A lightning arrester. Is used to protect electrical equipment from the harm of high transient overvoltage and limit the continuous current time and amplitude of the electrical appliance. It is usually connected between the power grid wire a and the ground wire, and sometimes it is also connected beside the electrical windings or between the wires. It is a communication cable. Another important piece of equipment that is often employed to prevent lightning damage. The role of a lightning arrester is to release overvoltage energy, thereby protecting electrical equipment from damage.
The internal material structure of a lightning arrester is varied, including valve type lightning arrester
Device, metal oxide arrester. (MOA) and discharge gaps.
Etc. Among them, zinc oxide arrester because of its excellent nonlinear voltammetry characteristics, only a few hundred microamps of current through the normal operating voltage, can be designed into a gapless structure, with good protection performance, light weight, small size characteristics, is widely used in electrical systems and low-voltage circuits. When the overvoltage invade, the current flowing through the valve plate increases rapidly, while limiting the amplitude of the overvoltage, releasing the energy of the overvoltage, and then the zinc oxide valve plate restores the high resistance state, so that the power system works normally. The types of arresters include high-voltage arresters and low-voltage arresters (surge protectors SPD). High voltage arresters mainly have valve type arresters, metal oxide arresters (MOA) and discharge gaps; The low voltage arrester includes the varistor 9, the voltage limiting electrode
Tube a, discharge gap and discharge tube 9, etc.
The application of arrester is not limited to the power system, but also includes communication lines, electronic equipment, instruments and meters. And so on, to prevent the sudden spike current or voltage caused by external interference from causing damage to the equipment. The surge protector (SPD), also known as the surge protector or surge protector, is an electronic device that provides security protection for various electronic equipment, instruments and communication lines. When the electrical circuit or communication line suddenly produces a peak current or voltage because of external interference, the surge protection device can be switched on and shunt in a very short time to avoid the damage of the surge to other equipment in the circuit.
In short, lightning arresters and surge protectors play an important role in protecting electrical equipment from lightning and overvoltage damage, and are an indispensable part of modern power systems and communication systems.
Audited Supplier 
){kind=link}
){kind=link}