Vacuum interrupter for vacuum circuit breaker. RU patent 2507624.
| Method for training of contact gap for vacuum circuit breakers by high voltage / 2504857 Training method is implemented by direct-current high voltage feeding to complete gap between contacts in stages starting from 0.3-0.5 of rated operating voltage. Simultaneously permanent magnet field is created along direction of the gap and its intensity value is increased smoothly from zero up to prebreakdown current moment of about 0.6-0.8 of breakdown current at test voltage. The gap is hold at set voltage equal to 2-3 times of prebreakdown current measured at the beginning till drop, at the first training stage. Magnet field intensity is decreased up to zero and the next stage of training voltage is set. Value of field intensity is increased again from zero up to prebreakdown current available at the first stage. The above cycle is repeated at the next stages. At the last stage training voltage is set as 1.2-1.5 times bigger than testing voltage. The process is repeated at reverse polarity of high voltage applied to the gap and reverse direction of permanent magnet field. |
 Method of making contacts of vacuum arc-quenching chambers / 2493290Powdered mixture and a workpiece of a high-electroconductivity material are placed in a vacuum chamber, where the powdered mixture is deposited in form of a coat on the workpiece by electron-beam deposit welding in a vacuum. Further electron-beam remelting of the entire volume of the fused coating is carried out in a single process cycle with deposit welding. |
 High-voltage vacuum circuit breaker / 2474905Invention relates to high-voltage vacuum circuit breakers, in which an electromagnet control system of neutral type is used, and in a high-voltage vacuum circuit breaker, movable contacts fixed via an insulator on electromagnet anchors are arranged as rigid, and contacts fixed on high-voltage bushings are arranged as elastic in the form of thin plates. In parallel to elastic contacts there are rigid plates installed in the form of thin plates on high-voltage bushings at the side of movable rigid contacts. Besides, movable rigid contacts are arranged as composite, namely, their first (contacting) part is made of a non-magnet material with low disposition towards diffusion welding in high vacuum, for instance, from molybdenum or tungsten, and their second part is made of a material having high heat conductivity, for instance, from copper, and is installed inside the body of the first part of movable contacts by more than a half of its thickness. |
 Vacuum circuit breaker / 2468460Vacuum circuit breaker contains housing divided by high-voltage insulator forming arc-extinguishing chamber with axial movable and fixed electrodes. Movable electrode is attached to housing by current lead and metal corrugation separating chamber vacuum environment from ambient environment, fixed electrode is attached by its current lead to housing of arc-extinguishing chamber via separating insulator. Electrodes are provided with annular contacts. Electrodes are designed as disks made from nonmagnetic material with slots in the form of Archimedean spiral, at that angles of spiral radius rotation have reverse direction, fixed electrode has spiral radius rotation φ>0 and movable electrode has spiral radius rotation φ<0.3. |
 Contact system of vacuum arc-quenching chamber for voltage of 100 kv / 2464663Contact system of a vacuum arc-quenching chamber comprises mobile and fixed contact units, every of which consists of a current contact jaw in the form of a rod, a contact part with a flat surface of contact, an inductor in the form of a split ring from a material with high electric conductivity and a bushing from a material with low electric conductivity. The inductor and the bushing are arranged between the contact part and the current contact jaw and are connected with them. The bushing is installed inside the inductor and coaxially with it. The contact part is shaped as a cup turned upside down with a side cylindrical surface covering the inductor in the form of the split ring. A transition between the flat surface of contact and the side cylindrical surface is arranged with a radius of rounding of at least 5 mm. As a result at edges of the contact part and ring inductor there is no high intensity of electric field, which reduces or eliminates probability of vacuum gap breakthrough between opened contacts. Besides, vacuum breaker design will also become more compact and less material-intensive. |
 Vacuum circuit breaker / 2462780Vacuum circuit breaker includes housing separated with high-voltage insulator, thus forming arc-extinguishing chamber with axial movable and fixed electrodes. Movable electrode is attached to housing by means of current lead and metal corrugation that separates vacuum medium of the chamber from environment. Movable and fixed electrodes are equipped with annular contacts in which equal radial slots which are uniformly located in circumferential direction are made on the side of their being attached to the corresponding electrodes. In slots of annular contacts there inserted are U-shaped constant magnets which are symmetrical relative to contact surface of contact connection and connected to each other which the circuit breaker is on. Polarity of poles of magnets which are located opposite each other on movable and fixed annular contacts is the same. |
 Contact device for vacuum arc-quenching chamber / 2449405Contact device for vacuum arc-quenching chamber contains moving and fixed switching contacts each one of which consists of arc-resistant contact pad connected with projection of disk base, herewith, base projection is made as spatial segment, and base and pad are enveloped by collar jointing the disk with projection and arc-resistant contact pad by this providing rigidity of switching contact. |
 Vacuum current switch / 2400855Proposed switch comprises case separated by high-voltage insulator to make arc extinguish chamber with axial movable and fixed electrodes. Movable electrode is secured to said case by current lead and metal corrugation that separates chamber vacuum medium from ambient medium. Electrodes are furnished with circular contacts. Fixed circular contact has radial grooves arranged along the circumference to receive permanent "П"-like magnets to form magnetic system. Contact surface of circular contacts along electrodes axes are located on the level of magnet pole planes. Separating isolators are arranged between electrode and permanent magnets and between circular contact and permanent magnets. |
 Exchange device / 2362231Invention belongs to the field of high currency energy impulse electrical energy technology. The exchange device consists of a vacuum chamber, with two wires inside, stationary and moving electrodes, each in contact with two, identical contact elements. Each contact element is electrically joined to the wire with the aid of the appropriate current contact jaw. Furthermore, each current contact comprises a braced, current distributor. Each braced, current distributor includes between the primary and secondary current distributor a vertical outer strip. The horizontal, middle strip is in the form of a coil whose rings are unidirectionally turned down beneath the direct corner in the direction of the exit wire. The bent, outside end of the coil is coupled beneath the direct corner with the second outer strip, which is in the shape of an right-angled bracket, whose side flange is parallel to the plane of the coil in the central part and located between the orthogonal to it and parallel between the primary and secondary lateral elements. Furthermore, the length of the accompanying bent, internal ring of the wire from the secondary lateral element is less than the length of the primary lateral element for the length of the primary outer section of the braced, current distributor. |
 Commutation contact for vacuum arresters / 2329579Commutation contact for vacuum arresters with radial or axial magnet field contains contact board and pot-shaped contact holder with coil for creation of magnet field, which is formed by azimuthal slots of pot-shaped contact holder wall. External diameter of pot slotted wall is less than the diameter of contact board installed on it. Between contact board and base of contact holder ring-shaped support body is inserted, which embraces contact holder in at least slotted area. "Vacuum" gap is installed between external support body and slotted wall of pot. |
 Method for reducing stray pre-breakdown currents in high-voltage vacuum gaps / 2287872Proposed method for enhancing electric strength of high-voltage vacuum gaps involves introduction of gaseous-state molecules of high polarizing ability in vacuum gap to form dynamically stable monomolecular films preventing unwanted field-effect emission on surface irregularities (such as microscopic points) of electrodes. Molecule source is sublimation of solid material in vacuum gap. |
 Vacuum power switch / 2291513Proposed switch has arc-control chamber with chamber-mounted axial movable and fixed ring-contact electrodes and magnetic system incorporating permanent magnet disposed along chamber axis on fixed electrode end and used to produce radial field across axis. Central part of chamber disposed inside fixed contact is electrically insulated. |
 Method for pre-burning contact gap in vacuum switches by means of high voltage / 2305344Proposed method that can be used for manufacturing high-voltage vacuum switch and its contact gap pre-burning with high voltage in the course of vacuum-engineering treatment includes voltage application across open contacts and across spark-gap control electrode connected in parallel with them simultaneously; spark-gap firing voltage is supplied on occurrence of high-power breakdown or gaseous discharge between contacts from resistive voltage divider connected in series with contacts to spark-gap control electrode. |
| Method for checking contact pressure in vacuum switches / 2313846 Proposed method for controlling contact pressure in vacuum switches incorporating flexible and rigid contact bridge with built-in nonpolarized electromagnetic control system upon their heat treatment in vacuum and tapping involves measurement of closed contact resistance at voltage across electromagnet control winding at least 1.5-2 times lower than rated value, comparison of measurement result with resistance at same voltage across control winding of switch having optimal contact pressure, and evaluation of contact pressure deviation in switch under check from reference value. |
 High-voltage vacuum switch / 2314588Proposed switch has electromagnetic control system incorporating polarizing permanent magnet that functions to hold movable contact in two extreme positions upon deenergizing electromagnet control coils. Flexible ribbon contact whose surface protrudes above contacting surface of rigid fixed contact by at least 1-2 of contact gap tolerance is installed in parallel with each of rigid fixed contacts of switch. Flexible ribbon contacts are disposed on side opposite to contacting surface of rigid fixed contacts and are tightly secured on their leads. Top part of flexible ribbon contacts is bent out at their contacting point in direction opposite to additional U-shaped movable contact. Flexible ribbon contacts are made of heat-resistance highly conductive nonmagnetic material characterized in low susceptibility to diffusion welding in high vacuum (for instance, molybdenum) and can be made in the form of stack of thin plates. |
 Contact section with rounded edges of slits / 2322725Proposed contact section designed for use in contact system for current interruption in distribution network at operating voltages up to 27 kV has contact holder with hollow cylindrical part of wall as well as base wall and contact disk longitudinally disposed opposite base wall. Slits with rounded edges are provided for producing magnetic field, their radius being chosen depending on distribution network voltage U, kV, from following expression: R ≥ 2 × 10-4U2 + 8.5 × 10-3U + 0.34, where R is given in millimeters. |
| Commutation contact for vacuum arresters / 2329579 Commutation contact for vacuum arresters with radial or axial magnet field contains contact board and pot-shaped contact holder with coil for creation of magnet field, which is formed by azimuthal slots of pot-shaped contact holder wall. External diameter of pot slotted wall is less than the diameter of contact board installed on it. Between contact board and base of contact holder ring-shaped support body is inserted, which embraces contact holder in at least slotted area. "Vacuum" gap is installed between external support body and slotted wall of pot. |
| Exchange device / 2362231 Invention belongs to the field of high currency energy impulse electrical energy technology. The exchange device consists of a vacuum chamber, with two wires inside, stationary and moving electrodes, each in contact with two, identical contact elements. Each contact element is electrically joined to the wire with the aid of the appropriate current contact jaw. Furthermore, each current contact comprises a braced, current distributor. Each braced, current distributor includes between the primary and secondary current distributor a vertical outer strip. The horizontal, middle strip is in the form of a coil whose rings are unidirectionally turned down beneath the direct corner in the direction of the exit wire. The bent, outside end of the coil is coupled beneath the direct corner with the second outer strip, which is in the shape of an right-angled bracket, whose side flange is parallel to the plane of the coil in the central part and located between the orthogonal to it and parallel between the primary and secondary lateral elements. Furthermore, the length of the accompanying bent, internal ring of the wire from the secondary lateral element is less than the length of the primary lateral element for the length of the primary outer section of the braced, current distributor. |
| Vacuum current switch / 2400855 Proposed switch comprises case separated by high-voltage insulator to make arc extinguish chamber with axial movable and fixed electrodes. Movable electrode is secured to said case by current lead and metal corrugation that separates chamber vacuum medium from ambient medium. Electrodes are furnished with circular contacts. Fixed circular contact has radial grooves arranged along the circumference to receive permanent "П"-like magnets to form magnetic system. Contact surface of circular contacts along electrodes axes are located on the level of magnet pole planes. Separating isolators are arranged between electrode and permanent magnets and between circular contact and permanent magnets. |
| Contact device for vacuum arc-quenching chamber / 2449405 Contact device for vacuum arc-quenching chamber contains moving and fixed switching contacts each one of which consists of arc-resistant contact pad connected with projection of disk base, herewith, base projection is made as spatial segment, and base and pad are enveloped by collar jointing the disk with projection and arc-resistant contact pad by this providing rigidity of switching contact. |
FIELD: electricity.
SUBSTANCE: attracting element is provided, made from ferromagnetic material, to form a space between a fixed electrode and a movable electrode to attract a radial magnetic field generated in radial direction between a fixed electrode and a movable electrode by means of an attracting element. On the outer circumferential surface of the isolated container there is a support groove formed in a stepwise manner to support an attracting element inserted in it, in the axial direction, which is a direction for movement of a movable electrode. Height of the attracting element in the axial direction is not less than the maximum distance between the fixed electrode and the mobile electrode. At the same time a component of the radial magnetic field in a common horizontal direction between a fixed electrode and a mobile electrode may be increased.
EFFECT: increased moving force of an arc by minimisation of an arc in a not strictly horizontal direction.
The technical field
The present invention relates to the vacuum breaker to perform the operation on redemption arc in the vacuum switch, and more precisely to the vacuum breaker vacuum circuit breaker for strengthening the radial magnetic field, affecting the driving force of the arc.
Prior art
In General, a vacuum breaker in a vacuum breaker is the main a device used in the vacuum switch, vacuum switch, vacuum contactor, etc. for load current interruption or short-circuit current in the energy system. Vacuum switch, which performs the role of the control transmission of electric energy and the protection of energy system has many advantages, such as high breaking capacity, high reliability and high resistance, excellent ability to installation even in a small space for installation etc. and, thus, its scope is extended so that includes medium voltage and high voltage. Moreover, the breaking capacity of switches also increased in proportion to the increasing size of the industrial capacities.
Vacuum breaker in the vacuum switch works through the use of magnetic fields generated by the current flowing through its internal electrode structure during the interruption of the short-circuit current. On the basis of the method of generating a magnetic field, the vacuum breaker can mainly be divided into two types: axial magnetic field (AMF) and the radial magnetic field (RMF).
Radial magnetic field can represent a way of allowing arc, concise pinch-effect, move during the generation of arc, whereby prevent damage to the contacts, which may occur during the contraction of the arc, having high temperature, between the contacts.
Vacuum breaker may have advantages in the aspect of the arc control when it has a high driving force behind the arc. The driving force of the arc may be generated through the interaction between the density (J) of the current flowing in the arc, and magnetic induction (B) of the magnetic field generated by the current flowing through the clamp is not its component F=J X B where the driving force is the arc acts in a direction perpendicular to the plane formed by two vectors, which are referred to as current density and magnetic induction). Accordingly, the driving force of the arc may be increased due to increase of the current density, or density of magnetic induction.
In Fig. 1 shows a longitudinal section of the vacuum interrupter of the prior art.
Referring to Fig. 1, in the vacuum interrupter is activated prior art insulated container 1 is sealed airtight cover 2 stationary part and pressure cap 3 mobile part stationary electrode 4 and moving electrode 5 placed opposite each other in an insulated container 1, to be in contact with each other, the internal screen 6 surrounds the space between the stationary electrode 4 and movable electrode 5, stationary shaft 4A stationary electrode 4 attached to and merged with an airtight lid 2 stationary part, to connect to the external side, as a moveable shaft 5A mobile electrode 5 is combined with the possibility of sliding sealed 3 movable part, to connect to its outer side.
In addition, flexible tube screen 7 fixed and combined with flexible shaft 5A mobile electrode 5, flexible tube TV 7 and movable flange 3 provides a flexible tube 8 so that moving electrode 5 and mobile shaft 5A can move, being in a sealed state inside the stand-alone container 1.
The internal screen 6 is located in a symmetric way, when both the electrode 4, 5 fully open and the metal vapor generated during the generation of arc operations chain, condense on it, thus preventing the decrease of electric strength, when metal particles pair are attached to the inner surface of the stand-alone container 1.
The above vacuum breaker prior art may generate a magnetic field in the radial direction (radial distribution relative to the direction of movement of mobile electrode) by stationary electrode 4 and mobile electrode 5, and the current flowing through an arc, electrically connects the two electrodes 4, 5 with each other during the generation of the arc. The magnetic field produces a driving force due to the interaction with the current flowing from stationary electrode 4 to the movable electrode 5, the electrodes are placed in fixed positions, but an arc moves, when produced the driving force. The direction of movement of the arc should be the direction perpendicular to the plane formed by two vectors, which are defined as current and magnetic field, namely, direction along the circumference (i.e. direction of rotation around the shaft) on the basis of the point of contact, for example, the electromagnetic force acting on the stream (in the direction perpendicular to the surface of the paper in the drawing).
However, in the above-mentioned vacuum interrupter is activated prior art portion of the arc may not follow in the direction perpendicular to the plane formed by the current and magnetic field (also referred to as "strictly horizontal direction")and to follow the near strictly horizontal direction, i.e. inclined to spread the direction of the drawing (also referred to as "not strictly horizontal direction"). Not strictly horizontal direction can lead to a weakening of the driving force of the arc, as well as losses due to dispersion flow compared with a radial magnetic field in strictly horizontal direction, enhances the driving force behind the arc.
A brief description of the nature of the invention
The objective of this invention is to provide a vacuum breaker vacuum circuit breaker for minimizing arc not in strictly horizontal direction, thus strengthening the driving force of the arc.
In order to achieve these and other benefits in accordance with the designation of the invention, as embodied in the common terms disclosed in the materials of this application, provided a vacuum breaker in the vacuum switch, and a vacuum breaker contains: sealed insulated container; stationary electrode is mounted in the inner part of the isolated container; and movable electrode is located opposite the stationary electrode, and made slidable relatively isolated container for generating a magnetic field between the front surface of the fixed electrode and its obverse surface; provides a drawing element located adjacent to the obverse surfaces stationary electrode and mobile electrode, for the Hamshacha of the radial magnetic field generated by between stationary electrode and movable electrode in the radial direction.
The volume of applicability of this application will be more apparent from further detailed description. However, it should be clear that a detailed description and specific examples when specifying the preferred embodiments of the invention are given for illustrative purposes only, as the specialists in this field of technology from a detailed description will become apparent various changes and modifications that are within the entity and the amount of the invention.
Brief description of drawings
The invention is further explained in the description of the preferred options for carrying out the invention with reference to the accompanying drawings, in which:
Fig. 1 represents the view of the longitudinal section of a typical, famous vacuum breaker;
Fig. 2 depicts a schematic view of the radial magnetic field generated by the current between two electrodes in the vacuum interrupter is activated, according to the prior art;
Fig. 3 represents the view of the longitudinal section of vacuum breaker, according to the present invention;
Fig. 4-8 placed common species and longitudinal sections of options for the implementation, in which attracts member is attached to the vacuum breaker according to the present invention;
Fig. 9 depicts the schematic view of the radial magnetic field generated by the current between two electrodes the vacuum interrupter is activated, according to the present invention;
Fig. 10 and 11 depict types of longitudinal sections other implementation options, which attracts member is attached to the vacuum breaker, according to the present invention.
Description of the preferred embodiments of the invention
Further, with reference to the accompanying drawings will be detailed in a vacuum breaker vacuum breaker in accordance with the method of implementation of the present invention.
In Fig. 3 shows a longitudinal section, illustrating a vacuum breaker according to the present invention, and Fig. 4-8 placed common species and longitudinal section, illustrating the options of where to vacuum breaker is attached drawing element according to the present invention.
At least one pair of metallic interior 170 screens can be made in the form of a cylinder inside isolated container 110 to accommodate the stationary electrode 130 and mobile electrode 140, and it can be attached to and merged with the internal peripheral surface stand-alone container 110.
Attractive element 180 can be attached and merged with the district external surface of the stand-alone container 110 for the Hamshacha of the radial magnetic field, generated between stationary electrode 130 and movable electrode 140 in the horizontal direction.
Attractive element 180 can be made of ferromagnetic material made of ferrite, cobalt, Nickel, and their alloy, etc. and must be attached and secured on the outside of the district isolated surface of the container 110.
Moreover, attracting element 180 may preferably be formed to have a height in the width direction (in direction to move the mobile electrode, which may be cited as the axial direction), that formed height was not less than the maximum distance between the stationary electrode 130 and movable electrode 140, through the force of gravity increases.
Moreover, attracting element 180 may be formed in the form of a cylinder and is attached to a stand-alone container 110, or a variety of attractive elements 180 may be formed in the shape of an arc and is fixed on an insulated container 110.
For example, in the case when the attractive element 180 has a cylindrical shape, insulated container 110 can be divided into the first insulated container 111 and the second insulated container 112, as shown in Fig. 4-6, the outer district lateral edge (Fig. 4 and 5), or in district internal surface (Fig. 6) the first stand-alone container 111 and the second stand-alone container 112 can be formed in a stepwise manner supporting grooves 111a, 112a, 111b, 112b to insert the attractive element 180, attracting element 180 can be inserted into support grooves 111a, 112a, 111b, 112b first isolated container 111 and the second stand-alone container 112, that you can weld and combine the first insulated container 111 with a second insulated container 112, thereby providing the opportunity to maintain the attractive element 180 insulated container 110 in the horizontal direction. Of course, instead of basic grooves 111a, 112a on the outer surface of the first district of insulated container 111 and the second stand-alone container 112 can be formed anchor tabs (not shown) to maintain the attractive element 180 in the axial direction.
And Vice versa, in the case when the attractive element 180 has the shape of an arc can be formed by reference groove 110A predefined depth, or may be formed by a set of reference projections (not shown), with a predefined height on the outside of the district the surface of the stand-alone container 110, as illustrated in Fig. 7 many of the attractive elements 181, 182 can be welded in, or combined with each other using a different way, in a state where many of the attractive elements 181, 182 inserted in support of the grooves, or inserted between the support ledges for fixation of the attractive elements 181, 182 on an insulated container 110.
On the other hand, in the case when the external surface district isolated container, provided the attractive elements, as shown in Fig. 8, they can be connected together using a separate element, for example, fixing ring 190, regardless of whether the attractive element of the form of a ring or arc.
The above vacuum breaker in the vacuum switch according to the present invention can have the following peculiarities of functioning.
In other words, in case when the attractive element of 180, made of ferromagnetic material is provided on the external surface district isolated container 110, if attracting element 180 surrounds the outer circumferential surface stand-alone container 110, more accurately, is located between the stationary electrode 130 and movable electrode 140, then radial magnetic field generated between stationary electrode 130 and movable electrode 140 in the radial direction, can be attracted to element 180.
Then radial magnetic field is strictly horizontal direction, as well as part of a radial magnetic field is not strictly horizontal direction from the number of radial magnetic fields generated between stationary electrode 130 and movable electrode 140, can attract a magnetic element of 180 to strengthen the radial component of the magnetic field in General horizontal direction, and, through that, the radial magnetic field between the two electrodes 130, 140 may ultimately be additionally increased, thus increasing the driving force of the arc.
The following paragraphs will describe a vacuum breaker in the vacuum switch according to other variant of the implementation of the present invention.
In other words, attracting element 180 can be attached to the external surface district isolated container 110, but, in some cases, attracting element 180 may be provided on the outer surface district isolated container 110 at uniform intervals, or attracting element 180 may be provided in the inner part of the isolated container 110.
In case, when the attractive element 180 provided in the inner part of the isolated container, attracting element 180 can be attached and merged with district internal surface of the inner screen 170, as illustrated in Fig. 10, or may be provided between the outer surface of the inner district screen 170 and district internal surface of the stand-alone container 110, as shown in Fig. 11. Moreover, the internal screen 170 can be made of ferromagnetic material, providing for the possibility, therefore, the internal display 170 perform the role of attracting element.
The basic configuration and the results of operation of the vacuum in a vacuum breaker switch according to this option, the implementation can be essentially the same as in the above embodiment. However, when drawing element in the inner part of the isolated container, as illustrated in this embodiment, insulated container should be increased in the amount necessary for the intended attracting element, thus, it can be relatively increased in comparison with the above-mentioned way of the implementation in terms of size. However, because the attractive element provided in the inner part of the isolated container, General appearance of the vacuum breaker may have smoothed design, and mutual influence between vacuum circuit breaker and other components that arises because of the attractive elements, can be prevented in advance. In particular, in the case when the internal display is used as the attractive elements, the number of Assembly parts can be reduced without increasing the size of vacuum breaker, thus reducing the cost of production.
As described above, the vacuum interrupter is activated in a vacuum breaker in accordance with this option implementation provides attractive element made of ferromagnetic material for the formation of a space that is between stationary electrode and movable electrode for the Hamshacha of the radial magnetic field generated in the radial direction between stationary electrode and movable electrode through attracting element. Due to this, the radial component of the magnetic field can be increased in General horizontal direction between stationary electrode and movable electrode, and as a result of radial magnetic field between the two electrodes may be further increased at the expense of what the driving force of the arc increases.
1. Vacuum breaker in the vacuum switch, and a vacuum breaker contains: sealed insulated container; stationary electrode is mounted in the inner part of the isolated container; and movable electrode is located so that it is addressed to a stationary electrode and a slidable relatively isolated container for generating a magnetic field between the front surface of the fixed electrode and its obverse surface, and provides for appeals to the element located adjacent to the obverse surfaces stationary electrode and mobile electrode and intended for the Hamshacha of the radial magnetic field, generated between stationary electrode and movable electrode in the radial direction, and on the outer surface district isolated container stepped follows formed reference groove to maintain inserted into her attractive element in the axial direction, which is the direction of movement of mobile electrode, and the height of the attractive element in the axial direction is not less than the maximum distance between the stationary electrode and movable electrode.
2. Vacuum breaker of claim 1, wherein the attractive element formed of a number of elements in the form of an arc, and many of the attractive elements in the form of an arc combined together to form a ring.
3. Vacuum breaker of claim 1, wherein insulated container formed the first container and a second container, and at the respective ends of the first container and the second container formed first basic groove and second support groove to maintain the attractive element in the axial direction.
4. Vacuum breaker on item 3, in which attracts the element is inserted between the first anchor groove and the second anchor groove, and the first container and a second container combined to commit to the attractive item on the step surface of the first anchor grooves and the second anchor grooves.
5. Vacuum breaker of claim 1, wherein the attractive element is made of ferromagnetic material.