lightning arrester definition Surge Arrester: An electrical appliance used to protect electrical equipment from high transient overvoltages during lightning strikes and to limit the freewheel time, as well as the constant continuous current assignment. Arresters are sometimes referred to as over-voltage protectors, over-voltage limiters. The scope of application AC gapless metal oxide surge arresters are used to protect the insulation of AC transmission and distribution equipment from lightning overvoltage and overvoltage damage. For transformers, transmission lines, distribution screens, switchgear, power metering boxes, vacuum switches, shunt compensation capacitors, rotating electrical and semiconductor devices over-voltage protection. Features and principles AC gapless metal oxide surge arresters with excellent non-linear volt-amperage Choi Yu ç…Š ç…Š 匦 匦 匦 匦 hospital è°© ⑽ 扌 Ao ⑼? Charm naphthalene toad â’‰ â’‰ ditch Ting Ling Ting Ping? Species? Miao drum 芰 η Jun â’› Hussein â’– â’– assessment Box â’‰ Huangxiong 0 horizontal? â’” å³ è™» ã‚¡ ⑽ Tribulus 湎 Ding â’š 芊 庋 dilute ⑹ 倜? ã• æ° æ° Ke Ke The arrester in the normal system operating voltage, showing a high resistance state, only micro-level current through. Under the action of over-voltage and high-current, it presents a low resistance, which limits the residual voltage at both ends of the arrester classification Arrester is divided into many kinds, there are metal oxide surge arresters, line type metal oxide surge arresters, gapless line type metal oxide surge arresters, fully insulated composite coat metal oxide surge arresters, detachable arrester. The main types of arresters are tubular arresters, valve arresters and zinc oxide surge arresters. The main working principle of each type of arrester is different, but their work is essentially the same, are to protect the communications cables and communications equipment from damage. effect The arrester is connected between the cable and the earth, usually in parallel with the equipment being protected. Arrester can effectively protect the communications equipment, in the event of abnormal voltage, arrester will take place to play a protective role. Surge arresters do not function when communications cables or equipment operate at normal operating voltages and are considered open circuits to the ground. In the event of a high voltage and endangering the insulation of the protected equipment, the arrester immediately acts to direct the high-voltage inrush current to the ground, limiting the voltage amplitude and protecting the communication cables and equipment from insulation. When the over-voltage disappears, the arrester quickly restore the status quo, the communication line to work properly. Therefore, the main function of the arrester is to reduce the over-voltage value of the protected device by cutting the invaded flow wave through the parallel discharge gap or the nonlinear resistor, thereby protecting the communication line and the device. Multifunctional Motor,Conical Motor,Running Motor,Lifting Motor Xinxiang Anlian Crane Construction Machinery Co.,Ltd. , https://www.electrical-hoist.com