SU1210152A1 - Vacuum circuit breaker - Google Patents

Description

The invention relates to electrical engineering, in particular to vacuum switching devices.

The aim of the invention is to improve the reliability of the switch in operation.

FIG. 1 shows a vacuum circuit breaker with the additional chamber turned off; in fig. 2 - a device for limiting the flow when the position of the additional chamber is on.

Each phase of the puller consists of two vacuum interrupter chambers; the main 1 and the second 2. The movable contact of the main chamber is electrically connected to the load li by the fixed contact of the additional chamber. At the same time, through the insulating cable 3, it is connected to the lever of the main shaft 4 in the switch, which has a kinematic connection with the drive 5. The movable contact of the secondary camera through the insulation cable 6 is connected to the additional lever shaft 8, which is connected through the link mechanism 9 by the main shaft -1 switch. To relieve the additional camera, the latch 10 is mounted. The latching device 7 is equipped with a spring 11 placed between two plates 12 and 13, and the plate 13 is rigidly connected to the insulating rod 6 passing inside the spring 11. and the plate 12 is installed with an emphasis on the collet 14 tons 6 and has a kinematic connection with the lever 15 of the additional shaft 8. When the additional chamber 2 is inserted between the plate 13 and the frame 16, you

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the key is formed a gap equal to the working stroke of the movable contact additional- 1: OY camera.

The switch works as follows.

At the command “Turning on, the actuator 5 turns the shaft 4, while through the pull 3, the main chamber switches on and the shaft 8 rotates through the rocker mechanism. The lever 15 acts on the plate 12. moves the stroke limiter 7 and the insulation pull 6 The movable contact of chamber 2 until the plate 13 stops in frame 16. Chamber 2 is turned off, and lever 15 continues moving, moving plate 12 further and compressing spring 1 1 until the trigger 10 is activated.

By the command "Disconnecting the actuator 5 turns the shaft 4 in the opposite direction, turning the main camera 1 off, the first latch is knocked out at the end of the shaft rotation and the additional contacts are closed at the end of the switch and the pressure difference in the field and surrounding space. cameras.

The invention provides an increase in the attainability of the apparatus by increasing the time over. The delay between turning off and turning on the main camera and allowing the use of additional vacuum cameras as short-circuited switches, which are interchangeable for operation in njaxes, as well as using cameras with different working strokes of the moving contacts.

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Syst; 111its, - | ь IO. Torshin

Rezhaktor O. Yurkovetskaya Tehre.a I. VeresKorrektor. Zimokosov

Order .524 / 56 Circulation 644 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

VACUUM CIRCUIT BREAKER, comprising a frame, a main and additional arcing chambers per phase with movable and fixed contacts with a mechanism for temporary coordination of operation, made in the form of two systems of levers and rods, providing reciprocating movement of the movable contacts of the cameras interconnected by means of a link and an adjustable latch, characterized the fact that, in order to increase reliability in operation, it is equipped with a contact limiting device installed between the traction of the additional camera and oh and formed as a spring, placed between two plates, one of which is rigidly connected with the rod extending inside the movable contact of the additional chamber and the other set, with an emphasis in the thrust shoulder and is kinematically coupled with a lever shaft of the main chamber. fig.! 12 ΙΟΙ 52