Yueqing Dengrui Electric Co., Ltd.

Yueqing Dengrui Electric Co., Ltd. supplies arrester disconnectors. How much does a surge arrester disconnector cost? If you are looking for a lightning arrester disconnector manufacturer, choose Dengrui Electric. Please call us for details! The following is a detailed introduction to the arrester disconnector
Function of the arrester disconnector
When the high-voltage arrester fails, the arrester lead is disconnected from the system to eliminate continued system faults and give a visible sign of the faulty arrester ( A device that cuts off the gap) is called a disconnector. There is no ability to cut off the fault current, so it may not be able to completely prevent the explosion of the arrester. It can only reduce the risk of explosion of the arrester by more than %. The disconnector has been used in foreign countries for more than ten years. It has been used and manufactured domestically for nearly ten years and has been exported. It is used in conjunction with lightning arresters, giving full play to the advantages of zinc oxide arresters, so it is indispensable for lightning arresters. Required supporting components.
Types of arrester disconnectors
Generally, there are three types of disconnectors. The first type is the hot melt type. When the zinc oxide arrester fails, the main manifestation is that the current flowing through the valve plate increases, causing the valve plate to The group is in a heating state. Since the valve group has a negative temperature coefficient, the heating causes the equivalent resistance to decrease, which in turn causes the heating to intensify, forming a vicious cycle. In this way, the working status of the arrester is directly transmitted to the disconnector in the form of temperature, and the power frequency current is used to generate heat through itself. When the temperature reaches the design value of the disconnector, the low-melting point alloy melts, and the disconnector action causes the arrester to connect with the grounding wire. Disengage, cut the faulty arrester out of operation, and give an obvious signal to the inspectors, which provides practical technical measures for the maintenance of oxidation lightning arrester status. The second type is the thermal explosion type disconnector. When the zinc oxide arrester fails, the main manifestation is that the current flowing through the valve plate increases, and the power frequency current is used to pass through itself to generate an arc, which ignites the explosive and inserts it into the bolt. When the explosion occurs, the action of the disconnector separates the arrester from the grounding wire, cuts the faulty arrester out of operation, and gives an obvious signal to the inspectors, which provides practical technical measures for the maintenance of oxidation lightning protection status. The third type is the composite type, which is a disconnector made by combining the principles of the hot melt type and the thermal explosion type disconnector
Precautions for the use of zinc oxide arrester disconnectors
The grounding end of the disconnector must be Use copper multi-stranded flexible wires with a cross-sectional area greater than ㎜
The second disconnector used in transmission lines must be connected to the conductor (power end).
The three disconnectors and arresters should not be installed on the same axis.
The installation of the four disconnectors should allow the disconnector to move freely and form a sufficient air gap so that the faulty and damaged arrester can be reliably isolated from the system, thereby ensuring that the normal operation of the system is not affected.
This information supplies the arrester disconnector. The price of the arrester disconnector is provided by Dengrui Electric. The product description 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