DE1248136B - Circuit breaker for high and extremely high electrical voltages - Google Patents

Description

Circuit breaker for high and extremely high electrical voltages The invention relates to a circuit breaker for high and extreme high electrical voltages, consisting of several complete and identical ones Extinguishing chambers, which are interconnected and longitudinally in a single vertical plane lying vertical axes are arranged, with each extinguishing chamber its own has a special vertical axis.

There are switches for high voltages known, the arcing chambers with have inclined and / or horizontal axis, which are connected in series are. It is well known that the operation of such arcing chambers must be absolute simultaneity of the controller. With switches, the arcing chambers with inclined or horizontal Axis or some chambers with an inclined axis and other chambers with a horizontal axis however, such simultaneity of control is extremely difficult to reach.

Other switches for high voltages have arcing chambers with vertical Axis arranged, either side by side or one above the other. Such switches have an excessively large space requirement either lengthways or height on.

With another switch, the three arcing chambers are parallel and arranged perpendicular to the earth, with the controls of the movable contacts in are mounted in a single housing. However, each of the three arcing chambers is in one arranged different height, so that to support the same a larger number of support insulators is required. In addition, this switch also takes up a lot of space in terms of height.

The object of the invention is, in a Switches with the same power as those required for the arrangement of the arcing chambers Reduce space requirements to a minimum.

This object is achieved according to the invention in that the switch comprises at least one pair of extinguishing chambers, the elements of which on a mutually different Are arranged level, as well as at least one arcing chamber pair, the elements on are arranged on the same level.

In a further embodiment of the invention, the switch comprises, for example three arcing chambers, two of which form the pair, its elements on the same Level are arranged, while the third arcing chamber together with one of the two first-mentioned arcing chambers form a pair, the elements of which are on one of each other different level are arranged. The switch can also have three pairs of arcing chambers comprise, of which elements are arranged on different levels from one another formed pairs the higher elements are arranged outside.

If the switch consists of four pairs of arcing chambers, the elements are each pair arranged at different heights, with the different pairs in three axes of symmetry that are parallel to one another and that follow one another in the same vertical plane are distributed.

The vertical arrangement of the arcing chambers has the double advantage on the one hand to take up little space and on the other hand a uniform mechanical and to allow electrical behavior of the individual arcing chambers. In case of mechanical control of the switch ensures only the above marked arrangement, the simultaneous opening and closing of all in Series of switched arcing chambers, which is a fundamental condition. the The number of load-bearing insulators required to support the arcing chambers is ge not only reduced, but also included in the length of the space required, without any of the elements sticking out. Also the fact that the higher ones Elements of the extinguishing chamber pairs are arranged on the outside, means an advantage because the fastening points of the supply and discharge lines for the current the maximum distance exhibit from the ground. In contrast to the known arrangements, the number is also those connected in series Extinguishing chambers practically unlimited. In the end the switch designed according to the invention results in better insulation against ground, as well as a stronger protection against the overvoltages coming from outside.

In the drawing, some are exemplary embodiments of the circuit breaker shown according to the invention.

1 shows a front view of a switch intended for high voltages, which switch is formed from three arcing chambers connected in series; F i g. 2 shows a side view, and FIG. 3 is a plan view of the switch; F i g. 4 shows the support column according to FIG . 1 and the insulating pull rod for the same; F i g. 5 shows the front view of a switch intended for high voltages, which is formed from six arcing chambers connected in series; F i g. 6 shows a switch consisting of eight arcing chambers.

In the F i g. 1, 5 and 6 , 1 and 2 denote the supply and discharge lines for the current and 3 and 6 denote the electrical connections between the extinguishing combs 4 and 5 or 5 and 7 of the circuit breaker.

8 are the same interruption chambers of the arcing chambers 4, 5 and 7 and 9 is the trigger spring for switching each of the arcing chambers.

The hollow porcelain insulator is designated by 10 , which serves as a support part for the interruption chamber 8 of the quenching chamber 7. In the inner hollow chamber of this insulator, which is filled with oil or gas, runs an insulating pull rod which actuates the movable contacts of the quenching chamber 7.

The arcing chambers 4, 5 and 7 are arranged on a metallic housing 11 and are connected to one another by means of a mechanical connecting member 12.

The hollow insulating support column, filled with either oil or gas, is denoted by 13 , in which the insulating pull rod 19 is mounted, which serves to load the release springs 9 when tensioned or to secure the shut-off in the closed position of the contacts when compressed.

The control housing 15 of the switch, which is at ground potential, is built into a metal grid 14 which supports the insulating support columns 13 and 16.

At 17, the capacitors (resistors or reactance) are referred to the single pole of the breaker switch for dividing the voltage on JE.

A current transformer with an insulator associated with the same can form a complementary part of the switch.

The circuit breaker according to the invention therefore comprises one or more metallic housings 11, insulated from the floor, on which the arcing chambers. 4, 5 and 7 are mounted with such isolation distances that a flashover of the voltage between different energized parts of different potential is secured, as well as the insulating support columns 16, which are preferably made of porcelain, which are used to secure the insulation against the mass of the energized standing parts are mounted.

Each arcing chamber consists of the interruption chamber 8 and the possibly assigned insulating porcelain housing 10, the contacts, the arc extinguishing agent and a release spring 9 for switching the arcing chamber.

All release springs 9 are actuated simultaneously by known connecting rod hand levers which are mechanically connected to one another and which are controlled by means of an insulating pull rod 19 actuated by pulling or turning. The pull rod itself is mechanically connected to the control housing 15 which is at ground potential.

The mechanical connection between the arcing chambers provides a guarantee for the simultaneous opening of the contacts of all interruption chambers of the switch.

The row arrangement of the fire extinguishers, each of which is inside of the room has exactly the same geometric position and has its own release spring is provided, also provides the guarantee that the contacts in all connected in series Interrupting chambers are closed at the same time, as well as that in it forming arch is quickly erased.

Claims (2)

Claims: 1. Interrupter switch for high and extremely high electrical voltages, consisting of several complete and mutually identical arcing chambers, which are connected to one another and arranged along vertical axes lying in a single vertical plane, with each arcing chamber having its own special vertical axis, characterized in that, that the switch comprises at least one quenching chamber pair, the elements of which are arranged on a different level, and at least one quenching chamber pair, the elements of which are arranged on one and the same level. 2. Interrupter switch according to claim 1, characterized in that the same comprises three arcing chambers, two of which form the pair, the elements of which are arranged on the same level, while the third arcing chamber together with one of the two first-mentioned arcing chambers forms a pair whose elements are on are arranged at a different level ( FIG. 1). 3. Interrupter switch according to claim 1, characterized in that the same comprises three pairs of extinguishing chambers, the higher elements being arranged on the outside of the pairs formed from elements arranged on different levels ( FIG. 5). 4. Interrupter switch according to claim 1, characterized in that the same consists of four pairs of arcing chambers, of which the elements of each pair are arranged at different heights, the different pairs being distributed in three mutually parallel and successive axes of symmetry (A, B, C) in the same vertical plane are ( Fig. 6). 5. Interrupter switch according to claim 1, which comprises at least one metallic and isolated from the ground housing on which the arcing chambers are mounted with such isolation distances that the parts carried by insulating support columns are secured against voltage flashover at different potentials, these insulating support columns on one or more Metal grids are mounted in order to ensure the isolation from ground of the live parts, characterized in that each extinguishing chamber has a release spring (9) for switching the extinguishing chamber, with all release springs (9) connected to one another by means of a mechanical connecting member (12) which enables the springs to be relaxed at the same time and which is actuated by an insulating pull rod (19) which is mechanically connected to the control housing (15) which is at ground potential. 6. Interrupter switch according to claim 5, characterized in that the insulating pull rod (19) is actuated by pulling or rotating, the mechanical connection between the extinguishing chambers ensuring the simultaneous closure of the contacts in all interruption chambers, as well as the blocking of the contacts themselves in the closed position. 7. Interrupter switch according to claim 5, characterized in that the release springs (9) are actuated by connecting rod hand levers. Considered publications: German Auslegeschriften Nos. 1023 508, 1038 153, 1 060 451, 1062 311, 1090 290; Swiss patents Nos. 239 829, 243 709, 325 640, 328 233, 331003; French patents nos. 1 014 134, 1098 172, 1 112 795, 1 141 712, 1151847, 1151848, 1 184 031, 1 242 053, 1 244 987, 1 247 451; French patent specification No. 65,978.