Arc blow-out circuit breaker

FIELD: electricity.

SUBSTANCE: circuit breaker (1) comprises two switching chutes (11a, 11b), each of them containing a single contact breaker of fixed contact (2) with the first contact area (21) and movable conductive contact element (30) with the second contact area (31) in order to set the respective conductive connection between the first and second contact area in on state of the circuit breaker and to separate the first (21) and second contact areas (31) in off state of the circuit breaker (1) and two arc blow-out chambers (4) to blow out electric arc (5). Each electric arc (5) is propagated in direction of one of arc blow-out chambers (4) notwithstanding direction of current in electric arc (5), movable contact elements of switching chutes are set in parallel to direction of magnetic field (M) in switching chutes thus providing progressive motion.

EFFECT: invention relates to circuit breaker ensuring fast, reliable blowing out of arcs notwithstanding direction of current, this circuit breaker is fit for multipole mode of operation.

15 cl, 3 dwg

 



 

Same patents:

FIELD: electrical engineering.

SUBSTANCE: arc suppressor contains an arc suppression chamber (21) formed by a package of de-ionising plates (22), an arc generation chamber (11) delimited by the first side wall (12) and the second side wall (13) and a means for removal of gases generated during electric arc occurrence, the means containing a removal channel (31) positioned behind the second side wall and connected with at least one exchange space (24). The arc suppression chamber contains permanent magnets, at least part of them placed behind the first side wall (12). The removal means has a hole formed partially in the second side wall (13) and opening to the arc suppressor outside.

EFFECT: enhanced effectiveness of arc suppression without increase of the commutation device volume.

10 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: arc chute (4) comprises an arc-quenching chamber (21) formed by a package of deionising plates (22), and an arc-generating chamber (11) restricted with the first and the second flanges (12, 13), besides, the arc-quenching chamber comprises permanent magnets, at least partially arranged behind the first flange (12). The arc-generation chamber (11) comprises a higher induction section (31), in which the arc moves towards the arc-quenching chamber by the first part (32, 33) of permanent magnets, and a diverging section (51), in which the arc diverges to the first flange by the second part (52) of the permanent magnets, besides, the magnetic field in the longitudinal average plane developed by the second part, is substantially weaker than the field developed by the first part. An automatic circuit breaker is also disclosed, comprising opened contacts (1, 2) and the arc-quenching chamber described above.

EFFECT: improved reliability of arc quenching and current interruption.

11 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: contactor for operation on DC and AC currents is equipped with at least one contact part made of a fixed contact and a movable contact; at least one permanent magnet placed near the contact part and intended to develop a permanent magnetic arc-quenching field and at least one coil placed near the contact part and intended to develop an electromagnet arc-quenching field to suck-in the arc that originates when the contact part opens at least into one arc-quenching chamber. The contactor is also equipped with at least two contact parts, movable contacts of which are placed on the contact bridge; at least one permanent magnet placed near each contact part, besides, permanent magnets related to two contact parts are polarised in opposite directions.

EFFECT: provision of fast and reliable opening of contacts and arc-quenching, simplified design and manufacturing.

5 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention refers to devices for electric arc extinguishing at interruption both of short-circuit currents, and low currents with commutation device, and is intended for being used in arc extinguishing devices of current-restricting and quick-operating switches. Magnetic blow device includes a set of magnetic conductors with coils, movable and fixed contacts. Each next magnetic conductor of the set is located above the previous one; at that, each next magnetic conductor of the set is offset relative to movable contact in horizontal plane by shorter distance to this contact in comparison to previous magnetic conductor of the set. Coils of magnetic conductors are in-series connected to contacts.

EFFECT: eliminating deceleration of travelling speed of electric arc in arc extinguishing device, and its extinguishing efficiency.

3 dwg

FIELD: electricity.

SUBSTANCE: electromechanical circuit breaker is intended for opening and closing the current in power circuit (3, 4). It includes fixed (5) and movable (6) contact elements which, when in position of contacting each other, provide current drainage from power circuit (3, 4), and arc extinguisher (2) with magnetisation coil (8). Arc extinguisher (2) includes electrode assembly (12) connected to magnetisation coil (8). Magnetic field used for the arc discharge is created with the arc itself. Electrodes (12) are connected to contact elements (5, 6) so that electric arc obtained during opening of contact elements is divided at least into the first arc (13a) located between one contact element (5) and electrodes (12) and the second arc (13b) located between electrodes (12) and other contact element (6). The first or the second arc (13a, 13b) are installed parallel to magnetisation coil (8) connected on one side to electrodes (12), and on the other side - to one of contact elements (5, 6).

EFFECT: increasing the breaking efficiency and possibility of breaking at smaller current values.

18 cl, 12 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to components of switching hardware, particularly DC switch. DC switch independent magnetic blow-out device on permanent magnets consists of permanent magnets and magnetic core. Every magnetic pole incorporates U-like horns. One pole of magnetic core is fitted between bifurcated horn parts of every electric pole, while another one is located at the bottom and aside of aforesaid U-like horns.

EFFECT: higher reliability of arc control due to DC arc blow-out in preset direction at whatever arc current direction.

3 dwg

The invention relates to a device switching electrical circuits, DC and can be used in the construction of relays, contactors and other switching devices of automation, control and protection

Contact system // 2045791
The invention relates to a contact system of protection devices and control

FIELD: electrical engineering.

SUBSTANCE: invention relates to components of switching hardware, particularly DC switch. DC switch independent magnetic blow-out device on permanent magnets consists of permanent magnets and magnetic core. Every magnetic pole incorporates U-like horns. One pole of magnetic core is fitted between bifurcated horn parts of every electric pole, while another one is located at the bottom and aside of aforesaid U-like horns.

EFFECT: higher reliability of arc control due to DC arc blow-out in preset direction at whatever arc current direction.

3 dwg

FIELD: electricity.

SUBSTANCE: electromechanical circuit breaker is intended for opening and closing the current in power circuit (3, 4). It includes fixed (5) and movable (6) contact elements which, when in position of contacting each other, provide current drainage from power circuit (3, 4), and arc extinguisher (2) with magnetisation coil (8). Arc extinguisher (2) includes electrode assembly (12) connected to magnetisation coil (8). Magnetic field used for the arc discharge is created with the arc itself. Electrodes (12) are connected to contact elements (5, 6) so that electric arc obtained during opening of contact elements is divided at least into the first arc (13a) located between one contact element (5) and electrodes (12) and the second arc (13b) located between electrodes (12) and other contact element (6). The first or the second arc (13a, 13b) are installed parallel to magnetisation coil (8) connected on one side to electrodes (12), and on the other side - to one of contact elements (5, 6).

EFFECT: increasing the breaking efficiency and possibility of breaking at smaller current values.

18 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: invention refers to devices for electric arc extinguishing at interruption both of short-circuit currents, and low currents with commutation device, and is intended for being used in arc extinguishing devices of current-restricting and quick-operating switches. Magnetic blow device includes a set of magnetic conductors with coils, movable and fixed contacts. Each next magnetic conductor of the set is located above the previous one; at that, each next magnetic conductor of the set is offset relative to movable contact in horizontal plane by shorter distance to this contact in comparison to previous magnetic conductor of the set. Coils of magnetic conductors are in-series connected to contacts.

EFFECT: eliminating deceleration of travelling speed of electric arc in arc extinguishing device, and its extinguishing efficiency.

3 dwg

FIELD: electricity.

SUBSTANCE: contactor for operation on DC and AC currents is equipped with at least one contact part made of a fixed contact and a movable contact; at least one permanent magnet placed near the contact part and intended to develop a permanent magnetic arc-quenching field and at least one coil placed near the contact part and intended to develop an electromagnet arc-quenching field to suck-in the arc that originates when the contact part opens at least into one arc-quenching chamber. The contactor is also equipped with at least two contact parts, movable contacts of which are placed on the contact bridge; at least one permanent magnet placed near each contact part, besides, permanent magnets related to two contact parts are polarised in opposite directions.

EFFECT: provision of fast and reliable opening of contacts and arc-quenching, simplified design and manufacturing.

5 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: arc chute (4) comprises an arc-quenching chamber (21) formed by a package of deionising plates (22), and an arc-generating chamber (11) restricted with the first and the second flanges (12, 13), besides, the arc-quenching chamber comprises permanent magnets, at least partially arranged behind the first flange (12). The arc-generation chamber (11) comprises a higher induction section (31), in which the arc moves towards the arc-quenching chamber by the first part (32, 33) of permanent magnets, and a diverging section (51), in which the arc diverges to the first flange by the second part (52) of the permanent magnets, besides, the magnetic field in the longitudinal average plane developed by the second part, is substantially weaker than the field developed by the first part. An automatic circuit breaker is also disclosed, comprising opened contacts (1, 2) and the arc-quenching chamber described above.

EFFECT: improved reliability of arc quenching and current interruption.

11 cl, 2 dwg

FIELD: electrical engineering.

SUBSTANCE: arc suppressor contains an arc suppression chamber (21) formed by a package of de-ionising plates (22), an arc generation chamber (11) delimited by the first side wall (12) and the second side wall (13) and a means for removal of gases generated during electric arc occurrence, the means containing a removal channel (31) positioned behind the second side wall and connected with at least one exchange space (24). The arc suppression chamber contains permanent magnets, at least part of them placed behind the first side wall (12). The removal means has a hole formed partially in the second side wall (13) and opening to the arc suppressor outside.

EFFECT: enhanced effectiveness of arc suppression without increase of the commutation device volume.

10 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: circuit breaker is designed to pass and interrupt current in the main circuit. The circuit breaker includes an arc-suppression device with an arc-suppression facility, a magnetising coil (11) and a group of electrode facilities (9, 10) coupled electrically to the magnetisng coil (11). Fixed (5) and movable (6) contact elements in the first position are interconnected so that they can pass current in the main circuit. The contact element (6) is transferred into the second position remote from the contact element (5) with current interruption in the main circuit and shift of an occurring arc (17) to the arc-suppression facility. The group of electrode facilities (9, 10) is designed to interact with the arc (17) with the creation of excitation current by arcing in the coil (11). The arc-suppression facility includes a group of magnets (15, 16) creating a magnetic field (B15, B16) oriented radially to the arc and a force (F15, F16,) that shifts the arc (17) for the purpose of the arc (17) interaction with the group of electrode facilities (9, 10).

EFFECT: developing the circuit breaker capable to interrupt rather low current in any direction.

8 cl, 11 dwg

Switching system // 2570169

FIELD: electricity.

SUBSTANCE: invention is related to switching system (1) for relays or contactor switch, which is comprised of a contact bridge (5) placed between two contacts (4a, 4b) so that it can rotate around the axis (6). Besides, the switching system (1) comprises a magnet element (15) that generates magnetic filed (28) parallel to the rotation axis (6) of the contact bridge (5) in order to force out electric arc occurring at open contacts (4a, 4b) to arc-quenching chamber (16).

EFFECT: improved efficiency of the switching system at voltage of 450 V and at passage and interruption of current of 250 A.

12 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention presents and arc blow-out circuit breaker with fast and polarity-independent arc blow-out and heat protection of the bridge circuit. The circuit breaker comprises at least two fixed contacts (2) with to contact areas and at least one movable electroconductive bridge contact (3) with the other two areas of contact (31, 32), at least one magnet (71, 72) intended for generation of permanent magnetic field (M) in essence at the section of the first and second contact areas for impact with magnetic force (F) on electric arc (51, 52) occurring between the first and second areas of contact when cutoff state is set, two first arc blow-out chambers (41, 42). The movable bridge contact (3) comprises two bridge plates (81, 82), which for the purpose of arcs (51, 52) blowing-out pass with the second direction of current opposite to the first direction of current from the bridge contact (3) along the axis (BA) of bridge contact (3) movement.

EFFECT: improved design.

12 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: circuit breaker (1) comprises two switching chutes (11a, 11b), each of them containing a single contact breaker of fixed contact (2) with the first contact area (21) and movable conductive contact element (30) with the second contact area (31) in order to set the respective conductive connection between the first and second contact area in on state of the circuit breaker and to separate the first (21) and second contact areas (31) in off state of the circuit breaker (1) and two arc blow-out chambers (4) to blow out electric arc (5). Each electric arc (5) is propagated in direction of one of arc blow-out chambers (4) notwithstanding direction of current in electric arc (5), movable contact elements of switching chutes are set in parallel to direction of magnetic field (M) in switching chutes thus providing progressive motion.

EFFECT: invention relates to circuit breaker ensuring fast, reliable blowing out of arcs notwithstanding direction of current, this circuit breaker is fit for multipole mode of operation.

15 cl, 3 dwg

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