bands 3 Nos. with synthetic enamel paint in alternate layer upto the height of 1.5m above plinth block. (e) Material and labour for writing letter or figures (Block, Roman, Italic as Indian) with thick synthetic enamel paint of approved shade not exc hight in numbering of pole all as directed.

Dismantling of UNSV LT tubular pole after taking down ACSR conductor, insulators cross arms including breaking PCC up to ground level etc.

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