CH338889A - Differential magnetic flux device - Google Patents
Differential magnetic flux deviceInfo
- Publication number
- CH338889A CH338889A CH338889DA CH338889A CH 338889 A CH338889 A CH 338889A CH 338889D A CH338889D A CH 338889DA CH 338889 A CH338889 A CH 338889A
- Authority
- CH
- Switzerland
- Prior art keywords
- windings
- magnetic flux
- series
- differential
- turns
- Prior art date
Links
- 230000004907 flux Effects 0.000 title claims description 14
- 238000004804 winding Methods 0.000 claims description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/14—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for differential operation of the relay
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
- H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Machine Translation (AREA)
Description
Dispositif ä flux magnetique differentiel Les dispositifs ä flux magnetique differentiel de type connu, tels que ceux utilises Jans les disjonc- teurs differentiels, comprennent generalement deux enroulements en opposition et ä nombre egal de spires montes sur un circuit magnetique commun. Ce nombre de spires doit etre suffisamment grand, de fagon ä creer un flux suffisant pour faire d6clen- cher 1e disjoncteur. Differential magnetic flux device Differential magnetic flux devices of known type, such as those used in differential circuit breakers, generally comprise two windings in opposition and with an equal number of turns mounted on a common magnetic circuit. This number of turns must be large enough to create sufficient flux to trip the circuit breaker.
De plus, etant donne que 1'intensite nominale passe par ces enroulements en opposition, les fils qui les constituent doivent avoir une section suffi- sante en vue d'eviter un trop grand echauffement dü ä la resistance des bobinages et ä la faible surface de rayonnement. Ceci conduit ä un encombrement assez considerable des enroulements et ä un coüt eleve de 1'appareil ainsi realise. In addition, given that the nominal current passes through these windings in opposition, the wires which constitute them must have a sufficient section to avoid excessive heating due to the resistance of the windings and the small surface of the windings. radiation. This leads to a rather considerable bulk of the windings and to a high cost of the apparatus thus produced.
Pour remedier ä ces inconvenients, la presente invention a pour objet un dispositif ä flux magnz- tique differentiel comportant un premier groupe de n enroulements relies en serie sur une meine phase, chacun d'eux etant monte en opposition sur un noyau magnetique commun avec un enroulement presentant 1e meine nombre de spires et appartenant ä un second groupe de n enroulements relies en serie sur une autre phase, n etant au moins egal ä 2. Ce dispositif a pour avantage d'utiliser un meine nombre de spires d'un diamätre plus reduit, ce qui diminue la longueur totale du fil et, par suite, la quantite de cuivre utilisee. To remedy these drawbacks, the subject of the present invention is a differential magnetic flux device comprising a first group of n windings connected in series on the same phase, each of them being mounted in opposition on a common magnetic core with a winding having the same number of turns and belonging to a second group of n windings connected in series on another phase, n being at least equal to 2. reduced, which reduces the total length of the wire and, consequently, the amount of copper used.
Par ailleurs, etant donne que la longueur du fil des enroulements est reduite par rapport ä celle des enroulements des dispositifs classiques, la r6sis- tance de ces enroulements diminue sensiblement, ce qui a pour consequence de permettre une r6duc- tion du diametre du fil utilise, tout en gardant les meines echauffements. - Enfin, etant donne que les couches de spires ont une epaisseur plus faible, 1e rayonnement de la chaleur degagee par les enroulements s'effectue plus facilement, ce qui permet de reduire encore 1e diametre du fil. Moreover, given that the length of the wire of the windings is reduced compared to that of the windings of conventional devices, the resistance of these windings decreases appreciably, which has the consequence of allowing a reduction in the diameter of the wire used. , while keeping the same warm-ups. - Finally, since the layers of turns have a lower thickness, the radiation of the heat given off by the windings takes place more easily, which makes it possible to further reduce the diameter of the wire.
Par suite, 1'encombrement total des enroulements est nettement infdrieur par rapport ä celui des en- roulements des dispositifs classiques, lesdites bobines etant en meine temps beaucoup moins onereuses. As a result, the total size of the windings is clearly less than that of the windings of conventional devices, said coils being at the same time much less expensive.
Le dispositif suivant 1'invention presente 6gale- ment une plus grande sensibilite de fonctionnement. Les dessins annexes representent, ä titre d'exem- ple, deux formes d'execution du dispositif objet de 1'invention. The device according to the invention also has a greater operating sensitivity. The appended drawings represent, by way of example, two embodiments of the device which is the subject of the invention.
LaRTI ID="0001.0271" WI="5" HE="4" LX="1224" LY="1946"> fig. 1 represente 1e schema dun disjoncteur comprenant un dispositif ä flux magnetique diffe- rentiel classique. LaRTI ID="0001.0271" WI="5" HE="4" LX="1224" LY="1946"> fig. 1 is a diagram of a circuit breaker incorporating a conventional differential magnetic flux device.
Les fig. 2 et 3 representent les schemas de deux disjoncteurs comprenant chacun un dispositif ä flux magnetique differentiel, ces deux dispositifs consti- tuant des formes d'execution de 1'invention. Figs. 2 and 3 show diagrams of two circuit breakers each comprising a differential magnetic flux device, these two devices constituting embodiments of the invention.
La fig. 4 est une vue en perspective (Tun dis- joneteur comprenant un dispositif ä flux differentiel. Dans les disjoncteurs classiques tels que celui represente ä la fig. 1, en plus du declencheur magne- tique 1 et du declencheur thermique 2 habituels, est prevu un decleneheur differentiel constitue par deux enroulements 3 et 4 montes en opposition ä nombre egal de spires sur un circuit magnetique commun 5. En fonctionnement normal, la somme des courants parcourant les enroulements est nulle et 1e flux resultant dans 1e circuit magn6tique 5 est nul. En cas de dUaut r6sistant ä la terre, les phases ne sont plus en 6quilibre et la somme des courants traversant les enroulements en opposition 3 et 4 West plus nulle. fig. 4 is a perspective view of a circuit breaker comprising a differential flux device. In conventional circuit breakers such as that shown in FIG. differential trigger consists of two windings 3 and 4 mounted in opposition with an equal number of turns on a common magnetic circuit 5. In normal operation, the sum of the currents flowing through the windings is zero and the flux resulting in the magnetic circuit 5 is zero. In the event of a resistive earth fault, the phases are no longer in balance and the sum of the currents passing through the windings in opposition 3 and 4 is no longer zero.
Un flux est alors cr6e dans 1e circuit magn6tique 5 et la force magn6tomotrice r6sultante provoque par attraction dune armature mobile 1e declenchement du disjoncteur pour des courants tres faibles. A flux is then created in the magnetic circuit 5 and the resulting magnetomotive force causes, by attraction of a mobile armature, the tripping of the circuit breaker for very low currents.
Le disjoncteur repr6sent6 ä la fig. 2 comprend ä la maniere habituelle un d6clencheur magn6tique la, un d6clencheur thermique 2a et un shunt 7. Ce disjoncteur comporte, en outre, un dispositif ä flux magn6tique diNrentiel constitue par une paire d'en- roulements 3a, 3b mont6s en s6rie Jans la meine Phase et respectivement en opposition avec les en- roulements dune paire d'enroulements <I>4a, 4b</I> mont6s en Serie dans 1'autre Phase. Les enroulements 3a et 4a sont port6s par un noyau magn6tique commun 5a, alors que les enroulements 3b et 4b sont port6s par un noyau magn6tique commun 5b. Ce dispositif fonctionne comme 1e dispositif represente ä la fig. 1. The circuit breaker represented in FIG. 2 comprises in the usual manner a magnetic trip device 1a, a thermal trip device 2a and a shunt 7. This circuit breaker further comprises a diNential magnetic flux device constituted by a pair of windings 3a, 3b mounted in series Jans the same Phase and respectively in opposition with the windings of a pair of windings <I>4a, 4b</I> connected in series in the other Phase. Windings 3a and 4a are carried by a common magnetic core 5a, while windings 3b and 4b are carried by a common magnetic core 5b. This device operates like the device shown in FIG. 1.
Dans le disjoncteur repr6sente ä la fig. 3, 1e dispositif ä flux diff6rentiel comporte deux groupes de trois enroulements en s6rie dans chaque Phase, <B>3e,</B><I>3d,</I> 3e et 4c,<I>4d,</I> 4e. Les enroulements 3c et 4c montes sur un noyau magn6tique commun Sc sont en opposition ainsi que, dune Part, les enroulements 3d et 4d montes Sur un noyau magn6tique commun 5d et, d'autre Part, les enroulements 3e et 4e mont6s sur un noyau magn6tique commun 5e. In the circuit breaker represented in FIG. 3, the differential flux device has two groups of three windings in series in each Phase, <B>3e,</B><I>3d,</I> 3e and 4c,<I>4d,</I> 4th. The windings 3c and 4c mounted on a common magnetic core Sc are in opposition as well as, on the one hand, the windings 3d and 4d mounted on a common magnetic core 5d and, on the other hand, the windings 3rd and 4th mounted on a magnetic core common 5th.
La force magn6tomotrice engendrde par 1e dispo- sitif ä flux d'ifferentiel etant fonction du nombre d'amperes-tours, les enroulements tels que 3a, 3b dans 1e cas de la fig. <I>2, 3c, 3d</I> et 3e dans 1e cas de la fig. 3, ont un nombre total de spires Egal ä celui de 1'enroulement 3 de la fig. 1. Du fait de la division de chaque enroulement de la fig. 1, en plusieurs enroulements en s6rie, chaque bobine constitu6e par ces enroulements en serie possede des spires d'un diametre plus reduit, d'oü diminution de la longueur totale du fil et, par Suite, utilisation dune quantite moindre de cuivre. Du fait que les bobines en s6rie ont des dimensions d'enroulement plus faibles, la rdsistance du fil diminue sensiblement, ce qui permet d'en r6duire 1e diametre. De plus, une nouvelle diminution de diamUre peut etre obtenue en remarquant que les couches de spires etant de moindre 6paisseur, 1e rayonnement de la chaleur degagee par les enroulements s'effectue plus facile- ment. The magnetomotive force generated by the differential flux device being a function of the number of ampere-turns, the windings such as 3a, 3b in the case of FIG. <I>2, 3c, 3d</I> and 3e in the 1st case of fig. 3, have a total number of turns equal to that of winding 3 of FIG. 1. Due to the division of each winding of FIG. 1, in several windings in series, each coil constituted by these windings in series has turns of a smaller diameter, hence reduction in the total length of the wire and, consequently, use of a lesser quantity of copper. Because the coils in series have smaller winding dimensions, the resistance of the wire decreases significantly, which makes it possible to reduce the diameter of the wire. In addition, a new reduction in diameter can be obtained by noting that the layers of turns being of less thickness, the radiation of the heat given off by the windings takes place more easily.
La fig. 4 montre en perspective un disjoncteur equip6 du dispositif decrit ci-dessus, en Position enclench6e. Ce disjoncteur comprend, ä la maniere classique, un dispositif de verrouillage ou serrure 8 muni d'un bouton-poussoir de commande 9 et main- tenu enclenche tant que 1e declencheur magn6tique constitu6 par une bobine 10 et une Palette 11 montde dans cette bobine Wattire pas un volet 12 associe ä cette Palette. Le disjoncteur reste aussi dans la Position enclench6e illustr6e ä la fig. 4 taut que le declencheur thermique constitue par un bilame 13 et un volet 14 n'a pas subi une fflormation suffi- sante sous 1'action de 1'effet Joule. Enfin, ce disjonc- teur reste enclench6 tant que deux bobines 15 et 16 comportant chacune deux enroulements en opposi- tion appartenant ä chacune des phases, les enroule- ments de la meine Phase etant montes en s6rie dune bobine ä 1'autre, ne sont pas 1e siege dune force magn6tomotrice attirant une Palette 17 qui libere un levier 18 venant agir sur une patte port6e par 1e volet 12. fig. 4 shows in perspective a circuit breaker equipped with the device described above, in the engaged position. This circuit breaker comprises, in the conventional manner, a locking device or lock 8 provided with a control push-button 9 and kept engaged as long as the magnetic trip unit consisting of a coil 10 and a pallet 11 is mounted in this Wattire coil. not a flap 12 associated with this Palette. The circuit breaker also remains in the On Position shown in fig. 4 provided that the thermal trip device constituted by a bimetallic strip 13 and a flap 14 has not undergone sufficient fflormation under the action of the Joule effect. Finally, this circuit breaker remains energized as long as two coils 15 and 16 each comprising two opposing windings belonging to each of the phases, the windings of the same phase being connected in series from one coil to the other, are not not the seat of a magnetomotive force attracting a Pallet 17 which releases a lever 18 which acts on a tab carried by the flap 12.
En variante, 1e nombre d'enroulements par Phase pourrait etre sup6rieur ä 3, ce qui entrainerait une diminution du nombre de spires par enroulement et une diminution de la quantit6 totale de cuivre. Dans 1e cas de la forme d'ex6cution reprdsentee ä la fig. 2, 1'enroulement 3a peut former 1'enroulement exterieur dune bobine double 3a-4a mont6e Sur 1e noyau magn6tique commun 5a, tandis que 1'enroulement 3b peut constituer 1'enroulement interieur dune bobine double 3b-4b montee sur le noyau magn6tique com- mun <I>5b</I> ou rdciproquement. Alternatively, the number of windings per phase could be greater than 3, which would lead to a reduction in the number of turns per winding and a reduction in the total quantity of copper. In the first case of the embodiment represented in FIG. 2, the winding 3a can form the outer winding of a double coil 3a-4a mounted on the common magnetic core 5a, while the winding 3b can constitute the inner winding of a double coil 3b-4b mounted on the common magnetic core. - mun <I>5b</I> or vice versa.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH338889T | 1957-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH338889A true CH338889A (en) | 1959-06-15 |
Family
ID=4504805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH338889D CH338889A (en) | 1957-07-09 | 1957-07-09 | Differential magnetic flux device |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH338889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2790139A1 (en) * | 1998-12-30 | 2000-08-25 | Power Controls Iberica Sl | Automatic circuit breaker for electricity supply has bimetal inducing thermal trigger when supercharges reach certain level, and magnetic section inducing magnetic trigger when supercharges are higher |
-
1957
- 1957-07-09 CH CH338889D patent/CH338889A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2790139A1 (en) * | 1998-12-30 | 2000-08-25 | Power Controls Iberica Sl | Automatic circuit breaker for electricity supply has bimetal inducing thermal trigger when supercharges reach certain level, and magnetic section inducing magnetic trigger when supercharges are higher |
| BE1013198A5 (en) * | 1998-12-30 | 2001-10-02 | Power Controls Iberica Sl | Automatic switch ground. |
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