Signal isolation distributor with surge protector

Abstract

The invention relates to a signal isolation distributor with a surge protector. In the signal isolation distributor, functions such as thunder and lightning protection, signal photoelectric isolation, signal distribution, power distribution and the like are integrated. The signal isolation distributor is composed of a lightning protection unit (1), a photoelectricity isolation unit (2), a power distribution unit (3), a signal distribution unit (4) and a pedestal (5).The components are reliably and electrically connected, so that functions such as lightening protection, isolation, distribution and power distribution of signal circuits connected to the signal isolation distributor can be realized. In the invention, multiple functions are integrated, attenuation in the process of signal transmission is reduced, transmission precision is enhanced, installation of multigroup products is facilitated as a guide rail is employed to input power supply for power distribution; the optional power distribution function is suitable for applications in different environments, the cost is reduced, the volume is reduced, the installation is easy, the fault points are reduced, the installation space is saved and the installation and maintenance are facilitated.

Description

technical field [0001] The invention relates to a signal isolation distributor, in particular to a signal isolation distributor with a surge protector. Background technique [0002] Lightning is an important cause of damage to electronic equipment. In industrial automation systems, the signal transmission lines between field instrumentation equipment and control room equipment are long or are mostly located in places with harsh outdoor environments. Lightning surges or other Interference pulses are bidirectionally transmitted along the line and invade the equipment at both ends, causing abnormal operation or even damage to the equipment. Although the line where the signal isolator is installed can prevent some signal interference, the signal isolator cannot suppress the interference caused by lightning, and it is easily damaged by lightning surges and fails, resulting in the interruption of signal line transmission or the failure of both ends of the line. damage to equipmen...

AI Technical Summary

Problems solved by technology

The problems in the above measures are: 1. The existing signal isolator can only isolate the ordinary pulse and interference in the signal, and cannot isolate or filter surge currents such as lightning electromagnetic pulses. When subjected to lightning electromagnetic pulses, it is very easy to If it is damaged and causes protection effectiveness or signal interruption, and may cause equipment damage, a surge protector must be installed at the same time

2. Install a signal isolator and a surge protector on the line at the same time, which increases the wiring points in the line and the attenuation of the line signal. Unreliable wiring will easily cause line transmission interruption and system instability, that is, increase the number of fault points

3. Installing two kinds of equipment on the line increases the installation cost and difficulty, and also occupies the installation space, which brings inconvenience to construction and maintenance

4. The existing signal isolators and distributors are difficult to convert to each other, and the adaptability to different environments on site is poor

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