81204/E8 CERTAIN REPAIR / MAINT OF HT UG CABLES/ STRUCTURES/ HT RING MAIN FEEDERS, IMPROVEMENT TO SUB-STN YARD, REPAIR/ MAINT/ RE-INSULATION /DEHYDRATION OF STEP UP/ STEP DOWN/ DISTRIBUTION TRANSFORMERS, CSS, REPAIR/ MAINT OF VCBs, RMUs, PRIMARY PROT

Dismantling and taking down existing serviceable/ unserviceable / deshaped / worn out HT steel tubular / PCC pole of any shape, size & height including demolition of existing PCC foundation etc. complete all as specified and directed. Note :- Steel tubular/ PCC pole obtained under this will be consider for credit schedule.

Supplying, transporting, erection & fixing of new steel tubular swaged poles type 410 SP-55, (11.00 metres long), with cast iron base plate 6mm thick, finial taper plug, bolts, nuts and screws complete as specified with and including two coats of aluminium paint over a coat of red oxide primer on all exposed surfaces and tarring with black bituminous paints to portion embeded in PCC with and including painting with synthetic enamel paint of colours black and yellow alternate strips of 30cm width upto 1.5 mtr from the top of coping complete including making suitable holes where required all as specified and directed. Note : PCC in foundation, coping, Earth work (Excavation, Returning & refilling and removal) will be measured and paid separately under relative items of Sch 'A'/BOQ.

M&L for PCC (1:4:8) type D-2, using 40 mm graded stone aggregate, as in foundation of poles or in any indicated positions etc complete all as specified and as directed.

M&L for PCC (1:2:4) type B-1, using 20 mm graded stone aggregate, as in coping of poles etc with necessary form work complete all as specified and as directed.

Dismantling and taking down existing serviceable/ unserviceable / deshaped / worn out MS cross arms including insulator etc. complete all as specified and directed. Note :- Insulator obtained under this will be consider for credit schedule.

Supplying, fabricating, fixing in position cross arms, bracings, supports, clamps and back plates, fabricated from in structural steel section any type /size /shape incl nuts bolts washers, welding, bending hot or cold, drilling holes for bolts, in any shape or size as required at site, including painting with two coats aluminium paint over a coat of red oxide complete all as specified and directed.

Dismantling old broken /worn out/rusted ACSR/ copper conductor/ GI wire/ cradles etc carefully of any size, from existing HT structures/ over head electric lines incl disconnection supply complete all as specified and as directed.

S&F of aluminium conductor steel reinforced (ACSR) of any size/description on HT structures including stringing, tightening, binding to insulators with aluminium wire making and connecting jumpers, connections etc including testing complete all as specified & directed.

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

S&F disc type porcelain, vitreous, white, brown or green insulators, 145mm height and 255mm dia, two-in-series assembly for tension with tension clamps for conductors, working pressure 11000 volts grade complete all as specified and as directed.

S&F Pin type, composite silicon rubber polymeric type insulator 165 mm height, 100mm dia for 11000 volts grade, 5 kN with ECR glass rod, forged steel top and bottom, silicon rubber housing and weather sheds, including one galvanized mild steel spindle, galvanized iron washer, spring and one galvanized iron nut all as specified and as directed.

S&F disc type insulator, composite silicon rubber polymeric type 200 mm height, 100mm dia for 11000 volts grade, 45 kN with ECR glass rod, forged steel tongue and cleaves, silicon rubber housing and weather sheds complete all as specified and as directed.

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

S&F in repair anti climbing devices, spike type, fabricated out of MS bar (round, square or flat) including nuts bolts washers and welding in two halves made of shape to suit the cross section of pole complete as specified and as directed.

S&F in repair Danger Notice Plate of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters in English and regional language, figures and conventional skull and bones in signal red colour and fixed with 2 Nos MS clamp, bolts and nuts of approved size for HT, 25 x 20 cm size complete all as specified and as directed.

Dismantling air break gang operated switches triple pole vertical/ horizontal mounted including isulators and opretaing mechanism for replacment all as directed.

Supply , install, testing and commissioning of HT 11 KV Switch air break, gang operated, triple pole , mechanically operated, mounted on minimum 9 insulators of any type as directed and MS channel frame, with operating mechanism made out of 25 mm dia GI medium grade pipe suitable for operation from ground level with locking arrangement complete for current rating 200 Amps complete all as specified and directed.

Taking down old DO fuse unit S &F expulsion fuse single phase above 50 & up to 100 AMPS capacity, 11000 Volts complete all as specified and as directed.

Taking down existing unserviceable Lightning arresetor and S&F HT lightening arrestor metal oxide type (gap less) heavy duty single pole for 11 KV overhead line/ 4 pole/2 pole structure, suitable for 12 KV rated highest system voltage, long duration distribution discharge class type, IP 55 Degree of protection, 100(kVp) at 65 kA High current impulse withstand voltage and 9 KV Arrestor rating with normal discharge current of 10 KA complete with all fittings conforming to IS: 3070 part-3 effectively connected with earthing system complete all as specified and directed by Engr-in-Charge. Note:- Manufacturer's Test certificate for lighting arrestor shall be produced before claiming for payment.

S&F in repair earth continuity conductor or main earthing lead 32x 6 mm GI strip laid in pipe / fixed to poles or any other indicated situation including jointing using by GI nuts, bolts and washer in addition to welding complete all as specified and directed .

M&L for earthing complete with galvanised steel earth plate electrode 600mm X 600mm X 6mm thick buried directly in ground vertically earth pit not less than 2.25 meter deep below normal ground level (with top edge of earth plate not less than 1.5 meter below ground level) connected to GI earth strip of size 32x6 mm as earthing lead by means of bolts, nuts and washers all as shown in electrical plate No 3 of MES Scedule part I (2009) with conected to eath test point including adequate quantity of charcoal dust and comman salt, PCC (1:3:6) type C-1 chamber and for earth pit with 40x40x6mm mild steel angle iron frame for cover. precast RCC cover 40mm thick (1:2:4) type B1 using 20 mm graded stone aggregate reinforced with 8 mm dia round bars both ways with MS handle 8 mm dia. PGI funnel and wire mesh 20 mm dia GI pipe medium grade for watering and 40mm dia medium grade for earth lead protection pipe including dismantling old earth pit complete all as specified and directed. Note: GI earth strip and protection pipe upto and including 7.5m is deemed included in unit rate quoted by contractor.

M&L for disconnecting carefully electrical connection from both HT/ LT (primary & secondary) sides of the transformer, keeping them at safe side and taking out the transformer/ CSS indoor/ outdoor type of capacity 500 to 750 KVA, 11 KV/ 0.433 KV, step up / step down any make for carrying out complete overhauling which shall comprise of the following:-

(a) M&L 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. (b) M&L for draining out transformer oil from the above said transformer in the suitable capacity of container /drums and keeping it in safe custody for reuse. (c) M&L for cleaning the transformer body from inside, removing deposited dirt/ sludge/ foreign particles etc. from the bottom/ body of the transformer and drying up the shell from inside before refilling of the transformer oil. (d) M&L for cleaning and washing thoroughly core and windings of the transformer by hosing down with clean dry oil( without moisture) conforming to IS 335/1983, removing deposited dirt/sludge/foreign particles from the windings/ core, thorough inspection of windings, providing insulations to leads and terminals, heating/ drying/ baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as directed by Engr-in- charge.

(e) Lifting and refixing core assembly inside the transformer shell gently and carefully, connecting primary/ secondary/ Neutral connections to the bushings assembly, fixing of tap change over including tightening of nuts, bolts, washers of the core to reduce humming noise all as directed. (f) Refilling the filtered transformer oil in the shell of transformer complete. (g) 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 all as directed by Engr-in charge. (h) Lifting/ shifting to the place from where removed or to any location as directed and re-installing the transformer including connecting primary/ secondary/ neutral and earthing connections etc. all as directed by Engr-in-Charge.

(j) The inspection of transformer shall involve:- (i) Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts. (ii) Checking all brazings, joints, tap heads and connection joints. (iii) Checking all jumpers, terminations/ connections inside the transformer. (iv) Checking the Buchholtz relay/ conservator MOG if any. (v) Painting of transformer complete with two coats of synthetic enamel paint externally transformer shell complete all as directed by Engr-in-Charge. (vi) Inspection of tap changer, checking the moving and fixed contacts for contact wear and connection to winding.

(k) Conducting the tests on core and windings as per IS like ratio, magnetic imbalance, short circuit etc. in presence of Engr-in-Charge and test results shall be signed both by the contractor and Engineer -in-Charge and kept on record. Note:- (i) After opening of transformer in presence of Engineer-in-charge, an inventory of defective parts has to be prepared and signed by contractor and Engineer-in-charge. (ii) Any damage to insulators/ bushes/ windings etc. while in the custody of the contractor shall be made good at no extra cost to Department. The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody.

Description same all as per Item No. 22 above but but transformer indoor/ outdoor type of capacity 250 kVA to 400 kVA.

Description same all as per Item No. 22 above but but transformer indoor/ outdoor type of capacity 100 KVA to 200 KVA.

M&L for Filtration of transformer oil of transformers installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration and submit the same signed by both contractor and Engineer in Charge and kept on record complete all as specified and directed.

Supply and topping up of transformer oil with di-electric strength not less than 60 KV in to the conservator tank/ body tank of the transformer/ PSS etc at various locations complete all as directed. Make: Poweroil/ Transol/ Sabitha Chemicals.

M&L for rewinding of distribution (HT/LT) transformers of capacity (50 KVA to 750 KVA)/ type by winding the defective coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials/ bracings before placing in to the transformer and assembling the coil with new insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and directed. Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.

M&L for re-insulating windings of HT/ LT distribution transformers of capacity (50 KVA to 750 KVA) / size/ type by strip opening of HT/ LT coils (i.e. Primary/ secondary coils) from core assembly safely, unwinding the HT/ LT coils (i.e. Primary/ secondary coils) complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, re-varnishing 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 as per IS 1986-87 complete all as specified and directed.

S&F in repair silica gel breather assembly for HT/ LT distribution transformers of the following capacity complete all as specified and directed :-

500 to 750 KVA

250 to 400 KVA

100 to 200 KVA

S&F in repair gun metal drain valves of transformers of following capacities complete all as specified and directed :-

500 to 750 KVA

250 to 400 KVA

100 to 200 KVA

S&Fin repair LT porcelain bushings complete of 50 to 750 KVA capacity distribution transformers of existing transformer make/ size/ type complete all as specified and directed.

S&F in repair HT porcelain bushings complete of 100 to 750 KVA capacity distribution transformers of existing transformer make/ size/ type complete all as specified and directed.

S&F in repair LT bushing rod made out of gun metal with threading & of suitable length/ size all as per existing including metal rings/ bolts/ washers/ rubber rings etc of following capacity distribution transformers of any make/ size/ type complete all as specified and directed :-

500 to 750 KVA

250 to 400 KVA

100 to 200 KVA

S&F in repair HT bushing rod made out of gun metal with threading & of suitable length/ size all as per existing including metal rings/ bolts/ washers/ rubber rings etc of 100 to 750 KVA capacity distribution transformers of any make/ size/ type complete all as specified and directed.

S&F in repair oil temperature indicator (OTI) of 100 to 750 KVA distribution transformers complete all as specified and directed.

Dismantling old rusted cable box and M&L for porviding new cable box made out of MS sheet of thickness not less than 5 mm including fabrication works, welding etc of appropriate size to suit the existing transformer size, including nuts, bolts, cable glands, termination of existing cables and applying two coats of smoke grey colour synthetic enamel paint over a coat of red oxide primer etc complete all as specified and directd for the following capacity transformers:- Note:- The Contractor shall submit the drgs of boxes for approval of GE before manufacturing and placing order.

500 to 750 KVA

250 to 400 KVA

100 to 200 KVA

M&L for preparation of old painted surfaces of transformers with coarse cloth/ brush and painting by means of spray gun throughout externally on exposed surfaces with two coats of smoke grey colour synthetic enamel paint or as approved colour including writing of transformer details on plinth in white enamel paint on black enamel paint back ground complete including one coat of white wash for base foundation complete all as specified and directed for the following capacity in-door/ out-door type transformer:-

500 KVA to 750 KVA

250 KVA to 400 KVA

100 KVA to 200 KVA

M&L for clearing of bushes/small plants upto root level around and surroundings areas E/M installations (i.e.Two Pole/ Four structures, outdoor-substation yards & Misc E/M installations etc) including spraying of chemical for anti-vegetation growth as approved, surface dressing n.exc 15 cm deep and removing debris to a distance n.exc 50m complete all as specified and directed.

Supply and laying pg graded coarse aggregate of following size for outdoor sub-station yards complete all as specified and directed :-

Size 40mm

Size 20mm

M&L for disconnecting carefully electrical connection from both HT/ LT (primary & secondary) sides of the transformer, keeping them at safe side and taking out the transformer/CSS indoor/ outdoor type of capacity 50 to 750 KVA, 11 KV/ 0.433 KV, step up/ step down, including lifting/ shifting , transporting, handling to the place from where removed or to any location as directed and re-installing the transformer carefully including connecting primary/ secondary/ neutral connections etc complete all as specified and directed.

Supply, installation, testing and commissioning as in repair out door 11 KV HT modular type metering cubicle with 0.5 class 11 KV CTs (03 Nos) with CT ratio 200/5 or 1 Amps, 11000/Root3/110/Root3 volts PTs, bushings, connecting bars, control cables duly terminated suitable for use with three phase three wire/ four wire bulk supply energy measurement system. The metering cubicle shall be capacble of continuous operation of rated output under the operating conditions of 11 KV voltage and 50 Hz frequency. the metering cubicle shall be designed for IP-54 compartment, HT cable termination compartment and metering compartment with the following specification complete all as specified and as directed:

Instrument Transformer Compartment: (a) Three No CT's of indoor, single core wound primary with current ratio 200/5 or 1 Amps for 11 KV rated voltage, class 0.5, 5 VA burden, short circuit withstand current 21 KA for 1 sec, 120% rated continuous thermal current, 12 KV basic insulation level, class E thermal insulation, 36 KV power frequency withstand voltage, 95 KV peak impulse voltage withstand capacity and the CTs shall confirm to the IS 2705 Part-1 with latest ammendments. (b) Three No PTs of indoor, single core wound primary, oil coo with ratio 11000/Root3/110/Root3 volts for 11 KV rated voltage, class 0.5, 15 VA burden with voltage factor 1.2 times for continuous operation and 1.9 times for 30sec, 12 KV basic insulation level, class E thermal insulation, 36 KV for 1 minute power frequency withstand voltage, 95 KV peak impulse voltage withstand capacity and the PTs shall be provided with suitable rating of HRC fuses for protection.

Metering Compartment: (a) The metering cubicle shall have compartment to house the energy meter and test terminal block, nitrile rubber gasket to be provided for ingress protection IP 54 and the metering compartment shall have a viewing window with toughened glass of adequate size to ensure clear visibility of energy meter display.

Enclosure: (a) The enclosure and doors shall be made of 3 mm thick galvanized steel sheet confirming to IS 277:2003, tropicalized to meet indian weather condition. (b) All equipments, accessories and wiring shall be provided with tropical finish to prevent fungus growth and parts those are subjected to corrosion under normal working condition shall be protected effectively with protective coating.

Note:- The tri vector energy meters required for metering cubicle shall be measured and paid seperately under relevant item.

M&L for disconnecting carefully HT electrical connection from cable compartments of RMU and earth connections, keeping them at safe custody for refixing and taking out the 3/4 way RMU, 11 KV, 630 Amps of ABB make for carrying out complete overhauling which shall comprise of the following:-

(a) M&L for lifting, transporting, handling, the RMU to OEM workshop, strip opening of RMU, dismantling LBS/VCB, SF6 tank, bus bars, insulators, CTs and other accessories, inspecting the parts for serviceability, leak testing SF6 tanks, leak arresting in case of any leakages noticed, replacement of defective spares such as LBS, VCB, spring charging motors, bus bar supporting insulators, pitted bus bar , re-assembling, testing at site before despatch and transportation, reinstallation, reconnecting all cable connections, earthing connections, testing and commissioning at site complete all as directed. (b) M&L for lifting, transporting, handling, the RMU to the place from where removed or to any location as directed and re-installing the RMU including connecting the cables and earthing connections etc. all as directed by Engr-in-Charge.

Supply only 11 KV, 630 Amps VCB unit in SF6 gas filled SS enclosure compatible for existing 3/4 Way RMU complete all as specified and directed.

Supply only 11 KV, 630 Amps LBS unit in SF6 gas filled SS enclosure compatible for for existing 3/4 Way RMU complete all as specified and directed.

Supply only spring charging motor assembling suitable for existing 3/4 Way RMU complete all as specified and directed.

M&L for earthing complete with copper earth plate electrode 600mm X 600mm X 3.15mm buried directly in ground vertically to a depth not less than 2.25 metre below normal ground level (with top edge of earth plate not less than 1.5 metre below ground level) connected to copper earth strip 20 x 3mm, (main earthing lead) by means of copper bolts, nuts and washers all as shown in electrical plate No 3 of MES Schedule Part-I (2009) with connected to earth test point & to main switch board with & including adequate quantity of charcoal dust and common salt alround earth plate and GI pipe 20 mm dia light grade for watering pipe with funnel & wire mesh, GI pipe 32mm dia medium grade for protection of earth lead including necessary earth work and PCC (1: 3 : 6) type C-1 for earth pit and 40 mm thick precast RCC cover in (1:2:4) type B1 with 3 Nos 8 mm dia TMT bars both ways with 8mm dia round bar handle including dismantling old earth pit complete all as specified & directed. NOTE:- The cost of earth lead and protection pipe upto and including 7.5 mtr only from the top of earth electrode are deemed to be included under this item.

M&L for solid block walling with PCC block (1:3:6) Type C1 (20 mm graded aggregate), straight on plan exc 6m mean radius built in CM (1:6) complete all as specified and as directed.

M&L for 10mm thick rendering in CM (1:4) on fair faces of brick work or concrete surface and even smooth (without using extra cement) complete all as specified and as directed.

Excavation in trenches n.exc 1.5mtr wide and not exc 1.5mtr depth and getting out in soft/loose soil complete all as specified and as directed.

Excavation in trenches n.exc 1.5mtr wide and depth exc 1.5m but not exc 3mtr and getting out in soft/ loose soil complete all as specified and as directed.

Returning and filling in of excavated soil including spreading,levelling,watering and well ramming in layers not exceeding 25 cm each complete all as specified and as directed.

Removal of surplus soil not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and as directed.

185 Sqmm, 3 core.

120 Sqmm, 3 core.

95 Sqmm, 3 core.

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable of 3 core for outdoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal) sand cushioning, concrete cable covers, GI pipe protection will be measured and paid separately.

120 Sqmm to 185 Sqmm

50 Sqmm to 95 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable of 3 core for indoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal) sand cushioning, concrete cable covers, GI pipe protection will be measured and paid separately.

120 Sqmm to 185 Sqmm

50 Sqmm to 95 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable 3 core for outdoor straight through cold shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately.

120 Sqmm to 185 Sqmm

50 Sqmm to 95 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable 3 core for outdoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately.

120 Sqmm to 185 Sqmm

50 Sqmm to 95 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable 3 core for indoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately.

120 Sqmm to 185 Sqmm

50 Sqmm to 95 Sqmm

M&L cable jointing kit for 11 KV (Earthed) grade XLPE cable 3 core for outdoor straight through heat shrinkable type joint complete with jointing material and accessories suitable for following sizes including testing after jointing complete all as specified and directed :- Note:- Earth work ( Excavation, Returning & refilling and removal), sand cushioning, concrete cable covers,GI pipe protection will be measured and paid separately.

120 sqmm to 185 sqmm

50 sqmm to 95 sqmm

M&L for sand cushioning with dry and clean fine river sand for underground cable 8 cm before laying cable and 15 cm after laying and punned to 18 cm after laying of cable complete all as specified and directed. Note:- Punned thickness shall be considered for payment purpose.

S&F in repair of DWC (double wall corrugated) HDPE pipe ISI marked of following size, polythylene confirming to IS 16205 part-24 including coupler & bend with smoooth inernal and corrugated external surface for non pressue under ground cable complete all as specified and directed :-

Outer dia of 77 mm

Outer dia of 90 mm

S&F un-reinforced precast concrete cable cover made as per IS 5820-1970, class HV, flat, type 1, size 300mm x 180mm x 40mm with axis of the cover perpendicular to the axis of the cable as in cable protection complete all as specified and directed.

S&F GI tubes light grade galvanised with all fittings laid in trenches etc for protection of cable GI pipe of following sizes:-

80 mm bore

100 mm bore

Demolition of cement concrete of any description and in any position complete all as specified and directed.

M&L for repair and servicing of HT 11 KV four pole structure by replacing galvanized PG clamps, GI bolts and nuts, pieces of ACSR conductor with insulation of any size as jumpers including lubricating the moving parts of AB switch and cleaning of all disc /pin insulators and applying silicon compound for prevention of arcing due to dust/ salt deposits over the surfaces including applying one coat of zinc oxide primer on rusted portions after preparation of surfaces & a coat of aluminum paint to the entire steel structure complete all as directed. Note:- Rate quoted shall be inclusive of paiting of steel structure, two coats of white wash on exposed concrete surfaces, ACSR conductor for jumpering, GI hard ware like nuts, bolts etc complete

M&L for repair and servicing of HT 11 KV two pole structure by replacing galvanized PG clamps, GI bolts and nuts, pieces of ACSR conductor with insulation of any size as jumpers including lubricating the moving parts of AB switch and cleaning of all disc /pin insulators and applying silicon compound for prevention of arcing due to dust/ salt deposits over the surfaces including applying one coat of zinc oxide primer on rusted portions after preparation of surfaces & a coat of aluminum paint to the entire steel structure complete all as specified and directed. Note:-Rate quoted shall be inclusive of paiting of steel structure, two coats of white wash on exposed concrete surfaces, ACSR conductor for jumpering, GI hard ware like nuts, bolts etc complete.

Cutting /trimming tree branches along the over HT/LT installations up to 3.0 mtr from electric line / equipment on both sides of the span and disposing of the cut tree-branches at places complete all as specified and directed. Note :- (i) Necessary permission will be obtained from department by contractor one day prior to trimming in particuar area and shut down of that area shall be arranged by department. (ii) The tree cutting of 4 pole or 2 pole structure shall be maintained for whole period of contract and the payment shall be made once in entire Contract period only.

M&L for Cutting the tarmac / hard standings and excavating in trenches across the road for laying cable including making good the excavated portion by means of PCC 1:3:6, type C1 matching with the surroundings complete all as specified and as directed.

Dismantling of existing unserviceable stay assy any type/size from its stay rod, cutting stay rod (above ground portion ) including stay GI wire, dismantling MS clamps, nuts, bolts, GI stay bow loop insulators etc including GI wire complete all as specified and directed.

M&L for Stay assembly complete with accessories such as MS stay plate of size 300mm x 300mm x 6mm thick, stay rod 16 mm dia, stay bow, nuts, bolts and check nuts of GI including GI stay strand of size 7/4 mm all as shown in electrical plate No. 1 of SSR Part-I of 2009 complete all as specified and as directed. Note: Earth work ( Excavation, Returning & refilling and removal), PCC, stay clamp and loop type insulators will be measured and paid separately under relevant schedule items.

M&L for PCC (1:3:6) type C-2 (Using 40 mm graded stone aggregate) as in foundation filling and mass concrete or in any indicated positions complete all as specified and directed.

M&L for detecting HT UG cable faults located in any stretch/ depth with sophisticated cable fault locator consisting of microprocessor based pre-locator system, HV surge generator of capacity upto 16 KV, fault pin point surge wave reciever, cable indentification instrument , cable tracer for exact location of under ground cable routes complete all as specified and directed. Note:- The rate quoted deemed to be inclusive of transportation of equipment from any location and charges for service engineer for identifying the fault including their boarding & lodging complete.

M&L for strip opening the metering cubicle of HT panel of rating 11 KV, 3 phase comprising of following repairs, inspecting, overhauling and servicing/ re-fixing of the spares etc complete all as specified and directed :-

(a) Dismantling the complete instrument chamber/ HV cable box/LV cable box .Decarbonising/ cleaning the complete HT 11 KV 3 phase independent bus bar, bus bar chamber of HT panel and inspecting the bus bar insulators. (b) Checking, inspecting the Numeric/ microprocessor/IDMT relays, multifunction meters/energymeters, ammeters and voltmeters for their serviceability and functionality etc complete. (c) Checking complete electrical tripping circuit of HT panel including control wiring from secondary system rotary to tripping coil, auxiliary switch male and female housing cut out, etc. and wiring including replacement of damaged wire at places including operation on DC system, testing and commissioning complete all as directed.

M&L for strip opening the common bus bar cubicle of each incomer/outgoing HT panel of rating 11 KV, 3 phase for repairs, inspecting, servicing, including decarbonising the bus bars, by removing peeled off insulation, fixing new HT insulation, tightening the loose nut bolts, replacing defective nut bolts, replacing portion of pitted bus-bar with insulation etc complete all as specified and directed.

S&F in repair Master Trip Relay suitable for 11 KV HT panel for protection system complete all as specified and directed.

Taking down HT switch gear (Vacuum circuit breaker) of capacity 11 KV 250/350 MVA comprising of following repairs, overhauling, servicing and refixing the same after repairs/ overhauling complete all as specified and directed :

(a) Tripping off the breaker, lowering the breaker with raising/lowering handle and pulling out the breaker complete from the panel along with the trolley for servicing/inspection/overhauling. (b) Servicing/Inspecting/checking of automatic safety shutter operation for serviceability and replacement of spares if required. (c) Servicing/Inspecting/checking of circuit spout and bus bar spout connections for RYB phases and replacement of spares if required. (d) Dismantling and checking of cross bar assembly, fixed contacts and current carrying parts of the breaker, trolley, insulated assembly and checking lamination with clamps, epoxy spout, isolator assembly etc.

(e) Setting, reassembling, cleaning, adjustment of fixed contacts, main contact, arcing contacts and chamber baffle pot assembly, moving contact for proper setting of auxiliary contacts operating mechanism. (f) Servicing/Inspecting/checking of secondary sockets/busbar earthing plugs/earthing sockets and replacement of spares if required. (g) Checking, setting and adjustment of lowering and raising operation of the breaker trolley. (h) Lubrication and greasing of all moving parts of the trolley, stopper bolt for proper operating and closing of shutter gear, isolation resistance of trolley of with vacuum interrupter assembly.

(j) The inspection of HT switch gear shall involve:- (i) Inspection of truck & hoist assembly. (ii) Inspection of tank assembly & barriers. (iii) Inspection of assembly & components of solenoid assembly. (iv) Inspection of assembly & components of dependent mechanism. (v) Inspection of assembly & components of spring box mechanism. (vi) Inspection of motor mechanism spring charge assembly (vii) Inspection of assembly of trip unit & related components

Notes: (i) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of VCB panels with approved colour all as per exisitng etc. to put in to the VCBs and panels in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge. (ii) Major spares like Breaker bushings, vaccum interrupture assly, busbar spout, busbar spout connections, circuit spout/circuit spout connections/buffer fixed contacts, moving contacts, tank assly/barriers, solenoid spares, dependent/spring mechainsm/ motor mechanism, trip unit etc will be measured and paid separately under relevant items of Schedule 'A'. However the rate quoted shall be deemed to include for any other minor spares require replacement. (iii) No of jobs for repairs, overhauling, servicing of RMU of 3/4 way shall be measured based on No of VCBs present in RMU.

Supply only the following spares suitable for 250 MVA to 350 MVA HT switch gear VCBs and 11 KV HT panel for repair complete all as specified and directed:-

1.5 sqmm flexible FRLSH PVC insulated stranded copper conductor cable, unshethed, 1100 V grade for control wiring.

2.5 sqmm flexible FRLSH PVC insulated stranded copper conductor cable, unshethed, 1100 V grade for control wiring.

LED Indication Lamps

LED type push button actuators

Shunt trip coil 24 V DC/30 V DC/110 V DC

CTs epoxy cast wound primary CTs with minimum primary current 50 to 400 A, single/ double ratio, double core (Protection core-5P10 & Metering core- Class 0.5/1.0), 18/21/25 KA for 1 sec of 15 VA Burden.

Breaker control switch

Breaker bushing contact

Vacuum interrupter assembly suitable for Andrew yule / Kirloskar / Schnieder / CG / ALSTOM HT VCBs

Busbar & Circuit Spout

Control circuit fuses 2 A to 63 A

HRC fuse (PT HT side)

PT plug contact

Spring charging motor with gear assembly. Make: Bosch or suitable for HT VCB OEM make

Ammeter 240 deg 144 sqmm.

Voltmeter 240 deg 144 sqmm.

Multifunction meter, Digital type (Displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, KVARh etc.) Class 0.5 with RS485 port for communication in Modbus protocol.

Cast Resin Three phase Potential Transformer 11KV/√3/110V/√3,100VA , Cl 1.0/0.5 with desired capacity PT Fuses & having burden 100 VA

Rachet handwheel with gear assembly

Operating handle of RMU/HT VCB panel

CTs cast resin type with minimum primary current 50 to 100 A, single ratio, single core (Protection core-5P10- Class 0.5/1.0), 18/21/25 KA for 1 sec of 2.5 VA Burden.

O/C + S/C + Earth fault relay suitable for 11 KV RMU/ HT VCB panel for protection system .

Termination Insulation boots of RMU

Voltage Presence Indicator (VPI)

S&F in repair HT energy meter with AC Three Phase Trivector meter, Multifunction DLMS Compliance of Accuracy Class 0.5, 3 X 63.5V, 50Hz with Optical & RS232 Port, Backlit LCD Display, (Measures kWh, kVAh, KVARh, V, I, kW, P.F, 6 months history of Energy, Load survey, RMD, TOD, Tamper detection & logging, Power On/Off Events, instantaneous parameters of Rating -/5 or 1 A with display in absence of power. ( Default PT ratio*: 11kV/110V & CTR: 5A / 1A) including necessary copper control wiring complete complete all as specified and directed.

Repair & Maintenance of 30 V DC charger, inspecting the parts like full wave half controlled float cum boost charger, analog / digital AC voltmeter, AC ammeter, DC voltmeter, DC ammeter, LED indication lamps, AC input circuit breaker, semiconductor fuses for charger bridge, DC circuit breaker and blocking diode, float voltage adjust potentiometer, automatic voltage regulatior functionality and setting the voltage to 30 V, filter circuit, auto phase reversal system and replacing defective spares including painting complete all as specified and directed.

S&F in repairs 2V, 100 AH VRLA lead acid cells with 2.3 V per cell in float charge condiiton, 2.75V per cell in Boost charge condiiton, 1.75V permissible cell voltage at the end of discharge complete with discharge duration of 10 hours all as per existing suitable of DC auxiliary power source all as standard practice complete all as specified and directed.

Repair & Maintenance of 110 V DC charger, inspecting the parts like full wave half controlled float cum boost charger, analog / digital AC voltmeter, AC ammeter, DC voltmeter, DC ammeter, LED indication lamps, AC input circuit breaker, semiconductor fuses for charger bridge, DC circuit breaker and blocking diode, float voltage adjust potentiometer, automatic voltage regulatior functionality and setting the voltage to 110 V, filter circuit, auto phase reversal system and replacing defective spares including painting complete all as specified and directed.

S&F in repair including installation, testing and commissioning of DC power pack with input voltage 230 V AC, output voltage 24/30/48/110/220 V + 2% DC, IP 20, continuous rating load 100 VA, impluse load 450 VA for 240 msec abd backup 15-20 mins (maximum 10 trip attempts), over voltage protection, LED indication for input high, charger on, battery low, over load, battery mode etc complete all as specified and directed.

S&F in repair plates (plain or chequered), channels, angle irons, square cut or notched (ordinary and counter sunk) forming holes, without any attachment all as directed conforming to Fe 410-O 0r Fe 310-O including applying two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer complete all as specified and directed.

S&F in repair Elastomer Insulating Mats for Electrical Purposes Class B/voltage grade upto 11 KV (AC) as per IS : 15652:2006 with ISI mark of thickness 2.50 mm + 10% of approx width not less than1 mtr along with suitable adhesive /chemibound resin waterproofing compound and sealing material all as per manufacturers' recommendations complete all as specified and directed.

Taking down the damaged HT aerial barrel fuse from the 4 pole / 2 pole structure, supply and fix 11 KV aerial fuse of rated current carrying capacity 20 Amps after cleaning the contacts of fuse link with CRC solution complete all as specified and as directed. Note:(i) All the 3 phases of aerial fuses should be changed and replacement of all the 3 phase fuses considered as one job. (ii) Each Job will be measured and paid when ever replaced through Job Card.

Taking down the damaged HT aerial barrel fuse from the 4 pole / 2 pole structure, supply and fix 11 KV aerial fuse of rated current carrying capacity 40 Amps after cleaning the contacts of fuse link with CRC solution complete all as specified and as directed. Note: (i) All the 3 phases of aerial fuses should be changed and replacement of all the 3 phase fuses considered as one job. (ii) Each Job will be measured and paid when ever replaced through Job Card.

Taking down the damaged HT aerial barrel fuse from the 4 pole / 2 pole structure, supply and fix 11 KV aerial fuse of rated current carrying capacity 60 Amps after cleaning the contacts of fuse link with CRC solution complete all as specified and as directed. Note: (i) All the 3 phases of aerial fuses should be changed and replacement of all the 3 phase fuses considered as one job. (ii) Each Job will be measured and paid when ever replaced through Job Card.

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