RU14476U1 - PROTECTION MODULE (OPTIONS) OF STATIONARY EQUIPMENT - Google Patents

Abstract

1. A module for protecting station equipment from excessive voltage, consisting of a housing, a printed circuit board, a contact spring, characterized in that a spark gap with U = 400 V ± 20% is placed in it. 2. The station equipment protection module is complex, consisting of a housing, a printed circuit board, a contact spring, characterized in that a spark gap with U = 400 V ± 20% is placed in it, and two posistors or two fuses are additionally installed on the printed circuit board.

Description

Protection module (options) of station equipment

The utility model relates to devices for protecting telephone exchanges against high voltages and currents.

Known protective strip and lightning rod 25-fold two-wire with thermal coils and carbon dischargers, which is used to protect telephone exchanges from high currents equal to or greater than the melting current of the thermal coil 1.

Known protective strip and lightning rod with thermal coils and carbon dischargers to protect telephone exchanges from high currents and voltages 1.

The disadvantage of the protective and lightning drain strips is that the installation of switching networks can only be carried out by soldering and, due to the bulkiness of the structure, a high density of installation cannot be ensured.

Known KRONE technology for instant connection of switching networks without soldering, without screw connection, without stripping 2. (KRONE Catalog. Technical Information and Application Guide, Section 9.0).

Known module group protection (10 lines) from high voltage firms KRONE 2. (Catalog KRONE. Technical information and instructions for use, section 12.3).

Structurally, this module consists of a housing in which there are 10 fault contacts with 10 three-electrode arresters of the T3I-A230X type with fuse-links of the Fail-safe type and a common ground bus. In the case of a long time of exposure to increased voltage, the arrester warms up and causes the fuse-link to fail, and as a result, the arrester is switched off.

A feature of the KRONE overvoltage protection module is that it uses a discharge peak with a rated static breakdown voltage of UHOM 230 V.

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Known overvoltage protection module in combination with current protection company KRONE 2. (Catalog KRONE. Technical information and instructions for use, section 12.2).

In this protection module, a 3-electrode non-lead arrester of the TZO-A230X type is used together with a contactor in the form of a metal spring with a fuse, group grounding elements and current protection elements.

A feature of the overvoltage protection module in combination with current protection is that it uses a spark gap with a rated static breakdown voltage of UHOM 230 V.

The objective of the utility model is to protect equipment from the effects of lightning discharges and pulses caused by electromagnetic radiation from high-voltage lines using modern technologies for connecting switching circuits without soldering, without screw connection, without removing insulation.

The task is achieved by the fact that the protection module uses a 3-electrode, non-outlet, small-sized gas-filled spark gap with a breakdown voltage of UHOM 400 V ± 20% with grounding elements and without a thermal cutoff.

In the integrated protection module, in addition to each circuit, a posistor or fuse is connected in series.

Due to the fact that in the Quant-EATS in the subscriber line circuits, the maximum operating voltage of 220 V (310 V amplitude) requires that the maximum static breakdown voltage of the arrester installed in the protection modules, taking into account the variation in parameters, exceeds the operating voltage of the network.

In this case, it is impractical to install the protection of a spark gap (cut-off with a fuse). More preferred are arresters with a breakdown voltage of UHOM (400-450) V ± 20%.

in the prototype, in the modules for protecting station equipment from hazardous voltage, a spark gap with a rated breakdown voltage of UHOM 230 V ± 20% was used.

A utility model will be apparent from the description and the attached drawings. The protection module (options) of the station equipment is structurally made of the same parts: a housing, a printed circuit board, a contact spring and a compact external electrodeless arrester.

On (Fig. 1) the module of protection of station equipment from the increased voltage is shown, on (Fig. 2) the module of protection of station equipment is complex.

The module for protecting station equipment from high voltage consists of a housing 1 (Fig. 1). In case 1, on printed circuit board 2, there is a 3-electrode non-lead small-sized gas-filled spark gap 3. In case 1, a contact spring 4 is fixed, which forms a working ground circuit with the spark gap of the spark gap. At the same time, there is no thermal cutoff in it.

The module for protecting station equipment from increased voltage works as follows: When a voltage of 400 V ± 20% arises on the line, a spark gap is triggered, which ensures that the line wire is shorted to ground, bypassing the station equipment.

The protection module of the station equipment complex consists of a building 1 (Fig. 2). In case 1, on printed circuit board 2, there is a 3-electrode non-lead small-sized gas-filled spark gap 3. In case 1, a contact spring 4 is fixed, which forms a working ground circuit with the spark gap of the spark gap. In addition, two posistors 5 (or two fuses) are additionally installed on the printed circuit board 2. It lacks a thermal shutoff.

The station equipment protection module comprehensive works as follows: when a voltage of 400 V ± 20% arises on the line, a spark gap is triggered, which ensures that the line wire is ground to ground, bypassing the station equipment. Posistor (or

fuse) is connected in series to the circuit of each wire of the talk line. In the case of the passage through the conversational circuit of a current exceeding the rated current of the posistor, the resistance of the posistor increases sharply, which leads to an abrupt decrease in current and an open circuit.

An example of a specific implementation. In 1999, Sokol-ATS CJSC implemented a module for protecting station equipment from high voltage and a comprehensive module for protecting station equipment.

The protection module (options) of the station equipment consists of a case made of stabilized fireproof polycarbonate of the grade PK-LT / S-16-ODTU6-05-211-1407-85, a printed circuit board made of heat-resistant fiberglass with a thickness of 1.5 mm, grade FR4-2- 181.5, contact earthing springs made of spring tape 0.35 mm thick, grade ISC 15-20 GOST 5187-70.

On the printed circuit board there is a 3-electrode, non-lead, small-sized gas-filled spark gap UHOM 400 V ± 20% of type P124A.

In the integrated protection module, in addition to the printed circuit board, there are two 0.12 A posistors with a voltage of 250 V, type TRP27TTSAF.434.121TU.

The proposed protection module (options) of the station equipment is a unified design designed to protect one line from dangerous voltages and currents.

The maximum unification of parts and assemblies ensures their low cost. In case of operation of the protection module, only one talk line is disconnected.

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4 Utility Model Formula

1. A module for protecting station equipment from high voltage, consisting of a housing, a printed circuit board, a contact spring,

and characterized in that a spark gap with UHOM 400 V ± 20% is placed in it.

2. The protection module of the station equipment is complex, consisting of a housing, a printed circuit board, a contact spring, characterized in that a surge arrester with UHOM 400 V ± 20% is placed in it, and two posistors or two fuses are additionally installed on the printed circuit board.

Sources of information:

1. Protective strips PP0.481.006TU

2. KRONE catalog “Technical information and application manual.

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Claims (2)

1. The protection module of station equipment from high voltage, consisting of a housing, a printed circuit board, a contact spring, characterized in that a spark gap with U _nom = 400 V ± 20% is placed in it. 2. The protection module of the station equipment is complex, consisting of a housing, a printed circuit board, a contact spring, characterized in that a spark gap with U _nom = 400 V ± 20% is placed in it, and two posistors or two fuses are additionally installed on the printed circuit board.