SU1422274A1 - Protecting device for switchgear - Google Patents

Abstract

This invention relates to communications equipment. The aim of the invention is to increase reliability. The device contains a set of protection modules 1 and at least one backup protection module 2 installed in the socket connectors with break contacts 3. Each protection module is made on a printed circuit board 4 with contacts 5 and a protection element 6. When the safety element 6 goes out of the protective element 6 1 take off. With this, the pins of the connector of this S5 block are bridged by the action of elastic forces. Since all contacts of the remaining modules 1 are open, the equipment is connected to the backup protection module 2 via closed contacts 3. When element 6 is replaced, module 1 is re-inserted into the slot, while board 4 opens the spring contacts 3, which ensures continuity of equipment protection. 2 Il. s (l

Description

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The invention relates to communications equipment, in particular to telephone station equipment.

The purpose of the invention is to increase the reliability of the protective device. FIG. 1 shows the wiring diagram of the protective device; in fig. 2 is a block diagram of the device.

The device contains a set of protection modules D 1 and at least one backup protection module 2 installed in the socket connectors with break contacts 3 designed for connecting removable protection modules in the circuit of subscriber lines.

Each protection module is made on the printed circuit board A - with contacts 5 it has protective elements 6 in quantity corresponding to the number of subscriber lines connected to the connector.

Each connector is made in the form of a pair of disconnecting contacts 3 in pairs, with printed contacts.25

Unlike the known protection modules 1 in the backup module, the 2 contact pads 5 are made on the other side of the board.

The device works as follows: JQ at a time.

When an alarm is triggered (not shown) about the failure of the protecting element 6, the protection module 1 with the failed element is removed, and the connector contacts of this block are closed in pairs by the action of elastic forces. Due to the fact that all the other protection modules 1 are installed and the contacts 3 of the connectors of these models are

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Lei open, incoming lines (-In) and output lines (Outlets) connected to the outgoing protection module are connected to the backup protection module 2 via closed contacts 3.

After replacing the defective protection element 6, the protection module 1 is re-inserted into the connector, while the module 4 card opens the spring contacts 3 of the connector, disconnects the backup module 2, and connects this module 1 to the protection device with printed contact pads 5.

The proposed design of the protective device ensures the reliability and continuity of the protection of the station equipment when replacing the failed protection element.

Claims (1)

Invention Formula A protection device for switching equipment containing a set of removable protection modules made on printed circuit boards with one-sided pads, interacting with two-way pins of the female connectors, so that, in order to increase reliability, the device is equipped with at least one redundant module protection with pads on the back side of the board, and the contacts of the female connectors are filled with disconnectors.