8350-REPAIRS TO LOW TENSION EXTERNAL ELECTRIFICATION AND ALLIED WORKS AT INSIDE OTA CHENNAI UNDER GE STM

Amount

Excavation in trenches n.exc 1.5 mtr wide and n exc 1.5 mtr in depth and getting out in soft/ loose soil for laying cables / GI pipe, foundation of pole, stay etc complete all as specified and as directed by Engr - in - Charge.

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

Returning, filling in including spreading, levelling, watering and well ramming in layers n.exc 25 cm in soft/loose soil complete all as specified and as directed by Engr - in - Charge.

Supplying and laying burnt Flyash bricks class old size for protection of cable as directed.

Fine Seived excavated dry Soil laid to the required width of trench at botom and top of cable as cushioning all as specified and as directed.

Taking out from trenches/poles/wall etc LT XLPE UG Cable /PVC Sheathed aluminium conductor armoured and relaying after fault rectification duly tested in trenches/Poles/Wall of LT UG Cable size of following sizes :Note: Rate including Earth Work. Jointing Kit will be measured and paid separately under relevant Item

(a) LT UG Cable 2/ 3.5/ 4 core 6 Sqmm to 3.5 core 50 Sqmm

(b) LT UG Cable 3.5 core 70 Sqmm to 3.5 core 300 Sqmm

Taking down old UNSV UG Cables and taking as schedule of credit including, Supplying, laying, jointing and testing LT underground cable, heavy duty, 1100 Volts, XLPE insulated and sheathed, armoured with multi-stranded aluminium conductor cable , laid in trenches/ducts or fixed to poles/walls or laid under roads/paths/drains/culverts complete all as specified and directed of following sizes:

(a) LT UG Cable 4 core 10 sqmm .

(b) LT UG Cable 4 core 16 sqmm .

(c) LT UG Cable 4 core 25 sqmm .

(d) LT UG Cable 3.5 core 35 sqmm .

(e) LT UG Cable 3.5 core 50 sqmm .

(f) LT UG Cable 3.5 core 70 sqmm .

(g) LT UG Cable 3.5 core 95 sqmm .

(h) LT UG Cable 3.5 core 120 sqmm .

(j) LT UG Cable 3.5 core 150 sqmm .

(k) LT UG Cable 3.5 core 185 sqmm .

S&F inrepairs Straight through joints Heat Strink insulations and sealing system for underground cable including joint kits and labour complete for making joints suitable for LT XLPE/ PVC sheathed/ armoured heavy duty cables with aluminium conductor all as specified and as directed of following sizes:-

(a) 3.5/ 4 core 35 Sqmm

(b) 3.5/ 4 core 50 Sqmm

(c) 3.5/ 4 core 70 Sqmm

(d) 3.5/ 4 core 95 Sqmm

(e) 3.5/ 4 core 120 Sqmm

(f) 3.5/ 4 core 150 Sqmm

(g) 3.5/ 4 core 185 Sqmm

(h) 3.5/ 4 core 240 Sqmm

(j) 3.5/ 4 core 300 Sqmm

(k) 3.5/ 4 core 400 Sqmm

Taking down old UNSV Main switch/ Switch fuse Unit and taking as schedule of credit including Supply & Fix following MCCBs Thermal magnetic release type directly fixing to main board/panel /walls including new alteration to panel with all necessary accessories all as specified and directed.

(a) MCCB 63A , 4 pole , 16 KA

(b) MCCB 100A , 4 pole , 16 KA

(c) MCCB 125A , 4 pole , 16 KA

(d) MCCB 160A , 4 pole , 35 KA

(e) MCCB 200A , 4 pole , 35KA

(f) MCCB 250A , 4 pole , 35 KA

(g) MCCB 350A , 4 pole , 35 KA

Supply & Fix in repairs 3 phase 04 pole ON-LOAD / Change over Switch with advanced Neutral type of capacity 200 Amps including taking out old unserviceable one directly fixing to main board/panel /walls including all necessary accessories all as specified and directed.

Supply & Fix inrepairs 3 phase 04 pole ON-LOAD / Change over Switch with advanced Neutral type of capacity 320 Amps including taking out old unserviceable one directly fixing to main board/panel /walls including all necessary accessories all as specified and directed.

M & L inreplacement for factory made sheet metal encloser (junction panel) made out of 14 SWG CRCA sheet powder coated weather proof out door type with 60cm long legs 4 Nos made out of 40X40X6mm equal angle size of encloser not less than 75X60X30cm depth with front and rear openable double door with locking arrangement including 4 strip aluminium bus bar of rating 600 Amps suitable for one incoming and 5 out going feeders, mounted on insulators including disconnection of cable from the burnt bus bar and connection in the new chamber with bolts and nuts, including thimbles of suitable sizes, neccessary earth work and PCC foundation for grouting of four legs all as per existing.

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 10 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 16 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 25 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 50 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 70 Sqmm

Supply & Fix inrepairs aluminium tube terminals(cable lugs) of size 95 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 120 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 150 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 185 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 240 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 300 Sqmm

Supply & Fix inrepairs aluminium tube terminals (cable lugs) of size 400 Sqmm

Checking of APFC panels/capacitors bank panels, servicing of the same, cleaning of the switch gears, busbars with CTC to remove the carbon deposits, checking the connections, functioning of the components such as capacitors, contactors, switch gears etc., disconnecting and removing of burnt out cable end portions, crimping with new suitable lugs, removing of burnt out thyristors reconnecting back and testing complete for maintaining efficient power factor at the sub station all as directed. Note: Inspection of APFC panel shall be carried by the representative of OEMs of L&T/Neptune/Epcos only.

Dismantling unserviceable power factor improvement capacitor of various capacities and Supply and fix heavy duty Cylindrical capacitors AC 440 volts, 50 Hz, Delta connection new power factor improvement capacitor of following capacities complete all as specified and directed.

(a) 25 KVAR Capacity

(b) 20 KVAR Capacity

(c ) 15 KVAR Capacity

(d) 10 KVAR Capacity

(e) 5 KVAR Capacity

S&F in replacement of Four pole MCB 40 to 63 Amps 10 KA C curve series ISI marked including necessary connections compete all as specified and as directed.

S&F in replacement Contactor suitable for 20 to 25 KVAR 415 Volt, 3 pole including necessary connections compete all as specified and as directed.

S&F in replacement Contactor suitable for 15 KVAR 415 Volt, 3 pole including necessary connections compete all as specified and as directed.

S&F in replacement Contactor suitable for 5 to 10 KVAR 415 Volt, 3 pole including necessary connections compete all as specified and as directed.

S&F in replacement power factor control relay (APFC) 12 step including necessary electric connections and testing including dismantling unserviceable power factor control relay from the panel boards, complete all as specified and directed.

S&F inreplacement of 230 Volt Control relay ,all as directed. Make : L&T / Siemens / ABB

S&F inreplacement of LED type three phase Voltmeter ,all as directed.

S&F inreplacement of LED type three phase Amper meter with CTs ,all as directed.

S&F inreplacement of MCB, SP, 6 Amps, having breaking capacity 10 kA, dual termination, isolation function with visual indication complete all as specified.

S&F inreplacement of push buttons with 1 NO / 1 NC, screw type for operation of capacitors all as per sample available at sub stations including necessary electric connections and testing including dismantling unserviceable push buttons (start/stop button) from the power factor capacitor panel boards complete all as specified and directed.

S&F in repairs, LED indicating lamps of red/yellow/ blue/green /amber with bulbs including connection and testing complete all as specified and directed.

M&L for replacement of lock assembly with two nos keys for old/existing LT panel board any type/size complete all as directed

S & F inrepairs locking arrangement with aldrop bolt set complete of size 225 mm to existing feeder pillar box by welding including taking down old worn out locking arrangement complete all as specified.

Supply only first-aid box with suitable medicine (As per medical norms).

Dismantling unserviceable/ burnt electric wiring from the power factor capacitor panel boards of capacity 80 KVAR, cleaning the panel with CTC to remove the carbon deposits, rewiring of control circuit of the panel boards with suitable size of PVC insulated, sheathed, stranded copper cable of 2.5/4.0/6.0/10 Sqmm/existing size, including provision of suitable copper lugs, bolts, nuts, washers etc., complete including electric connections and testing complete all as specified and directed. Note: Power Capacitor, Contactor, MCBs will be measured and paid on revelent items

S&F in repairs, medium duty copper lugs suitable for 35 Sqmm size cable complete all as directed.

S&F Reflector adhishive tape 25 mm with suitable for fixing in street light pole, colour of paint as decided by Engr in charge.

Supply and spread stone metal graded aggregate of size 40 mm in transformer yard at various locations complete all as directed by Engr-in-Charge.

M&L for Broken stone or Boulders hardcore of gauge not exc. 63mm, deposited, spread and levelled in layer not exc. 150mm thick, watered and rammed to a true surface, complete all as spacified and directed.

S&F inrepairs of steel tubes light grade of size 80 mm dia galvanised with all fittings and fixed complete to walls and ceiling or laid in treanches, fixed on pole /under road crossing or passing through gutters etc including necessary road cutting and making good with PCC 1:2:4 type B1 (using 20 mm graded crushed stone aggregate) complete, including taking down old u/s GI tubing all as specified and as directed.

S&F in repairs of steel tubes light gradeof size 50 mm dia galvanised with all fittings and fixed complete to walls and ceiling or laid in treanches, fixed on pole /under road crossing or passing through gutters etc including necessary road cutting and making good with PCC 1:2:4 type B1 (using 20 mm graded crushed stone aggregate) complete, including taking down old u/s GI tubing all as specified and as directed.

S&F in repairs of steel tubes light grade of size 40 mm dia galvanised with all fittings and fixed complete to walls and ceiling or laid in treanches, fixed on pole /under road crossing or passing through gutters etc including necessary road cutting and making good with PCC 1:2:4 type B1 (using 20 mm graded crushed stone aggregate) complete, including taking down old u/s GI tubing all as specified and as directed.

Supply and laying inreplacement of 1100 volts grade heavy duty cable with PVC insulated aluminium conductor served with an inner sheathing of PVC tape and overall PVC sheathed twin core 4 sq. mm nominal cross section in service connections incl necessary connection etc complete all as specified and directed.

Supply and laying inreplacement of 1100 volts grade heavy duty cable with PVC insulated aluminium conductor served with an inner sheathing of PVC tape and overall PVC sheathed twin core 6 sq. mm nominal cross section in service connections etc complete all as specified and directed.

S&Fing in replacement Danger notice plate of 1.6 mm thick mild stell sheet, vitreous enamelled white, with letters , figures and conventional skull and bones in signal red colour and fixed with MS clamps , bolts and nuts of approved size for LT 20x15 cm size all as specified and directed. Note :- Instruction shall be written in three lauguage Hindi, English and Tamil on notice board.

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 3.3 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m.

S&F /erect/ ground LT cable route indicator made out of GI plate 3 mm thick and 6 inches dia duly marked with working voltage, size of cable and route indicator fixed with angle iron of size 25 x25 x3 mm thick, 50 cm long embedded in PCC 1:2:4 type B1 of size 30 x 30 x 30 cm in ground all as specified and as directed

Supply only GI Nuts, bolts, screws, washers of required sizes.

M&L for load balancing of Single/three phase system at LT Panel upto Distribution box of any size and capacity complete including disconnecting of existing cables and refixing the same as per load balance requirement including replacement of burnt/carbonized aluminium tube terminal of any size and capacity all as specified and as directed by Engr-in-charge.Note : (i) Necessary eqpt and safety mesures reqd for load balancing arranged by the contractor without any extra cost. (ii) Cost of New aluminium tube terminal of any size as per site reqmt change under the job deemed to be included in the quoted rate.

M&L for surface dressing and proper laying of XLPE electrical cable of any size and capacity nearby the LT Panel after disconnecting all incoming and outgoing connection complete , necessary earthwork as required all as specified and as directed by Engr-in-charge. (Note : Rate of necessary earthwork as required at site are deemed to be included in the quoted rate)

S&F in replacement of Air termination, single pointed Aluminium rod 12 mm dia and 300 mm along with saddles and screws including taking down old complete all as specified and as directed.

S&F in replacement of Aluminium strip 25 x 3.15mm with saddles and fixing screws etc for roof conductors and down conductors above ground level including taking down old complete all as specified and as directed.

S&F in replacement of Test point terminal block made of gun metal or phosphorus bronze size 75x75 x25 mm drilled and screwed along with saddles incuding 3 Nos 8 mm dia 25 mm long hex head screw complete all as specified and as directed

M&L for prepartion of old painted surfaces of LT panel/Feeder piller box of any type outdoor/indoor including removing old paint with scrubing and applying one coat of synthetic emanel paint of shade as per existing over a coat of red oxide primer,with electrically operated spray machine , complete all as specified and directed.

Repair of earth pit incl required exacavation, earth work and PCC work to make good damaged/disturbed surfaces of earth pit chamber & making new pit cover of RCC 1:2:4 type B-1 using 20mm graded stone aggregate reinforced and lifting handle on RCC cover with 8 mm MS bars at 150 mm centre to centre both ways incl supply & fixing of wire mesh and funnel including re-connection of earth wire/strip with panel/transformer using GI nut, bolts & washer complete all as specified & directed

M&L for checking of earthpit results, cleaning pit area complete, pouring of salt water as reqd in pit for maintaning of pit resistance up to less than 3 ohm complete all as specified and directed.

Material & Labour for Earthing complete with galvanised steel earth plate electrode of size 60 cm x 60 cm x 6 mm thick burried directly in ground vertically to a depth of not less than 2.25 mtr below normal ground level with top edge of earth plate not less than 1.5 mtr below normal ground level, connected to steel strip 25X4 mm dia by means of bolts, nuts, washers and check nuts made out of galvanised iron, protected by GI pipe light grade 15 mm bore dia and connected to main control board all as shown in Electrical plate No 5 of MES SSR Part I including necessary excavation and earth work in any type of soil, salt, charcoad dust, PCC 1:2:4 type B1 in chamber, RCC 1:2:4 chamber cover with 6 mm dia MS bar at 100 mm centre to centre both ways and MS 6 mm dia hook complete all as specified and directed.

M & L for Earthing complete with galvanised steel earth plate electrode of size 60 cm x 60 cm x 6 mm thick buried directly in ground vertically to a depth of not less than 2.25 mtr below normal ground level with top edge of earth plate not less than 1.5 mtr below normal ground level, connected to earth wire 4 mm dia by means of bolts, nuts, washers and check nuts made out of galvanised iron, protected by GI pipe light grade 15 mm bore dia and connected to main control board all as shown in Electrical plate No 5 of MES SSR Part I including necessary excavation and earth work in any type of soil, salt, charcoal dust, PCC 1:2:4 type B1 in chamber, RCC 1:2:4 chamber cover with 6 mm dia MS bar at 100 mm centre to centre both ways and MS 6 mm dia hook complete all as specified and directed.

S&F in repairs for in formatory/eqpt history sign boards of size not less than 900 x 600 mm rectangular type with 2 mm thick MS sheet plain type made out of angle iron channels frame, back ground and epqt history details(i.e. Name, Make, Ser No,Capacity of eqpt, Vintage, SM/MES No etc.,) with high intensity retro reflective sheet letters as specified colours (blue and white) complete all as specified and directed.

M & L inreplacement of old damaged/ worn out/rusted sign board of any size/type from various installations. Supply and fix Stainless Steel Signage Boards as per site requirement with retro reflective sheet of size 8 feet X 3 feet of 2mm thickness with SS pole of 6 feet height and suitable size of borders of stainless Steel. The display board should high density retro reflactive sheet letter as specified colours (blue and white) complete all as specified and directed. The printing of Letters/ Alphapets/lobo of MES etc will be directed by Engr-in-Charge.

Dismantlling and breaking down the existing, M & L for Plain cement concrete 1:2:4 type B0 using 12.5mm graded aggregate for coping to pole foundation including necessary form work with fair finished surface all as directed.

Dismantlling and breaking down the existing, M & L for Plain Cement concrete 1 : 4 : 8 type C1 using 20 mm graded stone aggregate for pole foundation, filling and mass concrete all as specified.

Finding and rectification of electrical fault by Checking of external/internal elect supply feeder, street light feeder,OH conductors /under ground cables using elect tools, equipments and safty devices after arranging elect shut down of feeders from sub station to remove elect faults like tightning of loose connection,removing of any electric short,meggring of cable,excavation of soil for removing of faulty cable on a particular span and relaying of cables after removing of fault, re-tightning of cable lugs etc all as required at site and as directed by Engr in Charge. Note:- (i) The electrician employed for the purpose will be highly skilled along with one mate and should have all necessary tools and saftey devices. (ii) Any major materials used for rectification of faults like Cables,MCB/MCCB/cable jointing kits/cables of any type etc will be measured and paid seperately or supplied by department.

ADVAITH ENGINEERING

Vantage System and Sevices

S.M.ELECTRICALS

M/S.RANGA AND CO

SRI LAKSHMI ASSOCIATES

ragavbuilders