REPAIRS AND MAINTENANCE OF EM INSTALLATIONS AND ALLIED EXTERNAL ELECTRIFICATION WORKS UNDER GE STM CHENNAI

Amount

BOQ ON 19 DEC 2022 (THIRD CALL)

SCH A PART I & II

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m depth and getting out soft / loose soil for laying cables / pipes / erection of poles etc all as specified and as directed.

Removing excavated material (soil) not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point all as specified and as directed.

Returning filling in soil including spreading leveling watering well ramming in layers not exceeding 25 cm each all as specified and as directed.

Laying of Fine Sieved Excavated Dry Soil including spreading / leveling as cushioning for underground cables in trenches all as specified and as directed.

Supply and laying reinforced precast concrete cable cover, class HV, type 1, Flat, size 300 mm x 180 mm x 40 mm complete all as specified and as directed.

Supply and laying in trenches/poles/wall etc HT UG Cable XLPE insulated with multistranded aluminium conductor armoured with galvanised steel wire / taps 11000 volts grade conforming to IS specifications of size 3 core 95 sqmm including taking down the old UG cable complete all as specified and as directed. Notes :-Earth work excavation ,sand cushioning & cable cover shall be measured and paid for separately

Supply and laying in trenches/poles/wall etc HT UG Cable XLPE insulated with multistranded aluminium conductor armoured with galvanised steel wire / taps 11000 volts grade conforming to IS specifications of size 3 core 120 sqmm including taking down the old UG cable complete all as specified and as directed. Notes :-Earth work excavation ,sand cushioning & cable cover shall be measured and paid for separately

Supply and laying in trenches/poles/wall etc HT UG Cable XLPE insulated with multistranded aluminium conductor armoured with galvanised steel wire / taps 11000 volts grade conforming to IS specifications of size 3 core 185 sqmm including taking down the old UG cable complete all as specified and as directed. Notes :-Earth work excavation ,sand cushioning & cable cover shall be measured and paid for separately

Supply and laying in trenches/poles/wall etc HT UG Cable XLPE insulated with multistranded aluminium conductor armoured with galvanised steel wire / taps 11000 volts grade conforming to IS specifications of size 3 core 240 sqmm including taking down the old UG cable complete all as specified and as directed. Notes :-Earth work excavation ,sand cushioning & cable cover shall be measured and paid for separately

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor of size 3 core 95 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor of size 3 core 120 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor of size 3 core 185 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor of size 3 core 240 sqmm complete all as specified and as directed.

Supply and fixing Straight through heat shrink type joint for 11 KV(Earthed) grade underground cable including jointing materials and accessories including labour complete for making joint suitable for HT, UG, 3 core, XLPE / armoured heavy duty cable with aluminium conductor of size 95 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor complete for making joint suitable for HT, UG, 3 core, XLPE / armoured heavy duty cable with aluminium conductor of size 120 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor complete for making joint suitable for HT, UG, 3 core, XLPE / armoured heavy duty cable with aluminium conductor of size 185 sqmm complete all as specified and as directed.

Supply and fix cable joints out door type for underground cable including joint kits and labour complete for making joints/End Terminals suitable for HT 11 KV UG XLPE cable / armoured heavy duty cables with aluminium conductor complete for making joint suitable for HT, UG, 3 core, XLPE / armoured heavy duty cable with aluminium conductor of size 240 sqmm complete all as specified and as directed.

Supply and install switch Air Break gang operated triple pole ,mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level complete with 9 insulators of rating upto 200 Amp 11000 volts including taking down old complete all specified and directed .

Supply and fix of tubes light grade of size 80 mm bore galvanised with all fittings and fixed complete to walls and ceiling or laid in trenches, 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) for 60 cm depth for full width and length of trench including taking down old u/s GI tubing complete all as specified and as directed. Note : The length of pipe shall be considered for payment

Supply and fix of tubes light grade of size 100 mm bore galvanised with all fittings and fixed complete to walls and ceiling or laid in trenches, 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) for 60 cm depth for full width and length of trench including taking down old u/s GI tubing complete all as specified and as directed. Note : The length of pipe shall be considered for payment

Supply and fix Pin type insulator ,porcelain,vitreous,white brown, including one galvanised mild steel spindle ,two galvanised iron washer and one galvanised iron nut ,150 mm dia and 150 mm height for 11000 volts grade including taking down old unserviceable insulators. all as specified and directed by Engr-in-Charge

Supply and fix Disc type porcelain insulators 145 mm height and 255 mm dia ball and socket type ,white ,brown or green single disc assembly for tension with tension clamps for conductors working pressure 11000 volts grade including taking down old unserviceable insulators. complete all as specified and directed by Engr-in-Charge

Supply and fix for loop type porcelain vitreous white brown, or green insulator with over all dimension 90X140 mm clearance of hole 25.5 mm including taking down old unserviceable insulators all specified and directed .

Material and labour for ACSR conductor (Sqirrel type) of any size for HT/LT over head line and jumpers on PCC/RCC/Steel pole including binding wires line connecting up etc of any size including taking down old unserviceable ACSR all specified and directed .

Material and labour Cross arms bracing supports clamps and back pates fabricated from structural steel sections including nuts bolts washers welding bending cold or hot drilling holes for bolts in any shape or size as indicated including taking down the old directed and inclusive of one primer coat one under coat and one finishing coat of paint

Service charges for carrying out servicing of GOD by application of lubrication of the mechanism & greasing with petroleum Gel all as specified and directed Note: Minimum spares /lubricants and tools required for the job shall deem to have been included in the quoted rates.

Supply and Fix Tinned copper(TC) HT fuse wire 60 Amps all as specified and as directed

Supply and Fix Tinned copper(TC) HT fuse wire 40 Amps all as specified and as directed

Supply and Fix Tinned copper(TC) HT fuse wire 20 Amps all as specified and as directed

M & L for applying one coat of synthetic enamel paint to transformer of capacity 100 KVA to 400 KVA including writing of following letters "SM/MES No XYZ complete all as specified and as directed.

Supply and fix lighting arrester expulsion type complete with all fitting transmission class ,discharge capacity 65 Kilo Amp 11000 Volts rating including dismantling old unserviceable lighting arrestor complete all as specified and directed.

Supply and fix Expulsion type drop out fuse with all accessories and contact insulator etc fixed on HT pole rating above 10 and up to 25 Amps suitable for 11KV 3 pole with two Nos insulator per pole including dismantling old unserviceable one complete all as specified and directed.

Supply and fix Expulsion type drop out fuse with all accessories and contact insulator etc fixed on HT pole rating above 25 and up to 50 Amps suitable for 11KV 3 pole with two Nos insulator per pole including dismantling old unserviceable one complete all as specified and directed.

Supply and fix Expulsion type drop out fuse with all accessories and contact insulator etc fixed on HT pole rating above 50 and up to 100 Amps suitable for 11KV 3 pole with two Nos insulator per pole including dismantling old unserviceable one complete all as specified and directed.

Supply and fix HT Load Break Switch fuse rating of 40 Amps Type C-1, 11 KV complete all as specified and directed including dismantling old unserviceable one complete all as specified and directed. Make Eswari Electricals (Anand Fuses) or Equivalent

Supply and fix HT Load Break Switch fuse rating of 50 Amps Type C-1, 11 KV complete all as specified and directed including dismantling old unserviceable one complete all as specified and directed. Make Eswari Electricals (Anand Fuses) or Equivalent

Supply and fix HT Load Break Switch fuse rating of 63 Amps Type C-1, 11 KV complete all as specified and directed including dismantling old unserviceable one complete all as specified and directed. Make Eswari Electricals (Anand Fuses) or Equivalent

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

Service charges for carrying out servicing and overhauling of HT VCB/ LBS for RMU/RMG of :400A/630A/800A . by drawing out the draw-out module of the breaker, carrying out complete cleaning with clean cloth & cleaning agent, lubrication of the mechanism & greasing with high temperature molly grease, testing for smoother ON/OF operation, carrying out relay calibration of protection relay by secondary current injection methods to check trip time characteristic of relays, checking of healthiness of CTs & Pts. Checking of IR value of Interrupters, healthiness of Protection Tripping of Circuit breaker etc. Choking and servicing switchgear Interlocks and Safety Like Mechanical - 1. Positive Interlock, 2.Negative Interlock, 3. Spring Discharge Interlock, 4. Padlocks, 5. Key Interlocking 6. Safety Roll in Stop, 7. Safety Roll - out Stop,8. Rating Interference Interlock. Electrical - Interlock Switches) Checking of Electrical operations of the breaker for ON/OFF & Trip operation for Incomer and Outgoing including submission of service & test reports Note The servicing to be done by authorised service provider of manufacturer for RMU/RMG

All as per item No above but for LBS Amps :400A/630A/800A

All as per item No above but for VCBAmps:400A/630A/800A

Servicing of VCB 400 to 800 Ampere, 11 KV, 3 phase, 50 Hz, by disconnection and dismantling from 11KV Panels and replacing following items with new similar to existing make and specification and refxing of VCB in its original position ,reconnecting and commissioning all as per trade practice s directed complete for smooth function o

a)Repairing and setting of on and off tripping mechanism system together with adjustment of main shaft with replacement of sundry items such as Bush pin Washer Nuts & Bolts spring and wiring etc Complete Cleaning and washing will also be done.

b)Replacement & fitting of Bearings with new as per existing size

c)Replacement & fitting of Charging Rod with new

d)Replacement & fitting of Rocker Lever with new

e)Replacement & fitting of Charging Bush with new

f)Supply and fix Power pack 110AC/110V DC all as specified and as directed

g)Supply and fix Bus support Insulator 11KV, 10.4 mpa tensile Strength all as existing shape and size suitable for existing systems and specified and as directed

h)Supply and fix Tripping coil as per existing capacity and make

k)Supply and fixing of Spring charging handle assembly as per existing

l)Supply and fixing Raising and Lowering gear operated Handle

m)Supply and fixing Spout bushing as per existing size and model/make

Material and labour for servicing of four pole structure including checking/ tightening/making free for operating of GOD, insulators, lighting arrester, changing of nut/bolts if required including painting of RYB paint/tape at strip including preparation of old painted surfaces ,removing dust and other deposited materials by scraping from HT tubular pole of 11 Mtr long, painting of pole with one coat of black paint up to 1 Mtr from bottom and painting the rest of the pole including cross arms cable protection pipe clamps, bracket with one coat of aluminium paints complete all as specified and directed by Engr-in-Charge.

Material and labour for servicing of two pole structure including checking/ tightening/making free for operating of GOD, insulators, lighting arrester, changing of nut/bolts if required including painting of RYB paint/tape at strip including preparation of old painted surfaces ,removing dust and other deposited materials by scraping from HT tubular pole of 11 Mtr long, painting of pole with one coat of black paint up to 1 Mtr from bottom and painting the rest of the pole including cross arms cable protection pipe clamps, bracket with one coat of aluminium paints complete all as specified and directed by Engr-in-Charge.

Filtration of transformer oil of transformers step down 11 KV / 0-433 V indoor/outdoor type up to 500 KVA capacity installed at different sub stations/locations using filtration and heating equipment at site by re-circulating transformer oil heating, dehydration and improving di-electric strength of the oil to withstand 40 KV for one minute including testing of oil as specified and directed. NOTE : Transformer oil test kit shall be provided by the contractor at site for testing of oil.

Removing silica gel from the breather assembly of transformer of various transformer of various capacity up to 500 KVA installed at different sub stations and providing fresh Silica gel in the breather.

Supply and filling/topping up new transformer oil conforming to IS Specification for transformer up to 500 KVAcapacity of suitable insulation grade not less than 50KV, installed at various sub stations.

Servicing of Transformer 63 KVA to 500 KVA capacity by disconnection and dismantling from its position and replacing following items with new similar to existing make and specification and refxing of Transformer in its original position ,reconnecting and commissioning all as per trade practice s directed complete for smooth function

(a) Gasket of conservator tank of transformer 63 KVA to 500 KVA capacity.

(b) Terminal brass spindles, bush and check nuts with threads suitable for HT 11 KV primary terminals of transformer up to 500 KVA capacity.

(c) Terminal brass spindles, bush and check nuts with threads suitable for LT 0 - 433 Volt secondary terminals of transformer up to 500 KVA capacity.

Material and labour for replacement of breather assembly of size 50mm dia, min 250 mm long for transformer complete all as specified and directed

Material and labour for replacement of transformer temperature gauge dial type having temp range 0 to minimum 120 degree calicoes complete e all as specified and directed

Dismantling HT and LT (primary and secondary) terminal box covers and terminals, check / inspect the terminals, bushes, etc, arrest any leakage of oil by replacing gaskets tighten all terminal screws, bolts, nuts, etc, for proper contacts, refix covers, all as specified and directed for various types of transformers up to 300 KVA capacity.

All as per item but 301 KVA to 500 KVA

Material and labour for rewinding of primary coil 11 KV of transformer with super enameled suitable gauge copper winding wire for all the limps ,insulation sleeves , replacement of terminal, including Taking down transformer carefully from its position up to road not exceeding 50 Mtr by manually and transportation by vehicle (Recovery Van)/Manually to work shop and replacing with stand by transformer at the location all as specified and directed Capacity up to 500 KVA( Note : - Rate deemed including removing and re- installation of necessary HT/LT cable/ACSR/Earthling connection from transformer, filtration and Topping up Oil shall be measured and paid for separately )

Material and labour for rewinding of secondary coil 0.433 KV of with super enameled suitable gauge copper winding wire for all the limps ,insulation sleeves , replacement of terminal, including Taking down transformer carefully from its position up to road not exceeding 50 Mtr by manually and transportation by vehicle (Recovery Van)/Manually to work shop and replacing with stand by transformer at the location all as specified and directed Capacity up to 500 KVA ( Note : - Rate deemed including removing and re- installation of necessary HT/LT cable/ACSR/Earthling connection from transformer, filtration and Topping up Oil will be paid separately )

Earthling complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6.3 mm thick buried directly in ground earth pit not less than 2.25 m deep below normal ground level with the top edge of earth plate at a depth of not less than 1.5 m below normal ground level connected to GI earth strip 32 X6 mm dia by means of bolts, nuts, check nuts and washers made out of GI and GI earth strip projected by 15 mm bore light grade GI pipe and connected to main control board all as shown in electrical plate No 5 of SSR Part I including necessary earth work and excavation in any type of soil and PCC 1 : 2 : 4 type B - 1 in chamber and 40 mm thick RCC 1 : 2 : 4 type B - 1 cover slab with 8mm dia mild steel bars at 100 mm centre to centre both ways with 8 mm dia M S hooks complete all as specified and as directed.

Shifting the Transformer of capacity up to 250KVA with the help of Crane / Manpower , making necessary connection for both HT and LT sides to various E/M installation of GE STM complete all as specified and as directed by Engr-in - Charge.

Supply and fixing of CT as per existing and suitable for existing capacity of CT complete all as specified and as directed by Engr-in - Charge.

Supply and fixing of PT as per existing and suitable for existing capacity of PT complete all as specified and as directed by Engr-in - Charge.

Complete removal of creepers and vegetation from chain link fencing of average height of 6' 0"including all connected mild steel sections of 11 KV substation protection switch yard and main step down station ( 11 KV ) protection switch yard and applying two coats of aluminium paint complete all as specified and directed.

Supply and fix GI Earth strip 32 x 6 mm as in earth continuity conductor fixed to wall on battens or buried on ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing complete all as specified and directed.

Finding fault of HT Switch Gear (VCB/GOD)/HT XLPE UG Cable aluminium conductor armoured of cable size 95 Sqmm to 240 Sqmm by fault locater of latest Techngolies including taking out from trenches/poles/structure and relaying after fault rectification complete all as specified and directed. Note: Rate including hire of HT fault Locater and Earth Work. works should be completed with in 12 hrs, Jointing Kit will be measured and paid separately under relevant Item if required. Before Starting of any HT works contractor should ensure safety arrangements and proper shutdown of feeders/mains to avoide any unwanted incidents

Supply and install switch Air Break gang operated triple pole ,mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level complete with 9 insulators of rating up to 200 Amp 11000 volts including taking down complete all specified and directed .

Supply only rubber mat of size 2mtrx1mtrx19mm.11 kv grade.

EVEREST ENGINEERING WORKS