Detection device and detection method for main distribution frame power frequency electric intrusion

Abstract

The invention discloses a detection device and detection method for a main distribution frame power frequency electric intrusion. The detection device comprises a current inductor and a voltage induction board, wherein the current inductor is installed between a backbone cable inlet end on a main distribution frame and security rows close to the backbone cable inlet end, the voltage induction board is installed on the security rows, an induction layer of the voltage induction board is close to one sides, connected to exterior line cables, of the security rows, connecting operations of exterior line cables on each security row are all completed on the same plane. According to the detection device and detection method, a current mode strong current intrusion is detected through a current transformer, the voltage induction board is adopted to detect a voltage mode strong current intrusion, composite detection is carried out on current mode and voltage mode power frequency electric intrusions, and the purpose of accurate detection for the current mode and voltage mode power frequency electric intrusions at the same time is realized.

Description

technical field [0001] The invention relates to the communication field, in particular to a detection device and detection method for power frequency power intrusion of a main distribution frame. Background technique [0002] With the popularization of telephones, the external cables in the fixed telephone network are connected to thousands of households, and its structure has become increasingly complex, and there are more cases of paralleling and crossing with various power lines. Due to insufficient separation distance or user use, the contact between the power cable and the telecommunication cable causes the power frequency strong current to enter the communication line more frequently. [0003] In order to avoid damage to the switching equipment caused by power frequency electricity entering the communication cable after the power cable touches, the main distribution frame is equipped with a security unit that can short-circuit the outside line to the ground to protect ...

AI Technical Summary

Problems solved by technology

When the voltage of the intruding strong current reaches the discharge voltage of the discharge tube in the security unit, causing the components in the short-circuit security unit to discharge to the ground or the short-circuit security unit to be short-circuited to the ground, it will be in the form of current; when the voltage of the intrusion strong current does not reach the security unit The discharge voltage of the discharge tube, the security unit is not installed on the protection device, and the external line is disconnected after the open-circuit security unit operates, etc., it will appear in the form of voltage, and the existing technology cannot accurately detect voltage intrusion, which has become the weakness of strong current intrusion detection.

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