Yueqing Dengrui Electric Co., Ltd.

Yueqing Dengrui Electric Co., Ltd. supplies/zinc oxide arresters. Zinc oxide arresters are on sale at special prices. If you are looking for/zinc oxide arrester manufacturers, choose Dengrui Electric. Please call us for details! The following is a detailed introduction about /zinc oxide arrester
Under the rated voltage, the current flowing through the /zinc oxide arrester valve is only the following, which is equivalent to an insulator. Therefore, it can isolate the operating voltage from the valve disc without a spark gap. When the voltage acting on the metal zinc oxide arrester exceeds the fixed value (starting voltage), the valve plate is turned on and a large current is leaked into the ground through the valve plate. At this time, the residual voltage will not exceed the withstand voltage of the protected electrical equipment. The purpose of protection was achieved. After that, when the applied voltage drops below the operating voltage, the valve automatically terminates the conduction state and returns to the insulation state. Therefore, there is no problem of arc burning and extinguishing in the entire process.
/Zinc oxide arrester is an arrester with good protection performance. Utilizing the good nonlinear volt-ampere characteristics of zinc oxide, the current flowing through the arrester at normal operating voltage is extremely small (microamperes or milliamperes). When overvoltage occurs, the resistance drops sharply and the energy of the overvoltage is discharged, reaching protective effect. The difference between this kind of arrester and traditional arrester is that it has no discharge gap and uses the nonlinear characteristics of zinc oxide to play the role of discharge and breaking.
Because the zinc oxide arrester has no freewheeling, when the voltage acting on the zinc oxide arrester exceeds a certain value (this value is called the starting operating voltage, which is the DC reference voltage value below), conduction will occur. , then, the residual voltage on the valve stem is controlled by its good nonlinear characteristics. When the system voltage drops to the starting operating voltage, the conduction state of the zinc oxide arrester terminates, and it is equivalent to an insulator. The arrester is different. It not only absorbs the energy of overvoltage but also absorbs the energy generated by power frequency freewheeling. Only after the series gap is discharged can the lightning current be discharged to the ground. It can be seen that when lightning strikes, the zinc oxide arrester can act in time to reduce the amplitude of the intruding wave and increase the protection range. Or when the protection range is the same, the protection margin can be increased (the leakage is more timely), so that the probability of electrical equipment insulation being affected by higher overvoltage is reduced, and the life of the protected equipment can be extended.
What are the models of zinc oxide arresters
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Power station type arrester.///
This information supply/zinc oxide arrester Zinc oxide arrester special sale is provided by Dengrui Electric , product description information is subject to change without notice. For details, please log on to the official website of Yueqing Dengrui Electric Co., Ltd. or call for consultation