SPL REPAIR FOR PROVISION OF EXTERNAL ELECT SUPPLY FOR TECH AREA AT NAMS

Amount

Excavation in trenches in soft/loose soil n.exc. 1.5mtr wide and n. exc. 1.5mtr in depth and getting out for laying of cables all as specified and directed

Removing excavated material n. exc. 50m and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed.

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

M&L for Sand cushioning to underground cable 8cm before laying the cable and 15cm (punned down to 18 cm) after laying and stretching the cable complete all as specified.

M&L for unreinforced precast concrete cable cover class HV , type 1 flat , size 300mmx180mmx40mm covering protection to the electric cable laid dry flat transversally along the length of cable on sand cushioning complete all as specified

M/L Sub Class 'B' brick covering protection to the electric cable laid dry flat transversally along the length of cable on sand cushioning with width equal to length of brick complete all as specified.

M&L for PCC ( 1:2:4) type B1 using 20 mm graded stone aggregate for bed of RMU/ CSS/ Servo voltage stablizer and as where required Including necessary form work fair finished to exposed surface.

Supply, laying, commissioning and testing of HT XLPE insulated, seceened, PVC bedded, galvanised steel strip or wire armoured heavy duty electric power cable with aluminium conductor,6.35/11 KV suitable for 11000 volts grade earthed, cross-sectional area 185 sqmm 3 core complete all as specified and directed,

Supply, install, testing & commissioning of Package Substation Distribution transformer, outdoor type of capacity 500 KVA, 3 phase, 50 Hz enclosed with CRCA Sheet Steel 2 mm thick made from CRCA powder coated, CPRI approved comprising the fwg specification :- (i) Transformer :- (a) Capacity 500 KVA (b) HV/LV-11 KV / 0.415 KV (c) Winding -02 Nos (d) Phases 03 (f) Connection - Delta /Star Type (g) Type - Dry type (h) HV/LV winding-copper winding (j) Tap Changer-OFTC (Dry type) on HV Side (k) Input Range-5% to +5% (l) No of Steps -04 (m) Insulation -Class F, level-II (ii) Vaccum Circuit Breaker -11 KV iC/OG Panel - 01 Nos (a) Indoor type metal clad, totaly enclosed & fully interlocked drawout type vaccum circuit breaker as per IEC 62271-100/200/IS 13118. Single break trip free breaker with SPMX Mechanism, complete with self contained operated fully interlocked rack in & out mechnaism. (b) HVX breaker 800 Amp, 26.3KA for 3 sec. Breaker is featured with mechanism ON & OFF indicator with hand trip device, spring release coil, shunt trip coil & auxilary switch of 6 No + 6 NC (c) Bus bar material aluminium

Supply and fix Servo motor operated line voltage corrector (SVC) suitable for both balanced & unbalanced supply and load 500 KVA CU - Oil Cooled , three phase, naturally oil cooled, indoor type & designed for input variation between 210 V to 480 V with output voltage stabilized at 415 volt with accuracy ± 1% and speed of correction 8 Volts per second and of capacity 500 KVA complete including filling with oil at site all as directed and as specified by Engineer -in-Charge.

Supply, Install, Testing and Commissioning in replacement of factory made outdoor type dust and vermin proof(IP 54 protection) TTA feeder Pillar LT Panel board cubicle double door hinged type of suitable size 415V AC, 50Hz, fabricated of GP/CRCA sheet 3.15mm(10 SWG) thick machine pressed and angle iron frame 50mm X 50mm X 6mm grouted in PCC 1:2:4 type BI (20mm grade stone aggregated) powder coated in Seven Tank process inside and outside complete including 4 Pole aluminum Bus Bar of suitable size mounted on porcelain insulator ,concealed hinged door with 3Positioning door locking arrangement and enclosed in chamber made out of 2mm sheet thick GP/ CRCA sheet machine pressed and connection from incoming and outgoing electric cable with suitable size thimbles/lugs cable gland with open able shutters on both side and comprising of following (i)MCCB 350 Amps 36KA 4pole with microprocessor release adjustable type of as a incomer-01 (ii) MCCB 36 KA, 3P, 160Amp -04 (iii) Aluminium Busbar of 500 Amps phase+Neutral with insulated (iv) Digital Ammeter and volt meter of suitable size (v) LED indicator lamp Red/yellow/Blue colour

Material and labour earthing with copper plate 60×60cm ×3.15mm thick electrode and 20×3mm copper strip as earthing lead, buried directly in ground to a depth not less than 2.25 mtr deep below normal ground level with top edge of the earth plate not less than 1.5 mtr deep below normal ground level connected to20×3mm copper strip as earthing lead by means of nuts, bolts and washers of steel after welding of GI strip to earth electrode to the full length of earth plate, GI light grade pipe 40 mm bore protection pipe upto test point, 20mm dia GI medium grade watering pipe with funnel and wire mesh, RCC pit cover of size 300x300x40mm reinforced with XPM having weight not less than 4Kg/sqmm including 6mm thick MS bar handle made to shape, PCC pit with 1:3:6 type C1 with angle iron frame made of angle iron of size 40x40x4mm, adequate qty of charcoal dust and salt layers all around the earth plate, excavation , earth work in any type of soil, removal of excavated soil and returning filling in all as required at site complete all as specified in plate No 3 of SSR Part-I and all as specified or indicated including testing on completion.NOTE :-Rates inclusive of necessary excavation in any type of soil, earth work, PCC pit, RCC cover, funnel with watering pipe,Copper earth strip upto 7.5 m long for connecting to test point etc. all as required at site for complete earthing) and dismantling old defective earthpit.

M&L for earthing complete with galvanized steel earth plate electrode 600x600x6mm thick buried in ground vertical to a depth not less than 2.25 mtrs deep below ground level with top edge of plate not less than 1.5 mtr below normal ground level connected to galvanized GI strip of size 32 X 6 mm and 40 mm dia bore 7.5 mtr long light grade GI protection pipe for earth strip and GI watering pipe 40 mm dia medium grade from the top edge of earth plate fixed with deep cut on one end of pipe and fix from earth plate up to one feet above ground level of other end and plugged watering pipe at top with MS cap and grouted in PCC 1:2:4 of size 30 X 30 X 30 CM etc and 15 CM alternate layer of charcoal and salt around all sides of earth plate all as shown in electric plate no 3 of SSR part I of 2009. Note :- All joints either strip to strip of strip to earth plate are fixed with welded joints.

Design, Supply, Erection, Testing and Commissioning of 11 KV, 630A, 21kA for 1 sec, SF6 insulated, Motorized , Outdoor, Non-extensible RMU along with air insulated bus connected unit for auxiliary supply, type tested in line with latest IEC standards. The RMU shall be suitable for operations at a height up to 1000 meters above sea level and at 40 degree ambient temperature without any derating. The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure. The RMU tank shall provide full insulation, making the switchgear insensitive to the environment with degrees of protection of IP67 . The switchgear operating mechanism shall have an IP2X protection and cable chamber shall have IP3X. The outer enclosure should be IP 54 type tested, should be powder coated with pure polyester based paint , suitable for the site installation conditions. Accidental overpressure due to an internal arc is limited by the opening of the safety valve, at the bottom of the metal enclosure, away from the operator. Plug in type of extensibility must be provided and coupling busbar should not be exposed to air to avoid oxidation of busbars. Extension of cubicle should only require 450mm to handle and the gap between the coupled RMU’s must be within 10mm. 11KV xxx Way Ring Main Units

Each of the above Ring Main Unit shall comprise of the followings: Load Break Switch (LBS) each comprising of the following: - 01 Sets (i) 11 KV, 630A, 21kA Motorized Load break switch; with built in line side manual earth switch- 01 Nos (ii) Position indicator through clear front mimic in lin with IEC 62271-103- 1 Nos (iii) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases.- 01 Nos (iv) Cable box with termination bushing suitable for upto 2 RUN 3Cx300 Sq mm, XLPE cable- 1 Nos (v) Fault passage indicator (FPI) with in-built Overcurrent, Short Circuit and earth fault indication (in (N-1) LBS). The FPI should be self-powered and should have internal lithium battery for external indication and setting of FPI in the absence of current.- 01 Nos (vi) Cable Boots suitable for cable size up to 1R*3C*300 sq.mm. cable- 1 Nos (vii) LBS Status Signals as - LBS On, LBS Off, LBS Earthed, FPI Operated should be given to FRTU. LBS On, LBS Off & FPI Reset should be Control commnds from FRTU to LBS.- 1 Nos NOTE:- LBS shall have 3 positions, open or disconnected, closed and earthed, and will be constructed in such a way that interlocking prevents unauthorized operations. Manual opening and closing will be driven by a fast-acting /snap action mechanism, independent of operator action. LBS and earth switch shall have a min of 1000 (M1) mechanical operations , 100 electrical operations at rated current and 5 nos operations ar rated SC current.

Vacuum circuit breaker (VCB) each comprising of the following:- 2 Sets (i) 11 KV, 630A, 21kA Motorized VCB with spring assisted mechanism and series trip coil; with built in manual line side three position disconnector cum earth switch.- 01 Nos (ii) Position indicator through clear front mimic in lin with IEC 62271-103- 1 Nos (iii) Self powered / auxiliary powered relay with O/C , S/C , E/F protection. Relay should have a front USB port for laptop interface , LCD display ,10 event records, 5 fault records, min 2 setting group and keypad for setting parameters for the relay.- 01 Nos (iv)Suitable ratio CT --/1 A, Class 5P10, 2.5VA for protection- 1 Set (v) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases.- 1 Nos (vI) Cable box with termination bushing suitable for upto 1 RUN 3Cx300 Sq mm, XLPE cable- 1 Set (vii) Cable Boots suitable for cable size up to 1R*3C*300 sq.mm. cable-1 Set (viii) Breaker Status Signals as - Breaker On, Breaker Off, Breaker Earthed, Relay Operated should be given to FRTU. Breaker On, Breaker Off should be Control commnds from FRTU to Breaker.- 1 Nos NOTE:- The circuit breakers shall have 2 positions: open or disconnected and closed. A separate and independent 3 position earthing switch and disconnector shall be fitted to open and earth the cables in such way that interlocks prevent all unauthorized operations.An operating mechanism can be used to manually close the circuit breaker and charge the mechanism in a single movement. An independent mechanism shall be fitted for the 3 positions earthing switch and disconnector Circuit breaker shall be fitted with a local system for manual tripping by an integrated push button. There will be no automatic reclosing. Circit breaker shall have a min of 2000 mechanical and electrical operations and 50 nos SC operations.Disconnector and earthswitch shall have a min of 1000 (M1) mechanical operations , 100 electrical operations at rated current and 5 nos operations ar rated SC current.

Air Insulated Bus Connected Unit comprising the following 1 Set (i) Air Insulated enclosure with necessary bus connection- 1 Nos (ii) 11KV/230V AC, 1KVA control transformer - 1 Nos (iii) Battery and battery charger, 12Ah, (I/P-230V AC, O/P - 24V DC)- 1 Nos (iv) As a minimum, the FRTU shall be capable of performing the following functions: (a) Acquiring analog values from Multifunction Transducers or alternatively through transducer- less modules and the status inputs of devices from the substation, processing and transmitting to Master stations. Capability to acquire analog inputs from analog input cards receiving standard signals viz current loops 4-20ma, etc. (b) Receiving and processing digital commands from the master station(s) (c) Data transmission rates - 300 to 19200 bps for Serial ports for MODBUS and 10/100 mbps for TCP/IP Ethernet ports (d) Use of IEC 60870-5-104 protocol to communicate with the Master station(s) (e) Use of MODBUS over RS485 interface, Protocol to communicate with the Protection Relay. (f) Have required number of communication ports for simultaneous communication with Master station(s), MFTs. (g) FRTU shall have the capability of automatic start-up and initialization following restoration of power after an outage without need of manual intervention. All restarts shall be reported to the connected master stations. (h) Remote database downloading of FRTU from master station from SCADA/DMS control center. (i) internal battery backup to hold data in SOE buffer memory & also maintaining the time & date. (j) Communication with at least four master stations simultaneously on IEC 60870-5-104

(k) RTU shall be capable of acquiring analog values through transducers having output as 4-20 mA, 0-10 mA, 0-+10 mA etc using analog input modules. (l)FRTU shall have one TCP/IP Ethernet port for communication with Master station(s) using IEC 60870-5-104 protocol. (m)FRTU shall one serial RS 485 ports for communication with MFTs to be connected in daisy chain using MODBUS protocol. Minimum 15 analog values (including 4 energy values) to be considered per energy meter- 1 Nos (v) Connection with adjacent modules will be direct through busbar , via bushing. VT’s and CT’s from the manufacturer and according to IEC61869-3 and IEC 61869-2 respectively shall be accepted.

Note:- (i) RMU degree of protection shall be IP54 for outer enclosure and IP67 for SF6 tank (ii) The make of vacuum interrupter , FRTU offered is the same make as the Ring Main units( or is from the technology partner OEM) (iii) An operator situated in front, lateral and rear (A-FLR 21kA – 1sec, downwards exhaust, for tank as well as cable compartment) of the RMU switchboard during an internal fault will not be exposed to the effects of arcing. Internal Arc Type Test Report for IAC AFLR 21 kA for 1 sec for both tank & cable box should have been for minimum 3 way / 3 Function RMU. (iv) Ring Main Units shall be manufactured by OEM only. (v) All operations shall be from front of the RMU, including access to cable bushings .Bushings along the sides or the rear of the RMU are not acceptable. Make : ABB/Schneider / Siemens /ITE Gurgaon / L&T / BHEL/ CG as approved by GE.

M&L for Cable end jointing kit for 11 KV (earthed) grade cable for Outdoor type termination cold shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sq mm complete , all as specified and directed,

M&L for Cable end jointing kit for 11 KV (earthed) grade cable for Indoor type termination cold shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sq mm complete , all as specified and directed,

M&L for Cable Straight through jointing kit for 11 KV (earthed) grade cable for Outdoor/ Indoor type termination cold shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sq mm complete , all as specified and directed,

Supply and Laying in trenches or passing through pipe UG cable XLPE, of cross section area 120 sqmm 3.5 core, PVC insulated,armoured heavy duty electric cable with aluminum conductor,1100 Volts grade.. Note : (I) Earth work/ sand cushioning shall be measured and paid separately .

All as per item above but 50 Sq mm X 3.5 core

All as per item above but 300 Sq mm X 3.5 core

All as per item above but 10 Sq mm X 4 core

S&F Galvanised pipe 80 mm light grade for mechanical protection for cable/ earthing strip complete all as specified and directed.

S&F Galvanised pipe 50 mm light grade for mechanical protection for cable/ earthing strip complete all as specified and directed.

S&F Galvanised pipe 40 mm light grade for mechanical protection for cable/ earthing strip complete all as specified and directed.

Supply, installation, testing & commissioning microprocessor based automatic power factor control 200 KVAR , LT panel board (MPFCS) 433 volt, IP-65, 50 cycles per second, cubical type, front & back openable double leaf type, dust & vermin proof with locking arrangement, powder coated with approved colour, made out of CRCA sheet 3.15 mm, outdoor type with canopy, cable entry glands, double compression type, duly pre-wired with suitable pillars made out of 50mm x 50mm x 6mm angle iron, grouted in & including PCC (1:2:4) using 20mm graded stone aggregate complete as per IS: 8623-1993 & all as per latest IS specifications & suitable for housing & including following accessories : - (a) Incoming MCCB of 400 Amps TP 36 KA rupturing capacity, 3 pole thermal magnetic release type with shunt trip coil - 01 No. (b) Copper bus bar duly insulated with colour coded heat shrinkable sleeve insulation for three phase four wire system of 500 Amps capacity rating with suitable size/ type non hygroscopic, non combustible track resistant, high strength FRP/ MC/ DMC insulators. (c) Capacitor switching contactor suitable for 1 x 10 + 1 x 15 + 3 x 25 + 2x50 capacity shunt capacitors (Contactor Amps rating shall not be less than 1.5 times nominal rated current), three poles, coil voltage 440 volts. Each contactor shall be protected with MCB TP 10 KA, D-curve type (MCB to be provided for 1.33 times KVAR ie 100% current capacity of the MPFCS irrespective of the fact that contactor's rating is 1.5 times). (d) One set current transformer (CTs) of ratio 500/5 to be fixed on bus bars of existing panel including connection with 2 core 1.5 sqmm armoured copper conductor cable complete with gland etc. (e) Shunt capacitors MPP type heavy duty 200 KVAR distributed in steps of 7 stages with configuration (1x10 + 1x15 + 3x25 + 2x50) and 50 KVAR (for fixed KVAR) directly connected to maintain power factor at 0.99 or unity, housed in self-extinguishing insulating material, with built in over pressure safety devices (Capacitors shall discharge automatically with electronic reactance discharge KA of suitable rating in kiloohm & watts, when power supply is switched off) 440 volts, 50 Hz, minimum static life expectancy of more than 1,15,000 hours & switching life (minimum 5000 switching operations per year) 1,00,000 hours, output capacitance tolerance of 0% to 10%. Di-electric losses less than 0.5 watt per KVAR, temperature (Max.) 55°C, IP 30 protection all as per latest IS.

(f) Wiring of complete panel board with multi stranded 2.5 sqmm flexible PVC copper wires & copper thimbles complete with number sleeve markers. (g) Microprocessor based automatic power factor control relay unit suitable for twelve stages of capacitor bank. The processor shall have the following features: - (i) Suitable for programming at site. (ii) Over & under voltage trip point ± 15%. (iii) Self adjusting switching sequence. (iv) PF adjusting range upto 0.8 lag to 0.99 lead by digital setting keys. (v) Auto calculation of C/K value. (vi) 50 Hz frequency, 433 volts, 3 phase system. (vii) Single phase prevention of capacitors & phase reversal for capacitors including electronic over load inter connected with MCCB. (viii) 50 Hz frequency, 433 volts, 3 Phase system. (ix) Indication for operational state of capacitors LED type. (x) Current input 0.5 Amps. (xi) Low current release less than 50mA, voltage release 35 milli seconds, voltage burden 5 VA, Current burden 0.5 VA. (h) Exhaust fan of 150 mm sweep for cooling of panel.

M&L for Cable end jointing kit for 11 KV (earthed) grade cable for Outdoor type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3.5 core XLPE armoured aluminium conductor cable of size 50 to 120 sq mm complete , all as specified and directed,

Material and labour for cable route indicator oval shaped of size 200x 150x6 mm thick made out of CI or MS, with letter imbossed as HT/ LT UG Cable fixed to 25 mm x 25mm x 6mm MS angle iron 450 mm long embedded in PCC 1:3:6 type CI using 20 mm graded stone aggregate and including two coats of blue colour synthetic enamel paint over a coat of zinc chrome primer on exposed steel surface all as specified and as directed.

R D Bansal

M/S N.K BUILDERS

JCC ENGINEERS PRIVATE LIMITED

kailu construction co

SAGGI ELECTRIC COMPANY

Intrernational Engineers

TRIVENI CONSTRUCTIONS

M/S JIWAN KUMAR MITTAL