KINGSMILL EARTHING PDF
October 27, 2020 | by admin
CONTACT. kingsmill industries pinxton headquarters. UK Head Office. Earth Rods and Accessories. Earth Rods and Accessories. Earth Rods. Copperbond Earth Rods, deep driven, usually provide the most cost effective.
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To do this properly the lightning protection system must capture the lightning, lead it safely down to earth, and disperse the energy within the ground. In the past, it was normal practice to design an earthing system to achieve a certain impedance value. The ring conductor is made from copper tape or cable aluminium is not permitted for use below ground and also helps to provide potential equalisation at ground level, in addition to potential grading. The earth electrodes being positioned near the equipment where a fault current was expected to pass.
There would therefore be a potential difference between them. If the building is above 20m in height or of an abnormal risk this distance should be reduced to 10m. This should be at least 0. This is to ensure that side flashing does not occur.
Lightning Protection & Earthing – A Brief Guide By Kingsmill Earthing
At all times consideration must be given to the possibility of side flashing. The earth system should be designed as a whole since the complete installation should rise in potential together, to avoid excessive voltage differences.
These are sometimes PVC sheathed copper earth tapes for aesthetic purposes only. The most common terminations are copper earth rods driven into the ground. Soil resistivity The external dimensions of the structure including any adjacent structures that are electrically connected The flash density in thunderstorm days per year for the area The type of construction Height above sea level Proximity of other structures such as tall trees The length of any overhead cables entering the structure.
There are differences in the design limits applying to consumer installations and to supply industry installations and reference should be made to the correct standard to check the limits which apply in each situation. Whether or not a building needs a lightning protection scheme depends on several factors. Since their inception inKingsmill have gone from strength to earthiing and have developed into one of the industry market leaders – Kingsmill have done this by focusing on service, ezrthing, price, delivery, commitment and trust.
Kingsmill aim to provide the highest standard of Earthing and Lightning Protection Products: The low impedance materials are required to ensure that the lightning energy will flow safely to the ground.
Lightning Protection & Earthing – A Brief Guide By Kingsmill Earthing
The function of this device is to only connect the earths should the voltage between them rise above a certain value. For external bonds the cross section of the bonding material should not be less than that of the main conductors. Finally, it is usual for the lightning protection system and main power earting to be interconnected.
The code of practice for Protection of Structures against lightning details these and are used to estimate risk. Earthing The various standards for earthing provide design limits to be met and together with codes of practice explain how the earthing system can be designed to meet these.
For instance, if the building is an explosive store then the highest level of protection will be required even if the risk of a strike is low. The various standards for earthing earthibg design limits to be met and together with codes of practice explain how the earthing system can be designed to meet these.
The purpose of a lightning protection system is to shield a building, its occupants and contents from these adverse effects. Internal bonds can however be of smaller cross section since they are mainly for equipotential purposes and are unlikely to carry a proportion of the lightning current. There is typically one down conductor for every 20m or part thereof the building perimeter at roof or ground level. See – Copper Earthing Mats Lattice For Combatting Step Potentials Problems ii Touch Potential the potential difference during fault conditions between exposed metalwork and a point on the soil surface iii Transfer Potential the potential difference between as insulated cable connected to a remote earth reference and the earth rod A number of factors will determine whether or not earthign person experiencing any of these potentials will be at risk, and the standards attempt to take these into account to ascertain the limits below which the design will be considered acceptable.
The most important difference is that the earthing system is designed to ensure that potentials in its vicinity are below appropriate limits. However, this needs to be assessed in relation to the consequences of a direct strike.
Click for more info. The purpose of the down conductor is to provide the low impedance path from the air termination system to the earth system. Kingsmilll down conductor should also be provided with a test point as a means of isolating the earth electrode for test purposes.
An important kingsjill in the design of a lightning protection system is the consideration of bonding of exposed metalwork on or near the structure. However, where this is not desirable for technical reasons, an earth potential equaliser can be installed between them.
History of Kingsmill Earthing. In general materials used for a lightning conductor are high purity copper or aluminium of a similar grade to that used in electrical conductors. Kingsmill thrive on solving customer products problems. Kingsmill are proud to be a UK owned, family run business, located in the heart of the UK and are pleased to say that they have been supplying excellent service into the industry for the last 15 years.
Kingsmill Earthing have been manufacturing excellence since Where practical they should be routed directly from the air kinggsmill to the earth system and be spaced symmetrically around the outside walls of the structure. If exposed metalwork such as pipes or ducts etc. This commitment to quality follows throughout all aspects of the company including manufacture, development, customer support and service.
Since no part of the roof should be more than 5m from the nearest horizontal conductor, a 10m x 20m lattice is generally used on large buildings.
These potentials are referred to as: If this potential eatrhing was greater than the breakdown value of the air or material in between, then a side flash could occur resulting in severe damage. For down leads not part of the structure, copper earth tapes and aluminium earth tapes are the most widely used materials.
Traditional taper-pointed air terminals are not as frequently earhing today but when they are they should be positioned near those points where a strike is most likely to hit the building. A number of factors will determine whether or not a person experiencing any of these potentials will be at risk, and the standards attempt to take these into account to ascertain the limits below which the design will be considered acceptable.
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For this reason, the earth termination should be bonded to the rest of the earth electrodes. Any good conductor which forms part of the building structure can be employed as a down conductor with appropriate connection to the air termination and earthing systems. Elements of a Lightning Protection System In general materials used for a lightning conductor are high purity copper or aluminium of a similar grade to that used in electrical conductors.
The principal parts are detailed below. Kingsmill products are designed, manufactured and tested to meet rigorous standards ensuring high levels of safety earthint protection for buildings, people, livestock, content and sensitive electronic equipment.