Claim not Blame any Body Now Rain is Above to Start and Many Cities of India Witness Lightning which may Cause Death and Loss of Assets (Electrical Equipment's, Data Communication, Control and Instrumentation and Home Gadget. Only we can save Human Lives and Assets while Adopting Protection use of Earthing ,Lightning and Surge Protection. JMV LPS Ltd will ensure to offer Awareness, Design (Earthing and Lightning) Installation Advise for Surge Protection. We require All States Authority Mandatory Documents Release with advisory to Implement also Guidance to Insurance and Bank with Electrical Safety Assessment do not pass any Loan or do Insurance. Awareness programme to Common People how to protect them self from Electrical Shocks and when Lighting Strikes. Safety of Human Lives are prime responsibility and if any Authority or Owner of Premises found Guilty when Accident occur should be book by LAW(Including Contraction and Implementing Agencies) We all has to pay cost for Safety and use Product and Follow Documents Strictly. being a responsible Citizen discharge of duty for Society Should not only load is account of State and Central Govt. We have also perform by our Self. JAGO India JAGO Apni Responsibility se Na Bhago. we will do right and now allow other's to do Wrong.

1. Cloud Strike Lightning is very Danger we can only Minimise Losss Offering Protection Against
Lightning and Awareness India Still People taking Accident very Lightly .
We have to Follow and implement Electrical Instalation and Human Safety by LAW documents
are now very good Convencing Technical and Easy to Adopt.
NBC2016 by BIS& IS782 ,MBBL2019(Manual Building by LAW) Urban Housing, CERC for
Electrical,RDSO by Railways
International IEC62305,IEEE80 ,NFPA780,NFC17-102
On April 16, there were almost 41,000 clouds to ground (CG) lightning strikes all over India,
according to data analysed by the Indian Institute of Tropical Meteorology (IITM), Pune.
The strikes were a result of thunder, dust and hail storms across the country. These were caused
by an intense Western Disturbance (WD), which started affecting the North Western parts of the
country from April 15 onwards.
The cooler winds of the WD interacted with hot and dry air and further infused localised storms
in many regions resulting in extreme weather conditions.
“It is a severe weather system covering a large spatial extent, so much so, that its affect was felt
all the way in Maharashtra. It is the most intense western disturbance reported since January this
year,” M Rajeevan, secretary, Ministry of Earth Sciences
“We do not think it was the strongest WD. Although it was intense but, other factors such as,
high temperatures, induced cyclonic circulation over west Rajasthan and moisture feed from

2. Arabian Sea was responsible for violent dust storms and thunders showers,” Mahesh Palawat,
chief meteorologist at Skymet Weather, a private weather monitoring agency, told Down to
Earth.
According to media reports, 89 people in 11 states have been killed in such storms since the
beginning of April, mainly due to CG lightning strikes. In Rajasthan alone 25 individuals died in
a single day on April 16.
In Madhya Pradesh, over two days, 16 people have reportedly died. Lightning strikes kill more
people in India than any other extreme weather event but they go largely unnoticed as compared
to floods, heat waves and cold waves.
In 2018, over 3,000 people died due to lightning strikes in the country. “The number of deaths
resulting from lightning strikes has increased by 1000 over the past three years,” Sanjay
Srivastava of the Climate Resilient Observing Systems Promotion Council (CROPC) told Down
to Earth.
CROPC is a consortium of various organisations and individuals working on risk reduction due
to extreme weather events, like lightning. “Lightning strikes are on the rise as the frequency and
intensity of storms and cyclones increase as a result of climate change,” added Srivastava.
Last year, Andhra Pradesh 41,000 lightning strikes on a single day in May, according to Earth
Networks, a Maryland-based company which monitors and collects data on lightning strikes
around the world.
These strikes had killed 14 people at the time. The number could have been higher if not for a
public information dissemination system managed by the Andhra Pradesh State Disaster
Management Authority (SDMA) which sent out alerts to people about impending lightning
strikes through phone messages.

3. A network of sensors located around the world by Earth Networks measure radio frequencies
emitted during lightning strikes. This data is combined to produce a time, location, type (cloud-
to-ground or intra-cloud), and peak current using a time-of-arrival technique similar to the
Global Positioning System (GPS).
Whenever electromagnetic activity characteristic of a lightning strike is detected, a local disaster
response team is notified, which sends further alerts. In Andhra, the SDMA sends alerts on a
mobile application — Vajrapath — developed by Kuppam Engineering College students in
Chittoor in collaboration with the Indian Space Research Organisation.
How well is your building protected?(as Per NFC17-102(2011)
IEC62305 , NFPA780, IEEE)
A lightning flash can average 500 KV and currents of about 50 kilo amperes. It lasts
only about 10 to 50 micro seconds. The estimated power per stroke is 10 lakh mega
watts though it lasts only a split second.
Most lightning occurs between the clouds and only about 15 per cent of it reaches the
ground. Tall buildings tend to attract lightning Lightning can cause deaths and injuries
to human beings and severe damage to buildings and structures.
The threat of damage to property and equipment is growing as IT systems,
communication networks and sensitive electronic devices are now being used without
proper protection. The very high current in lightning strikes produces a large amount of
heat. Air is not a good conductor and so during lightning, air becomes super-heated to
temperatures hotter than the surface of the sun. This burst of heat produces an intense
arc of light and waves of thundering sound. When lightning strikes a structure, the very
high current searches for the easiest path like metal pipes, power and communication
wiring, metal railings — all of which are not designed to carry high currents. This
generates heating, melting, fire and smoke.
The safety of a structure and its occupants exposed to lightning is dependent on a
correctly designed and installed lightning protection system. In spite of national and
international standards, damage to property and human beings by lightning still occurs

4. due to lack of understanding or disregard of the principles of lightning protection. The
four basic parts of lightning protection system are
1. Air terminals
2. Down conductors
3. Earth connection and
4. Surge protection.
The function of a lightning protection system is to convey the very high lightning
discharge currents safely to earth through a low resistance path. Air terminals are also
called lightning rods. These are made of copper and fixed on top of the structure.
Typically, these are spaced six meters apart on the edge of the building and 15 meters
on the interior of the roof. Cross connection of air terminals is also done. These air
terminals attract lightning, drawing high voltage currents into the protection system and
away from the structure and its contents. The air terminals are connected to down
conductors of sufficient thickness and low resistance. There should be one down
conductor for every 20 meters of the building perimeter. If the building is above 20
meters high, the spacing should be reduced to 10 meters. The function of a down
conductor is to conduct the lightning strike to earth. These down conductors need to be
direct and vertical with minimum bends and joints. Each down conductor must have a
separate earth connection. The connection is obtained by a copper-clad steel rod of
about 10 ft length and 1/2 inch diameter driven deep into earth pits. The resistance to
earth should be low enough to discharge a large lightning current safely into the earth.
The failure to provide low resistance earthing will cause the lightning protection system
to be ineffective and result in property damage and risk to human life. All components
in a lightning protection system need to be corrosion-proof, large-sized and rigidly
installed.
Lightning can cause surge voltages in power and phone lines, computers, TVs etc.,
despite a lightning protection system. Surge protectors should be used to protect them.
Surge protectors are connected to electrically live parts and to the earth and have non-
linear resistances that offer high resistance when there is no surge and low resistance in
case of surge.

5. The test point may be formed by a bi-metallic connector link.

7. TECHNICAL SPECIFICATIONS FOR LIGHTNING PROTECTION SYSTEMS NFC17-
102
Direct Lightning Strike Protection System using ESE Air terminals
The Direct Lightning strike protection system should be based on advance technology
Early Streamer Emission designed to intercept the lightning by anticipating an upward
leader by corona effect before a lightning strike and safely convey the lightning current
to earth through a known and preferred route.
It shall include components like air termination equipment, Air Terminal
maintenance/function test meter, LCD based advanced Lightning Flash Counter,
mechanical support, down conductor(s), and maintenance free earthing system based
on Chemical earth enhancing compound to reduce the earth resistance and a transient
earth bonding unit.
The design of the components shall be in accordance with ESE standards NFC-17-102
and also proven with Indian conditions and traceable to field research, laboratory
testing, fundamental analysis, and statistical levels of the lightning event.
Essential Requirements for Air Terminal.
Air terminal must be Early Streamer Emission type and comply with international
ESE standards such as NFC-17-102 to provide an umbrella protection against lightning
strikes covering a radial distance.
It should also be tested in a high voltage laboratory for evaluation of gain in
triggering time.
The laboratory test must be in accordance with NFC-17- 102 Appendix-C

8. The callcullattiion off prottecttiion radiius off tthe aiir ttermiinall mustt be based on tthe
Rolllliing Sphere Metthodollogy ((RSM)) as per sttandards..
The air terminal shall be non- radioactive and require no special licensing. The
materials used shall be non-corroding in all weather conditions i.e. rain, thunderstorm,
snow, wind, dry and humid conditions. The air terminal must be totally Auttonomous
ellecttriic deviice collllecttiing tthe energy ffrom tthe ambiientt ellecttriicall ffiielld..
The offered air terminal must work on negative as well as positively polarized
cloud discharges.
The air terminal offered must not be fitted with user replaceable
parts/components such as batteries/transducers/piezo electric cells etc. The operation
of the air terminal must be purely autonomous and do not use batteries or any other
external source of power for its normal operation.
The Air terminal must be capable of handling multiple strokes of lightning
currents and should be maintenance free.
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Specifications
i Type : Early Streamer Emission (ESE)
Lightning Conductor Air Terminal
ii ΔT vallue : 60 µs for protection radius upto 107 meters
50 µs for protection radius upto 95 meters
40 µs for protection radius upto 84 meters
20 µs for protection radius upto 58 meters
iii Material used : Stainless Steel Water Proof Enclosure
iv Level of Protection : Level -III protection (Standard Grade)
v Height of elevation pole : 5 meter above finished roof level
vi Constructional details : Central Pick-up rods, upper and lower series of
electrode sand triggering device housed in a
stainless steel weather proof and non-corroding
Housing
vii Triggering device- type : Electronic triggering device fitted inside the
stainless steel housing.
viii Sensors – type : Lower and upper series sensors arranged around
the central pick-up rod internally connected with
the triggering device for the fast sensing of
atmospheric charge buildup
Down conductor
A good quality ISI mark PVC insulated flexible copper down conductor should be
provided with suitable clamping/saddling to convey the captured energy by the ESE Air
terminal to the grounding system to a maintenance free low impedance earth pit
charged with chemical earth enhancing compound.
i. Two down conductors must be used if the height of the installation is more than
28 meters or the horizontal run of the down conductor is more than the vertical
height.
ii Down conductors should be provided for each Air Termination as per ESE

9. standard NFC 17-102 and should be connected to individual earth pits.
iii. The size of down conductor should not be less than 50 Sq.mm.
iv. Down conductor used should be pure electrolytic Copper Cable with PVC
insulation.
3
vi In the final 3m to the ground and where it is exposed to human intervention, the
down conductor shall be placed in a protective PVC pipe of 3mm minimum wall
thickness so as to avoid mechanical damage and increase human safety.
vii The down conductor should not be subject to bends of less than 0.5 meters
radius.
viii. The down conductor shall be secured to the structure/building by approved
metallic fastenings at least every 1 meters.
Earthing & Grounding
i. Earth pits must be made using chemical earth enhancing compounds and must be
maintenance free and tested by CPRI
ii. The earth resistance of the individual earth pit must not exceed 2 ohms static
impedance.
iii. Earthing shall be done with copper earth tube of 2.5” dia, 8fts long, 1.6mm thick
at least 3 meter depth and back filled with Chemical earth enhancing compound.
iv. A 25x3mm copper strip must be securely connected to the earth tube and
extended upto the earth pit chamber through a 40mm dia class B GI pipe.
v. A minimum quantity of 20 Kg of Earth enhancing compound must be used per
earth pit.
vi. An earth pit chamber made of lockable plastic material must be used as
inspection chamber.
vii. General arrangement for chemical earth pit is mentioned as annexure - B
Transient Event Counter.
A suitable CPRI tested transient Event Counter with the following specification should
provide for the indication of direct and indirect lightning strikes to building and surge
diverters by detecting and metering current impulses associated with lightning strikes.
Technical Specification for 6 Digit LCD Transient Event Counter in IP67 Enclosure
i. Current Sensitivity : 3KA for 8/20µs impulse
ii. Operating range : min 3KA, max >150KA
iii. Display : Resettable 6 digit LCD counter
iv. Power source : Lithium battery 10 years life
v. Dimensions : 110mm x 80mm x 65mm
vi. Mounting : 90mm x 60mm x M4
4
vii. Weight : 0.2KG
viii. Construction : ABS enclosure, IP67 rating
Transient Earth Bonding Unit.
All the equipments, structures & earth pits should be bonded together to form one
complete system to ensure that there is complete continuity in the lighting protection
system and thus eliminating the possibility of any flashover. However, bonding of

10. Lightning, electrical and communication earthing should be made through a Transient
Earth Bonding Unit to keep the two earths separate during normal conditions. Transient
earth bonding unit should be enclosed in an IP68 Explosion proof and weather proof
non corrosive enclosure.
Technical Specifications for Transient earth Bonding Unit.
i. Operating voltage : up to 230V DC
ii. Firing voltage : 230V DC
iii. Impulse firing voltage : <600V at 1kV/us
iv. Surge rating : 20KA 8/20us
v. Rating : IP68
vi. Connections : 6mm lugs via 10mm2
vii. Conductor : 300mm length nom.
Test Point
A test point, fitted at approximately 500-600mm from ground level, shall be provided on
each down conductor. The test point shall be of the screw down type, suitable for
isolating the earth terminations for testing purposes.

11. Below Two Picture Lighting Protection Instalation as per IEC 62305 and NFC17-102(2011)