NIT for ALPS SPD BIDAR site 1

Amount

SH-I ALPS & SPD

Supply of Advanced Lightning Protection System (ESE) Early Streamer Emission technology , made of Advanced Lightning Rod with Stainless Steel body, working on the principle of (ESE) Early Streamer Emission technology, having a coverage radius of 42 Mtrs at level 1 when mounted at a height of 4.5 Mtrs, Stainless steel body (304L), with Side Flash Capture Head (SFCH) to capture side Flashes, fully self driven, no external power supply, capacitance: 56 pF, CPRI tested for 40 kA (8/20 μS) for five positive and five negative impulse, coupler internal dia for connection 25.4 mm, device total length: 660 mm, main Rod melting point: 1450°, Main Rod Internal Resistance 0.32mΏ, device weight: 4.8 kgs. Complying to UNE 21186-96, Complying & Tested to NFC 17 102 & 200 KVA. (Make:M/s Ashlok, Indelec, Errico, ABB)

Supply of ASM 45 of Length 4.5 Mtr , with SLPR Accessories Box.& master coupler (Make:Ashlok, Indelec,Errico,ABB)

Supply of Lightning Impluse Strike Counter - CPRI tested (Digital) (Make:Ashlok, Indelec,Errico,ABB)

Supply of Down conductor made of Copper cable. Minimum cross sectional area of 1x 70mm² to withstand 250kA lightning current . Rate shall include required mounting clamps.

Installation charges for ESE Lightning Rod with all accessories as detailed (Item No 1 to 4) Installation of Mounting Structure / Strike counter,Installation of Lightning Rod, Laying of Down conductor for 15 Mtrs., Connecting to Earth Electrodes.Digging, Auguring & Installation of earth pit for lightning protection.

Supplying and installation of Copper-bonded Earthing Electrode with minimum copper bonding of 250micron. The electrode shall be duly tested and certified by CPRI (Central Power Research Institute), Govt of India. Brass Rod-to-Conductor connectors should also be supplied for earth strip connection. To ensure the moisture content and electrical conductivity, carbon based carbofill compound shall be used as a backfill compound.The chemical backfill compound shall be tested & certifed by any approved & accredited laboratory in India i/c Also include Poly Plastic Earthpit Chamber Cover Heavy Duty (5 ton Capacity ) chamber etc., complete . System shall be in full compliance with IS:3043 Earthing Standards (Make:Ashlok, Indelec,Errico,ABB) (a) 3 Mtrs Copper bonded rod 17.2mm- 3Nos, (b) Ground enhancing compound - 25kgs 2 bags, (c) Rod to conductor connector, (d) Poly Plastic Earthpit Chamber

SITC of Surge protection devices with following specifications. SPDs Shall comprise of Encapsulated (protected against ionized plasma blow outs) Spark Gap type coordinated Lightening & Surge Protection. The Coordinated Stage I & Stage II protective Device i) Must be KEMA or VDE Verified ii) Protection shall be designed in TT Configuration. iii) Stage I Protection:- a) This Protection against LEMP and high surges will be providedat the distribution panel provided at the Mains supply Panels.It should be complaint with the IEC-62305 and 60364-5-53 for the following. Stage I & Stage II SPDs must be from the same manufacturer and housed in enclosure supplied by the manufacturer depending on the type of SPDs ( IP 65 Protection) current. I) Between Neutral & the three phases: ≥Iimp:25 kA, 10/350 µs for each phase. II) Between Neutral & PE:≥ Iimp:100 kA, 10/350 µs. III) Iimp: Value of lightening impulse current: 10/350 µs. III) Iimp: Value of lightening impulse current: 10/350 µs. V] Rated value of stage arrestor: Not less than 255 V. VI] Arrestor between line & neutral should withstand voltage up to 320V for duration specified. VII] Enclosure & mounting Arrangement depending upon the type of SPD. VIII) SPD status indication for both states. Protective Protection:- I] Stage I ≤ 2.5K , II] Coordinated Stage I & II ≤ 1.5 kV. Stage II Protection :- This protection against low voltage surges will be provided at the powerplant(Supply) level. It will be equipped with thermal disconnection & potential free contactfor arrestor between live and neutral & earth.It should becomplaint with the IEC-62305 and 60364-5-53 for the following current : I] Between neutral & the Three Phases: ≥ Iimp:10kA,8/20 μs for each phase. II] Between Neutral & PE: ≥ In 20 kA,8/20 μs,In value of nominal discharge current 8/20 μs. III] Voltage rating of MOV ≥ 320 V. IV]SPD Status Indication-As per IEC Norms shall provide indication for both states. Response Time :- a) Stage I Protection device ≤ 100 nanoseconds. b) Stage II Protection device ≤ 25 nanoseconds. Coordination between Two stages; The two stages must be tested to work in tandem and incoordination to give protection against lightening & surge and also voltage protection up to 1.5 kV is ensured for entire site. The test certification carried out by the testing agency in the same lab for both the stages as per IEC61643 and 62305-4 must be enclosed. Cross section Area of conductors( Interconnections not included in the scope, paid separately). a) Stage I Protection device > 6 mm2. b) Stage II Protection device > 3 mm2. Indication on lightening arrestors as per IEC standards must be provided. All the arrestor(Line to neutral and neutral to earth shall have individual indication to know the status of individual module. There shall be common Potential free contact for all. Failure of Stage II protective device must create and extend both visual & audio alarm. The arrestor should be approved by BSNL QA Wing. The potential free contact shall be available for the failure or removal of this protection from base unit. Optional Requirement: The combined arrestor shall be tested for energy coordination with320 V(or less) rated MOV so that the let through energy do not exceed 151 joules. Certification from the original manufacturer with test report must be provided. Product literature highlighting the specific sub components being used at each stages along with installation instructions is to be provided. Certificate of conformity with ISO 62305 standards is to be enclosed. (M/s OBO Bettermann , Model: Stage 1: MCD 125-B NPE,320V & stage II, Model No: V20-C/3+NPE,320V ,M/s DHEN / / SS make)

Supplying and drawing following sizes of FR PVC insulated copper conductor, single core cable in the existing surface/ recessed steel/ PVC conduit as required.( Polycab/Havells or similar superior make with ISI mark). a)4X10 sqmm

Supplying and making end termination at source and load terminals to the following sizes of un armoured copper cable i/c supplying and crymping copper lugs testing etc, complete as required. (A) 4X10 sqmm

Supplying and fixing of following size UPVC trunk box on the surface of wall/floor/ceiling/on the existing cable tray with necessary connected accessories like bends, elbows, tee, etc, as required. ( Make;-Honeywell/MDS/Legrand/MK or SS make) a) 50mmX50mm

SITC of Chemical Earthing made of MS pipe with Galvanization (80-100Microns), outer dia is 76 mm with a wall thickness of 1.6 mm, inner dia is 42 mm with a wall thickness of 2.6 mm overall length is 3000mm, external corrosion resistant crystalline conductive compound, compound is filled and compacted in the cavity within the pipes to enhance the electrodes performance., confirms to IS:3043-1987 i.e, code of practice for earthing all inner annular space filled with highly conductive and non corrosive nature crystalline material, along with electrode moisture booster compound of 2X25Kgs bags to fill sourround the pipe at the time of installation. ( Moisture booster having its property of moisture retention, conduction and non corrosive nature). Also includes poly plastic earthpit chamber cover heavy duty ( 5 Ton capacity) chamber etc. complete (M/s.ELTECH/ ASHLOK/ Potential/ Connect Earth make)

Providing and fixing 25mmX5mm GI strip in 40 mm dia B class G I pipe from earth electrode including connection with G I nut and bolts, spring washer, excavation and refilling etc., as required.

Providing and fixing 25mmX5mm GI strip on surface or in recess for connection etc., as required.

Supplying and fixing 2 Nos GI strip of size 50mmX6 mmX300mm length on the surface of wall as busbar including providing suitable porcelain insulator support at the back, drilling holes, nut bolts etc., as required.

Supplying and laying PVC pipe alongwith accessories on existing tray/surface of wall i/c cutting wall and making good the same in case of recessed pipe etc., as required( ISI Marked). A)25mm dia PVC pipe

marvel