Feeder terminal device

Abstract

The invention discloses a feeder terminal device which comprises a protection mechanism, a communication interface and a device panel. The protection mechanism comprises three-section overcurrent protection, inverse time limit overcurrent protection, phase current acceleration section protection, three-phase automatic reclosing, zero-sequence three-section overcurrent protection, zero-sequence inverse time limit overcurrent protection, zero-sequence acceleration section protection, self-adaptive zero-sequence three-section overcurrent protection, self-adaptive zero-sequence inverse time limit overcurrent protection and self-adaptive zero-sequence acceleration section protection; the communication interface comprises an RS485 interface, an Ethernet interface, an optical fiber interface and a time synchronization interface; the device is scientific and reasonable in structure, safe and convenient to use and powerful in operation and logic functions, unit design and modular structure are achieved, expandability is high, use under different conditions is facilitated, the stability and reliability of a hardware circuit are improved by adopting the automatic monitoring and compensation technology, and the device is suitable for large-scale popularization and application. The method is suitable for better popularization and use.

Description

technical field [0001] The invention relates to the field of feeder technology, in particular to a feeder terminal device. Background technique [0002] The feeder is the signal line connecting the early TV and the outdoor antenna. It is generally flat and double-wire. The wire body is made of insulating plastic. There is no shielding layer outside, and the anti-interference ability is extremely poor. Its performance will be affected by rainy weather when used outdoors. Now Since the popular TV signal line of cable TV is completely replaced by coaxial cable, the feeder includes the lower lead of the antenna and the main line, branch line, branch line, user line, etc. of the system. The feeder lines used in the cable TV system mainly include flat feeder lines and coaxial cables. There are three types of cables and optical cables, and the most widely used is coaxial cables; [0003] Its main task is to efficiently transmit signal energy, transmit the signal power from the tra...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a feeder terminal device, which can effectively solve the problem that the current feeder terminal device is not stable enough to realize modular protection, measurement and control, and a series of operations, which are often single and not universal, and cannot be better. promotional use of

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