REPAIR / MAINTENANCEOF HT E/M INSTALLATIONS,TRANSFORMERS AND ALLIED EXTERNAL ELECTRICFICATION WORKS AT VARIOUS LOCATIONS UNDER GE STM CHENNAI

Amount

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

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

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

M&L for fine seived excavated dry soil laid to the required width of trench at botom and top of cable as cushioning to cable complete all as specified . Note :- Thickness shall be measured after punning

Supply and lay 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

S&F Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size:-

For 95 Sqmm

For 120 Sqmm

For 185 Sqmm

S&F cable joint indoor 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 following sizes :-

For 95 Sqmm

For 120 Sqmm

For 185 Sqmm

For 240 Sqmm

S&F cable joint 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 following sizes :-

For 95 Sqmm

For 120 Sqmm

For 185 Sqmm

For 240 Sqmm

Supply and laying HT UG Cable XLPE insulated with multistranded aluminium conductor armoured with galvanised steel wire / taps 11000 volts grade conforming to IS specifications of following sizes in trenches / poles / wall /through pipes etc complete all as specified and directed :-

HT UG Cable 3 core 95 sqmm .

HT UG Cable 3 core 120 sqmm .

HT UG Cable 3 core 185 sqmm .

S&F in repairs 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 complete all specified and directed .

S&F in repairs 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 the same with PCC 1:2:4 type B1 using 20 mm graded crushed stone aggregate complete all as specified and as directed. Make : TATA/JINDAL/Prakash Surya

S&F in repairs tubes light grade of size 100 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 the same with PCC 1:2:4 type B1 using 20 mm graded crushed stone aggregate complete all as specified and as directed. Make : TATA/JINDAL/Prakash Surya

S&F in repairs 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 complete all as specified and directed

S&F in repairs 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 complete all as specified and directed

S&F in repairs loop type porcelain vitreous white brown, or green insulator with over all dimension 90X140 mm clearance of hole 25.5 mm complete all specified and directed .

M&L for ACSR conductor of any size for HT / LT over head line fixed with jumpers on PCC/RCC/Steel pole including binding wires line connecting up etc of any size including taking down old unserviceable ACSR complete all specified and directed .

S&F in repairs mild steel 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 and directed and inclusive of applying one primer coat ,one under coat and one finishing coat of paint complete all as specified

M&L for carrying out complete servicing of GOD including lubrication of the mechanism and greasing with petroleum Gel complete all as specified and directed Note: Minimum spares /lubricants and tools required for the job shall deemed to be included in the quoted rates.

S&F Tinned copper (TC) HT fuse wire 60 Amps complete all as specified and as directed

S&F Tinned copper (TC) HT fuse wire 40 Amps complete all as specified and as directed

S&F Tinned copper (TC) HT fuse wire 20 Amps complete all as specified and as directed

M&L for painting the transformer completely of capacity 100 KVA to 500 KVA with one coat of synthetic enamelled paint of existing tint including writing SM/MES No complete all as specified and as directed.

S&F in repairs lighting arrester expulsion type complete with all fitting transmission class ,discharge capacity 65 Kilo Amp 11000 Volts rating complete all as specified and directed.

S&F in repairs expulsion type drop out fuse with all accessories and contact insulator fixed on HT pole rating above 25 Amps and up to 50 Amps suitable for 11KV 3 pole with and including 2 Nos of insulator per pole complete all as specified and directed.

S&F in repairs expulsion type drop out fuse with all accessories and contact insulator fixed on HT pole rating above 50 Amps and up to 100 Amps suitable for 11KV 3 pole with and including 2 Nos of insulator per pole complete all as specified and directed.

S&F in repairs HT Load Break Switch fuse rating of 40 Amps Type C-1, 11 KV complete all as specified and directed Make :Eswari Electricals (Anand Fuses) or other equivalent as approved by GE

S&F in repairs HT Load Break Switch fuse rating of 50 Amps Type C-1, 11 KV complete all as specified and directed Make :Eswari Electricals (Anand Fuses) or other equivalent as approved by GE

S&F in repairs HT Load Break Switch fuse rating of 63 Amps Type C-1, 11 KV complete all as specified and directed Make :Eswari Electricals (Anand Fuses) or other equivalent as approved by GE

Suply and lay synthetic rubber insulated mat 2.5 mm thick of size 2 m x 1m suitable for elctrical shock safety for voltage upto 3.3 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) complete all as specified and directed .Make :Jyoti/Denson or other equivalent as approved by GE

M&L for carrying out servicing and overhauling of following capacities HT VCB/ LBS 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 likes Mechanical :- (a) Positive Interlock, (b)Negative Interlock,(c) Spring Discharge Interlock, (d) Padlocks, (e) Key Interlocking (f) Safety Roll in Stop, (g) Safety Roll - out Stop,(h) 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 complete all as specified and directed by Engineer-in-Chrage.Note: The servicing shall be done by authorised service provider of Manufacturer.

RMU/RMG Amps:400A/630A/800A

LBS Amps:400A/630A/800A

VCB Amps:400A/630A/800A

M&L for 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 one similar to existing make and specification and refxing of VCB in its original position ,reconnecting and commissioning all as per trade practice for smooth functioning of VCB/LBS complete all as specified and as directed by Engineer-in-Chrage

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 including necessary cleaning and washing complete

Supply and replacement & fitting of Bearings as per existing size

Supply and replacement & fitting of Charging Rod

Supply and replacement & fitting of Rocker Lever

Supply and replacement & fitting of Charging Bush

Supply and fix Power pack 110AC/110V DC all as specified and as directed Make: Sun Electric or other equivalent as approved by GE

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

Supply and fix Tripping coil as per existing capacity and make

Supply and fixing of Spring charging handle assembly as per existing

Supply and fixing Raising and Lowering gear operated Handle

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

M&L 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 metre long, painting of pole with one coat of black paint upto 1 metre from bottom and painting the rest of the pole including cross arms cable protection pipe clamps, bracket with one coat of aluminium paint complete all as specified and directed by Engineer-in-Charge.

M&L 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 metre long, painting of pole with one coat of black paint upto 1 metre from bottom and painting the rest of the pole including cross arms cable protection pipe clamps, bracket with one coat of aluminium paint complete all as specified and directed by Engineer-in-Charge.

M&L for filtration of transformer oil of transformers step down 11 KV / 0-433 V indoor/outdoor type upto 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.

M&L for 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 assembly all as specified and directed.

Supply and filling / topping up new transformer oil conforming to IS Specification for transformer upto 500 KVA capacity of suitable insulation grade not less than 50KV, installed at various sub stations complete all as specified.

Dismantling and removing the following unserviceable parts/items from the transformer of various capacity including supply and fixing new parts / items

Gasket of conservator tank of transformer 63 KVA to 500 KVA capacity.

Terminal brass spindles, bush and check nuts with threads suitable for HT 11 KV primary terminals of transformer upto 500 KVA capacity.

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

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

M&L for replacement of transformer temperature gauge dial type having temp range 0 to minimum 120 degree caliceus complete e all as specified and directed

M&L for 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 for various types of transformers upto 300 KVA capacity complete all as specified and directed.

All as per item No 40 above but for 300 KVA to 500 KVA

M&L for rewinding of primary coil/secondary coil 11 KV/0.433 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 metre 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 of size 500KVA Capacity. Note : (a) Quoted rate shall deemed to be inclusive for removing and re- installation of necessary HT/LT cable/ACSR/Earthling connection from transformer.(b) Filtration and Topping up Oil shall be measured and paid separately under relevant item

M&L for earthing complete with galvanised steel earth plate electrode of size 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 of size 32 mm x 6 mm thick 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 B1 in chamber and 40 mm thick RCC 1:2:4 type B1 cover slab with 6 mm dia mild steel bars at 100 mm centre to centre both ways with 6 mm dia M S hooks complete all as specified and directed including testing on completion .

M&L for shifting the Transformer of capacity upto 250 KVA with the help of Crane / Manpower , making necessary connection for both HT and LT sides complete all as specified and as directed by Engineer-in - Charge.

S&F in replacement CT as per existing and suitable for existing capacity complete all as specified and as directed by Engineer-in - Charge.

S&F in replacement PT as per existing and suitable for existing capacity complete all as specified and as directed by Engineer-in - Charge.

M&L for complete removal of creepers and vegetation from chain link fencing 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 spread graded stone metal aggregate of size 40 mm in transformer yard at various locations complete all as directed by Engineer-in-Charge.

M&L for Excavating in post holes (or similar holes) each not exceeding 0.5 cum getting out in soft / loose soil including returning, filling in and ramming earth or broken rubble mixed with earth around, in layers not exceeding 25 cm,watering and removing surplus soil to a distance n exc 50m and making good surface complete all as specified and as directed

M&L for Plain cement concrete 1:2:4 type B2 using 40 mm graded aggregate in foundation and mass concreate complete all as specified and as directed.

S&F Mild steel angle iron posts and struts in fencing including cutting tops to shape as directed, drilling holes, notching for wire, etc.; flat iron fillets (for securing wire mesh etc.) including all necessary drilling, bolting or riveting, etc., and similar work conforming to Fe-290 Gde E-165

Fixing only chain link fencing including line wires, any mesh, size and any type of standards, rails, straining bolts, etc. including provission of binding wire complete all as specified and as directed

Supply only chain link MS galvanisd fencing, any size or type not exceeding 4 Kg/Sqm complete all as specified and as directed

M&L for Mild steel bars 10mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9mm dia or securing with clips complete.

M&L for Mild steel screw bolts (machine made) with hexagon or square heads at one end and screwed the othr , or screwed both ends, each screwed and to be fitted with washers and one hexagonal or square nut, not exc.5 cm long dia of shank 5 to 10mm complete all as directed and specified

S&F GI earth strip of size 32mm x 6 mm thick 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.

M&L for finding fault of HT Switch Gear (VCB/GOD) / HT XLPE UG Cable aluminium conductor armoured cable of size 95 Sqmm to 240 Sqmm by using fault locater equipment including taking out from trenches/poles/structure and relaying after fault rectification complete all as specified and directed. Note: (a) Quoted rate shall be inclusive for hiring of HT fault locater equipment and earth Work. (b) Job/work should be completed with in 12 hours from the time of receipt of complaint (c) Jointing Kit shall be measured and paid separately under relevant Item if required. (d) Necessary safety arrangements and proper shut down of feeder / Main supply etc should be carried out before starting of any HT works to avoide any unwanted incidents at site.

LAKSHMI ELECTRICAL ENTERPRISES (BID ID -3210977)

G.L.THIRUMALAI NAIDU AND COMPANY (BID ID -3210035)