Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/24—Electromagnetic mechanisms
  • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
  • H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/24—Electromagnetic mechanisms
  • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/24—Electromagnetic mechanisms
  • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
  • H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/24—Electromagnetic mechanisms
  • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism

Definitions

• the invention relates to a trigger for a circuit breaker according to the preamble of claim 1.
• triggers for circuit breakers are known in which an armature is movably guided within a coil. If the current flow within the coil exceeds a given short-circuit current flow, the armature is accelerated out of the trigger due to the prevailing electromagnetic forces. Subsequently, it is provided, for example, that the moving armature unlocks a switch lock.
• Such triggers can, due to the high acceleration of the armature, not only unlatch a switch lock, but also deliberately accelerate parts of the switch lock, whereby a correct opening a quick opening of the switch contacts of the circuit breaker concerned can be achieved.
• a disadvantage of such triggers is that they only work reliably at very high currents, such as short circuits.
• a safe triggering with only small but too high currents, which are also referred to as overload currents, is such
• Triggers not possible, especially when the occurrence of such overload currents is provided that they are allowed to flow unimpeded by relevant guidelines duration time, and only after exceeding this period of time, which in turn is dependent on the size of the overcurrent, the tripping of the circuit breaker.
• Known circuit breaker therefore generally have two different triggers, wherein the trigger for the short circuit case, as described above with conductor loop and movable armature is formed, and wherein the separate trigger for the overload is usually formed by a so-called.
• Bimetallic release In a bimetallic a bimetallic element is heated directly and / or indirectly by the resistance-related waste heat of the electrical line, and also unlatches the switch lock by bending the bimetallic element. It is therefore an electro-thermal release.
• a disadvantage of such known circuit breakers with two different triggers is the fact that two independent modules must be provided, manufactured and installed. In particular, by the use of the bimetallic arise considerable costs, due to the required semi-finished product. By using the bimetallic element such circuit breaker must be calibrated individually. It is necessary the
• circuit breakers have an overcurrent tripping behavior, which is highly dependent on the ambient temperature, which has a direct influence on the bending of the bimetal.
• overcurrent tripping behavior which is highly dependent on the ambient temperature, which has a direct influence on the bending of the bimetal.
• the object of the invention is therefore to provide a trigger of the type mentioned, with which the mentioned disadvantages can be avoided, with which a
• Circuit breaker required. This can lead to the production of new tools, such as Injection molds are dispensed with for the production of the housing of such a circuit breaker.
• new tools such as Injection molds are dispensed with for the production of the housing of such a circuit breaker.
• the power loss of the entire trip device can be significantly reduced.
• the vacated space within an otherwise unchanged circuit breaker housing can be used for other assemblies.
• a contact device with a large contact spacing for increased switching capacity can be installed, and / or a large quenching chamber.
• an inventive trigger on an overcurrent tripping behavior which is independent of the ambient temperature.
• such a trigger is simply automated to produce, and does not require subsequent individual tuning, whereby the manufacturing process can be significantly simplified, and a high accuracy in the release is present.
• both partial anchors are always moved when triggered, which due to the high mass, a high pulse can be achieved, which can act on a switching mechanism. This can be with such a trigger the
• Opening process can be accelerated within a switching device.
• the opening process is therefore not only dependent on the spring forces of the switch lock.
• Such a trigger has a high switching capacity, and can the switching contacts of the relevant
• Figure 1 shows a circuit breaker with a preferred embodiment of a trigger according to the invention with lifted upper housing shell.
• Fig. 2 shows the trigger of Figure 1 in a sectional view in a first operating case.
• FIG. 3 shows the illustration according to FIG. 2 in a reduced view;
• FIG. 1 shows a circuit breaker with a preferred embodiment of a trigger according to the invention with lifted upper housing shell.
• Fig. 2 shows the trigger of Figure 1 in a sectional view in a first operating case.
• FIG. 3 shows the illustration according to FIG. 2 in a reduced view;
• FIG. 4 shows the trigger according to FIG. 2 in a sectional representation in a second operating case
• FIG. 5 shows the trigger according to FIG. 2 in a sectional illustration in a third operating case
• FIG. FIG. 6 shows the trigger according to FIG. 2 in a sectional illustration in a fourth operating case
• Fig. 7 shows the trigger of FIG. 2 in a sectional view in a fifth operating case.
• FIG. 1 to 7 each show a particularly preferred embodiment of a trigger 1 for a circuit breaker 2, wherein the trigger 1 has a coil 3, wherein a trigger tube 4 is at least partially movable within the coil 3 in a triggering direction 5, wherein an outside the coil 3 arranged first partial anchor 6 with the
• Trigger tube 4 is firmly connected, and wherein within the trigger tube 4, a movably mounted second sub-anchor 7 and a liquid are arranged.
• Circuit breaker required. This makes it possible to dispense with the production of new tools, such as injection molds, for the production of the housing of such a circuit breaker 2. By dispensing with a bimetallic release, the power loss of the entire trip device can be significantly reduced. Furthermore, the vacated space within an otherwise unchanged circuit breaker housing can be used for other assemblies. Thus, for example, a contact device with a large contact spacing for increased switching capacity can be installed, and / or a large quenching chamber.
• an inventive trigger on an overcurrent tripping behavior which is independent of the ambient temperature. Furthermore, such a trigger 1 is simply automated to produce, and does not require subsequent individual tuning, whereby the manufacturing process can be significantly simplified, and high accuracy when triggered.
• both partial anchors 6, 7 are always moved when triggered, as a result of which, due to the high mass, a high impulse can be achieved, which can act on a switching mechanism 24.
• a high impulse can be achieved, which can act on a switching mechanism 24.
• the opening process within a switching device 2 can be accelerated with such a trigger 1.
• the opening process is therefore not only dependent on the spring forces of the switching mechanism 24.
• Such a trigger 1 has a high switching capacity, and can open the switch contacts 18, 21 of the relevant circuit breaker not only in a zero crossing of the current.
• the trigger 1 shown in FIGS. 1 to 7 is a particularly preferred embodiment of the subject invention. Subsequently, constructive alternatives to the preferred embodiment according to FIGS. 1 to 7 will be described for individual features. There is one
• a trigger 1 is to be understood as meaning an electromechanical device which, upon the occurrence of certain predetermined electrical conditions, causes a predetermined mechanical action. This mechanical process can cause the mechanical opening of switching contacts 18, 21 of a switching device. In the given electrical conditions in question is in particular the height or strength of a current flow through the trigger 1, and its duration.
• the implementation of the predefinable mechanical process is referred to as triggering the trigger 1 or briefly as triggering.
• Triggers 1 are intended for use in circuit breakers 2.
• a circuit breaker 2 is a switching device with switching contacts 18, 21, which is provided and designed to open at certain predetermined electrical states, the switching contacts 18, 21 and so the current flow through the
• Circuit breaker is provided. However, it can also be used in Residual current circuit breaker and / or circuit breakers may be provided.
• Triggers 1 are usually designed for certain operating conditions for which the relevant circuit breaker 2 is designed and approved. The concerned
• Operating conditions include limits of the currents in the coil 3 as well as the behavior in reaching or exceeding.
• the limit up to which no triggering should take place is referred to in the present case as a non-trip current. This depends on the local regulations, for example, 1.13 times the rated current. Furthermore, an area beyond this limit is defined, wherein in the case of a current within this area no immediate triggering should take place, but the triggering is to take place only after the lapse of a predefinable time duration, which duration depends on the actual magnitude of the occurring current. The higher the current actually occurring, the shorter the time that elapses between its occurrence and the triggering. In this case, the time behavior known from fuses is essentially reproduced. Currents in this area are referred to as overcurrents or overload currents, analogous to the occurrence of such overcurrents as an overload case. The lower limit of the overload currents is defined by the non-tripping current. When very high currents occur, so-called
• Typical short-circuit currents reach values of a few thousand amperes in a conventional domestic installation arrangement.
• the respective current intensities as well as the corresponding time behavior are regulated in relevant national or international regulations, such as in the ⁇ VE or IEC.
• a trigger 1 according to the invention is an integral part of a circuit breaker 2. However, it may also be provided to form the trigger 1 as part of a separate from a circuit breaker 2 module, which is operatively coupled to a switching device to open the switch contacts 18, 21 of the relevant
• Specify switching device specifiable.
• the coil 3 of the trigger 1 is intended to be traversed by an electric current, which is representative of the current which in an electric
• the coil 3 is flowed through by the currents actually occurring in the relevant installation environment.
• trigger 1 in circuit breakers is preferably provided that the coil is at least indirectly connected to an input terminal 22 and an output terminal 23 of the circuit breaker 2 circuit technology, and thus forms part of the current path through the circuit breaker 2.
• Circuit breaker 2 is arranged.
• the coil 3 consists of a conductive wire, in particular a copper wire, predetermined cross-section, and has a predetermined number of turns and one through the
• Windings formed opening The cross-section of the wire is essentially dependent on the rated current.
• the type and number of turns, as well as the dimensions of the coil 3 are dependent on other parameters, which will be discussed further here.
• the coil 3 is formed as a substantially cylindrical coil 3. Therefore, that the individual layers of the coil 3 are wound side by side so that the thus formed opening has substantially the shape of a cylinder. It is preferably provided that the coil 3 has only one layer, as is also apparent from FIGS. 1 to 7. But it can also be differently shaped coils 3 may be provided. As already stated, the coil 3 forms an opening. The area inside the coil 3 is the area between the oppositely disposed coil turns in the region of the opening.
• the coil 3 is preferably arranged or wound on a substantially nonmagnetic or paramagnetic coil carrier 20, preferably made of plastic, or such is arranged inside the coil 3.
• the coil 3 is at least partially surrounded by a yoke 8, whereby the
• the yoke 8 is formed as a U-shaped bent metal part comprising ferromagnetic material surrounding the coil 3 on three sides, it can be provided that the yoke 8 has at least one opening to the passage of other components of the trigger 1 to enable. It should be noted for all embodiments that the yoke 8 is not integral
• Part of the trigger 1 must be, but in the context of the invention, one of the other modules of the trigger 1 physically separate arrangement can be provided. It can be approximately provided to achieve the effect of the yoke 8 by corresponding metal parts, which are arranged in a circuit breaker 2 around the trigger 1 around, but which are not connected as an assembly with the other parts of the trigger 1.
• the trigger has a so-called trigger tube 4.
• the trigger tube 4 is intended to be moved in the case of triggering due to electromagnetic forces, and to cause by means of this movement triggering a circuit breaker 2.
• the trigger tube 4 is preferably non-magnetic or paramagnetic. In particular, that is
• Trigger tube 4 as a non-magnetic metal tube, such as a brass tube formed.
• the trigger tube 4 is preferably closed liquid-tight at both ends. For movement due to electromagnetic forces is - as stated at another point - provided that the trigger tube 4 is connected to other components.
• the trigger tube 4 is arranged in regions within the coil 3.
• the indication areawise refers to a length range of the trigger tube 4.
• Trigger tube 4 is therefore a first part of its length, which also as
• Trigger tube length can be designated, disposed within the coil 3, wherein other parts of the trigger tube 4 are arranged outside of the coil 3. It is particularly preferred that on both sides of the coil 3 areas of the trigger tube 4 extend beyond the coil 3 or survive.
• the trigger tube 4 is movably mounted within the coil 3, wherein a mobility is given at least in a triggering direction 5.
• a triggering direction 5 while the direction is referred to, in which a movement of the trigger tube 4 is provided in the case of triggering.
• the triggering direction 5 extends parallel to a longitudinal extension of, in particular cylindrical, coil 3.
• the movement in the triggering direction is preferably a linear movement.
• the trigger tube 4 is mounted longitudinally displaceable in a slightly larger central opening of the coil carrier 20.
• the trigger tube 4 has a stop 15.
• the trigger 1 with a yoke 8 is provided in a development that the stopper 15 cooperates with the yoke 8, to specify the first rest position 10.
• the entire trigger 1 can be easily manufactured as a completed assembly. If the trigger 1 has no yoke, it may be provided that the stop with the coil carrier 20 or the coil. 3
• a circuit breaker 2 To trigger a circuit breaker 2 can be provided that the trigger tube 4 abuts a part of a switching mechanism 24, and accelerated so, or that the trigger tube 4 pulls on a part of a switching mechanism 24 to unlock it.
• the trigger tube 4 may be provided, for example, that a hook-shaped extension is connected to the triggering tube 4.
• the trigger tube 4 is designed as a trigger plunger 16, which at the end remote from the first part anchor 6 has a release extension 17, which is formed approximately by a cap with an extension.
• a first part anchor 6 is firmly connected to the trigger tube 4.
• the first part anchor 6 is formed comprehensively a ferromagnetic material.
• the first partial anchor 6 is at least partially arranged outside the coil 3, wherein it is provided according to a preferred embodiment that the first partial anchor is disposed substantially outside of the coil 3.
• the term "outside of the coil 3" designates an arrangement and design of the first partial anchor 6, in which it is arranged substantially completely or at least partially outside of the coil 3, in particular in the longitudinal extent of the coil 3.
• an arrangement laterally outside the coil 3 can also be used
• the movable part of the first armature 6 is arranged to a large extent outside the coil, provided that the current flowing in the coil 3, a current of less Non-triggering current has. It is envisaged that an education of the first
• Part anchor 6 in the way that this triggering the trigger 1, or during the
• Period of the tripping operation, in regions within the coil 3 is arranged, but the rest of the time or during the other operating cases outside the coil 3 is arranged to be considered outside the coil 3 arranged first partial armature 6.
• first part armature 6 is acted upon by a first spring 9 in the direction of a first rest position 10 of the coil 3 away.
• the amount of current at the occurrence of a short-circuit release is to be influenced.
• the first spring 9 is designed as a compression spring, torsion spring or as a tension spring. It can be provided as training when training as a tension spring, that this spring connects the first part of anchor 6 with a part of a circuit breaker 2. It is preferably provided that the first spring 9 is formed as a compression spring. This allows a particularly simple and compact design of the entire trigger 1, without sensitive protruding parts, which can be easily manufactured as a whole simply automated. It is preferably provided that the compression spring between an abutment of the bobbin 20 and an extension of the first part armature 6 is arranged. It is preferably provided that the first part anchor 6 has a region 11 extending in a disk-shaped manner normal to the release direction 5. At this disc-shaped portion 11, the first spring 9 can be supported. Such a disk-shaped region 11 of the first partial armature 6 is particularly advantageous with regard to the bundling of the magnetic
• said disk-shaped region 11 is clearly visible. As shown, it is preferably provided that the disk-shaped region 11 is formed integrally with the remaining first part armature 6. The disk-shaped region 11 extends normal to the longitudinal extent of the coil 3 and the trigger tube. 4
• the disk-shaped region 11 can with respect to its geometry or its base be formed differently. It is preferably provided that the first part anchor 6 is formed as a rotationally symmetrical body, and consequently also the disk-shaped region 11 has a circular base surface. This is especially true of the
• disc-shaped portion 11 has a rectangular or square base. This is particularly advantageous in view of the arrangement with respect to a U-shaped yoke 8.
• the disk-shaped region 11 essentially the
• Expansion of the yoke 8 has. Under expansion is provided in forming the disc-shaped portion 11 with a circular base that the
• Diameter of the disk-shaped portion 11 corresponds to a width of the yoke 8.
• the disk-shaped region 11 When forming the disk-shaped region 11 with a rectangular base surface, it is preferably provided that the disk-shaped region essentially has the dimensions of the part of the yoke 8 which is arranged opposite the disk-shaped region 11. By adapting the dimensions of the disk-shaped region 11 to the dimensions of the yoke 8, the magnetic conditions in this region can be made particularly advantageous.
• the second part anchor 7 is movably mounted within the trigger tube 4. It is preferably provided that the trigger tube 4, and also the interior thereof, have substantially circular cross-sections. Preferably, it is further provided that also the second part anchor 7 has a substantially circular cross-section.
• the second partial armature 7 is intended to be moved or moved within the trigger tube 4 under the influence of predeterminable electromagnetic force effects generated by the coil 3. As a result, the second partial armature 7 can enter the region of the coil 3 and locally influence the flow of the magnetic field lines.
• the second partial anchor 7 is therefore preferably formed comprising ferromagnetic material.
• the second part anchor 7 has a substantially opposite and slightly smaller cross section than the cavity 14 of the trigger tube 4.
• the function of the trigger 1 and the movement of the second part anchor 7 will be explained later with reference to FIGS. 2 to 7.
• a liquid is further arranged within the trigger tube 4. It is preferably provided that the entire resulting cavity 14 of the trigger tube 4 is substantially completely filled by the liquid. As the resulting cavity 14 while the entire space is designated within the trigger tube 4, which is not occupied by other representational components, in particular by the second part anchor 7 and a second spring 12 to be described later.
• the liquid is intended to dampen the movements of the second part anchor 7 within the trigger tube 4, but not to prevent.
• the liquid has a predeterminable viscosity. By selecting the liquid with regard to its viscosity, the damping of the movement of the second partial armature 7 within the triggering tube 4 can be defined and influenced in a predeterminable manner. It is preferably provided that the liquid is a hydraulic fluid. On the viscosity of the liquid, therefore, for example, by choosing different liquids, in particular the characteristic, especially the
• Time behavior of the trigger in case of overload can be influenced.
• the damping of the liquid is controlled by the shaping of the second part armature 7.
• the damping of a movement within the liquid can be kept low, and by the angular shape - as shown in the figures - a high attenuation can be achieved with otherwise identical properties of the liquid and the electromagnetic structure.
• the second part anchor 7 has a predeterminable number of channels on a side or lateral surface, whereby the damping by the liquid can be further influenced. Through the channels while the attenuation can be reduced.
• a second spring 12 is arranged, which second spring 12, the second part of anchor 7 in the direction of the second rest position 13 is applied.
• This second spring 12 may be formed as a tension spring or as a compression spring.
• the second spring 12 is designed as a compression spring, and between the second part of anchor 7 and the first part of the anchor 6 associated region of the trigger tube 4 is arranged, whereby a simple structural implementation is supported. As a result, the exact adherence to the second rest position can be better supported than with a tension spring.
• the second partial anchor preferably has a shoulder, as illustrated in FIGS. 2 to 7, on which the
• any other means may be provided to load the first part anchor 6 and the second part anchor 7 in the direction of the respective rest positions, for example
• Part anchor 7 as far as possible outside the coil 3. It is preferably provided that a coil length, a trigger tube length and a length of the second part anchor 7 are formed such that the second part anchor 7 is arranged in arrangement in the second rest position 13 substantially outside of the coil 3. Particularly preferably it is provided that the second part anchor 7 in this position to at least 50%, in particular at least 60%), preferably at least 70%>, especially at least 80%>, the length of the second part anchor 7 outside the coil. 3 is arranged.
• the length specifications always refer to the longitudinal extension of the trigger tube or in the release direction.
• the coil length, the first part anchor 6 and the length of the second part anchor 7 are formed such that when the second part anchor 7 within the coil 3 in the way that through the coil 3 - at a
• FIGS. 2 and 3 show the same view, however, in different image size, while the other FIGS. 4 to 7 each represent different operating states or operating cases.
• FIGS. 2 and 3 show the trigger 1 in a first operating case. In the coil 3, either no current or a predetermined permissible current flows below one
• Non-trip current and below a given overload current flow This is a condition in which no triggering should occur.
• the first part anchor 6 is in the first
• the second part anchor 7 is arranged in the second rest position, in which the second part anchor 7
• Partial anchors 6, 7 which, depending on the prevailing and stated relationships of forces to certain states remain at rest, or be moved. Due to the preferred movement of the first and / or second partial armature 6, 7 in the release direction is preferably provided that the respectively relevant forces acting in the release direction
• Partial anchor 6, the second spring 12, the liquid and the second part of anchor 7 are formed such that - at a current flow in the coil 3 is smaller than a predetermined
• Overload current flow - acting on the second part anchor 7 spring force of the second spring 12 and a flow resistance force within the liquid are greater than the force acting on the second part anchor 7 electromagnetic force, and that acting on the first part anchor 6 electromagnetic force is smaller than a spring force of The first spring 9.
• the further behavior of the individual parts, in particular of the first and second part armatures 6, 7, depends on the size of the current flowing in the coil, therefore whether the now flowing current is an overload current, which definitely flows for a certain period of time allowed, or a short-circuit current.
• Figs. 4 to 6 show the trigger 1 in each case different operating cases, which be taken in succession of an overcurrent through the trigger 1 successively.
• a flow is made in the coil 3
• the spring force of the first spring 9 keeps the first part armature 6 continues in its first rest position. 4 shows a snapshot of this
• the movement of the second part anchor 7 is slowed down in time.
• the coil 3, the yoke 8, the second spring 12, the liquid and the second part of anchor 7 are formed such that - at a current flow in the coil 3 greater a predetermined overload current flow - on the second part anchor 7 acting spring force of the second spring 12 and a
• Fig. 5 shows the trigger 1 in a third case of operation.
• the second part of anchor 7 - starting from Fig. 4 - has moved further in the direction of the first part of anchor 6 and is in the illustration of FIG. 5 within the coil 3. This is one
• Fig. 5 shows a snapshot of the trigger 1 immediately before triggering.
• the arrangement of the second partial armature 7 within the coil 3 leads to a guidance of the magnetic field lines in this area through the first and second partial armatures 6, 7.
• first part anchor 6 rests against the second part anchor 7. It is therefore preferably provided that the first and the second partial anchor 6, 7 are formed such that a gap between them can go to zero in the concrete operating case.
• this type of training relates in particular to the lengths of the two
• the second spring 12 may for example also be received within the second part anchor 7.
• Triggering 5 are accelerated, and transferred to the state shown in FIG. 6.
• the coil 3, the yoke 8, the first part of anchor 6, the second part of anchor 7 and the first spring 9 are formed such that - at a current flow in the coil 3 is greater a predetermined overload current flow, and at next The first partial armature 6 arranged second partial armature 7 - acting on the first part armature 6 electromagnetic force is greater than a spring force of the first spring 9.
• the objective trigger 1 behaves differently when a short-circuit current occurs than when an overload current occurs.
• Short-circuit current is sufficient for the electromagnetic force generated by the coil 3 to overcome the spring force of the first spring 9, and the first part of the anchor 6 with the
• Mass inertia of the second part of the anchor can be achieved that they remain during the abrupt movement of the triggering tube 4 in the position relative to the trigger tube 4.
• the full mass of the trigger tube 4 and the two partial anchors 6, 7 contribute to the generation of a high impact pulse. As a result, a strong effect on the switching mechanism 24 can be exercised.
• the coil 3, the yoke 8, the first part armature 6 and the first spring 9 are formed such that - at a current flow in the coil 3 greater a predetermined short-circuit current flow - acting on the first part armature 6
• the coil 3, the yoke 8, the first spring 9, the first part armature 6, the second spring 12, the liquid and the second part armature 7 are designed in this way that
• the coil 3 and / or the yoke 8 and / or the first spring 9 and / or the first part anchor 6 and / or the second spring 12 and / or the liquid and / or the second part anchor 7 are designed to meet certain conditions defined above.
• the effect of the coil 3 can be changed by their geometry and especially their number of turns.
• the effect of the yoke 8 can be influenced by its geometry and choice of material.
• the effect of the first spring 9 and the second spring 12 can be influenced by the spring constant and the number of turns.
• the effect of the first partial armature 6 can be influenced by the shaping, in particular the extension of the disc-shaped area directed laterally to the longitudinal extent of the coil, as well as by the magnetic properties of the material.
• the effect of the liquid can be influenced by the choice of the liquid with regard to its viscosity, wherein other aspects can be taken into account, such as the long-term stability of the relevant features, as well as the behavior of the liquid at different temperatures, frost resistance or high vapor pressure.
• the effect of the second part anchor 7, in addition to the choice of material with regard to the magnetic properties can be influenced mainly by the geometric shape.
• a hydrodynamic shaping for example, the damping of the movement of the second part armature 7 in the liquid can be influenced.
• the structural design of the first and second part anchors 6, 7 has proven to be advantageous in that a substantially immediate abutment of the two partial anchors, as shown in FIGS. 5 and 6, is made possible.
• the subject invention further includes a circuit breaker 2 with a subject trigger 1.
• a trigger 1 in a circuit breaker can be provided that at least one part of a contact apparatus of a circuit breaker 2 is arranged on the trigger 1 further.
• a designated as a fixed contact carrier 19 metal strip is fixed, which carries a housing-fixed electrical switching contact 18, and which in
• Fig. 1 shows a circuit breaker as an exemplary or preferred embodiment of a circuit breaker 2.
• the switch contacts 18, 21 are in the open position, where further well the switch lock 24 can be seen, which is arranged opposite the release plunger 16.
• the trigger 1 is arranged in such a way in the circuit breaker 2 that the trigger tube 4 triggers the switching mechanism 24 in a movement in the triggering direction 5.
• the relevant circuit breaker 2 is free of further triggers.
• the circuit breaker 2 is free of separately constructed overcurrent releases, especially free of bimetallic elements.
• the switching mechanism 24 of the circuit breaker is designed such that it performs certain movements for opening the switch contacts.
• the trigger in the circuit breaker 2 according to FIG. 1 is arranged relative to the switching mechanism 24 of the circuit breaker 2, that - in the case of tripping - the trigger tube 4 abuts against a portion of the latching mechanism 24, and such parts of
• Switching mechanism 24 accelerates in a, the opening of switch contacts supporting direction. Thereby, the shutdown or the process of separation of the switching contacts can be accelerated. As a result, a separation of the switching contacts can be forced independently of the prevailing current amplitude, in
• a trigger 1 has neither a first nor a second spring 9, 12.
• Such a trigger 1 is provided only for use in a specific operating position, wherein the second part of anchor 7 is arranged pointing to the ground or a center of gravity.
• Centrifugal acceleration such as centrifuges or rotating space stations, be provided, wherein the second sub-anchor 7 is held in this case by the centrifugal acceleration in its position.
• the trigger tube 4 by a foil or paper in its position is held within the trigger 1.
• the film can encompass approximately the trigger tube on the release extension 17.
• the film is designed such that it is strong enough, the trigger tube in cases where no triggering should take place, see in this respect the above explanations, holds in the trigger 1, and that it can be pierced by the release tube 4 in the case of release.
• it can also be provided to secure the first part anchor by means of a tear-off thread in its position.
• the tear thread can be fastened to a housing part of the switching device.
• Switching devices with such triggers 1 are suitable as a replacement for fuses, and have over these the advantages of a much more accurate tripping and low aging, since the tripping characteristic is not changed after the repeated occurrence of slight overcurrents, which did not lead to a tripping. Furthermore, these have an increased security against manipulation, as they can not be easily "patched" by laymen, as conventional fuses.
• the second spring 12 is arranged, which may also be referred to as Auslenserohrmnenfeder.
• the trigger 1 can be used in different operating positions, and there is greater freedom in defining the non-tripping current.

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• 2011
  • 2011-08-12 AT ATA1180/2011A patent/AT511791A2/de not_active Application Discontinuation
• 2012
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