This document provides an overview of DMRC's electrical safety training topics and JMV's electrical safety products and services. It discusses JMV's expertise in earthing materials like copper clad steel, jointing techniques, testing facilities, and software for grid designing. It also outlines their lightning protection solutions and surge protection devices to safeguard equipment from transients. JMV aims to be a one-stop provider of high-quality earthing and lightning protection systems for various projects while complying with all applicable standards.

2. WELCOME TO DMRC FOR ELECTRICAL SAFETY
Topics Offered by DMRC
• Merits and Demerits of Copper Clad Steel with reference to GI/MS & Cu Earthing Material
• Cost Comparison with other Earthing Materials
• Life of the material, Corrosion Rate etc.
• Other Technical Advantages
• Jointing Techniques
• Special Consideration during Erection Stage
• Reference and Performance Record

3. 1. We are the India’s leading Manufacturers
With an ability to Manufacture every possible customization in the field of Earthing, Lightning Protection & Surge
Protection Systems
3. We are the Solution Provider for Earthing & Lightning Protection as per NBC 2016, Following all National
& International Standard
We are also indulge in project designing using International software i.e. CDEGS
OUR SERVICES : ONE STOP SOLUTION PROVIDER
1
2. We are the Component Designers
Designing & manufacturing components as per design requirement Metal , Plastic and Other Special
5. Site Survey of Earthing ,Lightning and Surge Protection with Report
Well skilled Project & Service Team, we are offering Site Survey, Installation, Testing & Commissioning Services.
4. Having World class In-house Testing Facility
We serve with established testing Lightning Protection System Components & Surge Protection Devices with the
Lightning Voltage Impulse Test capacity 550kV & Current Impulse generator capacity of 200 kA at 10/350 micro-sec &
8/20 micro-sec.

4. 1
JMV with Metro High Speed Rails and Bullet Trains
JMV is pleased to provide Earthing and Bonding Solutions with Exothermic Welding for Metro Rail & Complete Lightning
Protection Solution with an Earth Termination System and Surge Protection Devices.

5. ▪ Soil Resistivity Analysis & Soil Structure Interpretation
▪ Grounding Analysis: Arbitrary Soil Structures; Any
Frequency & Transients
▪ Load, fault & transient current distribution (in neutrals,
shields etc.)
▪ Cathodic Protection Analysis of Complex Buried
Networks
▪ Inductive, Conductive and capacitive interference in
shared corridor
▪ Line constants for overhead and buried conductors or
complex pipe-enclosed cable arrangements
▪ Frequency & Time Domain Analysis of Electromagnetic
Fields generated by Energized Conductor Networks
Capabilities of CDEGS

6. Grid Designing Requirement & Parameters
-In problematic soil conditions with High Soil Resistivity, multiple rod method Earth Grid/ Mesh or
Lattice Pattern Structure is highly recommended for achieving desired earth resistance.
- Earth Grid is a combination of Vertical & Horizontal Conductors with Exothermic Welded Joints/
Connection by considering MULTILAYER SOIL MODELING using CDEGS SOFTWARE
- Complying standard IEEE 80.
- Purpose of grid is to provide Safe Fault Current dissipation with any damage to equipment or the
human.
- Grid calculation criteria is to get Allowable Step & Touch Voltage, GPR & to satisfy desired earth
resistance value.

7. 1
• For desired results and long life span, people prefer
pure copper or in fact GI sometimes; beyond this truth
that these material invites theft and be sold for
recycling purposes.
• To get positive results, copper clad steel – a theft-
proof solution is availed for the protection of
personnel and property, that is undoubtedly
economical in cost and offer longer life span for
outdoor purposes or when buried in ground.
Facts about Earthing Material
• Copper Clad Aluminium is also preferred due to its
anti-corrosive nature and theft-resistant characteristics;
the product have zero scrap value in the market. It is
successfully used for outdoor grounding purposes.

8. Why to Choose Copper Bonded Rod Over GI/MS or Pure Copper?
1
Quality:
- No standard specifications are given for GI/MS. Only provisions for galvanization are available but market corruption
has abolished those specifications. One get only 20-30 micron coating in place of 70-80 micron coating.
- Use of Copper Bonded Material is recommended in IEEE 80, IS 3043 and NBC 2016.
Cost effective:
- GI/MS Products use low grade of steel & does not support equipment’s life due to its corrosive nature. Moreover,
they show significant deterioration while pure copper invites theft.
- Copper bonded rod is virtually free of corrosion and provide 40+ year life.
Installation Time :
- Complex transportation of GI Strips. Installation time and practices are easier.
- Installation of Copper Clad Steel Conductor is easier and time-saver.
NOTE – On comparing performances of strips and round conductors, round conductors have been recommended by most
of the national and international standards as earthing & lightning components.

9. Maintenance Free Earthing System as Per IS 3043, IEEE 80, NBC 2016, IEC 62561 Series
1. Earth Pits : Recommendation of Copper Bonded
Rods in place of GI Electrodes/ MS pipe to get
the better life of earth mats.
2. Horizontal conductors: Recommending Copper
coated steel conductor in place of GI Strips.
3. Use quality earth enhancement material for
better earth resistance value.
4. Go for permanent jointing solution i.e.
Exothermic welding systems

10. • An earthing system - inclusive of
low carbon, high steel molecularly
bonded rod with copper coating of
min. 250 microns.
• UL listed, solid rod technology
complying IEC 62561-2 and tested
by CPRI at fault withstand capacity
of 25 KA/50KA/65KA.
How Copper Bonded Rods are beneficial in any Earthing System?
Fully CORRODED GI Solid
Rod after 10 years
Results of National Electrical Grounding Research Project (NEGRP)
40+ year life of copper bonded rods, typically 4 times that of
galvanized ground rod.

11. ✓ It cannot be re-cycled or re-consumed.
✓ Since recovery of copper is not possible, thus zero scrap value.
✓ Theft deterrent earthing material.
✓ Steel & copper cannot be separated by any melting process.
✓ Low carbon solid steel core, molecularly bonded 99.99% pure copper coating of min. 250 microns.
✓ Cannot be removed from the grounding system using normal copper cutting hand tools.
How utilization of Copper Bonded Rod is beneficial in Earthing?

12. IEEE 80: 2013
High Soil Resistivity Issues to Achieve Desired Earth Resistance

13. 1
IS 3043:2018

14. 1
IS 3043:2018
NBC:2016

15. Earth Enhancement Material
Solution for high soil resistivity
to get better earth resistance values
• Low-resistance, non-corrosive, carbon-based
superior conductive material
• Conforms & Tested as per IEC 62561-7
• Improves grounding effectiveness, especially in
areas of poor conductivity
• Maintenance free solution
• Having a resistivity less than 0.12 Ohm-m.
• Tested for Corrosion, leaching, sulfur content, and
Resistivity and other environmental regulations from
NABL accredited Labs as per IEC 62561-7.
• Does not contain any hazardous component
complying RoHS.• Remarkable conductivity even in the dry form
• Does not dissolve, decompose or leach out with time
1
Are you buying
a right
product?

16. Quality of Earth Enhancement Material
A Good Quality Earth Enhancement Compound will be 95% Carbon Based and will be Conductive in Dry Form also.
Whereas a bad quality Compound will be made of boiler ash and will not be conductive in dry form.

17. 1
80% REASON OF FAILURE OF SYSTEM IS DUE TO LOSE CONTACT
EARTHING JOINT FAILURE

18. Disadvantage of Conventional Jointing Solution
1
• For earthing connections & electrical jointing,
mechanical jointing system still prevails!
• I.e. Nut & Bolt, welding, clamping, brazing etc.
• Contact points of connections suffer voids & gaps
which results in corrosion, rust and oxide and
thus, early deterioration.
• Resistance of mechanical connections increases
with time and this alters the conductive
properties of connections.
• Just 8-20% contact surface area.
• Gets corrode over the period of time due to
atmospheric corrosion.

19. Main earthing wire connections must:
• Be mechanically & electrically sound;
• Protected against damage, corrosion and vibration;
• Possess 100% contact surface area;
• Be secured at the earth electrode;
EXOTHERMIC WELDING- Permanent Jointing Solution as per IEEE 837

20. 1
Comparison Between GI Strip & Copper Clad Steel Conductor

21. External Lightning Protection
System
ENSURING PROTECTION AGAINST THE LOSS
OF HUMAN LIFE & PHYSICAL DAMAGE
An external LPS consists of:
1. Air- Termination system to
intercept a lightning flash to the
structure
2. Down- conductor to conducts the
lightning current safely towards
earth
3. Earth-termination system to
disperse the lightning current into
the earth

22. Risk Assessment As Per National Building Code-2016
Pg 87,
Table 5

23. Air Termination System
Different Technical Parameters to install
Lightning Protection System
NBC adopted IS/IEC
62305 code.
Pg-87, NBC
2016

24. Air- Termination System Design
ROLLING SPHERE
PROTECTION ANGLE
+ MESH METHOD

25. ✓ Down-conductors should preferably be
connected to junctions of air termination
network and routed vertically to junctions of
the earth termination system .
Pg-94, NBC
2016
Pg-95, NBC
2016
Down Conductor Lightning Protection
System Components
Earth Termination System

26. Lightning Protection As Per NBC 2016 Complying IS/IEC 62305
Protection Angle method using vertical rod is the best suited method for up to 25 kW projects.
Later, shadow as well as installation will be an issue.

27. • Transients generated due to LEMP (Lightning Electromagnetic Impulse) that appears as over-voltage and/or over-
current.
• Surges can originate out of the structure/ within the structure created by lightning flashes striking incoming lines
or nearby ground and then transmitted to electrical & electronic systems via these lines.
• Surges can also originate internally due to switching operations.
• Over-voltages are of two types:
➢ Steady state : Having a waveform duration in seconds for which Protection Devices like Fuses, MCB, RCCB etc.
are used.
➢ Transients : Having a waveform in Nano-seconds & Micro-seconds for which Class B, Class C and Class D Surge
Protection Devices
What is a surge?
10/350
microseconds
8/20
microseconds
1.2/50
microseconds

28. 1
Because JMV care about
Railway’s electrical and
electronic equipments..
Complete Solution
with us.. • With Earthing & Lightning
Protection Solutions,
Railways require additional
protection of Surge
Protection Devices for
Railways, Surge Analyzer and
Surge Counter, etc.

29. • JMV builds INDIA’S 1ST RESEARCH
CENTRE for Lightning Protection
System Components & Surge
Protection Devices.
• Current Impulse generator of
capacity 200 kA at waveform 10/350
micro-sec & 8/20 micro-sec.
• And we are under process of NABL
accreditation (National Accreditation
Board for Testing and Calibration
Laboratories)

30. 1
Surge Analyzer Surge Counter

31. Cable Duct
Product features –
Cable ducts are used for the placement and maintenance of cables and pipes for protection against external influences
• Polyolefin injection moulded cable duct is ideal for laying any type of cables.
• Connecting to this finest technology ensures to stay stable in spite of the cable duct being weightless and offers
remarkable performance.
• Key and slot type joint for stable duct connection & disconnection.
• Inspection, fault traceability, repairs, jointing, replacement or additions of cables can be done with ease. This is done with
least time for closing/ shutdown of the system.
• The sheath of cable is not likely to get damaged as the cables are pulled and not lowered.

32. Mauritius Metro– Challenges & Solution
❑ Mauritius Metro- Earthing Requirement
Challenge- Very High soil resistivity 500
Ohm-m and space constraint issues (25 x15
mtrs)
Solution- JMV’s experts done their value
engineering and freeze an earthing solution
for all the sites of Mauritius metro.
Achievement- Win the project with L&T
❑ Mauritius Metro- Exothermic Requirement
Challenge- Exothermic Welding required for
400 sq mm cable
Being the only Indian vendor in this
technology, we are preparing the solution for
L&T.

33. JMV IS THANKFUL FOR AN OPPORTUNITY TO SHOWCASE
OUR CONTRIBUTION IN ELECTRICAL SAFETY