Provision of Electrical Power supply to Land Based Test Facility at NSTL Visakhapatnam

Amount

Supply and Installation of 11 KV Compact Sub Station cosisting of following all as specified and directed :- (a) HT Switch Gear : 11kV, 630Amps 21KA for 3 Sec. SF6 insulated Non-Extinsible Fixed type with Copper Busbar Compact switchgear (Type V+M) consisting of One No. Fixed Manually Operated Vac+B13:B18uum Circuit Breaker having earth switch within SF6 insulated robotically welded non ferrite non magnetic stainless steel enclosure of thickness 2.5mm having IP 67, with series trip,self powered microprocessor based numerical 3 O/C & 1 E/F relay (IDMTL + Inst.) protection.Interconnection between HT switchgear and transformer shall be using 1Cx3x95 sq.mm Al. unarmorured XLPE Cable i) Relay shall be self powered . ( 50,50N,51,51N) with RS485 communication port - 03 Nos ii) Protection CT shall be 100/1A 2.5VA 5P10. - 03 Sets iii) Metering CT shall be 100/1A 2.5VA Class 1.0 accuracy - 01 No iv) Metering PT: 11000/√3 110V/√3 50VA Class 1.0 Accuracy . - 01 Set v) Voltage presence indicator for incoming Healthy Indications - 03 Nos vi) Mechanical Indication for Breaker ON/OFF/EARTHED. - 03 nos vii) Standard Manometer (SF6 Gas Pressure Indicator)- 01 No viii) 24V DC battery 12Ah Capacity & Charger - 01 No ix) 6 window Announciation and hooter - 01 No x) Master trip protection realy - 01 No xi) Operating handle - 01 No All incoming modules of the RMU shall be capable for cable termination of 3C x 240 sq.mm Al XLPE Cable

(b) Transformer : - 1000 KVA 11KV/433V Dyn11 Copper Wound Cast Resin Dry Type Transformer with Off load tap links of +5% to -5% @2.5%. Class of Insulation: F, Temperature rise limits of 90 deg.C over ambient of 50 degrees. Transformer Losses:(Losses as per ECBC 2017) Max. losses at 50% loading=4500 W, Max losses at 100% loading: 12000 W and impedance 5 % with following accessories. i) Surge Arrester on HT side- 01 Set ii) WTI with Alarm and Trip Contacts - 01 No iii) Rated temp Class of Transformer Compartment K10 upto 1000kVA - 01 No

c) LT PANEL consisting of following :- i) 1600 A Aluminium Busbar (100% for Phase & Neutral) Current density 1amp/sqmm ii) Incomer from transformer, 1600 Amps 4P 50Hz 65KA EDO Type Air Circuit Breaker (ACB) with microprocessor based Ekip Dip release for overload, short circuit & Earth Fault protection with RYB ON OFF TRIP Indication lamps, LT side metering CT 1000 A / 5A,5VA, Cl:1.0, Multifunction meter, CL-1.0 Accuracy with RS485 Port. iii) Outgoing feeders : - 1200 Amps 3P 50Hz 50KA EDO Type Air Circuit Breaker (ACB) with microprocessor based Ekip Dip release for overload, short circuit & Earth Fault protection.- 01 No and 400A 433V 4P 50Hz 50 KA Fixed Manual MCCB Microprocessor based released OC,EF, SC Protection - 01 No

d) OUTDOOR ENCLOSURE : - Outdoor type enclosure having construction of Galvanised Sheet Steel having 1.5mm thickness for Non-load bearing & 2 mm for Load bearing partition sheets & Door with HRCA 4 mm base frame. The Enclosure shall have IP54 degree of protection for HT & LT switchgear compartment & IP23 degree of protection for Transformer compartment. The enclosure exterior shall be Powder Coated (Colour Light Gray & D.A.Gray ). Each compartment will be provided with the door and pad locking arrangement. The Compartment illumination lamp with door operated switch shall be provided for MV & LV compartment. As per IEC 62271-202

e) INTERCONNECTION AND EARTHING :- Interconnection Between HT switchgear & Transformer using 1Cx3x95 Sq.mm XLPE Single Core Aluminum unarmorured Cable & Interconnection between Transformer & LT switchgear using Aluminum Busbars. Internal earthing connections by using 50X6 GI strips, Transformer Neutral shall be 50X6 CU.

Note :- i) Compact Sub-Station is outdoor plinth mounted type. Erection , Commissiong and Civil work cost for package substation is deemed to be included in rated quoted. The Foundation of CSS shall be done as per recomendation of OEM. ii) Compact Sub-staion will be complete with the internal interconnections & earthing. iii) Makes for items of CSS shall be as recommeded by OEM of CSS. CSS is type tested as per IEC62271-202 .Only routine tests as per IS shall be carried out during inspection. iv) CSS structural features like colour shade, sheet thickness etc shall be as per Standard of OEM. v) Interconnection between HT Switchgear and primary of transformer shall be done through 1C x 3R x 95 sq.mm Aluminum Unarmoured XLPE cable instead of Armored cable.

M & L for Excavation in trenches n.exc 1.5 mtr wide and n.exc 1.5 mtr in depth in soft/loose soil complete all as specified and directed.

M&L for dry sand cushioning to under ground cable intrenches including spreading, levelling and hand punning complete all as specified and directed.

Supply and laying un-reinforced precast concrete cable cover Class HV type I, size 300 x 180 x 40mm complete all as specified and directed.

Supply and laying un-reinforced precast concrete cable cover Class LV type I, size 250 x 150 x 40mm complete all as specified and directed.

M & L for Cement concrete (1:2:4) type B-2 (using 40mm graded stone aggregate) as in foundations, filling and mass concrete complete all as specified and as directed

M & L for cutting trench of width 30cm and depth n.exc. 60cm through road/ hard standing for laying cable through GI pipe and returning, filling in including spreading leveling watering and well ramming in layers not exc 25cm after laying the cable complete all as specified and directed.

M & L for for GI Tubing light grade 150 mm for cable protection, laid under plinths /floors/roads/paths/culverts or fixed on walls or concealed in walls or along the steel poles by means of M.S.F.I clamps with necessary bolts nuts & washers etc complete all as specified and directed.

M & L for Returning filling in including spreading, levelling, watering and well ramming in layers not exc. 25 cm in thick complete all as specified and directed..

M & L for Removing excavated material to a distance not exc 50 mtr and depositing where directed at a level n exc 1.5 m above the starting point complete all as specified and directed.

Supply, laying and connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminum conductor, 11000 volts grade cross sectional area 185 sqmm 3 core laid in ducts/wall/cable tray/trenches with suitable size complete all as specified and directed.

M & L for cable jointing kit for 11 KV (earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminum conductor cable of size 185 sqmm complete all as specified and directed.

M&L for providing earthing complete all as specified and directed with galvanised steel earth pleate electrode 600x600x6mm thick buried directly in ground earth pit not less than 2.25 mtr deep below ground level with top edge of the plate not less than 1.5mtr below normal ground level) connected to galvanised iron earth strip 25X4 mm as earthing lead by means of bolts, nuts, check nuts & washers of GI or steel and connecting to earth dolly all as shown in electrical plate No 3 connected to earth test point all as specified and indicated including testing on complete all as specified and directed. Note:- Earth continuity conductor and GI protection pipe beyond 7.5m shall be measured and paid under the respective items.

M&L Earthing continuity galvanised iron strip 25X4 mm dia or main earthing lead fixed to wall with clamps or recess or croses or buried in ground or drawn in conduits/pipe or fixed to poles or any other indicated situation for loop earthing etc as required complete all as specified and directed.

Supply, installation, testing & commissioning of HT 11 KV VCB consisting of capacity 350 MVA ,630 Amps , indoor type VCB ,extendable 25 KA/1 sec totally enclosed free standing,floor mounted type,compartment based with truck mounted VCB,spring operated electrically and manually charged operating mechanism suitable for horizontal isolation,horizontal drwa out type VCBs with copper busbars,self supported insulated busbar with full voltage rated complete VCB panel conforming to IEC 62271-200 standards and IP 4X class of protection comprising of necessary busbar extensions and connections circuit breaker suitable for E2,M2,C2 duty vacuum interrupters of the circuit breakers completely encapsulated in epoxy housing switch gear and control gear panels of fully arc proof IAC AFLR for 26.3 KA for 1 sec with micro processor based numerical relay communicable type in line with RS 485 Modbus protocol,comprising of three over current ,one earth fault protection relay with high set for both phase and earth and with fault memory,universal aux supply,master trip relay,trip circuit supervision relay.digital multi functional meter with class 1.0,PT 11 kv/110 AC,Power pack 11 KV,230 V AC complete all as per enclosed BOM.

(N) Feeder protection relay with phase over current (50/51),directional phase over current (67),SOFT switch on to fault (50 HS),Current unbalance (46),thermal overload(49),earth fault (50N/51N),Directional earth fault(67N),under voltage (27),over voltage(59),zero sequence voltage protection (59N),frequency (81),auto reclose(79),Circuit breaker failure(50BF),cold load pick-up and magnetising inrush,programmable stages(99),CB wear.relay shall have 4CT and 4VT inputs.Relay shall be provided with atleast 16 digital inputs and 8 digital outputs and 1 self supervision output.Relay shall have also these features inbuilt.MIMIC display with single line represntation and switch gear controls shall be possible through the MIMIC front USB for connecting to PC,conformal coating to withstand harsh environment ,support PRP redudancy communication protocol on FO ports.Web server (web HMI) feature to monitor and control using LAN shall have minium 1000 events.Relay shall support SNTP time synchronization & support customer defined programmable logic with minium 8 programmable LED.relay shall have disturbance recorder with settable sample rate from 8 cycle to 32 cycle or MICOM P3U30 or equivalent in makes:ABB/CG/Siemens (o) Panel shall also have additional features like continous rated closing/tripping coils,spring charging handle,manual closing/tripping off the VCB with compartment door closed,short time rating 01 sex as per IEC 62271-200 AND vcb shall be suitable for E2,M2,C2 Class.(p) Breaker shall also be provided with Aux switch 6NO +6NC contacts mounted on the draw out portion of the switch gear and position cell switch with 3 NO + 1 NC contact each for test position.(q) IAC AFLR 26.3 KA for 1 Sec. (r) 12 window annunciator (s) TAFU card for Aux transfomer faults. Note :-(1) Cost for necessary arrangements and adapter required as recommended by OEM for connection with existing VCB make Kirloskar is deemeed to be included in rate quoted by contractor.

Supply, laying and connecting XLPE insulated armoured heavy duty electric cable with aluminum conductor 1100 volts grade cross sectional area 300 sqmm 3.5 core laid in ducts/wall/cable tray/trenches with suitable size of cable glands, crimping type cable lugs, connecting to existing MCCBs in panels complete all as specified and directed.

M & L for cutting in position existing 50 mm bore GI water pipe and tapping in position for taking the branch connection of size 25 mm, supply and installation of suitable GI Tee including all ends, suitable size of reducer, flanges complete as required as per site condition nuts & bolts, washers etc for tapping out branch connection complete all as specified and directed..

Supply and fixing GI pipe complete with GI fittings of 25 mm dia including trenching and refiiling etc complete all as specified and directed.

Supply and fixing gun metal globe or gate valve 25 mm dia, with CI wheel of approved quality (screw end) including providing required fitting an done union with each valve for for easy maintenance complete all as specified and as directed.

M & L for providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS : 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank complete all as specified and directed.

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