DE931961C - Surge arrester built into an insulating housing for telecommunication lines - Google Patents

Description

Surge arrester built into an insulating housing for telecommunication lines In the Fernmelidetechmnk you can find the discharge of external and overvoltages, which through gal: vani, cal coupling or influence from multiple current and single phase alternation: current systems (Railway systems) can occur in local telecommunication lines (connection lines), mainly carbon lightning arresters or surge arresters are used in order to or to avoid personal injury. Carbon lightning arrester or surge arrester are used in the main distributor of the local authorities, carbon lightning arresters with coarse voltage protection at the call stations with above-ground management of the connection division. aside from that Isit still a coarse voltage protection in the form of the cutting! emb.l, itzable, iter in transferring terminations intended.

The known arrangements for dissipating external voltages and overvoltages have several disadvantages. When using a coal lightning arrester, the Addressing the same of the affected S: tromkireti: s grounded. This earth remains up to exist for the repair of the coal lightning arrester. The connection is disturbed .so d @ ate a conversation pig, sfa: l'1 enters. A particular disadvantage is that the telephone is mostly disturbed after a thunderstorm, so that no accident or danger reports are given can be.

The connection; line crap against. Overvoltages with the inclusion of Coarse funnel section (200 volts) in the overpass lock only in the main distributor (Beginning) and. secured at the introduction (end). Overvoltages can affect the operating earths contaminate.

There is only one overvoltage protection at the spiral points with overhead connection of the connection line, while intercom stations with underground Leadership not protected against heated longitudinal voltages by technical alternating currents are. Direct external stresses are thus, generally over the entire spiral shaft guide dragged away, so, d, ate all devices, cables and the like that are not connected here endangered are.

These disadvantages become apparent when the surge arrester is built into an insulating housing avoided for telecommunication local lines according to the invention. The arrangement according to the Invention eats diadürch characterized in that the overvoltage arrester is used as a plug is formed, the insulating part of which one each. Surge arrester for each line branch the Ferumelldeleitung: receives and its contact parts designed as plug-in sockets to attach this. On the soldering surface of the Oirt cable termination. The arrangement according to the invention thus consists of a special two-pole one Plug that fits on all solder pins of the local cable terminations. per double division a plug is used. They are already built into an insulating housing. Surge arrester; known. In the case of the familiar arrangement, the surge arrester is connected to a connection line connected via a fusible connection, which through an earth fault current that occurs when this arrester becomes defective, leading to melting we brought it, so that the connecting line after blowing through the Schmeazdirahte is pulled out of the arrester housing.

In addition to the simple design, the arrangement according to the invention serves Advantage, that the installation of this overvoltage compensation without structural changes to the existing connection foot: battens with solder pins of the cable terminations is possible. It is therefore necessary to set up a special distribution facility with built-in safety devices.

In the following, the subject matter of the invention is explained in more detail using an exemplary embodiment shown in the drawing, namely, FIG. 1 shows the front view, while FIGS. 2 and 3 relate to the view from above or to the Seiltenansücbt . The plug is, according to Fig. Q. j switched to the services a, b between the exchange and subscriber subscriber. The two-pole connector consists of an insulating housing i which accommodates the two over-voltage connectors 6, 7 and whose connectors are denoted by 2 and 3. The insulating housing is on the manufacturing site of all plugs 2 and 3 with also made of insulating material, btiispieaiswei, se cone-shaped mansdhe'ttem q. Mistake. The earth connection is denoted by 5. At the end facing away from the sockets 2 and 3, the insulating housing is provided with a window 8, so that the conductors in the insulating housing can also be observed during electrical testing without the need to the plug of the one to be protected. Remove line. The overvoltage supervisor can be replaced by simply opening the window.

The sockets 2 and 3: are appropriately provided with longitudinal slots, to: avoid damaging the jumper wire.

The arrangement according to the invention makes it possible to measure external voltages in Connection lines to the ge endangered route: limit and the external voltages to work before and after the danger point. The plant earth remains free. of overvoltage. WImdi a local cable through induced longitudinal stresses; Short circuit to electric Railway systems with single-phase alternating current operation increased above the appropriate values influences, so the -induced voltage at the beginning and end of the geophysiological route using this. Zweipofg en Siteckers derived from the invention for Erdre! tet will. The external voltage is limited to the hazardous route. The same can be used accordingly to prevent galvanic couplings.

Official staff and participants: are not exposed to external voltages, so that his office and special measures for the participant are omitted.

Claims (5)

PATENT CLAIMS: i. Overvoltage filter built into an insulating housing: Ablltilter for Fernmeldeortgleitungen, d'adwrch marked that the overvoltage arrester is designed as a plug, the insulating part of which is one each. Surge arrester for each branch of the telecommunication line and whose contact parts, which are designed as sockets, are used to attach the plug to soldering pins of the local cable end connector. 2. Arrangement according to Ansprudi i, characterized in that the sockets are provided with longitudinal shields. I or 3. An arrangement according to claim 2, DA by in that each electrode of each Übeirspammungsabaeiters glues. each connected to a branch of the telecommunications line via a connector sleeve and: that the other electrode is connected to an earth connection provided on the connector: ß. q .. Arrangement according to claim i or the following, d'adurrh characterized, that the surge arresters are arranged moisture-proof in the plug. 5. Arrangement according to claim 1 or the following, characterized in that the plug at the end facing away from the sockets provided with an openable window Is.