REPAIR ROUTINE MAINT OF 11 KV SUBSTATION INCL TRANSFORMERS SERVO STABILIZERS CONTROL PANELS VCB CT_PT GOD DO FUSES CONTROL CABLES ETC AT HANSA VIHAR AND GLIDE PATH UNDER AGE EM I VASCO

M & L for filteration and dehydration of transformer oil by dehydration machine to achieve the die-electric strength/ insulation value of minimum 60 KV at standard gap of electrodes 2.5 mm for one minute in various capacity of transformers 33/11KV and 11/0.433KV including insulation testing of oil with help of suitable equipments before and after dehydration including BDV Test complete all as specified and directed by Engr-in-Charge. Note: (i) Contractor will have to arrange the dehydration machine and transformer oil dielectric strength testing equipment as mentioned and same shall be deemed to be included in the item rate quoted. (ii) Test result of transformer oil before and after dehydration is required to be submitted by the contractor duly signed by all concerned. (iii) The contractor shall ensure that the conservator tanks are full to its level before commencement of dehydration process. (iv) Additional quantity of transformer oil if any required for making the oil level upto the requirement in transformer shall be measured and paid separately as supply and filling but its cost of heating shall be deemed to be included in the rate quoted under this item.

Supply and fill new EHV grade insulating transformer oil complete with minimum BDV not less than 60 KV complete all as specified and as directed by Engr-in-Charge

Excavation in trenches n.exc 1.5M wide & n.exc 1.5m in depth for laying & removing of cable any sizes and getting out in hard/dense soil complete all as specified and as directed by Engr-in-Charge

Returning filling in excavated earth work including spreading, levelling, watering and well ramming in layers n.exc 25cm thick in any strata complete all as specified and as directed by Engr-in-Charge

Removing excavated soil to a distance n.exc 50m, depositing where directed at a level n.exc 1.5M above the starting point complete all as specified and as directed by Engr-in-Charge

Supply and filling in and speading clear sand for cushioning and covering the under ground cables in trenches and punning to provide required cover complete all as specified in SSR Part-I and as directed by Engr-in-Charge. Note: Punned thickess i.e 18 cm shall be measured & paid.

Supply and lay un-reinforced precast concrete cable covers, class HV , type- I with peak, size 300mm x 180mm x 40mm, all as specified and as directed by Engr-in-Charge.

Supply & lay in trench/on wall in repairs GI tubing light grade 100 mm dia for road crossing and cable protection complete all as specified and as directed by Engr-in-Charge.

M & L for PCC 1:4:8 type D-2 using 40 mm graded stone aggregate including use and waste of form work of concrete for pole and stay foundation complete all as specified and as directed by Engr-in-Charge.

M & L for PCC 1:3:6 type C-1 using 20 mm graded stone aggregate including use and waste of form work for pole coping complete all as specified and as directed by Engr-in-Charge.

M & L for graded coarse aggregate (broken stone or boulders) of size 40 mm in substation yard for laying all as specified and directed by Engr-in-Charge. .

Supply & Lay , testing and commissioning XLPE cable , PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 120 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing in different locations / areas complete all as specified and as directed by Engineer -in-Charge

Supply & Lay , testing and commissioning XLPE cable , PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 95 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing in different locations / areas complete all as specified and as directed by Engineer -in-Charge.

Taking out old serviceable ACB of capacity 400 to 1200 amps 415 volts AC 50 HZ at various sub station and carry out necessary servicing , greasing to fixed and movable parts , cleaning complete internally and testing after reinstallation complete all as specified and as dircted by Engr-in-Charge (Note:- Any demage occures during servicing will be borne by the contractor ).

Supply and fix charging motor 110V AC/DC, 220V AC/DC of suitable size for ACB of capacity 400 to 1200 Amps complete all as specified and as directed by Engr-in-Charge.

M & L for Earthing complete with copper earth plate electrode 600 x 600 x 3.15 mm thick burried directly in ground earth pit not less than 2.25 mtr deep below normal ground level with top edge of the plate not less than 1.5 mtr below normal ground level connected to copper strip size 20 x 3 mm thick by means of nuts/bolts, check nuts and washers of brass as shown in electrical plate No. 5 of SSR part-I including necessary excavation and earth work, GI Pipe 15 mm bore light grade for watering with funnel, wire mesh and protection to earthing strip shall be provided with GI pipe light grade 32 mm dia up to 7.5 mtr from the earth plate electrode and refilling of soil including adequate quantity of charcoal dust and common salt mixed with 10% garden soil and 10 Kg bentonite powder, PCC pit chamber in PCC 1:3:6 type C-1 with 40 mm thick Precast RCC cover slab 1:2:4 type B with 8 mm dia TMT bar and handle with lifting hooks including testing any type complete including removing old earthing and all as specified and as directed by Engr-in-Charge

M & L for Earthing complete with GI earth plate, electrode,600x600x6.0 mm thick burried directly in ground (earth pit not less than 2.25m deep below normal ground level) filled with common salt and charcoal and connected to GI earth strip 32x 6 mm thick dia by means of GI nuts, bolts, & washers as shown in electrical plate No. 5 of SSR Part-I and Connected to earthing test point all as specified and including necessary PCC earth pit chamber of 1:3:6 and chamber cover of 50mm thick PCC 1:2:4 with 6mm dia mild steel reinforcement of 10 cm c/c spacing both ways in lieu of CI cover, watering arrangement shall be made with GI pipe light grade of 20mm dia including funnel and protection to earth lead shall be provided with GI pipe light grade 40 mm dia unto 7.5 from the earth plate electrode & refilling of soil etc including necessary excavation & earth work in any strata and PCC chamber all as specified and directed by Engr-in-Charge including demolish existing earth pit taking out old materials.

Repairing / Servicing the air break isolating switch 11 KV 200 Amps by replacing the defective major spares including provn of worn out bolts nuts etc, applying petroleum jelly on moving/ fixed contacts all as specified and as directed by Engr-in-Charge. Note :- Major spare shall be measured & paid separately under relevant items of item No. 20

Supply only Air break switch spares

(a) Male contact/moving Contact Blade

(b) Female contact/Fix Contact Jaw

(c) Tinned copper Flexible jumper 200A

(d) MS jumper carrier

(e) Back Connector plate

(f) Petroleum Jelly

S & F in trench/on wall in repairs GI tubing light grade of size 80 mm dia for road crossing and cable protection of the as in repairs complete all as specified and as directed by Engr-in-Charge

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable straight through joint heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured AI conductor cable of size 95 sqmm complete all as specified and directed by Engr-in-Charge

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable straight through joint heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured AI conductor cable of size 120 sqmm complete all as specified and as directed by Engr-in-Charge

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured AI conductor cable of size 120 sqmm to 185 sqmm complete all as specified and as directed by Engr-in-Charge

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured AI conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed by Engr-in-Charge.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 .sqmm to 185 sqmm complete all as specified and as directed by Engr-in-Charge.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable indoor termination heat 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 by Engr-in-Charge.

Supplying and laying synthetic Rubber insulated mats 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 sizes 2m x 1m, complete all as specified and as directed by Engr-in-Charge.

Cutting and trimming tree branches n.exc 50 mm dia in size obstructing lumination of street light and touching line complete all as specified and as directed by Engr-in-Charge.

Cleaning around any E/M installations/ pole structures including removing all grass and other vegetations with roots complete all as directed and removing the rubbish to a distance not exceeding 50 mtr and depositing where directed by Engr-in-Charge.

M & L for cleaning and preparation of steel surfaces of existing dull painting of transformer outdoor type including radiators, cooling ducts, vent pipes, condensor etc and applying two coats of synthetic enamelled paint (heat resistant type) according to to IS colour code by spray machine including writing MES /SM No. in capital letters of suitable size on body for capacity upto 250KVA transformer outdoor/indoor complete all as specified and as directed

All as per item No: 31 but capacity above 315 KVA and upto1000 KVA.

M & L Superior quality blue colour silica jel for breather unit and fill up the oil, to maintain the exact value grade for transformer of capacity upto 500 KVA, including taking down unserviceable complete as specified and as directed by Engr in Charge.

Supply and fix in repairs breather unit of transparent PVC Material including its replacement for transformer of capacity upto 500 KVA complete as specified and as directed by Engr in Charge.

S&F in repairs HV bushing with insulator, studs nut & washers suitable for 11 KV/433V HV side of transformer 100 KVA to 150 KVA complete all as specified and as directed.

S&F in repairs HV bushing with insulator, studs nut & washers suitable for 11 KV/433V HV side of transformer 200 KVA to 250 KVA complete all as specified and as directed.

S&F in repairs HV bushing with insulator, studs nut & washers suitable for 11 KV/433V HV side of transformer 315 KVA to 400 KVA complete all as specified and as directed.

S&F in repairs LV bushing with insulator , studs nut & washers suitable for11 KV/433V LV side of transformer of Capacity 100KVA to 150 KVA complete all as specified and as directed by Engr-in-Charge

S&F in repairs LV bushing with insulator , studs nut & washers suitable for11 KV/433V LV side of transformer of Capacity 200KVA to 250 KVA complete all as specified and as directed by Engr-in-Charge

S&F in repairs LV bushing with insulator , studs nut & washers suitable for11 KV/433V LV side of transformer of Capacity 315KVA to 400 KVA complete all as specified and as directed by Engr-in-Charge

Servicing and repairing/ carrying out maintenance of 11KV/433V transformer upto 250 KVA capacity including the following works complete all as specified and as directed. (a) Removing from platform and disconnecting electrical connection from HT and LT side including transporting the transformer to work shop. (b) Dismantling the transformer, drain out transformer oil, lift the cover,coil assembly keep up the assembly in oven upto the preparation of inside chambers by cleaning inside, scraping complete all around old parts of the transformer. (c) M & L for two coats of oil resistance painting internal (inside transformer) over a coat of red oxide primer. (d) Cleaning the core iron sheet laminations asssembly by oil complete,removing the carbon sediments, dust in the coil and core gently without making any damage to coil and core. (e) Re-assembling all dismantled parts including provision of new gasket ,nut,bolts,refilling with transformer oil and transporting back to original location including elecric conection testing and commissioning complete. (f) Necessary plate work incuding welding for preventing oil leakage if any. Note :- i) Oil filtration,supply of new oil will be measured separately. (ii) All petty parts including nut, bolts, gasket minor weldings are deemed to be included the rate quoted

Servicing and repairing/ carrying out maintenance of 11KV/433V transformer of 315 to 500 KVA capacity including the following works for complete all as specified and as directed. (a) Removing from platform and disconnecting electrical connection from HT and LT side including transporting the transformer to work shop. (b) Dismantling the transformer, drain out transformer oil, lift the cover,coil assembly keep up the assembly in oven upto the preparation of inside chambers by cleaning inside, scraping complete all around old parts of the transformer. (c) M & L for two coats of oil resistance painting internal (inside transformer) over a coat of red oxide primer. (d) Cleaning the core iron sheet laminations asssembly by oil complete,removing the carbon sediments, dust in the coil and core gently without making any damage to coil and core. (e) Re-assembling all dismantled parts including provision of new gasket ,nut,bolts,refilling with transformer oil and transporting back to original location including elecric conection testing and commissioning complete. (f) Necessary plate work incuding welding for preventing oil leakage if any. Note :- i) Oil filtration,supply of new oil will be measured separately. (ii) All petty parts including nut, bolts, gasket minor weldings are deemed to be included the rate quoted

M & L for rewinding of transformer,including dismantling,drain out transformer oil and removing the core coil assembly from transformer remove the weak /unserviceable HT coil assembly rewinding with correct gauge super enamelled copper wire including drying,baking etc complete and remove the secondary coil assembly remove the insulation rewind with fresh coil and re-insulated. Assembling the primary and secondary coil in core, re-assembling the transformer complete refill with transformer oil, install, test and commissioning complete of following capacity all as specified and as directed by Engr-in-Charge:-

(a) Transformer upto 250 KVA Capacity

(b) Transformer 315 KVA to 500 KVA Capacity

All as per item No. 43 here in before, but for 430 V LT side limbs for following capacities :-

(a) Transformer upto 250 KVA Capacity

(b) Transformer 315 KVA to 500 KVA Capacity

Notes for Item Sl Nos. 43 & 44 : (i) Additional oil required for top up of transformer after filteration shall be measured and paid for separately. (ii) Rewinding of limb shall be carried out only after the inspection of Transformer by the Departmental authority at Authorized maintenance work shop. (iii) Cost for transportation and lifting of Transformer shall be measured and paid separately.

M & L for Transportation and lifting of Transformer 11KV/433V of capacity upto 500 KVA including loading and unloading by suitable capacity crane to workshop for repair as per SI Item Nos 43&44 above in a load carrier vehicle from Electrical installations at INS Hansa area to workshop and returning back to site at its existing installation place all as specified and as directed.

M & L for Transportation and lifting of Transformer 11KV/433V of capacity above 500 KVA and upto 1000 KVA including loading and unloading by suitable capacity crane to workshop for repair as per SI Item Nos 43&44 above in a load carrier vehicle from Electrical installations at INS Hansa area to workshop and returning back to site at its existing installation place all as specified and as directed.

S & F DO fuse elements Rating 11 KV capacity 05 Amps complete all as specified and as directed.

S & F DO fuse elements Rating 11 KV capacity 10 Amps complete all as specified and as directed.

S & F DO fuse elements Rating 11 KV capacity 20 Amps complete all as specified and as directed.

M & L for preparation of old cement coated surface, cleaning the surface of the RCC Pole (HT) above the ground level including coping area with 2 coats of exterior emulsion paint over a coat of cement primer after preparation of surface and all as specified and as directed by Engr-in-Charge

M & L for Painting of 2 pole structure including preparation of old cement coated surface,angles,cross arms & painting of RCC poles with two coats of exterier emulsion paint over a coat of Cement primer and painting of angle, cross arms,and connecting accesories with one coat of red oxide primer and two coats of aluminium paints all as specified and as directed.

M&L for polymer Post / disc / pin insulator of 11 KV capacity carefully and re-fixing the same in the new cross arms / structure incl replacement of new hardware such as GI spindle, nut, bolt and washers complete all as directed by Engr-in-Charge

Supply and fix in replacement of aluminium conductor, steel reinforced (ACSR) of following sizes as in overhead conductor including fixing aluminium tapes for binding including dismantling of old conductor of any size and capacity complete all as specified and directed: - (a) 6/1 x 2.59 - Weasel (b) 6/1 x 2.11 - Squirrel Note: The weight of the conductor shall be determined as stipulated in Preamble (b) on Page 406 of SSR-2010 Part-II (Rates).

Supply, install, testing and commissioning of HT Feeder pillar Box outdoor type 11KV 50 HZ 3 Phase of suitable size not less than (1500x1500x1200 mm) duly powder coated with copper bus bar of 60x5 mm incl suitable insulators. It comprises following accessories such as totally enclosed self supporting structure / cubicle, fully compartmentalized type, weather proof, suitable for outdoor type, bottom cable entry with suitable cable glands ,CRCA steel sheet of thickness 3.15 mm with suitable angle iron frame work and legs of ISA 50x50x5 mm, with four legs grouted to PCC (1:2:4) type B1, foundation block with suitable mounting arrangement for bus bars with sloping canopy at top, double hinged doors at front with suitable locking arrangement,sheet will be treated under 8 - tank metal treatment process, complete all as specified and directed.

S&F in repairs for epoxy insulator suitable for 11 KV reel type inside HT feeder pillar box outdoor type including replacement of new nut, bolt and washer on bus bar and base complete all as specified and directed.

Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures andconventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm size

Supply and fixing cable route indicator made out of PCC 1:2:4 of size 20cmx20cmx90cm dully painted with red colour by two coat of enamel paint and writing MES No details of HT cable with white paint on all sides complete all as directed.

S & F in repairs lightning arrester expulsion type complete with all fittings transmission class,discharge capacity 65 kilo amps,suitable for 11 KV all as directed

Supply only rubber hand gloves of 11 KV grade ISI marked.

Supply only fiber glass discharge rod in three sections and aluminium head with complete accessories suitable for 11 KV of 20 feet height complete all as specified and as directed

S&F MS Galvanised Chain link fencing including line wires any mesh, size and type to any type standard , rails, straining blots etc. including provision of binding wire.

Material and labour in Providing reinforced cement concrete type B-l, 1:2:4 (20 mm graded aggregate) in precast posts, fencing posts, straining or terminal posts, struts etc. for fencing, average sectional area n exc 100 sq. cm, with or without chamfered angles and flat, splayed, rounded or mitred tops as directed and fixed

S & F in repairs Galvanaised Iron cross arms channel, bracing, support, clamps etc fabricated structured steel, sections, including nuts, bolts, washers etc and cutting to required length beat to any shape drilling holes, fixed on poles or jointed by means of elect welding complete incl painting with 2 coats of aluminum paint over a coat of red oxide primer after preparation of surfaces incl taking down / dismantling the old items complete all as directed.

Carry out materials /mechinaries, labour for fault finding of 11 KV HT under ground cable using advanced and calibrated diagnostic equipment for the of length 1.5 KM in case of cable fault such as short circuit/burn out/ earth fault etc, the contractor shall deploy trained technician with all tools and safety equipments complete all as specified and directed. Job is inclusive of verfication of cable route, checking of cable insulation using Megger/Insulation tester. (Note : Straight through joint will be measured and paid separately)

M & L for testing of faulty transformer by conducting required tests and submit report to the dept, following tests to be carried out by contractor through experts :- checking of all connections, verify the high voltage and low voltage cables are correctly terminated and all connections are in accordance, Insulation testing, Tap changer operation, incoming and outgoing voltage, silica gel in breather, oil level in conservator, check oil leakage and submit the report of the faulty transformer all as specified and as directed.

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