REPAIR / MAINTENANCE OF LT PANELS, DISTRIBUTION FEEDER PILLAR BOXES AND OTHER CONNECTED WORKS AT NAVAL PARK, NAUSENA BAUGH, AMZARI PARK AND ALLIED AREAS UNDER AGE E/M NO-I OF GE (UTILITY-I) VISAKHAPATNAM

Amount

Supply & laying LT XLPE insulated, armoured heavy duty electric cable with alumimium conductor, 1100 volts grade, cross sectional area 16 Sqmm x 4 Core, laid in trenches / duct / on pole including taking down existing cable complete all as specified and directed. Make :- Havells / KEI / Polycab / Gloster / Finolex

All as per Sl item No. 1.00 but cross sectional area 25 Sqmm x 4 Core

All as per Sl item No. 1.00 but cross sectional area 50 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 70 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 95 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 150 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 185 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 240 Sqmm x 3.5 Core

All as per Sl item No. 1.00 but cross sectional area 400 Sqmm x 3.5 Core

Excavation in trenches, not exc 1.5 m wide and not exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out all excavated material in soft / loose soil complete all as specified and directed.

Removing of excavated surplus soil to a distance n. exc 50 m and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed.

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

M&L sand cushioning with clean and dry sand in trenches for protection of UG cable and including punning down complete all as specified and directed. Note:- Punned thickness shall only be measured and paid.

Supply & laying sub class 'B', class designation 75 bricks of old size, laid along alignment of cable as protection to cable in trenches complete all as specified and directed.

S&F danger notice plate of size 25 x 20 cm & 1.6mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size for HT including dismantling old one compete all as specified and as directed.

S&F aluminium lugs to cable end suitable for LT/HT cable of size of 16 to 70 sqmm complete all as specefied and directed.

All as per Sl item No. 16.00 above but suitable for LT/HT cable of size of 90 to 240 sqmm

M&L for preparation of external surfaces of LT panels indoor/outdoor type by scraping down old dusted paint by steel brush, brooming, rubbing and cleaning including spray painting with two coats of synthetic enamel paint over a coat of red oxide primer as approved and marking feeders by Engineer-in-Charge. Make of paint :- Jotun India Pvt Ltd / Asian Paints / Berger / Jenson & Nicholson Paints Ltd / Shalimar Paints Ltd

M&L for decarburizing / cleaning complete LT 415 Volts 3 phase panel / bus bar chamber with electrical connections, bus bar, cleaning with CTC and ensure proper decarburizing, re-fixing the same after applying becktol Red solution to the bus bar insulator & checking all the connections, tightening the nuts, bolts & thimbles of incoming / outgoing system complete including replacement of defective rusted bolts & nuts all as specified and directed.

M&L earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to earth lead of galvanised iron strip 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel, all as shown in electrical plate No. 3 connected to earthing test point including dismantling existing old earthing complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, Main earthing lead from earth electrode to test point upto 7.5 m length, 20 mm bore medium grade GI watering pipe, 40 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

M&L for removing connections of old LT UG cable of size 16 to 100 Sq mm, 3.5 / 4.0 core from existing MCCB / ACB of LT Panel including cutting & removing the burnt end & reconnecting the same with MCCB / ACB with & including new aluminium thimble / lugs set, covering with proper insulation tape, clamps, nut bolts etc (as required) complete all as specefied and as directed.

All as per Sl item No. 21.00 above but for LT UG cable of size 120 to 240 Sq mm

M&L for taking out the loose or separated Door / canopy / front & back sheet covers from existing LT panel and refixing the same after welding, providing nut bolts / hinges if required as per site, proper locking arrangement and fixing of proper earth connection etc complete all as specefied and directed.

M&L including replacement of out door panel board canopy door, made out of 3.15 mm thick CRCA sheet, duly power coated with removable door hinges, water proof rubber beading and locking arrangement with SS aldrop & pad lock/ concealed locking arrangement, danger notice boards, mentioning panel details including gas welding for fixing the door complete all as directed. Note:-Unit rate quoted shall be considered to include locking arrangement with SS aldrop & pad lock/ concealed locking arrangement, danger notice boards, etc reqd for one LT panel. Contactor shall quote their rates accordingly.

All as per Sl item No. 24.00 above but made out of 2 mm thick CRCA sheet.

M&L straight through joint, heat shrinkable type complete with jointing materials and accessories, suitable for 1.1 KV, 3.5/4 core XLPE aluminium conductor cable of size 240 Sqmm including taking down old joint complete all as specified and directed. Make:- 3M / Denson / Raychem

All as per Sl Item No. 26.00 but suitable for cable of size of 3.5 core 150 to 185 Sqmm

All as per Sl Item No. 26.00 but suitable for cable of size of 3.5 core 50 to 120 Sqmm

M&L for removing electrical connections of 3 / 4 pole Air circuit breaker of capacity 630 to 1000 Amps, 415 V, 50 HZ of any make, strip opening of the ACB, inspecting the parts for serviceability / overhauling complete and carrying out following repairs / maintenance :- a) Cleaning insulation parts including bushings with CRC solution. b) Checking alignment and condition of movable and stationary contacts and adjust them all as per manufacturer's instructional manual. c) Checking the bolts, nuts, washers, cotter pins and all terminal connections are in place and tight, replacing worn-out parts. d) Checking arc chutes for damage and replacing damaged parts. e) Cleaning and lubricating the operating mechanism with light machine oil (SAE-20 or 30) for pins and bearings and with a non-hardening grease for wearing surfaces, adjusting breaker operating mechanism all as per manufacturer's instructional manual, replacing the same if there is excessive wear and tear. f) Checking / inspecting shunt trip coil for serviceability and replacing the same if required. g) Replacing worn or burned contacts, Checking control device free for operation. h) Checking after servicing the circuit breaker to verify the contacts move to the fully opened and fully closed positions, that there is an absence of friction and that the electrical operation is functional. Note : (i) The rate quoted deemed to be inclusive of T&P and minor spares like lubricants, nuts / bolts / washers / pins etc. (ii) Major spares like contacts, shunt trip coil, relays, CTs etc if replaced, shall be measured & paid separately.

S & F in repairs cluster contact make as per OEM suitable for air circuit breakers of capacity 630 to 1000 Amps all as specified and directed.

S & F in repairs Tripping coil (110 /220 V DC or 240 V/415 V AC) make as per OEM suitable for air circuit breakers of capacity 630 to 1000 Amps all as specified and directed.

S & F in repairs auxilary contact block make as per OEM suitable for air circuit breakers of capacity 630 to 1000 Amps all as specified and directed.

S & F in repairs arc chutes make as per OEM suitable for air circuit breakers of capacity 630 to 1000 Amps all as specified and directed.

S & F in repairs rating plug make as per OEM suitable for air circuit breakers of capacity 630 to 1000 Amps all as specified and directed.

S & F in repairs shunt release (110 / 220 V DC or 240 / 415 V AC) make as per OEM suitable for ACB of 630 to 1000 Amps capacity complete all as directed.

S & F in repairs arcing contacts (fixed/ moving) make as per OEM suitable for ACB of 630 to 1000 Amps capacity complete all as directed.

S&F MCCB 4 pole 200 Amp, thermal with adjustable overload setting 0.8-1.0 In adjustable short circuit setting 6-10 In breaking capacity 35 kA, Ics = 100% Icu including necessary modification in the panel & taking down existing MCCB complete all as specified and as directed. Make :- L&T / Havells (Brand- HIM & HIX) / Panasonic / Hager / ABB / Legrand / Indo Asian (Optipower)

All as per Sl item No. 37.00 above but 250 Amp

All as per Sl item No. 37.00 above but 400 Amp

All as per Sl item No. 37.00 above but 630 Amp & breaking capacity 50 kA

S&F MCCB 3 pole 63-100 Amps breaking capacity 16 KA, Ics = 100% Icu including necessary modification in the panel & taking down existing MCCB complete all as specified and directed. Make :- L&T / Havells (Brand- HIM & HIX) / Panasonic / Hager / ABB / Legrand / Indo Asian (Optipower)

All as per Sl item No. 41.00 above but 125 Amp

S & F in repair of epoxy insulators suitable for supporting of busbars with panel board base including nuts and bolts and making holes in the CRCA sheet all as as required at site and as directed by Engr-in charge.

S&F current transformer, Ratio 100 - 400 / 5, accuracy class 1, burden upto 5VA including taking down existing Current Transformer complete all as specified and directed. Make :- AE / English Electric / Crompton Greaves / Areva T&D / Schneider / Alsthom / Kappa / Siemens

All as per Item No. 44.00 but ratio 500-1000 / 5

All as per Item No. 44.00 but ratio 1000-2000 / 5

S&F phase indicator lamps (Red, Yellow and blue) suitable for fitting in existing panel including taking down old one complete all as specified and directed. Make:- L&T / Siemens / GE / RR Micro / BCH / Schneider

S&F cubical type LT panel board of size 1.8 m x 1.5.m x.06 m, outdoor type, factory made from CPRI approved factory, made out of 3.15 mm thick CRCA steel sheet and including MS angle iron 50 x 50 x 6 mm frame work, legs 0.6 m long, MC 100 channel base, totally enclosed, dust & vermin proof using neoprene rubber gasket (IP-54), double leaf door shutter in front side and single leaf shutter in rear side fixed with hinges having necessary locking arrangement in both front and rear door, with four side projected slanting roof, provided with louvers for ventilation / heat dissipation, duly powder coated of approved shade over a coat of red oxide primer both internally and externally and including mounting on PCC platform made out of PCC 1:3:6, 150 mm thick (100 mm below & 50 mm above GL) all round the panel board and including necessary earth work.(Contd...)

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