Only Best Earthing Will Protect Equipments and Lightning
Importance of Grounding-Earthing
Lightning and Discharge as per IEEE998
Ground or Earthing is Word for Safety of Equpments and Human Let Apply Properly
Earthing Design
Earthing Design
Earthing Design
Equipment Earthing Design Guide
Save your Equipments and Human Lives from Surge & Lightning
Earthing Grid Design as Per IEEE80
Grid Earthing
as Per IEEE80
Grid Design as per IEEE80
Earthing ROD and Conductor Size for Grid Earthing
Metro Rail Grounding and Lightning Study Materials
Metro Rail Project
MEP Scope
Safe Building Electrical Earthing & Lighting
Major Products
Follow Electrical Safety(Earthing+Bondng) IEC/IEEE/NFPA Guide Line
Arc –Spark = Surge in Systems= Result Fires
India Smart Power Generation & Utilization
RailwayElectrical and Telecom Guide Line
Surge and discharge
Copper Boned Solid Rod as per UL467
Copper Bonded Rod Life Driven Rod
Concrete Advanced Driven Grounding Plate Encased Rod Electrode
Building Foundation
Water Pipe
Electrolytic Electrode
Resistance-toGround (RTG)
Poor
Average
Poor
Average
Above Average
Poor to Excellent**
Excellent
Corrosion Resistance
Poor
Good
Poor
Good *
Good *
Varies
High
Increase in RTG Highly Affected in Cold Weather
Slightly Affected Highly Affected
Slightly Affected Slightly Affected
Minimally Affected
Minimally Affected
Increase in RTG RTG Worsens over Time
RTG typically unaffected
RTG Increases
RTG typically unaffected
RTG typically unaffected
RTG typically unaffected
RTG Improves
Electrode Ampacity
Average
Average
Average *
Above Average *
Poor to Excellent**
Excellent
Installation Cost Average
Excellent
Below Average
Below Average
Average
Average
Poor
Life Expectancy Poor5–10 years
Average15–20 years
Poor5-10 years
Average *15-20 Above Average years *20-30 years
Below Average*10-15 years
Excellent30-50 years
Poor
Best Practice
Driven rods are relatively inexpensive to purchase, however ease of installation is dependent upon the type of soil and terrain where the rod is to be installed. The steel used in the manufacture of a standard driven rod tends to be relatively soft. Mushrooming can occur on both the tip of the rod, as it encounters rocks on its way down, and the end where force is being applied to drive the rod through the earth. Driving these rods can be extremely labor-intensive when rocky terrain creates problems as the tips of the rods continue to mushroom. Often, these rods will hit a rock and actually turn back around on themselves and pop back up a few feet away from the installation point. Because driven rods range in length from 8 to 10 feet, a ladder is often required to reach the top of the rod, hi h a e o e a safet issue. Ma falls ha e resulted fro perso el tr i g to literall ha k these rods into the earth, while hanging from a ladder, many feet in the air. The National Electric Code (NEC) requires that driven rods be a minimum of 8 feet in length and that 8 feet of length must be in direct contact with the soil. Typically, a shovel is used to dig down into the ground 18 inches before a driven rod is installed. The most common rods used by commercial and industrial contractors are 10 ft in length. Many industrial specifications require this length as a minimum. A common misconception is that the copper coating on a standard driven rod has been applied for electrical reasons. While copper is certainly a conductive material, its real purpose on the rod is to provide corrosion protection for the steel underneath. Many corrosion problems can occur because copper is not always the best choice in corrosion protection. It should be noted that galvanized driven rods have been developed to address the corrosion concerns that copper presents, and in many cases are a better choice for prolonging the life of the grounding rod and grounding systems. Generally speaking, galvanized rods are a better choice in all but high salt environments. An additional drawback of the copper-clad driven rod is that copper and steel are two dissimilar metals. When an electrical current is imposed, electrolysis will occur. Additionally, the act of driving the rod into the soil can damage the copper cladding, allowing corrosive elements in the soil to attack the bared steel and further decrease the life expectancy of the rod. Environment, aging, temperature and moisture also easily affect driven rods, giving them a typical life expectancy of five to 15 years in good soil conditions. Driven rods also have a very small surface area, which is not always conducive to good contact with the soil. This is especially true in rocky soils, in which the rod will only make contact on the edges of the
Corrosion
Copper Clad Steel Conductor
Lightning Strikes Lost of Lives and Assests we have to protect Advance Lightning Protection (ESE Type) NC17-102
A strike can average 100 million volts of electricity Current of up to 100,000 amperes Can generate 54,000 oF Lightning strikes somewhere on the Earth every second Kills Many Lives
Surge Protection Is A Must
Early Streamer Lightning Protection(1) Advance Systems for ProtectionNFC 17-102
Early Streamer Lightning Protection(2) Advance Systems for ProtectionNFC 17-102
IEC Declaration by CENELEC for NFC17-102
BT has confirmed that ESE National Standards would remain valid and thus BT recognized there ould e o e ide e of o fli t et ee NF C ‐ a d IEC EN ‐ sta dards a d consequently there is no reason, technical or otherwise, for the withdrawal of the respective national standard.BT has requested that this standard be modified in order to cancel all refere e to the IEC EN ‐ series, allowing the NF C ‐ sta dard to e ist, ith the proposal of possible future migration to international level (lEC). Accordingly, it was established that European ESE standards (France, Spain, Portugal, Slovaquia, etc.) will not conflict with other European standards and will remain valid.
• GIMELEC would draw your attention to the fact that the ter s of refere e of NF C ‐ a d • other standards, addressing alternative terminals (NF C ‐ , PR EN ‐ ‐ ) ere fro the • outset, er differe t. It is a fa t that NF C ‐ , whilst referring to ESE Technology also • comments on other standards for lightning protection systems, particularly incorporating • faraday cage, franklin rod and catenary wire systems. the 'camouflaging' of NF C ‐102 by IEC EN • ‐ and its proponents, that FRENCH STANDARD NF C ‐ is still in full force.
National Building Code 2017 in USA
National Building Code 2017 in USA
IEC 62305 and NFC17-102
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