SU452869A1 - Trigger device for tank oil switch - Google Patents

Description

(54) DRAGGING DEVICE FOR

TANK OIL SWITCH

one

The invention relates to the field of high-voltage electrical equipment, in particular, to arcing devices for tank oil circuit breakers with a continuous arc break.

Arc-suppressing devices are known for oil circuit breakers with multiple arc failure, containing an insulating cylindrical body in which a series of movable contacts mounted on an insulating frame and a number of fixed contacts are installed.

However, in the known arc-suppressing devices, a complex and inconvenient repair and adjustment of the contacts.

In the proposed device, in order to eliminate the above disadvantages, insulating spacers are installed on the bottom of the cylindrical body, between which fixed contacts made spring-loaded, the fixed contacts being connected in pairs with the corresponding moving contacts by means of a flexible connection.

FIG. 1 shows an arc suppression device for a tank oil switch in general form; in fig. 2 shows the removable unit with movable fixed contacts.

The proposed device includes an insulating cylinder 1, a holder 2, a removable unit 3, and an arc-suppressor} known gratings 4.

The take-off unit (Fig. 2) includes spring-loaded stationary contacts 5; insulating struts 6; movable contacts 7 mounted on an insulating frame 8; bottom of chamber 9; breaking spring 10 and flexible connections 11.

The fixed contacts are mounted on insulating struts 6, which are rigidly fixed on the bottom of chamber 9. The movable contacts 7 are spring-loaded relative to the bottom of chamber 9 by a spring 10 and are connected in pairs with fixed contacts 5 by flexible connections 11. When assembling the remote control, the detachable unit 3 is inserted inside Cylinder 1. At this bottom of the chamber 9 is attached to the insulating cylinder 1, and the upper ends of the insulating spacers 6 abut against the holder of the camera 2. Then, suppressive grids 4 are inserted.

Arc suppressor device works as follows. When the switch is switched on, the movable contacts 7 move upwards to the circuit breaker with fixed contacts 5, thereby creating a closed circuit for current to flow through the arcing device. The release spring 10 is then compressed.

When the switch is disconnected, the moving contacts 7 move downwards under the action of the tripping spring 10, arcs are formed between each moving contact and the corresponding fixed contact, which are extinguished in the arc arresters 4 (to simplify the drawing, the arc arresters are removed).

The advantages of the proposed device over the known ones are the absence of a rigid connection between the fixed contacts and the insulating cylinder, which allows them to be removed together with the moving contacts from the insulating cylinder for carrying out repairs and joint adjustment.

Subject Images

et e and

An arc extinguishing device for a tank oil switch with multiple arc discharges, comprising an insulating cylindrical housing, in which a series of movable contacts mounted on an insulating frame and a series of fixed contacts are installed, characterized in that, in order to simplify repair and adjustment of contacts, Insulated spacers are installed on the bottom of the cylindrical body, between which fixed contacts bridged with spring-loaded ones are fixed, and fixed K (; contacts are connected in pairs with the corresponding yuschimi movable contacts through a flexible linkage.

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