As we all know, in the power system, the system mostly works at the rated voltage, and at this time the voltage deviation is not large, and all electrical equipment can work normally. However, when the power system encounters a lightning strike or fails, the voltage of the power system will suddenly rise, and its voltage will be several times higher than the usual normal voltage. In this way, the equipment insulation of the entire system will not be able to withstand it, causing them to be punctured or damaged. If there is a lightning arrester, the insulation will work normally at this time.
The damper is like a sizable resistor that is usually in a dormant state. When overvoltage occurs in the system, the arrester will immediately activate and enter the working state, transform into a conductor within a few seconds, and release high voltage to the ground, thus preventing the system voltage from continuing to rise and protecting the safety of people and equipment.
Metal oxide arrester
Working principle of lightning protection device:
Lightning protection device, as the name suggests, is a lightning protection device used to connect wires and ground together, often in parallel with the equipment being protected.
Lightning protection devices can effectively and promptly protect electrical equipment. As long as there is abnormal voltage in the system, the lightning arrester can play a role. When the protected equipment is operating at normal voltage, the arrester does not work, which is its interruption to the ground. However, when high voltage occurs and threatens the insulation of the protected equipment, the high voltage will be activated immediately and injected into the ground, thereby effectively limiting the voltage amplitude and thus achieving the function of protecting electrical equipment.
Moreover, when high voltage does not exist, the arrester will quickly return to its previous dormant state, allowing the system to continue normal power transmission and distribution. The lightning arrester mainly acts on parallel discharge or nonlinear impedance, and then cuts the amplitude of the intruding flow wave to help the protected equipment affected by high voltage. It can not only protect atmospheric high pressure, but also protect operating high pressure.
High voltage arrester
There are many types of lightning protection devices, but each type of lightning arrester has its own advantages, disadvantages and characteristics, so it should be used according to different environments to achieve better lightning protection effects.
HTYB-V zinc oxide arrester live test device.
Zinc oxide arrester is a lightning protection device with good protective performance, light weight, pollution resistance and stability. When an overvoltage occurs in the system, the resistance drops rapidly and releases the energy of the overvoltage, thus achieving a protective effect. Huatian Electric Power HTYB-V zinc oxide arrester live tester is a special instrument for detecting various AC electrical parameters during the operation of zinc oxide arresters. It has been widely used in on-site online monitoring (live test) and laboratory (power outage maintenance) tests of zinc oxide arresters.
Lightning arrester manufacturer
