Renovation of Building Opposite to integrated Cargo Complex and Building near Gate No.2 for CISF Accommodation Electrical works. SH Supply, Replacement of Power Supply System Installations and associated Electrical Works.

Amount

SH-I : SUPPLY of Sub Station Equipments

Supply of indoor type floor mounted metal clad, 11KV Switch Board VCB panel with 02 Nos. VCBS, totally enclosed & fully interlocked, truck mounting, horizontal drawout, horizontal isolation type vaccum breaker as per IS13118/IEC 62271-1 (2007) & 200 (2003), as amended up to date and as per the Technical specifications, having capacities as mentioned below, free standing extensible on both sides, single break, suitable for indoor operation, motorised charged and auto/ manually closing breaker suitable for use on 11 KV, 3 Phase, 50Hz A.C. supply with short circuit fault level of 350 MVA for 3Sec complete with self contained, Copper bus bar of size not less than 60x10mm, Internal Arc Test for AFLR 18.4kA for 1Sec, rack in and rack out mechanism, air insulated but encapsulated copper bus bars of capacity meeting fault level current, breaker featured with mechanical ON/ OFF indicator with hand trip device, and all accessories such as shunt trip coil, motorised and manually operated spring assisted closing mechanism, emergency trip push button, castle lock, interconnections, audio visual buzzer connecting all alarms and trip commands, space heaters, earth bus bar 50x60mm etc., and equipped with following switchgears and accessories connections suitable for cable upto 3C x 240 sqmm XLPE cable of 11KV grade (cable entry from bottom) to terminate with heat shrinkable termination kit etc. complete as required.

1. a) Incoming-1 No. of 630Amp VCB

b) 1 No. - 11 KV/110 Volts drawout type resin cast PT Class 1.0 accuracy and 100 VA burden with 1 No Digital type voltmeter, Digital Meter of Schnider Make, Model EM 6400NG with RS port (or) Equivalent for each incomer, LED Type Breaker ON/ OFF/ TRIP/ Service position/test position/Trip ckt healthy/spring charge indication Lamps, LED type Phase Indication Lamps and protection fuses/MCB for HT metering up to 12 KV on incomer.

c) 1 No. - Ammeter digital type of Class 1

d) 1 No. Microprocessor based numerical relay (Make: Schnider, Model: Model: REL15003D or equivalent) with O/L, E/F and S/C protection and 1 No. of Master trip relays.

e)1 No - set of dual core dual ratio 3 CTs 100/ 50/ 5/ 5A of 10 VA burden and accuracy class - 1 for metering and class 5P10 for protection.

2. a) Outgoing for Transformer - 1 No. of 630Amp VCB

b) 1 No. - 1 No Digital type voltmeter, 1No. Digital Meter of Schnider Make, Model EM 6400NG with RS port (or) Equivalent for each incomer, LED Type Breaker ON/ OFF/ TRIP/ Service position/test position/Trip ckt healthy/spring charge indication Lamps, LED type Phase Indication Lamps and protection fuses/MCB for HT metering up to 12 KV on incomer.

c) 1 No. - Ammeter digital type of Class 1

d) 1 No. Microprocessor based numerical relay (Make: Schnider, Model: Model: REL15003D or equivalent) with O/L, E/F and S/C protection and 1 No. of Master trip relays.

e) 1 No. - set of Auxilary relays for Oil temparature, winding tempature and Bucholz alarm, trip.

f) 1 No. - Set of dual core dual ratio 3 CTs 100/ 50/ 5/ 5 A of 15VA burden and accuracy Class-1 for metering and class 5P10 for protection.

All as above 1.01 to 1.12

TRANSFORMER

Supply of Cast Resin Dry Type 500 KVA, 11/0.433KV, 3 Phase, 50Hz, DYn 11 vector group, copper wound class F insulation associated with winding temperature indicator/controller acctuated by means of resistance temperature detector embedded in LV windings indoor type Transformer with less than 5% impedance,the transformer shall be provided with +5.0% to -7.5% in steps of 2.5% each offload tap changer with rotary links on HT side, having cable end boxes on HV side suitable for 3C x 185 sq.mm. XLPE cable of 11 kV grade and 3R 3.5 Core X 300 Sq.mm XLPE Cable of 1.1 KV Grade arrangement of LV side with neutral brought out separatly, earthing terminals, lifting lugs, supplying and grouting of suitable MS channels with all accessories for mounting arrangement and confirming to IS 2026, IS 11171: 1985 with up-to-date amendment and confirming to transformers losses as per ECBC 2017 with up to date amendment as per technical specification etc. complete as required.

Fabrication and supply of cubical type LT Panel - type tested design as per IEC 61439-1 & 2 suitable for 415 V, 3 Phase, 4 wire 50 Hz AC supply, made out of 2 mm thick CRCA sheet steel for load bearing portions, frame work, 2.0mm thick with doors, covers, portitions, non-load bearing portions, 3 mm thick for gland plates, dust tight, vermin proof, totally enclosed, the degree of protection of enclosures system shall be IP42 in accordance with IEC 60529, Form 4b compartmentalised design, floor mounting, free standing, extensible on both sides i/c cleaning & finishing complete with 7 tank process for powder coating in approved shade, having 800 Amps capacity FP Aluminium bus bars of high conductivity, DMC/SMC bus bar supports with short circuit withstand capacity of 50 KA for 1Sec., bottom base channel of MS section not less than 100 mm x50 mm x 5 mm thick, fabrication shall be done in transportable sections, entire panel shall have a common copper earth bar of size 50mm x 5 mm at the rear with 2 nos earth stud, solid connections from main bus bars to switch gears with required size of Aluminium bus bars and control wiring with 1.5 Sq.mm. FRLSH PVC insulated copper conductor cable except CT secondary circuit for which control wiring shall be 2.5 Sq.mm. FRLSH PVC insulated copper conductor cable, cable alleys, cable gland plates and suitable for indoor operation, complete with all accessories, interconnection, earthing, alignment with the bus ducts etc., as required and comprising of following switch gears:

Incoming:

One No. 630A,50 KA, Four Pole MCCB (Ics=Icu) as EB Supply Incomer with inbuilt O/L and S/C fault Protection with microprocessor based release and provided with Three nos. Cast resin of suitable rating CTs with digital Multifunction Meter having RS 485 port (EM6400NG of Schneider make or equivalent), ON/OFF/TRIP and Phase indication LED indication lamp along with control MCBs as per Standard practice etc. as required.

One No. 630A,50 KA, Four Pole MCCB (Ics=Icu) as DG Supply Incomer with inbuilt O/L and S/C fault Protection with microprocessor based release and provided with Three nos. Cast resin of suitable rating CTs with digital Multifunction Meter having RS 485 port (EM6400NG of Schneider make or equivalent), ON/OFF/TRIP and Phase indication LED indication lamp along with control MCBs as per Standard practice etc. as required.

Two incomers shall be Electrically and Mechanically interlocked so that only One incomer can be switched on at a time. All accessories such as fuses, auxillary contactors, auxillary switches, etc. as required.

Outgoing:-

Two Nos. 250 A,36 KA, Four Pole MCCB (Ics=Icu) with inbuilt O/L and S/C fault Protection with microprocessor based release and each MCCb provided with one set of Cast resin of suitable rating CTs with digital Multifunction Meter having RS 485 port (EM6459 of Schneider make or equivalent), ON/OFF/TRIP LED indication lamp along with control MCBs as per Standard practice etc. as required.

Two Nos. 100 A,36 KA, Four Pole MCCB (Ics=Icu) with inbuilt O/L and S/C fault Protection with Thermal magnetic release and each MCCB provided with One set of Cast resin of suitable rating CTs with digital Multifunction Meter having RS 485 port (EM6459 of Schneider make or equivalent), ON/OFF/TRIP LED indication lamp along with control MCBs as per Standard practice etc. as required.

Four Nos. 63A,36 KA, Four Pole MCCB (Ics=Icu) with inbuilt O/L and S/C fault Protection with with Thermal magnetic release and each MCCB provided with One set of Cast resin of suitable rating CTs with digital Multifunction Meter having RS 485 port (EM6459 of Schneider make or equivalent), ON/OFF/TRIP LED indication lamp along with control MCBs as per Standard practice etc. as required.

Busbar:

One Set of FP Aluminium Bus Bars of minimum of 800 A Capacity with heat shrinkable coloured sleeves and i/c DMC/SMC bus bar cross section supports & their spacing etc. for meeting fault level of 50 KA for 1 Sec with adequate size aluminium busbar for interconnection of incomer and outgoing switchgears and 50x5mm coper earth strip etc, as required. All accessories such as fuses, auxillary contactors, auxillary switches, etc. as required.

One No. of Three Phase Surge Protection Device (SPD) Type I + II, having 100KA 10/350 micro seconds neutral to earth, 50 KA 10/350 micro sec line to neutral, with limiting voltage less than 1.5 KV shall be connected to the main busbar & shall be of modular type.

All as above 3.01 to 3.11.

Incoming

Outgoings:

i) Each Active Harmonic Filter Feeder Consists of: (1No) a) 100A,3P,36KA,MCCB Thermal Magnetic with Spreader links -1No b) 75A AHF Module - 1No. C) HMI i.e. Hybrid PQ controller shall be used to integrate the active and passive sections seamlessly.

Busbar:

One Set of Aluminium Bus Bars of minimum of 400 A Capacity with heat shrinkable coloured sleeves and i/c DMC/SMC bus bar cross section, size supports & their spacing etc. for meeting fault level of 36 KA for 1 Sec and 25x5mm Copper earth strip etc. as required.

All accessories such as auxiliary contactors, auxiliary switches, push buttons MCBs, rotary handles, phase seperators etc., as required.

All as above 4.01 to 4.08.

Supply of nominal 2.5 mm thick (Width 1 Mtr) PVC synthetic, electric insulated mats conforming to IS 15652-2006 having Dielectric strength of 45 KV, no adverse effect of mineral oil, high insulation resistance (Minimum 1,00,000 M Ω on wet condition with 5 KV meggar) with yellow coloured bordered reflective Adhesive sticker of width 50mm at borders etc., as required.

Supply of nominal 2.0 mm thick (Width 1 Mtr) PVC synthetic, electric insulated mats conforming to IS 15652-2006 having Dielectric strength of 30 KV, no adverse effect of mineral oil, high insulation resistance (Minimum 1,00,000 M Ω on wet condition with 5 KV meggar) with yellow coloured bordered reflective Adhesive sticker of width 50mm at borders etc., as required.

Supply of compact circular stranded Al conductor provided with conductor screening of semi-conducting compound XLPE insulated provided with insulation screening over individual cores, consisting of extruded semi-conducting compound followed by lapped semi-conducting copper tapes, cores laid together with suitable filters, in the interscripes covered with inner sheath by extrusion, galvanized flat steel strip armoured and overall PVC sheathed cable, suitable for 11 KV (E) System conforming to IS 7098 (Part-II) 1985 as amended upto date and of following Size as required.

3 X 185 Sq.mm

SH-II: Installation, Testing, commissioning of Sub-Station Equipments.

Installation, Testing and Commissioning of 11KV HT VCB Panel mentioned at SH-I/ 1 including provision of MS supporting "C" channel of size 100 x 50 x 6 mm thick including dismantling of existing HT Panel at Power House to create space for installation of new HT Panel, supply, laying and termination of 1.5 sqmm multi core copper conductor PVC insulated and PVC sheathed armoured control cables for sensing purpose between relays of HT VCB panel and transformer (For WTI and seperate cables for A.C, D.C control supply), for A.C source of VCB Panel and for D.C source of Battery charger including shifting of dismantled HT panel to AAI store etc. complete all as required.

Installation, Testing and Commissioning of 11 KV/ 0.433KV, 500 KVA, 3P, Dry type Transformer mentioned at SH-I / SOQ Item no. 2 i/c making suitable RCC platform upto 300 mm height with supporting channel, wheel stoppers as per specifications etc. complete as required.

Installation, Testing and Commissioning of 415V, 630 Amps Bus bar rating MV LT Panel mentioned at SH-I /3 including dismantling of existing LT Panel in power house at Airindia building, provision of supporting "C" channel size 100 x 50 x 6 mm thick including shifting of dismantled LT panel to AAI store etc. complete as required.

Installation, Testing and Commissioning of 50 KVAR IGBT based Hybrid panel mentioned at SH-I /4 including provision of supporting "C" channel size 100 x 50 x 6 mm thick, laying of 1.5 sqmm multi strand copper conductor PVC insulated and PVC sheathed armoured control cable for sensing purpose between Current Transformers at LT panel and Hybrid APFC panel and all connections and interconnections & including shifting of dismantled APFC panel to AAI store etc. complete as required.

Fixing of nominal 2.5 mm or 2.0 mm (Width 1 Mtr) thick PVC synthetic, electric insulated mats conforming to IS 15652-2006 along with suitable adhensive/ chemibond on the Surface/Chequered plates / Concrete Covers over Cable Trench, sealing of all joints and edges, providing reflective tape of 50mm all around the mat etc., complete as required.

SITC of 15 Nos. of 2 Volt, 100 AH Exide Batteries [Totalling to 30V] of Model "PLANTE (YKP9)" or Equivalent with Initial Charging including providing and fixing suitable size wooden Stand as per OEM's recommendation or E-I-C direction for positioning of Batteries etc. complete as required.

SH-III : LAYING OF CABLES, EARTHING AND ASSOSIATED WORKS

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade of following size in the existing RCC/ HUME/ METAL pipe as required.

Above 120 sq. mm and upto 400 sq. mm

Laying of one number PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade of following size in the existing masonry open duct as required.

Above 120 sq. mm and upto 400 sq. mm

Laying and fixing of one number PVC insulated and PVC sheathed/ XLPE power cable of 11 KV grade of following size on wall surface wall as required.

Above 120 sq. mm and upto 400 sq. mm (clamped with 40x3mm MS flat clamp)

Laying and fixing of one number PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade of following size on cable tray as required.

Above 120 sq. mm and upto 400 sq. mm (clamped with 40x3mm MS flat clamp)

Retrievel of one number PVC/XLPE insulated and PVC sheathed power cable of 11KV/1.1KV grade of size upto 400 Sqmm from the existing RCC/ HUME/ STONEWARE/ METAL/ GI PIPES/ Duct/ TRAY/ TERRACE etc., as required.

Supplying and laying of "B" Class G.I pipe of 150 mm dia, i/c excavation of bituminous/ concrete road/ pavement, excavation of trench of required width for laying of G.I pipe, depth upto 800 mm, providing and laying cement concrete of 1:4:8 ratio at bottom (100 mm) of pipe, refillingthe trench with soil, ramming, watering, consolidation and making the surface to original finish with PCC of 1:2:4 ratio on top (200 mm) and disposal of left out soil away from Airport premises etc. complete as required.

Supplying and laying of "B" Class G.I pipe of 150 mm dia including excavation of Soil depth upto 750 mm and refilling the trench with excavated Soil after laying Pipe, ramming, watering, consolidation and making good the surface to original finish and disposal of left out excavated soil away from Airport premises etc. complete as required.

Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 Core, XLPE Aluminium Conductor cable of 11 KV grade as required.

Supplying and making Outdoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 Core, XLPE Aluminium Conductor cable of 11 KV grade as required.

Supplying and making indoor end termination with brass double compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required.

3½ x 300 Sq.mm

Supply and Fixing of 10 mm thick SMC chequered plates including provision of 50 x 50 x 5mm thick MS angle in all side and diagonal of SMC plate for strengthening by Aluminium revtting and MS lifting hook etc. complete as required.

Supply, fabrication, Transportation and installation of the MS channel/ angle/ flat for cable tray/ support including cutting, welding, drilling, fixing, grinding, applying redoxide primer of two coats and two coat of enamel paint of Black colour etc. complete as required. and as per the instructions of Engineer-In-Charge.

Providing of earth pits using Copper bonded Earth electrode of 17.2 mm dia, 3 Metres installed vertically as per the site conditions complete and top cover fully backfilled with backfill earth enhancing compound of 25 kgs. along with required masonary chamber, CI Cover outer size of 450mm X 450mm X 10mm including excavation & refilling etc as required.

Providing and fixing 50 mm X 5 mm copper strip in 80 mm dia 'B' Class G.I. pipe from earth electrode including connection with brass nut, bolt, spring, washer and brassing i/c excavation of bituminous/ concrete / pavement & excavation of Soil to the depth of 0.30 Mtrs from ground, refilling the Soil and with 1:2:4 concrete on top for 0.15 Mtrs after laying Pipe and making good the same to original surface etc. complete as required.

Providing and fixing 50 mm X 5 mm copper strip in recess including cutting of concrete floor and finishing to original floor and connection with brass nut, bolt, spring, washer and brassing etc. as required.

Providing and fixing earth bus of 50 mm X 5 mm copper strip on surface including connection with brass nut, bolt, spring, washer and brassing for connections etc. as required.

Providing Civil Works as required as detailed below:

Making of cable trench of sizes 1 Mtr. width X 1 Mtr depth as extension of existing trench by demolishing of cement concrete/flooring on existing floor manually/ by mechanical means, excavation of trenches of required width upto a depth of 1.2 Mtr.below the concrete area and getting out the excavated soil/sand within a lead of 200 Mtr., providing and laying of position1:4:8 (1 cement : 4 sand : 8 graded stonegraded stone 40 mm nominal size.) cement concrete at bottom, RCC of 1:2:4 including the cost of centring and shuttering for making the walls of thickness not less than 9 inch as required & cement mortar 1:4(1 cement :4 M Sand) and inside plastering 12mm thick with cement mortar 1:3 finished with floating coat of neat cement complete as required and matching with existing trench etc..as required.

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping,bed blocks, anchor blocks, plain window sills, fillets, sunken floor,etc., up to floor five level, excluding the cost of centering, shuttering and finishing.

Cement concrete in 1:3:6 (1 cement: 3 coarse sand : 6 graded stone aggregate 20mm nominal size)

Cement mortar in 1:6 (1 cement: 6 coarse sand )

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in with Cement mortar 1:6 (1 cement : 6 coarse sand).

Cement plaster of 15 mm on the rough side of single or half brick wall of mix with 1:6 (1 cement: 6 coarse sand).

Steel rod for RCC Slabs

Demolishing of hard concrete floor manually/ by mechanical means using compressor drilling machine and making the surface to original finish with PCC of 1:2:4 mix to match with the adjacent hard concrete floor including disposal of concrete debris away from Airport premises etc. complete as required.

Liasoning charges towards CEA Approval of Sub-Station consisting of new 11KV HT Panel, new LT Panels, Hybrid filter panels, existing 1Nos. Of 400KVA Transformer, DG set and other LT installations in Power House including Preparation of complete Drawings and other documents required for CEA clearance, submission of the same with CEA and getting Final CEA Approval etc. complete as required.

CHENNAI ENGINEERING SERVICES

Awasthi Electric Works