SU509910A1 - High Voltage Auto Gas Switch - Google Patents

Description

one

The invention relates to high-voltage auto gas switches used to protect power transformers and partitioning: distribution networks of 35-220 square meters.

High-voltage autogas switches are known, which contain an arc-suppressing chamber made of solid insulating gas gas of a non-producing material, made in the form of two successively connected ones. tubes with channels of different cross sections, and contact CHcreNry installed in the narrow channel tube.

However, the known switches of this type have a limited rated current, insufficient thermal stability and large dimensions.

The proposed switch to eliminate these disadvantages is provided with an additional contact system with

the breaking force is lower than the main one, and the narrow-channel tube system supplies 1K1 to the jag lock

FIG. 1 shows a switch-off camera with the location of the switch

Eugene contact systems and magnetic lock in cross section; FIG. 2 shows a magnetic lock device.

Claims (2)

Arcing device off; The body is a series connection of tubes of large 1 and small 2 diameters, made of solid insulating gas-generating unit 5 material. The upper part of the chamber is quenched, the lower part is open. Her: Metizing is done by stopper 3, by contact stopper 4. Pergza is screwed into a metal i.e. head 5, inside of which there is a magnet lock 6 and upper contact system 7. Bottom a tube is screwed into it 2. Contact system 7 with contact system 8: connected by a Tibka current-carrying link 9.: Contact system 8 is located at the entrance to the Tf) y6Ky wide channel and connected to the switch contact knife 1O of the switch current with a flexible current - communication 11 The knife 10 captures the lower end of the communication end 11 and, under the action of its own operating position, pulls the current-carrying part of the switch, consisting of contact tefobki 4, screw the front end of the switch into the top metal; the end of the magnetic lock 6, magnetic; ka 6, the upper contact system 7, the current-j of the leading communication 9, the lower contact system 8 of the current-carrying communication 11. The contact systems are held; and-; vac) ts. c, drmoshchiyu- special- springs. Effort, combed opening: the bottom of the lower contact system 8, is significantly superior; a similar force of the upper contact system 7 walks. The latter has a more powerful socket socket. The magnetic lock consists of a coil 12.1 embedded in a plastic case 13. Inside the case there is a core 14; the upper position raised by B} is spring 15. Its lower end is equipped with a ratchet device 16 consisting of two pivots. replenished ratchet grips attracted to each other by a spring 17. - At the upper entrance of a magnetic osorpus. The lock has a massive metal ring 18 into which a screw plug 4 is screwed onto the thread 2 W. The ring is metallic with the beginning of coil 12. At the lower end of the case, cut by a longitudinal groove, there is a massive socket 19 of the top contact system 7. Lest i-i are tallically connected to the end of the coil 12.i The compressive force of the socket 119 is provided by an annular n; dinner 20. The cylindrical part 21 of the contact system 7 on the upper end has a cone, and an annular pro; the point forming the collar. i The coil 12 is the current carrying part of the shutdown circuit. The branch of its chfovod provides the requirements of the thermal stability of the switch. The above switch works as follows. With the passage of a fault current not exceeding the magnitude of the current being switched off in the narrow channel of the tube. 2, at the command of the relay protection, a switch actuator operates, which acts on the knife 10. The latter, in turn, affects the current-carrying connection 11.9. Contact system 7 is disconnected, requiring less opening force.: An electrical arc is formed. Under the influence of its temperature, gas is generated from the walls of the tube 2. A longitudinal gas duay is created. The conductor connection under the action of the knife and gas blowing forces outwards. Blowing provides an arc--} arc arc. . When disconnecting the currents exceeding the switching capacity of the tube 2, the core 14 of the magnetic lock is set in motion. 6. The ratchet grips of the device 16 are located on the cylindrical part 21 of the upper con-stroke device 7 and capture it. The action of the chopping contact knife, IQ-on current-carrying connection, causes paa-j closure of the lower contact system 8 and the disconnection of the current of damage occurs in the channel channel 1. Arc arc is also provided by creating a longitudinal gas blowing. The invention includes a high-voltage autogas switch containing an arc-suppressive chamber made of solid insulating gas-generating material, made in the form of two successively connected tubes with channels i of different sections, and a contact system installed in a narrow-channel tube, characterized in that it increases the rated current to thermally stability and size reduction of the device, the switch is equipped with an additional contact system with a force that can be larger than the main one, and KOHTaKow is si The narrow channel pipe has an electromagnetic lock. Hfiv ./