MEGATRO 35m lightning Arrestor power angular towerMEGATRO 35M lightning Arrestor power angular tower, also known as lightning protection tower, lightning elimination tower, according to the different materials used can be divided into round steel lightning protection tower and angle steel tower, according to different functions can be divided into lightning rod tower and lightning protection tower, round steel lightning protection tower is widely used because of its low cost. MEGATRO 35M lightning Arrestor power angular tower material can be made of round steel, angle steel, steel pipe, single steel pipe, etc. The height range is 10 m-60 m. The company's production of lightning protection tower including: lightning rod tower, lightning protection tower, lightning tower and so on. Application: MEGATRO 35M lightning Arrestor power angular tower is used in communication base station, radar station, airport, oil depot, missile base station, direct lightning protection, building roof, power plant, forest, fuel depot, weather station, factory workshop, paper factory, and other important places. Advantages: steel pipe as column material, small wind load coefficient, strong wind resistance, tower column with external flange connection, bolt tension, not easy to destroy, reduce maintenance cost tower column triangle layout, save steel, follow small, Small area, saving land resources, convenient site selection, light weight of tower body, convenient transportation and installation, short construction period, short tower shape design with wind load curve, smooth lines, rare wind disaster, not easy to collapse, The design of reducing human and animal casualties accords with the national code of steel structure design and the design code of tower mast, and the structure is safe and reliable. Ability to resist damage: lightning protection principle of magnitude 6 wind magnitude 10 / earthquake: lightning current connector is a non-inductive, low-impedance metal inner conductor that leads down the wire and conveys lightning current to the earth after the lightning is connected. The protected antenna tower or building is free from side impact and live electricity. In most cases, the impact of an electrostatic field cable is less than a tenth of the impedance of the tower, avoiding the building or tower from being charged, eliminating lightning restrictions on the current intensity of the mine, The damage protection range of the protected equipment to reduce the counter attack and inductive overvoltage is calculated according to the GB gb50057 rolling ball method. Design weight above 10 meters: > 1 ton (specific weight depending on region, small and strong mined areas, coastal wetlands slightly different from arid areas in the west.) Material: Q235-Q345 Round Steel anticorrosion treatment: hot water zinc anticorrosion / cold crossing zinc corrosion / paint material origin: Baosteel / Shougang / Handan Steel / Tangshan Iron and Steel, etc. Effective life: more than 30 yearsUse parameter height: 10 m -40 m design weight: > 1 ton seismic fortification intensity: 1 t: 8 degree and small day 8 degree area basic wind pressure: 1 W 0. 4 and 0.7kn/m2 materials: angle steel, steel plate, Round steel material: 1: Q235 anticorrosion: hot water zinc anticorrosion treatment material origin: Baosteel / Shougang / Hangang / Tangshan Iron & Steel Co., Ltd. Effective life: 30 years or more foundation bearing capacity: and 200 kn/m2 ice thickness: ≤ 10mm perpendicularity: ≤ 1 / 1000
From Wikipedia, the free encyclopediaJump to navigationJump to searchPowerline worker performs maintenance of a lightning arrester on an electrical transmission tower in New Brunswick, CanadaA lightning arrester (alternative spelling lightning arrestor) (also called lightning diverter) is a device used on electric power systems and telecommunication systems to protect the insulation and conductors of the system from the damaging effects of lightning. The typical lightning arrester has a high-voltage terminal and a ground terminal. When a lightning surge (or switching surge, which is very similar) travels along the power line to the arrester, the current from the surge is diverted through the arrester, in most cases to earth.In telegraphy and telephony, a lightning arrester is placed where wires enter a structure, preventing damage to electronic instruments within and ensuring the safety of individuals near them. Smaller versions of lightning arresters, also called surge protectors, are devices that are connected between each electrical conductor in power and communications systems and the Earth. These prevent the flow of the normal power or signal currents to ground, but provide a path over which high-voltage lightning current flows, bypassing the connected equipment. Their purpose is to limit the rise in voltage when a communications or power line is struck by lightning or is near to a lightning strike.If protection fails or is absent, lightning that strikes the electrical system introduces thousands of kilovolts that may damage the transmission lines, and can also cause severe damage to transformers and other electrical or electronic devices. Lightning-produced extreme voltage spikes in incoming power lines can damage electrical home appliances or even produce death.Lightning arresters are used to protect electric fences. They consist of a spark gap and sometimes a series inductor.Lightning arresters can form part of large electrical transformers and can fragment during transformer ruptures. High-voltage transformer fire barriers are required to defeat ballistics from small arms as well as projectiles from transformer bushings and lightning arresters, per NFPA 850.
Components A potential target for a lightning strike, such as an outdoor television antenna, is attached to the terminal labeled A in the photograph. Terminal E is attached to a long rod buried in the ground. Ordinarily no current will flow between the antenna and the ground because there is extremely high resistance between B and C, and also between C and D. The voltage of a lightning strike, however, is many times higher than that needed to move electrons through the two air gaps. The result is that electrons go through the lightning arresters rather than traveling on to the television set and destroying it.A lightning arrester may be a spark gap or may have a block of a semiconducting material such as silicon carbide or zinc oxide. "Thyrite" was once a trade name for the silicon carbide used in arresters. Some spark gaps are open to the air, but most modern varieties are filled with a precision gas mixture, and have a small amount of radioactive material to encourage the gas to ionize when the voltage across the gap reaches a specified level. Other designs of lightning arresters use a glow-discharge tube (essentially like a neon glow lamp) connected between the protected conductor and ground, or voltage-activated solid-state switches called varistors or MOVs.Lightning arresters used in power substations are large devices, consisting of a porcelain tube several feet long and several inches in diameter, typically filled with discs of zinc oxide. A safety port on the side of the device vents the occasional internal explosion without shattering the porcelain cylinder.Lightning arresters are rated by the peak current they can withstand, the amount of energy they can absorb, and the breakover voltage that they require to begin conduction. They are applied as part of a lightning protection system, in combination with air terminals and bonding.
Lightning rodA lightning rod (US, AUS) or lightning conductor (UK) is a metal rod mounted on a structure and intended to protect the structure from a lightning strike. If lightning hits the structure, it will preferentially strike the rod and be conducted to ground through a wire, instead of passing through the structure, where it could start a fire or cause electrocution. Lightning rods are also called finials, air terminals or strike termination devices.In a lightning protection system, a lightning rod is a single component of the system. The lightning rod requires a connection to earth to perform its protective function. Lightning rods come in many different forms, including hollow, solid, pointed, rounded, flat strips or even bristle brush-like. The main attribute common to all lightning rods is that they are all made of conductive materials, such as copper and aluminum. Copper and its alloys are the most common materials used in lightning protection.