Northeast Frontier Railway Tender

Supply , installation , testing and commissioning of steel structure (made of ISMB steel , steel grade: FE-415) with a minimum of 5 meter ground clearance, painted with two coat of Red 4 Oxide paint and two coats of aluminium paint ) including erection of columns , thrust and all other required civil work/ mechanical work of foundation for mounting of solar panels, and any other items or accessories such as galvanized nuts and bolts, weather proof gasket etc required for successful commissioning of power plant on Single Responsibility basis as per instructions given by Railway Site Engineer.

Supply, erection of earthing set by 50 mm dia. GI pipe 3 Mts. Long including 5 construction of earth pit with cover, 50x6 mm GI strip should be welded with the earth pipe and earth continuity by (25x3)mm GI strip, nuts & bolts etc. as per direction at site and to be constructed as per DRG No: PCEE/ELG/DRG/2024/1 Dated 30.09.2024

Supply and wiring of main line surface wiring though casing capping by 4 x 16 sq. mm. 6 SC PVC insulated unsheathed and multi stranded FRLS Copper Cable confirming to IS 694/1990 through suitable size of casing capping with 1sq. mm unsheathed copper cable as earth continuity wire.

Supply and wiring of Sub-main line by 2x10 sq. mm. PVC insulated unsheathed and multi-stranded FRLS Copper Cable confirming to IS 694/1990 through suitable size of PVC casing capping with earth continuity by copper wire of 1 sq. mm.

Cost of 2.5 mtr minimum height elevated hot dipped galvanized iron Module Mounted Structure for mounting of 9 nos. solar panel with slope facing toward south as per drawing and technical specification attached.

Supply and erection of grey colour 4 Way VTPN Distribution Board double door metal, having 1 No. 100 Amps, 25kA, 4P MCCB Thermal released based & 06 Nos. 32 amps. DP , MCB, 10KA, 9 C-curve; including internal connection of suitable copper cable/ strip to be provided as per direction of site Engineer in-charge of Railway. (Breaking capacity of all MCCB's should be Ics=100% Icu with adjustable magnetic settings and MCCB's shall have a rated service voltage up to 690V and rated impulse withstand voltage shall not be lesser than 8 KV)

Supply, installation, commissioning of outdoor type compact Sub-station (CSS) consisting 250 KVA 0.433/11 KV Dry type step up transformer; OFF LOAD Tap changer OCTC, 10 Tapping= +5% to -5% @ 2.5% in HV side, Air Natural cooling; Gas insulated Ring Main Unit FR1- 11, 12Kv, 21kA; 1 Load Break Switch and 1 Vacuum Circuit Breaker; LT panel consisting fixed manual type incomer Air Circuit Breaker (ACB) with microprocessor based release for over current, short circuit and earth fault protection as incomer cum out going including necessary HT, LT and control cabling works, internal earthing connections by GI strips etc. as per instructions given by Railway Site Engineer.

Supply and construction of foundation pad with suitable ramp and fixing of suitable channel on the top of the bed for installation of transformer by CC foundation in ratio 1:2:4 by cement, sand and chips of size 19 mm and down as required at site consulting with the site Engineer.

Excavation of cable trench below the GL with laying of armored cable and refilling the 12 same by supply of Brick, Sand and Soil after digging the earth as per direction of Engineer at site & connection of armored Cable by supply and fixing of crimping lugs etc. as per drawing No PCEE/ELG/DRG/2024/2 dated 04.10.2024.

Supply & commissioning of 110 (OD) mm diameter Double wall corrugated PN-6.0 Kgf/cm2 HDPE pipe partly through over ground & partly through underground including provision of necessary socket etc. as per direction of site engineer incharge of Railway.

Provision of HDT machine for horizontal boring in outside of the Road/Railway track 14 Embankment at a minimum distance of 6 Mts. from the embankment GL and depth of 2 Mts. Below from G.L. with preparation of site for boring by placing of pipes for electric cable protection through contractors own arrangement for 200 mm diameter hole as per direction of site Engineer.

Supply, laying, fitting, fixing of CI spun pipe 200 mm diameter heavy duty for protection of cable under track crossing/under the road.

Supply, installation, testing & commissioning of 12 KV, 630 Amps, STC 21KA/3 sec, Outdoor type (IP54) with tilted roof, extensible, SF6 gas insulated floor mounted compact switchgear with copper bus bars (Electrolytic grade copper). The breaker mechanism should be spring- 16 mechanism for increased reliability & ruggedness. Each breaker vertical should have individual cable box with earthing provision for earthing of the armoured cable. A copper earthing bus should run all across the switchboard. The coupling should be at the top of RMU through bolted connection to take care of foundation level tolerances & seismic disturbances & sleeved bus bars covered with insulating boots. All live parts, bus bars, VCB will be enclosed in robotically welded 2 MM thick non ferrite, non- magnetic stainless steel tank, filled with SF6 at 1.4 bar with ingress protection class of IP 67. Leakage rate less than 0.1% per annum and tested for internal arc compliancy 21 KA/1 sec AFLR as per latest IEC 62271-200. Offered Compact switchgear should have Manometer for display of internal gas pressure & should also provide option for SF6 gas refilling at site. The separate NRV should be provided than (In the event of gas leakage). Each VCB shall have push buttons to operate & "Live cable" LED Indicators thru Capacitor Voltage Dividers mounted on the bushings. The cable boxes should be Arc Proof with 21kA for 1 sec AFLR doors interlocked with respective Earthing switches. Each VCB (except Bus Coupler) shall be equipped with Digital MFM with 485 port to measure Amps, Volts, Frequency, PF,KWH,KVAR etc& 3O/C+1E/F self-powered numerical protection relay with low and high set for over current and earth fault. Relay shall be placed on the facia with the suitable back lit LCD display for the maximum loaded phase current also. Relay shall record minimum 5 fault records with time stamping. Offered relay should provide in built feature of inrush current blocking & an internal battery for maintaining the LCD display. The switchgear shall have built-in programming logic using reputed make PLC (ACS500/equiv.) For automatic changeover between two motorized incomer VCB and shall derive voltage reference from incoming supply in respective incomer. PLC shall also be wired to all VCBs to monitor open/close status. The unit shall include the following with all necessary standard fitting required at site:(a) 02 Nos. 12KV, 630Amp 21kA/3sec, 3 way, Non Extensible, Motorized, Outdoor type IP54 SF6 Gas insulated VCB consisting of Two Nos. as incomer and Four Nos. for outgoing feeder having STC capacity 21kA for 03 Sec with Copper Bus Bar and Copper Earth Bar fitted with fixed type Voltage indicator Device. Having Resin cast ring core type CTs 200/1A for incomer & 100/1A for outgoing, 2.5VA, 5P10-2 sets for protection & 100/1, 2.5 VA, ACC Class 1.0 (b) Four No. 12KV,630 Amp, 21kA for 3 Sec air insulated metering module for outgoing unit with three single pole voltage transformer 11KV/3/110V/3,25 VA, Class 1.0 with HT fuses in the primary and MCB on the secondary side with removable front door with locking arrangement to avoid unauthorized access. Programmable logic controller for built-in auto changeover logic, Digital Voltmeter with voltmeter selector switch, space heater with thermostat & RYB phase indication.CC foundation base and all other necessary arrangement required as per site requirement for installation of the RMU panel to be done by the firm as per direction of Railway Site Engineer.

Supply, Installation, Testing and Commissioning of Busbar Chamber System with enclosure 200 A Rating Four Pole 4 way type conforming to IS:8623 and IS:2147 with latest version 17 busbar layout stack layer type short circuit Withstand capacity 35 KA Degree of protection IP 31 fabricated with sheet steel (CRCA) 1.6 mm thickness and epoxy powder coated, bus bar section made of ETP grade copper dull tin plated with DMC support, Neutral bus bar fully rated, top and bottom end plate detachable suitable for 440 V 50 HZ AC Supply complete in all respect.

Tree trimming to maintain a minimum clearance from OH Line. One big branch consisting minimum of 5 small sub branches as per direction at site Engineer in - charge of Railway.

Design, supply, installation, testing and commissioning of outdoor feeder pillar 19 consisting of 01 No. Microprocessor based 400 Amps MCCB 4P 36KA, along with suitable enclosure outdoor type conforming to IP-65. (Breaking capacity of all MCCB's should be Ics=100% Icu with adjustable magnetic settings and MCCB's shall have a rated service voltage up to 690V and rated impulse withstand voltage shall not be lesser than 8 KV)

Carrying, Laying, commissioning of various cable size (armoured 4 core 120sqmm , 20 120sq mm single core etc) , partly along the pole and partly through ground in cable trench with suitable fixing arrangement. Loading, unloading & carrying of cable to actual work site by contractor own arrangement as per instruction of Engineer in-charge at site. (cable will be supplied by Railway).

Construction of 2 pole structure by supply, erection, fixing of the following MS channel and angle clamp with pole by 50 x 5 mm MS flat with 50x16 mm diameter bolt and nut including 21 making of hole by drill as per requirement of site (i)MS Channel (100 x 50 x 50 x 5) mm x 2200 mm=1 No. conductor bracket. (ii) MS Angle (50x50x6) mm x 2200mm=2 nos. bracing (iii)MS Channel (75 x 40 x 40 x 4.8) mm x 2200mm= 1No. guard wire (iv)MS Angle (50x50x6) mm x3200mm=2 nos. cross bracing

Supply, fixing, testing and commissioning of 11 KV GO switch 400 Amps complete withoperating handle and fixing of necessary MS channel. (1 set consisting of 3 pieces) as per direction at site Engineer in - charge of Railway.

Supply, fixing, testing and commissioning of 11 KV DO switch 400 Amps complete with paper insulated barred fuse and fixing of necessary MS channel. (1 set consisting of 3 pieces) as per direction at site Engineer in - charge of Railway.

Description: Supply, erection and commissioning of GI tubular pole 9.5 Mts. long type - 410 SP -36 with step length 5.0-2.25-2.25 Mts. section diameter 139.7 x 114.3x88.9 mm sectional 24 thickness 5.40 x 4.50x3.25 mm as per IS 2713 of 1980 including suitable size of base plate and cap on top including Supply and construction of CC foundation work in ratio 1:3:6 by cement sand and chips of size 19 mm & down. The size of the block will be 30cmx30 cm and length 15cm below the bottom of GI tubular pole under GL to 30cm above GL .

Supply and muffing of pole by construction of CC foundation in ratio 1:2:4 by cement Sand and chips of size 19 mm & down. The CC block will be 30cm x30cm from bottom of the pole up to 30 cm above the GL.