SI23649B

SI23649B - Electromagnetic relay, in particular the relay switches for break the electric current at the onset of the electric differential current, and switch comprising such relay

Info

Publication number: SI23649B
Application number: SI201100036A
Authority: SI
Inventors: Anton Hamler; Matija Strehar; Mitja Vozel; Mitja KoprivĹˇek
Original assignee: Eti Elektroelement D.D.
Priority date: 2011-02-04
Filing date: 2011-02-04
Publication date: 2017-05-31
Also published as: SI23649A; EP2671243A1; SI23650A; SI23651B; EP2671243B1; WO2012105913A1; SI23651A

Abstract

Namen izuma je zasnovati elektromagnetni rele, zlasti rele (3) stikala (S) za prekinitev tokokroga ob pojavu diferenčnega toka med faznim vodnikom (P) in nevtralnim vodnikom (N) le-tega, pri katerem naj bi bilo navzlic znatnim tehnološkim poenostavitvam pri sami izdelavi zagotovljeno doseganje za zanesljivo delovanje potrebnih magnetnih lastnosti, pri čemer naj bi bila temu ustrezno izboljšana tudi občutljivost oz odzivnost releja (3) in zanesljivost delovanja celo pri zaznavanju zelo majhnih diferenčnihtokov. Temu ustrezno je naloga izuma izpopolniti tudi s tovrstnim relejem (3) opremljeno stikalo (S) za prekinitev tokokroga ob pojavu diferenčnega toka. Po izumu rele (3) obsega enovito zasnovan, iz pločevine ali traku iz jekla ali druge kovinske legure z vnaprej določenimi magnetnimi lastnostmi izrezan ali izsekan jarem (31), obsegajoč tri v smeri proti kotvi (33) štrleče, med seboj razmaknjene in dolžinsko v smislu možnosti na vseh treh sočasnega naleganja kotve (33) usklajene krake (311, 312, 313),medtem ko enovito zasnovana, iz pločevine ali traku ali žice ali drugega valjanca ali vroče ali hladno preoblikovanega polizdelka iz jekla ali druge kovinske legure z vnaprej določenimi magnetnimi lastnostmi sestoječa kotva (33), ki je v območju omenjenega vrtišča (333) na tretjem kraku (313) jarma (31) zasukljivo povezana z jarmom (31), obsega na eni strani vrtišča (333) razporejeno naležno območje (331), ki je prirejeno za sočasno naleganje na vseh treh krakih (311, 312, 313) jarma (31), kot tudi napreostali strani vrtišča (333) razporejeno in izven območja jarma (31) štrleče previsno območje (332), v katerem je s kotvo (33) mehansko povezana vzmet (34).The purpose of the invention is to design an electromagnetic relay, in particular a relay (3) of the circuit breaker (S) for breaking the circuit at the occurrence of the differential current between the phase conductor (P) and the neutral conductor (N) thereof, in which, despite significant technological simplifications, the achievement is ensured for the reliable performance of the necessary magnetic properties, with the sensitivity and responsiveness of the relay (3) and the reliability of operation even when detecting very small differential shafts. Accordingly, it is also an object of the invention to further refine the relay (S) with this type of relay (3) for breaking the circuit at the occurrence of the differential current. According to the invention of the relay (3), it consists of a uniformly designed, sheet or steel strip or other metal alloy with predetermined magnetic properties cut out or cut out of the yoke (31), comprising three projections to the projection angle (33) spaced apart and in length the sense of the possibility of all three concurrent fittings of the coil (33) of the co-ordinate leg (311, 312, 313) while uniquely designed, from sheet metal or strip or wire or other rolling stock, or hot or coldly shaped semi-finished products made of steel or other metal alloys with predetermined the magnetic properties of the boiler (33) which is pivotally connected to the yoke (31) in the region of said pivot (333) on the third arm (313) of the yoke (31), on which side of the pivot (333) which is adapted to simultaneously lie on the three yoke arms (311, 312, 313), as well as the protrusions of the pivot point (333), and projecting overlapping area (332) outside the yoke region (31) in which j An electrically coupled spring (34) with an angle (33).

Claims

Electromagnetic relay, in particular relay circuit breaker switches at the occurrence of differential current in the electrical circuit, and a switch comprising such a relay MODIFIED PATENT REQUIREMENTS

1. A relay (3), in particular for mounting in a switch (S) for breaking the electric circuit at the occurrence of the differential current in the conductors (P, N) of the circuit, wherein such a relay (3) in the electrical sense represents the resistance (Rr) and the inductance of the coil (Lr) through which the relay (3) is electrically connected to the passive electronic circuitry (2) and indirectly to the differential current transformer (1, 2) in the conductors (P, N) so that when the differential current in the conductors (P, N) a coil (LR) under the influence of the voltage from said passive electronic circuit (2) or indirectly from the differential transformer (1) generates magnetic flux (Φ4), and wherein such a relay (3) consists in a mechanical sense of a yoke (31) with a built-in induction coil (LR) and a permanent magnet (32) for generating a magnetic flux (31) and an anchor (33) which is twisted with the yoke (31) in the region of the pivot (333) and in dependence on the excitation or disengagement of the coil (LR) or by means of a permanent the magnet (32) being held in a position on the yoke (31) or, due to the force of the spring (34), unscrewed from the yoke (31) against the trigger mechanism (5) arranged at a distance from the yoke (31) and provided for activating the switch S) in the sense of interrupting an electrical circuit through a conductor (P, N), characterized in that it comprises a uniformly designed, sheet or steel strip or other metal alloy with predetermined magnetic properties cut out or cut out of the yoke (31) comprising three towards the angle (33) protruding, m (311, 312, 313), wherein - the first leg (311) is provided for receiving a coil (LR) which is fitted to such a coil (311) is a way for the first leg (311) to pass through the lumen of the coil (LR), the wrapping of which extends around the first leg (311) and along it, - the second leg (312) is provided for receiving a permanent magnet (32) permanently generating a magnetic flux (Φ), Φ2, Φ3) and thereby the magnetic force required to attach the boom (33) to the yoke (31) of said yoke (31), against the force of the spring (34); - a third leg provided for supporting the boom (33) and providing a pivot (333) of the anchor (33) around which the latter is rotatable from the position of the yoke (311, 312, 313) of the yoke (31) to the position of engagement on the trigger mechanism 5), which is arranged at a distance from the yoke (31), and, in that it is uniformly formed, from a sheet or strip or from a wire or other roller or a hot or coldly shaped semi-finished product made of steel or other metal alloy with predetermined magnetic properties, 33) which is pivotally connected to the yoke (31) on the third arm (313) of the yoke (313), on the one side of the pivot (333) there is arranged a support region (331) adapted for simultaneous on the other side of the yoke (31), as well as on the rest of the pivot point (333), a protruding overhang zone (332) is projected outside the yoke region (31), in which the boom (33) is mechanically connected spring (34).

2. A relay according to claim 1, characterized in that the permanent magnet (32) is wedge-shaped and insertable in the wedge, in the form of the first leg (311), on the other side of the edges (3) in the region of the second jug (312) (31).

3. A relay according to any one of claims 1 to 2, characterized in that the coil (33) comprises, in its prevailing region (332), a rigidly connected one, in a direction at least approximately perpendicular to said overhang zone (332) and away from the pivot 333), a protruding extension (3221) with which the mechanical spring is connected (34).

4. A relay according to any one of claims 1 to 3, characterized in that due to the insertion of a permanent magnet (32) into the region of the second limb arm (312) in the latter formed magnetic field, which, when unbuttoned on the first leg (311) ) are formed by an inductive coil (LR) in the yarn (31), and on the three yoke (31) of the three yoke (31), which simultaneously enclose the bars (33), the first magnetic flux (Φι) passing through the permanent magnet (32) , second shaft (312), yoke (31), boom (33) and first jaw (311) and back towards permanent magnet (32), - second magnetic flux (Φ2) passing through permanent magnet (32) , a second yoke (312) of the yoke (31), an angle (33) and a third yoke (313) arm (313) and back towards the permanent magnet (32) and - a third magnetic flux (Φ3) passing through the permanent magnet (32) , second shaft (312), yoke (31), boom (33) and third yoke arm (323), and back to permanent magnet (32), in an induced induction coil (LR), and thus in said first arm (311)(30), a magnetic field with a first magnetic flux (Φ |) against the opposite magnetic flux (Φ4) is generated, due to the tension on its connections (30 ', 30 "), whereby, at least in the first arm (311) of the yoke (31) weaken or at least predominantly neutralizes the magnetic flux (Φ,) by a permanent magnet (32).

5. A relay according to any one of claims 1 to 4, characterized in that the permanent magnet (32) is so selected, after inserting it into the region of the second arm (312) of the yoke (31) in the case of an unbutton coil (LR) on one side the torque due to the action of the magnetic force is, at least because of the magnetic flux (Φι) of the region of the first arm (311) of the yoke (31) with respect to the pivot (333), at the same time on all three legs (311, 312, 313) of the moment due to the action of the force of the spring (34) on the angle (33), while, on the other hand, with the help of a voltage from the passive electronic circuit (2), the coil (LR) is excited due to the latter generated magnetic flux (Φ4) in the region of the first leg (311) directed against the magnetic flux (Φ)) due to the permanent magnet (32), the torque due to the action of the magnetic forces decreases below the torque value due to the action of the force of the spring (34) on the angle (33).

A relay according to any one of claims 1 to 5, characterized in that the ratio between the first magnetic flux (Φ)) and the third magnetic flux (Φ3) is predetermined on the basis of an appropriate choice of the shape and size of the gap (3121) and / or v the latter insertable permanent magnet (32).

A switch for breaking the electric circuit at the occurrence of a differential current comprising a relay (3) according to any one of claims 1 to 6 and which is intended to be incorporated into an electrical circuit which, in addition to a suitable alternating (AC) or DC the combination of the AC-DC electrical voltage and at least one load (4) form at least one connected voltage source and via a connected switch (S) with said load (4), a connected phase conductor (P) and a neutral conductor (N) the switch (S) comprises a differential transformer (1) whose primary winding (NI) represents through its core a phase conductor (P) and a neutral conductor (N), and its secondary winding (N2) comprises electrical connections (11, 12) ; - a passive electronic circuitry (2), comprising two pairs of terminals (2G, 22 'and 21 ", 22"), between which the parallel-connected electronic components (Cp, Dj, D2) are sequentially connected a capacitor (Cs) provided for charging based on the electric voltage induced in the secondary winding (N2) of the differential transformer (1), whereby the said circuit (2) is electrically connected to the secondary terminal (11, 12) by means of the first pair of terminals (2G, 22 ') winding (N2) of the differential transformer (1).

8. The switch according to claim 7, characterized in that the permanent magnet (32) is wedge-shaped and insertable in the wedge, in the form of a first leg (311), on the other side of the edges (3) in the region of the second leg (312) yoke (31).

The switch according to claim 7 or 8, characterized in that the boiler (33) comprises, in its prevailing region (332), a rigidly connected one, in a direction at least approximately perpendicular to said overhang zone (332) and away from the pivot (333) a protruding extension (3221) with which the mechanical spring is connected (34).

A switch according to any one of claims 7-9, characterized in that, thanks to the insertion of a permanent magnet (32) into the region of the second leg (312), a (31) is formed in the latter formed magnetic field, which, when unstressed on the first leg 31) of the yoke (31) are mounted on the inductive coil (LR) and form the first magnetic flux (Φι) passing through the three coils (33) of the relay (3) at the three yoke (311, 312, 313) a permanent magnet (32), a second yoke (312) shaft (31), an angle (33) and a first yoke (311) shank (31) and back to the permanent magnet (32), - a second magnetic flux (Φ2) a permanent magnet (32), a second yoke arm (312), an angle (33) and a third yoke (313) arm (31) and back towards the permanent magnet (32), and - a third magnetic flux (Φ3) a permanent magnet (32), a second yoke arm (312), an angle (33), and a third yoke (313) arm (32) and back to the permanent magnet (32) in an induced induction coil (LR) first a magnetic field with the first magnetic flux (Φι) is formed on the opposite magnetic flux (Φ4) due to the tension on its connections (30 ', 30 "), and at least in the first arm (311) yoke (31) weakens or. at least predominantly neutralizes the magnetic flux (Φ,) due to the permanent magnet (32)

A switch according to any one of claims 7-10, characterized in that the permanent magnet (32) is so selected that after inserting it into the region of the second arm (312) of the yoke (31) in the unweighted coil (LR) after one side of the torque due to the action of the magnetic force, at least because of the magnetic flux (Φ |) of the region of the first arm (311) of the yoke (31) with respect to the pivot (333), at the same time on all three legs (311, 312, 313) is greater than the torque due to the action of the spring force (34) on the angle (33), while on the other hand, with the help of the voltage from the passive electronic circuit (2), coils (LR) are excited due to the latter generated magnetic flux (Φ4) which at least in the region of the first leg (311) is directed opposite to the magnetic flux (Φι) by a permanent magnet (32), the torque due to the action of the magnetic forces decreases below the torque value due to the action of the force of the spring (34) on the angle (33).

A switch according to any one of claims 7-11, characterized in that the primary winding (NI) of the differential transformer (1) comprises a single wrapper.

A switch according to any one of claims 1 to 12, characterized in that the relationship between the first magnetic flux (Φ)) and the third magnetic flux (Φ3) in the relay (3) is predetermined predetermined on the basis of an appropriate choice of shape and size of the groove (3121 ) and / or to the last insertion permanent magnet (32).