AUGMENTATION OF ELECTRIC SUPPLY NETWORK AND ASSOCIATED WORKS IN 505 ABW AT DELHI CANTT-10

Amount

Excavation in trenches not exceeding 1.5 meters wide & not exceeding 1.5 meters in depth for laying of cable and getting out in soft/loose soil including trimming the sides forming bottom surfaces to required level complete all as specified and as directed by Engineer-in-charge.

Returning, filling in including spreading leveling, watering and well ramming in layers not exceeding 25 cms thick in each layer of soil complete all as specified and as directed by Engineer-in-charge.

Removing excavated material to a distance n.exc 50 meters and depositing where directed at a level not exceeding 1.5 mtrs above the starting point complete all as specified and as directed by Engineer-in-charge.

Material and labour for river washed and screened, dry sand for filling in trenches below and around underground cables, filling in existing Cable duct in side the sub station situated at different location for cushioning of cables and sand filling under floors or in foundations of transformers including watering and consolidation etc, complete all as specified and as directed by Engineer-in-charge. NOTE:-Measuement shall be taken after punnung down.

Supply and laying factory made non-reinforced precast concrete cable cover class HV type-I with size 300mmx180mmx40mm all as complete and specified as directed by Engineer-in-charge.

Supplying, laying, jointing testing and connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable of size 300 Sqmm 03 Core (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in HDPE pipe / fixed to pole, including jointing & testing complete all as specified and directed by Engineer-in-charge. ( Loc :- Shekawati 33 Grid to Kirby 33 KV Grid). Note:- HDPE pipe and Excavation and Earthwork shall be measured & paid separetaly under respective item of Sch 'A BOQ'.

Supply and fixing cable route indicator made of RCC with 8 mm TMT size 1.5 M height x 60 cm wide x 10 mm thick tapered on top visible above ground duly painted with synthetic enamel paint of yellow colour base and letters with black paint. The description for writing for HT cable 11000 volts will be given by Engr-in-charge complete all as specified and directed .

Supply,installation, Commissioning ,design,engineering, manufacture, inspection,painting and testing complete with all accessories of transformer of capacity 16 MVA step down, outdoor floor mounted, double copper wound,3 Phase, 50 Hz, AC, Oil immersed, ONAN/ONAF conforming to IS-2026 including cooling fans, external cooling tubes/radiator cores type having no voltage ratio 33000/11000 volts (corresponding to principal tapping ) winding delta connecting on Primary side (HV Side) and star connected on secondary side (LV side) in accordance with vector symbol Dyn11 (vector Group) with neutral brought out on LV side and looping on HV side for contact output so as to alter/vary secondary voltage by (+) 5 to (-) 15% in equal steps of 1.25% to be changed by means of (OLTC) on load Tap Changer with RTCC and AVR. Transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability PRIME GRADE, CRGO with M3/M-OH/ZDKH/ TCH grade , Perfectly insulated and clamped to minimize noise and vibrations, core shall be purchased directly from manufacturer of core or from their accredited marketing network and not through any agent. Before placing order for procurement of transformer, the contractor shall submit the credentials in respect of the manufacturer of core and transformer shall be procured only after approval from GE in respect of name of manufacturer of transformer as well as manufacturer of core. The limit of termperature rise after continous full load runs as specified in IS/IEC 60076 shall be suitably adjusted to suit the ambient temperature of maximum 50 degree celsius prevailing at site all as specified and directed including having following characteristics :-

The transformer shall confirm to the latest edition of applicable standard as follows :- (i) IS-2026, for tests and tolerance of guarnteed Particulars, (ii) IS-3639 for Fitting and accessories (iii) IS2099 for Bushing >1000V (iv) IS-7421 for Bushing <1000v (v) IS-1271 for Electrical insulation classified by Thermal stability

(a) Winding (i) HV Winding -Layer/disc winding (ii) LV Winding-Helical/Disc widing

(b) Insulation Level (i) HV-170 (ii) LV-70

(c) Insulation level (Power frequency with Stand KVrms) (i) HV 70 (ii) LV-28

NOTE:- (i) The oil temperature and winding temperature guages shall be housed in a marshaling box made up of MS sheet as per manufacturer recommendations with hinged door and having glass front side of the box and provision for entry of cables and compression glands. Following documents to be submitted for core during the stage inspection: •Invoice of supplier •Mills test certificates •Packing list •Bill of lading •Bill of entry certificates by customs (ii) The RCC foundation required for placing ibid power transformer is deemed to be included in ibid quoted rate. In addition the foundation should be as per OEM drawing. (iii) The Contractor should produce type test certificate of 16 MVA Power Transformer from NABL accredited Lab before obtaining sample approval. (iv) The Core shall be procured from one of these manufacturers – POSCO/ NIPPON/ NLMK/ AK steels. (v) Expenses/ cost for Factory Inspection & necessary travel/ freight/ conveyance/ stay expense for inspecting/ testing officers as nominated by the accepting officer for Factory Inspection shall be included in the rate quoted. (vi) The rate quoted includes necessary power/control cable for operation of OLTC, PRV limit switches, WTI, OTI, Double Float Buchloz Relay from RTCC Panel inside Control Room to Transformer.

Supplying, laying, jointing testing and connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable of size 1000 Sqmm single Core (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in HDPE pipe / fixed to pole, including jointing & testing complete all as specified and as directed by Engineer-in-charge. Note:- HDPE pipe and Excavation and Earthwork shall be measured & paid separetaly under respective item of Sch 'A' BOQ .

Supply & fixing cable end jointing kit for 11 KV grade cable for outdoor type termination heat shrinkable joint complete with jointing material and accessoies suitable for single core XLPE armoured aluminium conductor cable of size 1000 Sqmm complete all as specified and as directed by Engineer-in-charge.

Supply & fixing cable end jointing kit for 11 KV grade cable for indoor type termination heat shrinkable joint complete with jointing material and accessoies suitable for singlecore XLPE armoured aluminium conductor cable of size 1000 Sqmm complete all as specified and as directed by Engineer-in-charge.

Supply, installation, testing and commissioning of manufacturer’s factory manufactured and tested sheet steel clad / enclosed HT Vaccum Circuit Breaker (VCB) switchgear, indoor type, dust & vermin proof, motorised as well as manually charged, fully interlocked, horizontal draw out horizontal isolation type, floor mounted, 11 KV, 800 Amps busbar, 3 phase, 50 Hz, 25 KA/3 sec as per IEC 62271-200, extendable type, to be coupled with existing VCB, type UNIVAC including adapter panel (if reqd). The charging time of motor shall be less than 15 Sec making it suitable for rapid auto reclosing duty and safety shutters shall be provided to cover up the fixed high voltage contacts on bus bar and cable side when the bus trunk is moved to test/isolation position with all standard accesssories and metering equipments and comprising of followings complete all as specified and as directed by Engineer-in-charge. (a) Three single phase horizontal draw out type resin cast line type potential transformer of 11KV/110 volts, 50VA burden per phase class 1.0 accuracy connected star/star on HV side with HV&LV fises, isolating plugs, for HV side and LV connection. (b) CT dual ratio, 400-200/1-1 Amps rating, class 5P10 for protection & class 1.0 for metering 10 VA burden, short time rating 21 KA for 0.1 sec suitable for 11 KV - 03 Nos.. (Kirby Grid - 1 & Shekhwati Grid -01)

(c) Instrument & Protection Panel - Numerical relay with LCD display, 3 OC+1 EF, trip circuit supervision function, inrush protection, record and store at least 500 Events with Date and Time stamp, Last 10 Fault Records stored in Nonvolatile memory, Disturbance recording, self supervision function, 4 CT & 3 PT analog input, 8 DI & 6 DO, negative sequence currents, circuit-breaker-failure alarm, tripping circuit failures, Communicable on 61850 protocol, Breaker Control (ON/OFF) feature, suitable with 18 to 50 VDC complete with separate master trip relay. (d) Digital Voltmeter and Amp Meter, Digital Multifunction Meter (Accuracy class 0.5) with LCD display for measuring of current, voltage, power, power-factor, energy parameters, Total Harmonic Distortion and Maximum Demand Indication etc and shall have RS-485 port for communication on ModBus protocol. (e) LED indicating lamps for Breaker ON, Breaker OFF, Spring charged, TCH, Auto trip indicator, DC Supply ON, RYB phase indications. (f) T&C Switch for closing / tripping of VCB and Local Remote switch. (g) Heater with switch, thermostat and illumination. (h) 3 Pin plug socket with switch. (j) 01 No shunt trip coil and closing coil 24V DC (k) Emergency switch Note : (i)The VCB Panel should be compatible with the existing system. Any adapter panel required to integrate ibid VCBs with the existing system is deemed to included in ibid quoted rate. (ii) The VCB make should be OEM only & No channel partner will be allowed in ibid work.

Supply and fixing straight through jointing kit for 11 KV grade(E) Heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 300 sqmm complete all as specified and as directed by Engineer-in-charge.

Supply and fixing cable end jointing kit for 11 KV grade cable for indoor terminal Heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 300 sqmm complete all as specified and as directed by Engineer-in-charge.

M&L for danger notice board of 1.6 mm thick mild steel,vitreous enamelled white with letters,figures and conventional skull and bones in signal red colour and fixed with MS clamps,bolts and nuts of approved size for HT 25 x 20 CM size complete.

Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 2.1 m below normal ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized Iron Strip of size 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised ironside complete all as specified, including testing and commissioning complete all as specified and as directed by Engineer-in-charge. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 15 mm bore GI pipe light grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI Strip and protection pipe upto 7.5 meter beyond the earth plates electrode.

Supply, fixing,testing and commissioning of following vaccum circuit breaker with Relay Control Panel comprising of the following :- (A) 36 KV, 1800MVA, 2000A, 50Hz voltage class outdoor type Vacuum Circuit Breaker for use on system voltage 33 KV with control panel. The circuit breaker and accessories shall conform to IEC-62271-100 or IS 13118 and other relevant IEC/IS standard. The circuit breaker shall be complete with terminal connection, operating mechanism, control cabinets, cable from yard to control room along with accessories like gland, terminal block, lugs, necessary steel support structure and RCC foundation for CB and control cabinet The circuit breaker shall be required to perform as per technical parameters given below:-

(a) Installation - Outdoor, 3-pole, Vacuum Live-Tank, Porcelain Clad, Switchyard Breaker (b) Rated Voltage - 36 KV (c) Rated Current - 2000A or higher up to 2500Amps (d) Power frequency with stand voltage (KV rms)- 70 KV (e) 12/50 microsecond lighting impules with stand voltage (KV Peak)-170 kVp (f) Rated short circuit current breaking capacity (3 Sec ) at rated voltage specified 31.5 KA (g) Control Voltage incl. trip/close coil - 50V DC (h) Spring Charging Voltage - 230VAC (j) Symmetrical interrupting capacity (KA/RMS) 31.5 KA (k) Rated short circuit Making Current (KAP)-80A (l) Out of phase breaking capacity (KA rms) as per IEC (m) Rated operating duty as per IEC(o) Temp rise over the design ambient temperature -As per IEC 62271-100 (n) Operating Mechanism -Spring (o) Creepage distance as per IEC-900mm (p) No of trip/close coil 50 V DC-02 Nos (q) Tripping system - 50 V DC

(B) 33KV control & relay panel indoor type for above 36 KV Vaccum Circuit Breaker. The panel shall be with back access double door arrangement, dust and vermin proof , IP -54 class protection and made 2mm , CRCA MS sheet powder coated finsh over one coat of red oxide primer both side operating type, including internal wiring using 1.1kV FRLS insulated multistrand cable (2.5sqmm for CT/PT and control circuit, numbered and colour coded as per IS-5578/1984 having suitable entry for cable consisting of the following:- (a) Main Numerical Protection Relay with LCD displaying mimic bay for ON/OFF control and monitoring of feeder current. Built in disturbance recorder and event logger to monitor the Sequence of Events (SoE) using upto 1000 event codes. The relay shall be communicable on IEC 61850 GOOSE platform, using RJ-45/USB/OF port and capable of Binary Signal Transfer between local and remote relay over Fiber Optic. (i) Line Differential with high set and low set (stabilized) with second harmonic restraint to bypass transformer inrush. The scheme will be implemented using Single Mode Fibre optic protection communication link between local and remote relay.suitable single mode Fibre optic port shall be part of the relay including connected items like LIU and patch cord etc. (ii) Over current and earth fault protection with minimum pickup at low set of 5% and 1% respctively. (iii) Transient/intermittent earth fault protection. (iv) Phase discontinuity protection.

(b) Fiush mounted auxillary relay for:- (i) Trip Circuit Supervision. (ii) Master Trip. (iii) Fuse fail (PT) supervision operated . (iv) SF-6 gas Pressure low. (v) DC supervision scheme ( c) Metering (i) Metering Equipment incl 01 x Digital Voltmeter (Acc. CI.0.5), 01 x Digital Ammeter (Acc. CI.0.5) ,01 x Tri- Vectro - Meter (Acc. CI.0.0) (ii) 01 no Multi- Function Meter (Accn.CI.0.5) Shell Be provided with LCD display for measuring current voltage, power ,power-Faactor and energy parameters, Total Haromnic Distrotion and Max Demand Indication , same shall be communicable on Mod Bus via RS485 port

(d) Indicating Lamp (i) Bus-01 Isolator ON/OFF (ii) Bus 02 Isolator ON / OFF (iii) Line Isolator ON / OFF/Earth (iv) CB Auto trip (v) CB ON (vi) CB OFF (vii) CB Spring Charhe (viii) Trip circuit healthy (ix) DC Available LED with puch-button (x) R-Y-B Phaqse LED Indication (e) Semaphore indicator (i) Circuit Breaker N, OFF (ii) Bus-01 Isolator ON, OFF (iii) Bus-02 Isolator ON, OFF (iv) Line Isolator ON, OFF, EARTH

(f) Control switches/Push Buttons (i) Trip-Neutral-Close Switch for Circuit Breaker Control-01 NO (ii) MCB for AC isolation - 01. (iii) MCB for DC isolation - 01. (iv) Heater switch with thermostat-01 No. (v) 3-pin socket with ON/OFF switch - 01 No. (vi) CFL Lamp with ON/OFF switch - 01 No. (g) 08-Windows Annunciator with hooter and mute,Acknowledge, REset and Test Buttons for:- (i) OC TripAlaram. (ii) EF Trip Alaram. (iii) Line Differential Trip Alaram. (iv) PT Fuse Failure Alaram. (v) SF6 Gas pressure Low Alaram. (vi) Trip Circuit Alaram. (vii)Spare. (h) Test Terminal Block for CT. (j) Suitable terminal arrangement along with Light Interface Unit, Patch-cord and associated port for spliced connection with external armoured fibre-optic cable shall be provided for achieing pilots-wire connection (line-differential).

Note:- (i) Cost of supply and fixing of Outdoor type Terminal Kiosk (TK) having terminals/disconnecting-links for termination of CT/PT wiring including PT secondary fuses complete all as required at site are deemed to be included in the quoted rate. (ii) Cost of construction of foundation including construction material, necessary earth work and steel structure as per manufacturer design for breaker & TK complete all as required at site are deemed to be included in the quoted rate. (iii) The control panel should be compatible with the existing system. Any expenditure incurred to make the adopter panel compatible with the existing system is deemed to be included in ibid quoted rate. (iv) The VCB make should be OEM only & No channel partner will be allowed in ibid work

Supply , installation, testing and commissioning of air brake off load line isolator switch rotating type manually gear drive mechanism operated highest system voltage 36 KV rated current 2000 Amps triple pole with earthing device each pole consist of insulating pedestals 03 Nos on galvanized steel base as per BSS /IS including rotating blade of HDE copper and fixed contacts of same material , spring loaded arcing horns of adequate section to brake magnetizing current of transformer as directed with adequate 50mm dia GI operating pipe for operation from ground level and operating handle complete with both off and on positions complete all as specified and as directed by Engineer-in-charge.

Supply, installation, testing and commissioning of 33 KV current transformer oil cooled out door single phase, oil immersed and self cooled type of ratio 800-400/1-1-1-1 suitable for metering and protection equipment installed on control panels terminal block as specified below :- (a) Normal System Voltage-33 KV. (b) Highest System Voltage-36 KV. (c) Rated Primary current- 800-400 Amp. (d) Rated secondary current- 1 Amp. (e) Nos of Core - 4. (f) Core01: Accuracy class 5P10, 10VA, ALF ≥10. (g) Core02: Accuracy Class 1.0, 10VA, ISF ≤ 5. (h) Core 03 Protection core accuracy class -PS,Protection knee point voltage- 300 Volt at lower ratio. (j) Core 04-Spare. (k) Continuous thermal current rating 120 % of rated primary current. (l)Temp rise at rated contineous thermal current over ambient at site - Less than or equal to 45 degree C. (m) Insulation Level- 36/70 KV.170 KVP. (n) 1.2/50 Micro second impulse withstand test voltage- 170 KV (peak). (o) Short time thermal current rating for one second - 25 KA/1 Second. (p) Dynamic Current Rating - 62.5 KA ( peak). (q) Porcelain Bushing type - Hollow Cylinder. (r) Creepage distance of HV bushing - 900 mm (min). (s) Primary & Secondary winding material - Copper Note : Laying/connecting of control cable from yard to control panel alongwith all accessories complete is deemed to be included in ibid quoted rate.

Supply installation, testing and commissioning of Potential Transformer (PT) oil cooled out door single phase ( Earthed type) of voltage ratio 33 KV/110 V class 3P - 0.5-3, burden 50 VA insulation level of 70/170 KV as specified below:- (a) Normal System Voltage-33 KV. (b) Highest System Voltage-36 KV. (c) Rated Primary voltage- 33 KV/√3. (d) Rated secondary voltage- 110 V/√3. (e) Nos of Lt winding 2. (f) Metering Core Accuracy class - 0.5. (g) Metering Core Rated Burden- 50 VA. (h) Nos of Phase- Single (Earthed Type) (j) Protection core accuracy class - 3P. (k) Protection core rated Burden - 50 VA. (l) Rated Voltage Factor - 1.2 continuous & 1.5 for 30 Sec. (m) Insulation Level- 36/70 KV.170 KVP. (n) Temp rise at rated contineous thermal current over ambient at site - 45 0C. (o) Porcelain Bushing type - Hollow Cylinder (p) 1.2/50 mcro second impulse withstand test vol -170 KV (Peak). (q) Creepage distance of HV bushing - 900 mm (min). (r) Primary & Secondary winding material - Copper.

M&L for Bore earthing 150 mm dia burried by vertical boring machine, depth 80 mtr below ground level using earth electrode 50mm dia GI pipe medium grade duly drilled hole of 12mm dia, 115mm C/C on both side of the pipe including lowering in bore well upto the depth of 79 mtr and one mtr above the ground level. The pipe electrode should be filled around commericial salt charcoal dust, copper suphate and magnesium phosphate of 30 cm layer each upto the full length of pipe. The borewell should have 12 mtr of length 150mm dia MS pipe for protection of borewell. Welding of GI Strip 50mmx6mm on earth electrode GI Pipe 50mm dia upto 10mtr below ground level and 15 mtr from the bore well to test point gun metal and PCC foundation surrounding the borewell 60cmx60cmx30cm all as complete and specified as directed by Engineer-in-charge. GI strip more than 25mtr will be measured and paid separately. Note :- Cost of gun metal test point deemed to be included in the quoted rate.

S&F of Cross arms, bracings, supports, clamps and back plates 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 or directed and inclusive of one primer coat, one under coat and one finishing coat of aluminium paint on 33 KV yard structure all as complete and specified as directed by Engineer-in-charge.

Boring of holes under road, pavement, hard standing by trenchless technology using ultra sounding technique and necessary machine including HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure all as complete and specified as directed by Engineer-in-charge.

Boring of hole under road/pavement/hard standing or any other situation by mannual means and suitable for passing of HDPE Pipe 100 to 160 mm bore and making good both ends all as complete and specified as directed by Engineer-in-charge.

S&F of HDPE Pipe of size 160 mm dia 5kgf/cm square for cable protections/pole for crossing of culverts/nallah/Road all as complete and specified as directed by Engineer-in-charge.

S&F ACSR conductor of size zebra suitable for existing structure and Isolator, CTs etc stringing on insulators including SWG aluminium binding wire line connector and jumper including all peg, tie clamps etc complete all as specified and as directed.

M K ENGINEERS CO.

M/S N.K BUILDERS

SAGGI ELECTRIC COMPANY

R D Bansal

Vijay Electricals