REPAIR MAINTENANCE OF HT ELECTRIC SYSTEM VCB RMU TRANSFORMER HT CABLE AT MAKARPURA AF STN BARODA

Amount

Excavation in trenches not exceeding 1.5 m wide and not exc. 1.5m deep and getting out in soft/ loose soil for laying of cable complete all as specified.

Excavation in trenches exceeding 1.5 m depth but not exceeding 3 mtr and 1.5 m wide and getting out in soft/ loose soil for laying of cable complete all as specified.

Returing, filling in trenches including spreading, leveling, watering & well ramming in layers not exceeding 25 cm (soft/loose soil) complete all as specified & directed.

Removing excavated material n.exc. 50 m and depositing where directed as a level n.exc. 1.5 m above the starting points.

Material & labour for sand filling with clean dry find sand unwashed including gently punning around cables in trenches/ducts for cable protection complete all as specified and directed by Engineer-in-Charge.

Supplying & Laying un-reinforced pre cast flat concrete cable protection cover of class HV, type I, size 300mm x 180mm x 40mm, factory made, complete all as specified and directed by the Engineer-in-Charge.

S&F framed work as in door or gate of angle or other section with gausset plates, rail, braces etc complete drilled for fixing of steel sheeting or other covering doors etc to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fitting also fastening and fixing complete conforming to Fe-410-0 or Fe-310-0.

M&L for cutting chasing in hard standing road/path/drain making holes in concrete wall etc for passing through of cable and making good as per existing by using PCC (1:3:6) type C-2 using 40 mm graded stone aggregate all as specified and directed.

Dismantling of U/S existing incl S&F anti-climbing device fabricated out of 50x6 mm FI 8 mm of 15 Cm long MS bar, 12 mm dia / flat spikes made out to shape all as specified and as directed .

M & L for PCC (1:4:8) type D-2 (using 40 mm graded stone aggregate) for foundation of the pole complete all as specified and directed.

M & L for PCC (1:3:6) type C-1 (using 20 mm graded black trap/granite/basalt stone aggregate) for coping of the pole including necessary form work complete all as specified and directed.

Dismantling & taking out unserviceable steel & iron items from poles i.e cross arms, bracing, supports, clamps and back plates etc. including nuts & bolts complete all as specified and directed.

Fixing only the serviceable MS cross arms, F1 clamp etc with and including acessories such as bolt, nuts and washers etc as obtained from item No 12 here in before on electrical pole at any location with & including painting of steel surfaces with two coat of aluminium paint over a coat of red oxide primer after preparation of old surfaces all as specified and directed.

Supply & fixing cross arms, bracing, supports, clamps and back plates fabricated from structural steel sections including nuts & bolts , washers , welding bending cold or hot , drilling holes for bolts in any shape or size as indicated or directed and inclusive of two coats of aluminium paint over a coat of red oxide primer complete all as specified and directed by Engineer-in-Charge.

Dismantling of stay assay complete with insulators etc and removing from the site.

M&L for stay assembly for HT poles comprising of 20mm dia, 2.15 mtr long galvanized stay rod , having 7 / 3.15mm GI stay wire stranded and 300mm X 500mm X 6mm thick MS stay plate, complete all as shown on electrical plate No 1 of SSR, Part-I with and including all necessary fittings/accessories like loop type insulator, shackle & stay clamps, complete all as specified and directed by Engineer-in-Charge.

Dismantling & taking out of old existing unserviceable insulators of any description and in any position from HT poles all as specified & directed.

Supply and fixing pin type porcelain, vitreous, white, brown or green insulators, including one galvanized mild steel spindle two galvanised iron washers and one galvanised iron nut, 150mm height and 150mm dia suitable for working pressure upto and including 11000 volts grade complete all as specified for HT lines fixed on poles.

Supply and Fixing disc type insulator, porcelain, vitreous 150 mm height and 150 mm dia ball and socket type white/brown or green two in series assembly for tension with tension clamps for conductors working pressure 11000 volts grade complete all as specified for HT lines fixed on poles.

Taking out all connections and repairing/overhauling of air break gang operated switch triple pole, with Drop out fuse unit mechanically operated mounted on insulators and steel frame installed vertically / horizontally , replacement of broken/worn-out components, oiling and greasing of mechanical moving parts, smoothing and polishing of electric contacts with providing conducting jelly on contacts refixed the same after repair complete all as directed ( Note:- Warn out components shall be measured and paid separately)

Supply only following components of air break gang operated switch against items no 20 here in before:-

Female contact or fixed contact heavy duty and high conductive metal assambly brass/Gun metal complete capacity 200 Amp 11 KV

Male contact or Moving contact blade heavy duty and high conductive metal assambly brass/Gun metal complete capacity 200Amp 11 KV

Tinned copper flexible jumper 200A/400A

MS Jumper carrier

Back connector plate

Fixed top contact/L contact assambly brass/Gun metal(DO)

Fixed bottom conatct assambly brass/Gun metal(DO)

Post type insulater 12 KV porecelain 254mm height

11 KV Hand globves rubber ISI Mark

Discharge rod complete with clamp having screw type arrengement for fixing tightly on conductor (ACSR size from raccon to MDOSE with nut bolt & saddle for earth wire. The operating for fixing with clamp shall be made of epoxy resin based tightly insulated fibre glass tube 32mm OD 1.7 Mtr long in places with proper coupling arrengement complete

PVC bird protection disc in red colour 15cm-18cm dia fixed with insulator bottom for protection from birds/any wild animal complete

Dismantling and taking down existing unserviceable lightening arrestor of any capacity and any description and Supply, fixing, commissioning & testing of distribution class lighting arrestor of rating 11 KV capacity and 10 KA NDC(Peak) confirming to to IEC-99.4 including brackets, clamps, bolts, nuts and washers complete all as specified and directed by Engineer-in-Charge.

Supply ,laying, jointing and testing 11 KV (Earthed), aluminum conductor, screened, XLPE insulated, armoured shielded and PVC sheathed cables conforming to IS 7098 (Part-II) amended upto date having cross sectional area 95 Sqmm 3 core including taking down old cable complete all as specified and directed by the Engineer-in-Charge.

Supply , jointing and testing cable jointing kit of 11 KV grade cable for outdoor termination, heat shrink type complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of 95 Sq mm.including taking down old unserviceable one ,complete all as specified and directed by the Engineer-in-Charge.

S/F cable jointing kit for 11 KV(Earthed) grade cable for indoor termination heat shrink type joint complete with jointing materials and accessories suitable for 3 core XLPE armoured at cable of size of 95 sqmm

S/F cable jointing kit for 11 KV(Earthed) grade cable for straight through joint heat shrink type complete with jointing materials and accessories suitable for 3 core XLPE armoured at cable of size of 95sqmm Note : For item No 24, 25 & 26 :- (i) Rate quoted shall be deemed to be inclusive of necessary excavation/ filling making good the existing surfaces with the necessary T&P as required all as directed by the Engineer-in-Charge.

Trimming for branches of trees, bushes, hurbs 10 Mtr surrounding of 4 pole/ 2 pole structure including removal of tree branches etc to a distance not exceeding 50 mtr from over head line all as specified and directed.

Supply and fix Danger notice plate of 1.6 mm thick mild steel sheet vitreous enamelled white with letters figures and conventional skull and bones in signal RED colur and fixed with MS clamps bolts and nuts of approved size for HT 25x20 cm size

Repair of old rusted/worn out wire mesh chain link fencing of any type and description including necessary welding ,clamping nut bolt etc including paiting with aluminium paint over coat of red oxide complete all as specified and directed.

Fixing only chain link fencing including line wires any mesh size and type of rails straining bolts etc.including provision of binding wire

Supply only chain link fencing made out of MS galvanized Minimum 4mm dia GI wire, opening size 2.5"(approx) all specified and directed

S&F mild steel TMT bars 6 mm to 8 mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips.

Excavating Post holes any type soil (or similar holes)each n exc 0.5 cum,getting out, returning filling,and ramming earth or broken rubble mixed with earth around,in layers not exceeding 25cm,watering,and removing surplus soil to a distance n exc 50m and making good surface

S & F mild steel work such as in angle iron flat iron fillets hand rails half round or other steel section or core for wooden hand rail straight portion drilled and countersunk for baluster running bars for doors balusters running bars for doors baluster noising to steps including embedding in concrete an screwing etc,wind ties for roof including securing bolts post and struts in fencing including cutting tops to shape as directed drilling holes notching for wire including all necessary works.

S & F screw bolt (machine made) with hexagonal or square heads at one end and screwed the other or screwed both ends each scerwed end to be fitted with washers and one hexagonal or square nut exc 10cm and n exc 15cm long.

Supply and fix Tinned copper fuse wire of 16SWG to 22 SWG or 30 Amps to 200 Amps capacity suitable for 11kV supply all as specified and directed by Eng-in-Charge.

Material and labour for cleaning and preparation of existing 4 pole structure steel / cement surfaces of steel tubuler / PCC pole 11 mtr long including channels miled steel cross arms ,clamps etc complete and applying two coats of aluminium paint all around the exposed steel surfaces of existing steel tubuler poles of any description and two coat of cement wash weather proof exterior paint on PCC pole in any position above the height of 1.50 mtr from the plinth of the pole including white cement wash weather proof exterior paint on coping of the pole and applying one coat of synyhetic enamelled paint of different colours in strips of 150 mm width up to the height 1.5 mtr from the plinth of pole including writting pole No and other sign works with white paint over black painted base in the patteren and style as approved by the Engineer in charge complete all as specifeied and directed . Note : Size of black painted base for numbering shall be 100 mm x 25 mm and the size of numbers shall be not erxceeding 10 cm height.

All as per serial item no 38 here in before but 2 pole structure .

Supply and laying synthetic rubber insulated mat 2.5 mm thick for voltage upto 11 KV for electrical purpose as per IS 15652-2006 (superseding IS 5424) suitable for electrical shock safety of size 2 mtr x I mtr complete all as specified and as directed.

Filteration/dehydration of transformer oil through filtration plant to improve the dielectric strength/insulation value of the transformer oil upto 60 KV (RMS) at 4mm gap complete all as specified and directed for various capacity of transformers/OCB’s installed at various locations

Supply, and filling/replacement/topping up of transformer insulating oil EHV grade having dielectric strength not less than 60 KV (R.M.S) at 4mm gap high viscosity in transformer confirming to IS – 335 of 1983 all as specified and directed for various capacity of transformers installed at various locations

Supply and filling silica gel in breathers of various capacity of transformers including taking out old unserviceable silica gel complete all as specified and directed.

Dismantling of old unserviceable breather assembly of any description/capacity and supply & fixing new breather assembly transparent body suitable for 11/0.433 KV transformers of capacity upto 100 KVA to 500 KVA complete all as specified and directed by Engineer-in-charge.

Replacement of existing unserviceable temperature gauge old type with new temperature gauge of existing specification/Model for transformers of capacity upto 400 KVA complete all as specified and directed.

Supply and fixing in replacement and testing externally operated tap changer switch “OFF LOAD TYPE” on HV winding to vary the LV Voltage up to + 7.5% variation limit in steps of 2.5% complete suitable for upto 500 KVA transformers complete all as specified and directed by Engineer-in-Charge.

Supply and fixing rubberized cork sheet gasket of 6 mm thickness cut to size/shape for top cover of transformer upto 400 KVA capacity complete all as specified and directed by Engineer-in-Charge.

Supply and fixing with replacement of LT side porcelain bushing for 100 to 400 KVA capacity transformer complete all as specified and directed by Engineer-in-Charge.

Supply and fixing with replacement of HT (11KV) side porcelain bushing for 100 to 400 KVA capacity transformer complete all as specified and directed by Engineer-in-Charge.

.Supply and fixing with replacement of LT side copper set stem with nut bolts and washers complete for 100 to 400 KVA capacity transformer complete all as specified and directed by Engineer-in-Charge.

.Supply and fixing with replacement of HT side brass set stem with nut bolts and washers complete for 100 to 400 KVA capacity transformer complete all as specified and directed by Engineer-in-Charge.

Supply only enamelled copper winding wire/strips of superior quality and approved make of suitable gauge and number of turns for rewinding HT/LT damaged coils of transformers of different make, type and capacity alongwith allied materials such as cork sheet, fibre glass insulation / paper insulation / cotton, ampire tape and wooden blocks, bolts, nuts and washers (Brass) soldering and other packing materials etc., all as specified and directed by Engr-in-Charge.

Transportation of transformer carefully, any capacity, including lifting, loading and unloading, from site of work/ power house to workshop and back after completion of work in workshop, Dismantling and taking out the transformer step down 11KV / 433 Volts capacity ranging from 50 KVA to 315 KVA, pole mounted/platform mounted at darjipura area, disconnecting all electric connections(HT and LT side) including Earthing, taking down carefully and removing the top cover for inspection and then draining of complete transformer oil and taking out the core alongwith HT/LT coils, rewinding, heating, varnishing, testing and housing accessories in transformer body and connecting up, refilling the dehydrated/ filtered transformer oil / top up new transformer oil, reassemble all accesories and refix the top cover nut bolt washer with providing new rubber gasket and installing, recommissioning, the transformer at its original place, connecting up HT & LT sides, earthing and supporting angles/cross arms etc and testing & preparing report as per the format attached as appendix and maintaining proper record all as directed by Engr-In-Charge.Note: Spares(other than mentioned above) used will measured saparately.connecting with existing electrical system HT/LT and commissioning complete on load all as specified and directed by Engr-in-Charge. Notes for item No 53 :-(i). Winding wires /strips of copper or aluminium, shall be measured and paid separately. (ii). Spares like Breather assembly, Temp Gauge, LT Bushing, HT Bushing, Top up of new Transformer oil shall be measured and paid seperately under respective items. (iii) Dehydration and filteration of existing oil shall be measured and paid separately. (iv). Transportation of transformerto the location as directed by Eng-in-Charge ( to & fro) is deemed to be included. (v). Labour component for fixing of supply only items is deemed to be included in the rate quoted.(vi) Once the transformer is taken for repirs, the complete gasket and other jobs mentioned above to be completed irrespective of area/portion of fault. The contractor shall remain responsible for proper functioning of transformer and any kind of leakage after repair for one year and will reattend the repair without any extra cost. Only registered/authoriesd transformer reparing team will be permitted to carry out repair work in any case.

M & L for cleaning & preparation of transformer surfaces of any description, and capacity 100 KVA to 400 KVA, in any position and painting of transformers out side with applying two coats of synthetic enamel grey paint after removing all dust/rust and paint must confirm to IS 2032 (latest) including writing the SM No/MES No on transformers with white paint in the existing style/pattern complete all as specified & directed by Engineer-in-Charge.

M&L Taking out HT/LT UG cable of any size in any position including excavation earth work complete and relaying/rerouting the same cable laid in underground/trench/cable duct/tunnel/ surface all as specified and as per directed Engr-in-Charge. Note:- Earth work shall be measured & paid separately under relevant items to re route and relaying UG cable

Supply and lay GI tubing 80 mm dia, light grade for cable protection at road crossing / on poles and tubing sealed at both ends after laying the cables complete all as specified

Supply and lay GI tubing 100 mm dia, light grade for cable protection at road crossing / on poles and tubing sealed at both ends after laying the cables complete all as specified

M&l servicing and maintenance of HT VCB 11000 Volt 400 Amp of any make and type at existing site including opening /drawing out the VCB trolly after switching off electric supply testing and maintenance of VCB panel complete with following:- (i) Checking of all mechanical/electrical control systems for proper functioning including spring charging system, tripping system, indication system, vaccum interrupter; cleaning & servicing the fixed/moving contacts & blowing out dust and applying the proper lubrication/greasing complete, (ii) checking of Contact Resistance (RYB) and Auxiliary Supply voltage of closing coil, tripping coil, Motor; cleaning & servicing for proper functioning (iii) Timing Test of closing time and opening time, IR value with 5 KV megger before and after HV, (iv) Checking of PT & CT which shall include ratio test and healthiness of the HT and LT fuses and associate circuiting. (v) Breaker testing which inclueds (a)Insulation resistance, (b)Pick up and drop of operating coils, (c) To check IR Values(CT) (d) To carryout polarity test(CT), (e) to check Knee point voltage/ measurement in case of class PS CT (vi) Servicing of HT, 11 KV, VCB, 400 Amps capacity, 50 Hz, breaking capacity 50 KA by drawing out from moving contacts for smooth funcitoning including replacement of tripping and closing coils, 30 volts, DC and servicing of solenoid switch, all as directed, (vii)Dismantling of unserviceable bus bar bushing from existing 11 KV bus bar chamber and supply and fix bushing suitable to match existing bushing complete, (viii) Removing the burnt out fixed contact assembly from the HT, VCB, 11 KV, 400 Amps of Areva Make supply and fix contact assembly of copper strip all as specified and directed, (ix) To carryout HV (AC ) Test in open & close condition with suitable HV Kit for both 11 KV VCBs. (x) To check contact resistance (by millivolt drop test or with micro Ohm meter). Note: Servicing of VCB to be done only by authorised dealer/ servicing partner of Schnider / Areva/Alstom /L&T and CG ( as approved by GE) and proper voucher to be submitted which will be responsibility of the contractor.Strictly No any other unauthorised servicing team/people will be allowed to carryout the servicing/repairwork in any case.

Supply and fix in repair following spare parts for 11 KV VCB,400 Amps capacity of Make: Crompton Greaves, conforming to the respective cat part given as under :-Note :(i) Fixing & testing element of following item is deemed to be included under Sch `A’ item No 58 above. (ii) Quantity of under mentioned items is tentative and contractor shall have no claim on account of variation of quantity or non execution of any of the item.

Vacuum interrupter suitable for 11 KV VCB Make CG

Fixed contact block 400 amps.

Auxiliary switch (6 NO + 6 NC ).

Closing coil 30 V DC

Tripping coil 30 V dc

Heating element with thermo stat switch

Buffer closing Spring

Buffer opening Spring

Support Insulater 11 Kv

Moving contact

Tulip contact

Finger contact

Spring charging motor 230V

Breaker Housing assembly 11 KV

Taking out existing unserviceable mechanical type IDMT Relay from existing VCBs and Supply and fixing of Microprocessor based numerical relay Over current and earth fault complete Make L&T MC61 ANX2200 with 2NO+2NC including Retrofiting Charges with balnking plate and necessary wiring, including calibration testing (primary and secondary injection) and commisiong all as directed by Engr-in-Charge

M&L for Calibration of IDMTL relays through primary and secodary injection method and testing complete, re-setting where required and ensuring proper functioning of earth fault and overcurrent relays all as directed. (Spares required to be replaced shall be measured and paid for separately under relevant items here in after).Main incoming MRS,

S&F Tripping and closing coil shaft with springs & Trip strips of standard manufacturers suitable for existing relay, fixed as in repairs ( of make used by original manufacturer of VCB).

S&F Rack in rack out gear assy of standard manufacturers suitable for existing VCB , fixed as in repairs ( of make used by original manufacturer of VCB).

S&F VCB spout of standard manufacturers suitable for existing VCB , fixed as in repairs ( of make used by original manufacturer of VCB).

S&F Vaccum Circuit breaker Mechanisam for 11 kv VCB of standard manufacturers suitable for existing VCB , fixed as in repairs ( of make used by original manufacturer of VCB).

S&F Power Pack 110 V AC three phase and out put 30 volt DC as per sample, of standard manufacturers suitable for existing relay, and as per sample kept in the office of GE, fixed as in repairs.

S&F wound type 11 KV RESIN CAST CT CTR : 100-50/5-5A Core1 : CL 1, 15 VA, at 50/5 A CL 1, 15 VA, at 100/5 A,Core2 : CL 5P10, 15 VA, at 50/5 A CL 5P10, 15 VA, at 100/5 A,STR : 13.1KA/1 SEC, Frequency: 50 Hz BIL : 12/ 28/ 75 KV, Insulation Class: B,Ref Std.: IS 2705, Secondary Terminals on P1/P2 Side complete, fixed as in repairs after removing old existing CT, all as specified and directed by Engr-in-Charge and as per sample kept in the office of GE .

M &L for anti track sprey for VCB, minimum 4 coat at the interval of 15 min, High gloss, high dielectric strength , Electric Strength upto 50kV/1mm layer of paint, Thermal Stability upto 200 Deg. Celcius, Tracking Index < 400, Permittivity at 50 Hz - 56.5., flexible tough epoxy anti- track coating with excellent resistance to abrasion, wear, oil, water acids & alkalis, Restores “IR” values & prevents breakdowns, di-electric coating designed to prevent tracking, arcing and flash overs caused by dust and moisture specifically on bus bar end-bushings, inside busbar chamber surface and insulators. Weather proof & non-ageing Applications: Ultra high hydrophobicity & UV, weathering durability.

M & L for cleaning of grass and bushes around two pole structure and four pole structure, RMU/VCB/Panel area, complete including cutting unwanted ingress upto 6/10mtrX6/10mtr area or area inside chain link fencing complete all as specified and directed by Engineer-In-Charge. Note: (i) The contractor shall bring all the tools and man power for proper cleaning of the area shown by concerned AGE/JE(E/M). (ii) Cleaning job schedule after every two month/ as directed by Engr in charge of each installation. cleaning of each installation after each two month shall be measured each job.

Supply and laying 40mm graded stone aggregate on surface with 10 cm depth in side pole mounted sub station copmlete all as specified and directed by engineer in charge.

M & L for hiring of Fault Locator Machine Vehicle, complete, from the authorised supplier alongwith their dedicated specialised team; finding out the exact HT fault location from both end terminations of underground cable; submission of report of fault for verification and records of Engineer in charge; including M&L for necessary excavation and earthwork, returning filling in, removal of surplus spoil, sand cushioning, cable covers complete all as direcred.

M&L for disconnectiong 11 KV HT cable from the connection and checking IR value of the HT cable with thumber machine and submitte the report sheet including connecting the HT cable to the connection after rectification of fault complete all as directed. Note:- (a)Cable End/Straight joint will be measured separately (b) Joint will be replaced if IR value of cable found less than 100mΩ (c) Proper shutdown will be provided as per direction of Engr-in-Charge.

M&l servicing and maintenance of HT RMU 11000 Volt 630 Amp 3way/4way/6way of any make and type at existing site including opening the RMU after switching off electric supply testing and maintenance of RMU panel complete with following:- (i) Checking of all mechanical/electrical control systems for proper functioning including spring charging system, tripping system, indication system, vaccum interrupter; cleaning & servicing the fixed/moving contacts & blowing out dust and applying the proper lubrication/greasing complete, (ii) checking of Contact Resistance (RYB) and Auxiliary Supply voltage of closing coil, tripping coil, Motor; cleaning & servicing for proper functioning (iii) Timing Test of closing time and opening time, IR value with 5 KV megger before and after HV, (iv) Checking of PT & CT which shall include ratio test and healthiness of the HT and LT fuses and associate circuiting. (v) Breaker testing which inclueds (a)Insulation resistance, (b)Pick up and drop of operating coils, (c) To check IR Values(CT) (d) To carryout polarity test(CT), (e) to check Knee point voltage/ measurement in case of class PS CT (vi) Checking of presuure of SF6 chamber if found low pressure then topup SF6 gas. (vii) Calibration of overcurrent and earth fault relay. (viii) Replacement of relay power backup batteries (ix) To carryout HV (AC ) Test in open & close condition with suitable HV Kit for both 11 KV VCBs. (x) To check contact resistance (by millivolt drop test or with micro Ohm meter). Note: (i) Servicing of RMU to be done only by authorised dealer/ servicing partner of Schnider/Areva/Alstom /L&T and CG ( as approved by GE) and proper voucher to be submitted which will be responsibility of the contractor.Strictly No any other unauthorised servicing team/people will be allowed to carry out servicing in any case. (ii) SF6 Gas will be measured and paid seperatly

Supply only SF6 insulated gas for RMU

AAAC conductor (All Aluminium Alloy stranded conductor ) 7/4.26mm (dog) size 99.8 sqmm overall dia 12.78mm for fix in place of existing jumper at two pole/4pole structure complete

M&L for earthing complete with galvanized steel earth plate 600x600x6 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 normal ground level connected to galvanized iron earth strip 32x6 mm as earthing lead by means of bolt ,nuts, check nuts and washer of galvanized iron or steel besides welding of all joints as shown in drawing and including excavation and earthwork, G.I.pipe light grade 40mm bore for protection of G.I.strip from earth electrode to incl the earth test point supplying and laying charcoal dust, common salt PCC 1:2:4 type CI chamber and MS angle iron frame 40x40x3mm RCC cover 40 mm thick (1:2:4) type BI using 20 mm graded stone aggregate reinforced with 6 mm dia round bars @ 75 mm c/c both ways with MS handle 12 mm dia CI funnel and wire mesh, 20 mm dia GI pipe light graded for watering all as shown in drawing and connected to earth test point incl testing complete all as specified and directed .

Taking out existing platform and providing platform for transformer of size 3.0x3.0x1.5m high from GL including excavation in trenches not less than 1 mtr, PCC 1:5:10 type E2 for foundation, brick work in cm 1:6, PCC 1:2:4 type B1 in copping, plaster 10mm thick in cm 1:6 om brick /complete surface PCC 1:4:8 type B1 sub base 75mm thick, as in floor PCC 1:2:4 type B1 100mm thick floor using extra cement returning filling and removal of surplus soil, including 2 Nos ISMB 100mm channel painting with 2 coat aluminium paint over a coat of red oxide primer and 3 coats of white washing on cement work for fixing transformer including ramp of suitable size mounting of transformer complete all as specified and as directed by Eng-in-Charge/GE.

M&L for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required 25x4mm galvanised iron strip

ARTI CONSTRUCTION (BID ID -3448168)

Gayatri Associates (BID ID -3454116)