Presentation Merging with Technologies July 2017 Safe Practice in Earthing and Protection For Railway Infra and Equipments(RAILTEL) First Bullet Train Project Metro Rail Project DFCC Project Indian Rail Port Ltd India Rail Station Development Corporation Ltd India Rail Ware House Corporation Ltd Kalindi Rail Corporation Ltd Rail Vikas Nigam Ltd IRCON Ltd RITES LTD

Safety Main It Should be Remain(Protect your Equipment for Surge

• Telepresence Services • RailTel’s Telepresence Service is an end-to-end, Full high-definition (FHD-1080p) videoconferencing service that gives users a virtual, face-to-face meeting experience. • Data Center Services • Great hosti g ea s ha i g po er, co trol a d peace of i d. A d that’s ho RailTel`s customers feel when they trust our certified NOC team to manage their hosting needs and challenges. • Rack and Space Collocation • RailTel facilitates co-location for equipment of telecom operators at its PoPs (Point of Presence) mostly located at Railway stations. Railway route & buildings being in heart of the city provide for high ARPU sites with maximum population coverage. RailTel also facilitates roof top BTS sites & in building solution at Railway stations & other Railway buildings.
• Wireless communications providers can now reduce capital expenditures and increase coverage by teaming up with RailTel. Our existing nationwide network of MW towers and other structures offers cellular, high speed data and other wireless communications companies. • RailTel provides Tower colocation facilities to Telecom operators for mobile BTS •

• Equipment – SDH (Synchronous Digital Hierarchy) – DWDM (Dense Wave Digital Multiplexing) – IP/MPLS (Multi Protocol Label Switching) OPGW 24 F OPGW
OPGW 24 F OPGW POWERGRID S/S SDH
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OADE U/G OFC 24 F City PoP
SDH Access Eqpt.
Tower Approach Cable Repeater Tower with JB Shelter DG set Intracity Ring N/W
JMV LPS LTD
Tower POWERGRID S/S SDH
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OADE U/G OFC 24 F
SDH Access Eqpt.
City PoP Intracity
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Ring N/W

Managed Services WiFi Services IP Transit Services Data Center Services Others Dark Fibre on UGOFC Co-Location Services PoP Infrastructure Tower Space Leasing JMV LPS LTD Infrastructure Services Telecom Services Offered SDH/DWDM N X E1/E3/DS3/STM-1/STM-4/STM-16/STM-64/10G /100G Capacity Scalable from present capacity of 400Gbps to Terabit Capacity Multiple Self – resilient backbone rings Internet Services Internet Leased Line 2 Mbps – 1Gbps capacity links Internet Security Measures Three tier architecture MPLS Based VPN Dual home connectivity in Backbone to avoid Single point of failure Resilient & Secure Network Design to cater to real time critical Power Transmission applications 2 Mb – 10 G Layer-2 & Layer-3 VPN ports Configurable Class of Service to suit data criticality Network Scalability to 500 Gbps in core and 10Gbps/port 14

• National Optical Fibre Network (NOFN) project – a Govt. of India initiative is world largest rural broad band connectivity project through optical fiber. • Under NOFN project, around 6600 blocks of India in around 650 districts shall be connected to 2,50,000 Gram Panchayats of respective blocks by utilising existing fibre of BSNL, RAILTEL and POWERGRID. Incremental fibre shall be laid wherever required • Approx. 6 Lakh Km new incremental fiber to be laid. • Minimum 100Mbps bandwidth at each Gram Panchayat • BBNL (Bharat Broadband Network Limited)- a SPV has been set up for establishment, management and Operation of NOFN project. • Initial cost of project was around Rs. 20,000 Cr funded by USOF (DOT ). • Work allocation: BSNL (70%), RAILTEL (15%), POWERGRID (15%) JMV LPS LTD 15
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project (36000 GPs)
• Survey work had been completed and approved by BBNL for entire scope of • Under Phase-I of project 9510 GPs are to be connected by laying around 22,000 Km of Under Ground Fiber in total 462 blocks in Telengana, Odisha, Jharkhand & HP. • Contracts for fiber laying has been issued to executing agencies to connect 7019 GPs in 341blocks. Balance 2491 GPs have been included in scope of phase-1 work recently. Accordingly, tendering activities for award of T&L contracts are under process. • As on date incremental Fiber laying has been completed for 4562 GPs after laying OFC of 10723Km. • Trenching and ducting for approximately 14,966 Km have been completed till date which includes 2541Km of T&L work in AP. JMV LPS LTD 16
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1) Safety for Human life/ Building/Equipments:
To save human life from danger of electrical shock or death by blowing a fuse i.e. To provide an alternative path for the fault current to flow so that it will not endanger the user To protect buildings, machinery & appliances under fault conditions. To ensure that all exposed conductive parts do not reach a dangerous potential. To provide safe path to dissipate lightning and short circuit currents. To provide stable platform for operation of sensitive electronic equipments i.e. To maintain the voltage at any part of an electrical system at a known value so as to prevent over current or excessive voltage on the appliances or equipment .
(2) Over voltage protection:
Lightning, line surges or unintentional contact with higher voltage lines can cause dangerously high voltages to the electrical distribution system. Earthing provides an alternative path around the electrical system to minimize damages in the System.
(3) Voltage stabilization:
There are many sources of electricity. Every transformer can be considered a separate source. If there were not a common reference point for all these voltage sources it would be extremely difficult to calculate their relationships to each other. The earth is the most omnipresent conductive surface, and so it was adopted in the very beginnings of electrical distribution systems as a nearly universal standard for all electric systems.

Factors affecting on Earth resistivity: (1) Soil Resistivity:
It is the resistance of soil to the passage of electric current. The earth resistance value (ohmic value) of an earth pit depends on soil resistivity. It is the resistance of the soil to the passage of electric current. It varies from soil to soil. It depends on the physical composition of the soil, moisture, dissolved salts, grain size and distribution, seasonal variation, current magnitude etc. In depends on the composition of soil, Moisture content, Dissolved salts, grain size and its distribution, seasonal variation, current magnitude.
(2) Soil Condition:
Different soil conditions give different soil resistivity. Most of the soils are very poor conductors of electricity when they are completely dry. Soil resistivity is measured in ohm-meters or ohm cm. Soil plays a significant role in determining the performance of Electrode. Soil with low resistivity is highly corrosive. If soil is dry then soil resistivity value will be very high. If soil resistivity is high, earth resistance of electrode will also be high.
(3) Moisture:
Moisture has a great influence on resistivity value of soil. The resistivity of a soil can be determined by the quantity of water held by the soil and resistivity of the water itself. Conduction of electricity in soil is through water. The resistance drops quickly to a more or less steady minimum value of about 15% moisture. And further increase of moisture level in soil will have little effect on soil resistivity. In many locations water table goes down in dry weather conditions. Therefore, it is essential to pour water in and around the earth pit to maintain moisture in dry weather conditions. Moisture significantly influences soil resistivity

9) Effect of current magnitude:
Soil resistivity in the vicinity of ground electrode may be affected by current flowing from the electrode into the surrounding soil. The thermal characteristics and the moisture content of the soil will determine if a current of a given magnitude and duration will cause significant drying and thus increase the effect of soil resistivity Maintain less than one Ohm Resistance from EARTH PIT conductor to a distance of 15 Meters around the EARTH PIT with another conductor dip on the Earth at least 500 mm deep. Check Voltage between Earth Pit conductors to Neutral of Mains Supply 220V AC 50 Hz it should be less than 2.0 Volts.
Maximum allowable Earth resistance:
Major power station= 0.5 Ohm. Major Sub-stations= 1.0 Ohm Minor Sub-station = 2 Ohm Neutral Bushing. =2 Ohm Service connection = 4 Ohm Medium Voltage Network =2 Ohm L.T.Lightening Arrestor= 4 Ohm L.T.Pole= 5 Ohm H.T.Pole =10 Ohm Tower =20-30 Ohm

Most Efficient JointProcess
It is efficient and superior to all existing surface –to-surface mechanical retention connectors.

What is Exothermic Welding System ? Copper to Bi-Metal and Alumenium Types of Exothermic Joints:
Possible to join any bi metal except aluminum
Exothermic welding is a process of making maintain free highly molecular bonding process is superior in performance connection to any known mechanical or compression-type surface-to-surface contact connector. Exothermic weld connections provide current carrying (fusing) capacity equal to that of the conductor and will not deteriorate with age.  It offers Electrical connections between two or more copper to copper and copper to steel conductors.  Highly portable method as it does not require any external power source or heat source, so it can be done almost anywhere.  It provides strong permanent molecular bond among metallic conductors that cannot loosen and further will not deteriorate with age.  Connection does not corrode with time and it offers permanent conductivity.

An Arcing Fault is the flow of current through the air between phase conductors or phase conductors and neutral or ground. Concentrated radiant energy is released at the point of arcing an a small amount of time resulting in Extremely High Temperature.

Accidents generally happen due to lack of maintenance, lack of Supervision, lack of knowledge, over confidence and negligence. Accidents may also happen due to one or more of the following reasons:   Using improper tools Improper/non usage of protective devices   Lack of proper instructions and supervision Mental/physical condition of the employee  Poor Judgment

Copper Cladded Conductor For Electrical Installation
The Copper Clad Steel Grounding Conductor is made up of steel with the coating of 99.99% pure copper. These conductors/ wires or strands are equipped with the strength of steel with the conductivity and copper with the better corrosion resistance property. The concentric copper cladding is metallurgic ally bonded to a steel core through a continuous, solid cladding process using pressure rolling for primary bonding. The copper cladding thickness remains constant surrounding steel. We use different steel grades for the steel core result in Dead Soft Annealed, High strength and Extra High Strength Characteristics. The Copper Clad Steel Wire yields a composite conductivity of 21%, 30% and 40% IACS, and available in Annealed and Hard drawn. We are delivering products with varied conductivity and tensile strength as per the customer need. Further, the wire can be processed to be silver plated or tinned copper clad steel wire.

Most Efficient JointProcess
It is efficient and superior to all existing surface –to-surface mechanical retention connectors.

What is Exothermic Welding System ? Copper to Bi-Metal and Alumenium Types of Exothermic Joints:
Possible to join any bi metal except aluminum
Exothermic welding is a process of making maintain free highly molecular bonding process is superior in performance connection to any known mechanical or compression-type surface-to-surface contact connector. Exothermic weld connections provide current carrying (fusing) capacity equal to that of the conductor and will not deteriorate with age.  It offers Electrical connections between two or more copper to copper and copper to steel conductors.  Highly portable method as it does not require any external power source or heat source, so it can be done almost anywhere.  It provides strong permanent molecular bond among metallic conductors that cannot loosen and further will not deteriorate with age.  Connection does not corrode with time and it offers permanent conductivity.

Neeraj Saini – 9910398538 Rahul Verma – 9910398535 Manav Chandra - 9910398999 manav@jmv.co.in