DK143190B - HIGH EFFICIENCY CONNECTOR AND EQUIPMENT AND AC AC ISAIR PROTECTOR - Google Patents

Description

(S) (11) PUBLICATION 1431 90 DENMARK (si) im.ci.3 h 01 η 51/06 // h 01 h 33/02 '(21) Application No 2J> b2 / l6 (22) Filed on 28 May 1 976 (24) Running Day May 28, 1976 (44) The application submitted and the writ petition published on 1 3 · Jul. 1 98l

DIRECTORATE OF

PATENT AND TRADE MARKET (3 °) Moritus gassed from the

6. Jun. 1975 * 2325810, DE

(4l) Aim. avail. Dec 7 1976 (71) LICENTIA PATENT-VERWALTUNGS-GMBH., Theodor-Stern-Kai 1, 6 Frankfurt am Main, DE.

(72) Inventor: Hugo Klotz, Breitunger Weg 15a, 1000 Berlin 47, DE: Heinz Fromke, ReichssportfeldEtrasse 16/720, 1000 Berlin 19, DE.

(74) Plenipotentiary in the proceedings:

Larsen & Birkeholm A / s Scandinavian Patent Office.

(54) High-power switchgear and DC and AC power, especially air protection devices.

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a high power coupling apparatus and to DC and AC systems, in particular power protection apparatus, with a flap anchor carrying at the free end over an insulating coupling support a U-shaped coupling bridge, the legs of which at the ends carry contacts and protrude through passageways. separate arc chambers with magnetic blowing means.

It is known to provide high coupling frequency coupling protection devices with knife-mounted movable anchors 10 (DE-PS 976 366). In order to increase the robustness and power effect, the contact systems are often moved via lever systems, eg angular rod operation. These can also be kneaded (DE-AS 1 213 032). The use is not advantageous because of the switching mechanism. In the known air protection devices, the power supply to the movable connectors is most often carried over live conductive bands which are moved with and which must be observed due to danger of breakage. Coupling bridges are in a known way more convenient for high coupling frequency, since they only have bridging function and prevent the movement of live leads to the moving contacts. Such coupling bridges, for example, are used for lifting anchor protection devices for inferior coupling services. But with higher coupling services, the application 10 creates difficulties. In such switching services, protective devices with arc chambers and magnetic blowing are switched on. When these voltages are to be coupled with alternating voltages, as already known, unilateral arc chambers are no longer usable in reversing the blowing effect at the beginning of the next half-wave.

From DE-AS 12 57 933, it is known for rapid switching with impact anchor splitting of the coupling piece and the magnetic blowing of the arc to insert U-shaped coupling bridges, secured 20 to flap anchors, with their legs penetrating the wall from the separate arc chambers. Such impact anchor couplers cannot be compared to ordinary anti-anchor protectors, nor are they intended for universal insertion in DC and AC systems. However, in the present invention, the starting point is a coupling structure of this type.

It is an object of the invention to provide a simple and compact coupler, especially a high coupler air protection apparatus, which is suitable for high coupling performance even in uneven web operation. In addition, it must also be suitable for the DC or AC voltage operation that is frequent in the runway operation.

According to the invention, this task is solved by the fact that the U-shaped flat bridged bridge has parallel, broad-legged, wide legs which carry contacts at the ends of the wide side and in their middle part above the cross-bridged bridge and their contact-side ends are twisted 90 °, whereby the upright center portion of each leg projects through a narrow passage slot in the associated arc chamber, which by alternating voltage cut-outs and the use of permanent magnetic blowing is designed as a defined auxiliary blow-out opening. part of the arc chamber with approx. 1/4 of the normal arc path.

In this invention, the service life of the prior art protective devices can be significantly increased with respect to coupling play and contact life. Essentially, the particular coupling brew embodiment and the arrangement of two defined blowout openings for the arc. The main blow opening for the arc chamber serves in conjunction with the magnetic blow device and the larger volume and arc path 15 provided for disconnection at direct voltage and one half wave at alternating voltage. The auxiliary blowout opening (passage side of the switching bridge) is only available for the second half wave in alternating voltage disconnection. The required arc chamber volume behind or in front of the connectors 20 needs little space, approx. 1/4 of the main arc path.

Twists on connectors (DE-AS 10 63 695) and also U-connected coupling bridges (DE-AS 12 02 879) are known per se, however these known twists serve the electrical connection 25 or are found only for the sake of stability . Thus, they have a different task and are also twisted in a different way.

It is expedient if the arc chambers can be swung down over the contact means by means of the drawn through slots for the twisted leg part of the coupling bridge, whereby narrow blower gauges in a stationary, permanent magnetic fan system intervene in external lateral control notes. Such a device is easy to install and gives a very narrow structure.

It is further advantageous that the two arc brackets for the coupling bridge are located close to one another and separated by an insulating wall which protrudes above the chambers, especially at the exhaust openings. Thus, two chambers still form a unit, which in turn benefits the simple structure. The elevated insulation wall provides an enlarged crawl path.

The invention will be explained in more detail below with reference to the schematic embodiments, in which fig. 1 shows a coupling bridge; FIG. 2 and 3 show the protective apparatus according to the invention 10 with mounted coupling bridge and arc chamber at different angles.

The FIG. 1, the U-shaped coupling bridge 1 carries at the end of its wide, in the same plane leg 2, which is twisted 90 ° to the transverse piece 5 on the middle part 3 on a wide side contact pieces 4. On the axis of symmetry 6 is one after the other, the leg side, prepared a long hole 7 and ball bale 8. Figures 2 and 3 show the coupling bridge in mounted condition in the protector. Arc protectors 9 are mounted on the protector. 2, it will be seen that the coupling bridge, with its transverse part 5, is attached to an insulating coupling support 10. Hereby, the sphere ball 8 of the coupling bridge engages in position fixing over a corresponding hemispherical projection 11. The fastening is resiliently elastic by means of a compression spring 13. The compression spring 13 is set over a screw bolt 14 extending through the long hole 7 in the cross member 5 and a hole 12 in the coupling piece carrier 10. It presses on one side over a pressure cap or cap 16 on the cross section of the coupling piece carrier and on the other side over a further pressure cap 30 or cap 15 against an adjusting nut 17 for the bolt by which the pressure can be varied. By means of the pressure of the compression spring 13, the contact pressure of the contact piece 4 relative to the fixed contact piece 18 can be adjusted. The insulating material, e.g., press fabric, contact piece carrier 10, has 35 creep elongating longitudinal ribs 19 and transverse ribs 20. These comprise the transverse portion 5 of the coupling bridge and separate it from its own attachment surface 21 of the flap anchor 22. The attachment is effected by screw bolts 23 to which flap anchor 22 5 143190 1 has two holes in which two threaded bushings are inserted into the fastening surface. Flap anchor 22 is knife-bearing. It rests on the end face of a magnetic frame 25 and is secured by means of an associated bracket 26, an angle 27 and a support plate 28. Through a bolt 29 extending through the support plate 28 and the angle 27 with adjusting nut 30 and compression spring 31, the reset force of the magnetic system adjustable. As the operating magnet there is a DC magnet 24, for example to 24 volts, whose connections are indicated by 24a. Further, there are two auxiliary couplers indicated at 42 and 43. Each branch 2 of the coupling bridge projects through narrow slots 32 into a particular arc chamber 9. In the region of the twisted center portion 3, the branch in slot 32 projects through the wall of the arc chamber, and the motions of the coupling-15 bridge 1 occurs at this location across the narrow sides of the turned branch. The slot 32 extends to the bottom of the arc chamber 9 mounted on the carrier 33 for the fixed contact pieces 18. Connections for the fixed contact pieces are indicated by 34 and 35. The slot 32 is at the same time exhaust opening at the AC voltage decoupling and thus constitutes the output of the half of the arc. . The main blowout opening of the arc for direct voltage and alternating voltage of the second half-wave is indicated by 36. The arc chambers are composed of half-shells and can be inserted over the contact elements 4, 18. By means of the twisted slot 32 for the twisted latch 3, into the outer side guide slots 37 9 engages narrow fan plates 38 of a stationary permanent magnetic fan system. The permanent magnets 39 thereto are fixed in the carrier 33 for the fixed contact pieces 18 and connected to the blowing plates 38.

The arc chambers 9 are secured by engagement, to which, with the ends of the blower plates, riveted spring clamps 40 engaging after the application of the arc chambers are riveted. The two arc chambers for the two branches of the coupling bridge are placed directly next to each other only separated by an additional insulation wall 4l extending above the chambers. Thus, even at high coupling effects, the coincidence of the arcs in the two chambers is excluded. The connections are extra insulated.

Each arc chamber 9 advantageously has two half-chambers, whereby the arc path through the main blowout opening, conditioned by the magnetic blowout of the DC voltage decoupling and one of the two half waves at the AC voltage decoupling, is reserved. This one half chamber is characterized by a larger volume and a longer arc path. The smaller half-chamber with approx. a quarter of the arc path is sufficient to take over the second half-wave by alternating voltage decoupling.

A quench is certainly happening in the second half.

A noticeable influence on the contact bridges at the arc-10 does not occur.

The invention has succeeded in producing an air guard. that can handle the rough run with the usual four cross-border traffic 3kV and 1.5kV 15 DC and 1500 V 50 Hz and 1000 V 16 2/3 Hz. In this way, the life of the coupling games and contact life of the known protectors can be increased by the factor 10. A mechanical life of 10 'coupling games and 2 x 10 couplings for the contacts can be obtained.