Surge protective device for communication cabinet

Abstract

The invention discloses a surge protective device for a communication cabinet, comprising a shell, a surge protective module and a standby protective module fixedly arranged in the shell; the surge protective module is fixedly arranged in the shell through moving contacts and fixed contacts, the moving contacts are respectively fixed at an incoming line end and an outgoing line end of the surge protective module, the fixed contacts are respectively fixed on an incoming line column and an outgoing line column of the shell, and the moving contacts are respectively matched with the correspondingfixed contacts; and a module auto-switching device is arranged between the surge protective module and the standby protective module and comprises a control contact and an elastic device. The surge protective device provided by the invention realizes the switching between the surge protective module and the standby protective module through a mechanical structure, thereby protecting a communication device and preventing the communication device from being damaged; the safety of the communication cabinet is greatly increased; and due to the realization of the switching between the surge protective module and the standby protective module through the mechanical structure, the advantages of simpler structure, low cost and operation reliability are achieved.

Description

technical field [0001] The invention relates to a surge protection device, in particular to a self-injection surge protection device with a backup protection module used in power distribution system lines and communication system data transmission lines. technical background [0002] The surge protector is a device that limits the instantaneous overvoltage that enters the power line and signal transmission line within the voltage range that the equipment or system can withstand, or leaks a strong lightning current into the ground to protect the system. The traditional surge protector has only one surge protection module inside. During use, when the surge protection module is damaged or aged, if the surge protection module is not replaced in time, the power distribution line or communication data line will be in vain. Surge protection state, causing potential harm to equipment and personal safety. For example: the surge protector of the power distribution system is generally...

AI Technical Summary

Problems solved by technology

[0003]In the 3G project of the communication industry, the power circuits and signal data circuits in a large number of outdoor communication cabinets are protected by surge protection devices. The locations are relatively scattered, and it is difficult for maintenance personnel to check the status of the surge protector in time, and the working performance of the surge protector is mainly prompted by the color change of the visible window on the panel, showing the normal working status, backup working status and fault status. Three types, without the function of sound alarm, this kind of alarm through the display panel is easy to be ignored by the management personnel, thus causing damage to the communication equipment

[0004] In order to solve the above technical problems, Chinese patent literature discloses a surge protection device, the patent number is "ZL200720121141.4", and the patent name is "overvoltage automatic switching power supply surge protector". The surge protector includes a control circuit module, a first overvoltage protection module, and at least one second overvoltage protection module, the first and second overvoltage protection modules are connected through a switch, and automatically switch to a backup overvoltage protection module after a group of overvoltage protection modules fails. The voltage protection module plays a better role in protecting the equipment by switching between two groups of overvoltage protection modules; Switching of the voltage protection module, the operation is easy to fail

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