REPAIR/MAINT OF ELECTRIFICATION OF HT DISTRIBUTION SYSTEM AND SUB STATION EQUIPMENTS INCLUDING OF DG SETS AND CONNECTED WORKS UNDER GE CHENNAI

Amount

BOQ UPLOADED ON 02 May 2024

SCHEDULE "A" PART-I (EXT ELECTRIFICATION)

Excavation in trenches not exc 1.5m in width and not exc 1.5 M in depth and getting out in any type of soil.

Returning filling in including spreading, levelling, watering and well ramming in layers not exc 25cm

Removing excavated material / soil to a distance 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 directed by Engineer-in-Charge.

Supply and laying fine river sand cushioning spreading and levelling for cable in the trenches all as specified and directed (Punned thickness only shall be measured and paid)

Reinforced precast concrete cable cover, class HV, type 1 with peak, size 300 mm x 180 mm x 40 mm complete

XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts Earthed, grade cross sectional area 95 Sqmm 3 core complete

All as per Item No 08 above but 120 Sqmm 3 core complete

All as per Item No 08 above but fixed on walls by suitable clamps and jointing complete GI pipe light grade of 100 mm size

Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled 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, 25x20cm size

Out door type cable end termination joint fixed in repair heat shrinkable type for HT XLPE 11000 volt grade cable of size 3 core and connecting the cable with the load and testing including earth work complete all as specified and as directed for the following size of the cable. Make M-Seal/Birla 3M/Denson Note : Excavation, RFR with removal of surplus soil if any is deemed to be included in the rates quoted by the contractor

Cable 95 Sqmm 3 Core

Cable 120 Sqmm 3 Core

All as per Item No 12 above but Indoor type for the following sizes

Cable 95 Sqmm 3 Core

Cable 120 Sqmm 3 Core

Cable jointing kit for 11 KV grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 240 Sqmm to 400 Sqmm , Indoor/Outdoor type complete all as directed.

M&L for painting of indoor HT panel of any size with two coats of synthetic enamel paint of colour as approved by the GE after necessary preparation and fixing the HT panel door properly including welding work if necessary and miscellaneous items complete all as specified and directed by Engr-in-Charge Note :- (i) Rate quoted to be inclusive of writing the MES No, Name of equipment and Name of feeder etc. (ii) The photographic record of the Panel "before" and "After" will be maintained for each Panel.

Disconnecting power supply and carrying out Servicing and maintenance of HT VCB 11 KV 630 Amps capacity after taking out bottom trolley, checking of operating mechanism, latch assembly, spring mechanism, checking of electrical control wiring of VCB and checking for proper functioning of shunt trip coil, lubrication of all moving parts and checking /cleaning of alignment of moving contacts with fixed contact assembly for proper functioning of operation and re-assembling of bottom trolley of HT VCB to its original position and testing complete all as specified and as directed by Engr-in- charge Note :- (i) The work will be carried out through the authorised rep of the manufacturer only and the record will be properly maintained. (ii) Rate quoted to be inclusive of any spare part required for the repair wk, writing the MES No, Name of equipment and Name of feeder etc. (iii) The photographic record of the VCB "before" and "After" will be maintained.

Calibration of IDMT relays set of three through relay test kit including other required measuring equipment to the site by secondary injection method and testing for proper functioning/tripping systems of relays complete all as specified and as directed. Note : The rate quoted by the contractor is deemed to be included for quarterly checking of relays in VCB for its proper setting/functioning and tripping of VCB during over load/earth fault.

HT current transformer of capacity for suitable to the existing rating including testing commissioning of through primary injection method with suitable testing kit and also checking the control panel wiring including setting the CT range with relays setting for proper functioning/tripping and taking out old unserviceable CT complete all as specified and as directed.

Supply and fixing in replacement of big and small end bearing of HT 11 KV VCB trolley including replacement of complete locking mechanism with integral spring charging handle for manual spring charge and replacement of closing coil and tripping coil 24V DC including replacement of electro magnetic relay, coil rating 220 V, AC of existing sample of make of Crompton greaves/ABB/Schneider.

Supply and fixing in replacement resin encapsulated vacuum interrupter bottles of the existing manufacturers as per existing circuit breaker trolley of 11 KV. Make: ABB/Schneider/L&T/CG

Replacement of spring charge universal motor suitable for 11 KV, VCB, working on 230 volt of existing make i.e. CG/Schneider/ABB/L&T etc all as specified and directed.

Replacement of current transformer moulded in epoxy compound with dual ration capacity for suitable to the existing rating complete connection with copper wire including beading as per existing VCB 11 KV at site all as specified and directed by Engr-in charge.

Gang Operated device 11 KV Triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating up to 200 amps complete

11KV lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp complete and incl taking down the old items.

Horn gap fuse unit assembly triple pole outdoor type suitable for HT 11 KV up to 400 Amp complete

M&L alu Painting to two pole structure HT of 11 Mtr long incl fittings and fixtures and cross arms complete, fixed with poles with two coats of aluminium paint incl scrapping of rusts and preparation of surfaces etc., complete all as specified and as directed by Engr-in-Charge.

Synthetic Rubber insulated mats 2 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 sizes 2m x 1m. Complete

MS Chequered Plates 410 w ( Gde -E250 ) quality A , channels, square cut or notched (ordinary and counter sunk) forming holes, without any attachment complete all as specified and directed

Finding out the cable fault of any size of cable up to 11 KV underground cable (HT of any capacity of cable with the help of cable fault locator mounting on vehicle and with necessary disconnection of cable from two ends and making connection by jointing after repairs and having the following items with electrician at site to find fault of up to length of 10 KM cable complete all as specified and directed by Engr-in-Charge with help of the following accessories- (a) Surge Generator with accessories (b) Head Phone (c) Pin Point Set T-505 with accessories (d) Earthing cable with clamp (e) Cable fault Locator T-905 with accessories (f) TC-808 with accessories (g) Soldering Iron/wire/capacitor unit/capacitor connecting cables/ power cable/nose plier. Notes: Excavation for the cable fault shall be done by the contractor by his own arrangement.

Digital Voltmeter suitable for, 11 KV at site for the existing size after taking down the existing one all as specified and directed. Make: Schneider / L&T / Elmeasure

Replacement MD XL type 10 KVAR to 20 KVAR capacitor 440 volt, 3 Phase, voltage test between terminals 1.75 rated volt including taking out u/s all as directed by Engr-in -charge. Make- Neptune, SIMENS, L&T

Insulator, porcelain, vitreous 145 mm high and 255 mm dia ball and socket type, white, brown or green and two-in-series' assembly for tension with tension clamps for conductors, working pressure 11000 volts complete complete all as specified and directed by Engr-in charge

GLS type Bulb 500 watts 230 volt for heating for VCB to control moisture complete all as specified and directed

Taking down and re-fixing Machine pressed pre cast concrete interlocking paver block any shape and size including refixing after provn of 20 mm thickness sand complete all as specified and directed by Engr-in-Charge

Supply and lay sand cushioning spreading levelling for cable duct at sub station complete all as specified and directed

Online centrifuging (filtration / dehydration) of transformer oil including checking di-electric strength of oil before and after filtration for transformers with suitable machine having filtration, heating and pumping facility to improve the dielectric strength/ insulation value of oil. Notes :- (i) Di-electric strength of oil after filtration/ dehydration shall not be less than 60 KV/min. (ii) The contactor shall take shut down orders in writing from Engineer-in-charge before commencement of the work. (iii) The contractor shall ensure no wastage of transformer oil. (iv) The di-electric strength of oil shall be tested before & after filtration and test results shall be submitted to Engineer-in-Charge.

Supply and filling new transformer oil for topping up the transformers duly filtered with filtration plant having dielectric strength not less than 60 KV complete all as specified and as directed. [Make : Poweroil/ Electrol/ Servo]. Note :- (a) The transformer oil shall be type EHV confirming to IS - 335/1983. (b) Mineral oil grade shall be used. (c) The IR value of transformer oil shall not be less than 60KV/min. (d) The unit rate shall be deemed to include the cost of filtration to achieve desired di-electric strength.

Maintenance/servicing of existing transformer of cap up to 400 KVA including following work/operations all as directed and to the entre satisfaction of Engr-in-Charge :- (a) Opening of top plate after disconnection from HT/LT side. (b) Decaning of old transformer oil & keeping it for reuse after centrifusing to required dielectric strength as per IS schedules (c) Checking maintenance of all internal parts as HT/LT coils of all places, HT bushing, internal electrical connections, tap changing gear box. (d) Internal cleaning of tank by taking off complete coil/core of transformer outside and also cleaning of cooling tubes and make it free from sludge deposition. (e) Refilling of oil after repairs / maintenance work. (f) Change of cork Gasket of top cover. (g) Taking meggar value by applying not less than 5000 Volts meggar on HT side and not more than LT side from 500 Volts meggar & recording results. (h) Change of silica jel and glass of oil level indicator of cover both.

Dismantling and removing of defective transformer removing to workshop for repair, opening up and taking out coil, core and core assembly for estimation of repair and damaged parts cleaning/washing of tanks and removing the dust from all parts including cores, tanks, cooling tubes, removal of damaged parts making connection and assembling complete in all respects after repair/ replacement of coils, gasket, sheet, nuts and bolts, refilling of transformer oil, installation and testing on full load for testing for 11 KV capacity from 100 to 400 KVA complete all as specified and directed by the Engr-in-Charge. Items No 41 & 42 Note: 1. Spare parts and winding coils as mentioned under respective items of schedule shall be measured and paid for separately as supply only. These shall be identical to those specified by original manufacturer. 2. The Maint /service work to be carriod out in factory premises, the cost quoted deemed to included fiftings, transporting of Transformer from site to factory and back including reinstalling testing complete.

Rewinding the LT/HT side (primary winding/Secondary windings) of the transformer with copper winding (wire/strip )of suitable gauge or to match the existing including refixing, connecting, testing and commissioning the transformer complete.

Supply and fix in repair HT bushing rod complete with insulator and packing suitable for out door/Indoor type 100 KVA to 400 KVA transformers confirming to IS-334 complete with nut bolts brass studs and gasket of synthetic rubber bonded cork sheet all as specified and directed by Engr-in-Charge.

Supply and fix in repair LT bushing complete with insulator and packing suitable 1100 volt grade complete with nut bolts, brass studs, insulator and gasket etc suitable for 100 KVA to 400 KVA out door/Indoor transformer. Notes for above item No 1. Rates quoted by the contractor shall be deem to include for opening of top plate of transformer/decanning of oil from transformer up the level as per requirement and assemble the same after replacement of bushing rod. 2. Bushing rod shall be replaced at site. transformer will not be allowed to send to workshop at any cost and all bushing replacement work shall be executed at site only.

Supply and fix air breather complete with silica gel suitable for out door type step down power transformer up to 100 KVA to 400 KVA all as specified and directed by EIC.

Material and labour for spray painting of distribution transformer with two coats of synthetic enamel paint of smoke grey colour after neatly cleaning and preparing the surface for spray painting the transformer of the following capacity including writing SM / MES No (5 cm height) with white enamel paint of cap 100 KVA to 400 KVA complete all as specified and as directed.

Supply and fill in replacement of silica gel in transformer complete all as directed

Supply and fix in replacement of Temp gauge in transformer breather complete all as directed

Servicing for DG set of capacity 160 KVA of MES/SM No : 013/6051-DG/17 installed including Jobs to ensure its satisfactory performance and consumable items repair/replacement and the following items free for fixing only Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chemical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above butf DG set of capacity 100 KVA MES/SM No 013-6005-04-06 installed including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chemical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above but DG sets of capacity 62.5VA of MES/SM 108762 and 40 KVA of MES/SM No LBS3K17/19567-H, 013/6048-DG/17, SR/02/8-9, 013/6004-DG/06 installed including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chamical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above but DG sets of capacity 50 KVA of MES/SM 013/6003-DG/06 installed including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chamical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above but DG set of capacity 30 KVA MES/SM No 192668 iinstalled including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chamical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above but DG sets of capacity 15 KVA MES/SM No B0307351 & G11K458318 and 25 KVA of MES/SM No 1323892 & 013/6050-DG/17installed including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chamical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

As per items No above but DG set of capacity 7.5 KVA MES/SM No 155024 movable trolly type DG Set installed including Jobs to ensure its satisfactory performance all as directed by the Engineer-in-Charge. Note :- Replacement of suitable grade engine oil S&F for Oil filter, fuel filter and Air filter S&F for water separator Radiator cleaning with chamical S&F for change of fule pipe S&F for change of fan belt S&F for change of hose pipe with clamp

Supply only engine oil Grade 20 W 40

Supply & fixing Battery terminal leads of 3 mtr long to starter of Diesel engine provided with brass connector on one end and cable lug on other end. Make : ISI mark.

Scraping, removal of rust and complete removal of existing painting, cleaning and applying spray painting with two coats of synthetic enamel paint after attending welding work to corroded portion over a coat of red oxide primer to the following capacity of DG Sets with apple green tint for engine, smoke grey tint for alternator, black for foundation/bases frame and red for all guards including writing of SM/MES Number on Engine and Alternator all as specified and directed by Engineer-in-Charge.

DG set of Capacity 160 KVA

DG set of Capacity 100 KVA

DG set of Capacity 50 KVA

DG set of Capacity 62.5 KVA

DG set of Capacity 40 KVA

DG set of Capacity 30 KVA

DG set of Capacity 20 KVA

DG set of Capacity 15 KVA

DG set of Capacity 7.5 KVA

Winding of armature winding and field winding with super enamelled copper wire of appropriate gauge including varnishing of insulating material and heating up, testing etc, complete for DG set of capacity 40 to 62.5 KVA including taking out the old burnt windings. Installed at SFA Nandanam MES/SM No 108762 and STP inside Fort MES/SM No 013-6048-DG/06.

M&L for repair /replacement for 12 Volts 92 AH includig cell and plate change for as per requirement and terminal and distal water complete all as specified and directed

M&L for repair /replacement for 12 Volts 180 AH includig cell and plate change for as per requirement and terminal and distal water complete all as specified and directed

Supply & fixing Ammeter 0 to 60 Amps Make : L & T

Supply & fixing Voltmeter 0 to 500 V Make : L & T

Supply & fixing 1.5sqmm PVC insulated multistranded copper conductor control cable. Make : Havells/Finolex

S&F for GI earthing strip 25x4 mm with nut and bolts comoplete including taking down old one all as specified and directed by Engr- in- Charge

S&F of GI Strip ISI marked of size 32 x6 mm complete with nuts, bolts and washers,buried in ground including excavation complete with taking down old one all as specified and directed by Engr-in-Charge.

Earthing complete with galvanised steel earth plate electrode of size 60cm x 60cm x 6 mm thick burried directly in ground( earth pit not less than 2.25 m deep below the normal groungnd level) with top edgee of the plate not less than 1.5m below normal GL connected to GI earth strip of size 32x6 mm by means of bolts, nuts, check nuts washers of GI or steel all as shown in electrical plate No-5 of SSR Part I connected to machanery/equipments installed power house/sub station all as specified including testing on completion. Note (i) the unit rate shall also include for excavation earth work in any type of soil PCC (1:3:6) type C1 pit RCC 1:2:4 type B-1 cover reinforced with 8 mm dia CTD bars @ 150mm C/C both ways funnel with 15mm bore GI watering pipe 20mm dia bore GI protection pipe wire mesh and copper lugs complete in addition to item No 1(a) to (e) of preamble ( Notes) Under sub heading earthing specified in SI page NO-389 of SSR Part-II 2020. (ii) Marking the earth chamber with date of test, name of machine and earth value.

Surface dressing not exceeding 15cm deep and getting out in soft / loose soil complete all as specified and directed.

Painting of compact sub station including VCB , Transformer , RMU and LT Panel of any size with epoxy powder coated grey colour paints, wheather proof after throughly scrapping / cleaning the rusted portion and fixing the HT Panel door properly including welding work if necessary and miscelleneous items complete all as specified and directed by Engr in Charge. Note :- Rate quoted is deemed to be inclusive of writing MES No, Equipment Nomenclature and Name of feeder complete with STENCIL CUT and "NEW TIMES ROMAN" FONT)

Material and labour for taking out bottom trolly of HT LBS for 11 KV capacity after disconnecting power supply and carrying out servicing and maintenance of operating mechanism, latch assembly spring mechanism, checking of electrical control wiring of LBS and checking for proper functioning of shunt trip coil, lubricating of all moving parts and checking /cleaning of alignment of moving contacts with fixed contact assembly for proper functioning of operation. Reassembling of bottom trolly of HT LBS fixed in its original position and testing for smooth functioning complete all as specified and as directed by Engr-in- charge

G.L.THIRUMALAI NAIDU AND COMPANY

PSK Enterprises

muthu constructions