CN107004546B - With passively heating and act on the breaker of the bimetallic element on the armature of electromagnetism trigger - Google Patents
With passively heating and act on the breaker of the bimetallic element on the armature of electromagnetism trigger Download PDFInfo
- Publication number
- CN107004546B CN107004546B CN201580062626.8A CN201580062626A CN107004546B CN 107004546 B CN107004546 B CN 107004546B CN 201580062626 A CN201580062626 A CN 201580062626A CN 107004546 B CN107004546 B CN 107004546B
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- bimetallic element
- tappet
- trigger
- armature
- breaker
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Classifications
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- 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
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic mechanism
-
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H2071/407—Combined electrothermal and electromagnetic mechanisms the thermal element being heated by the coil of the electromagnetic mechanism
Abstract
The present invention relates to a kind of breaker at least two connecting terminals, these connecting terminals are electrically connected in circuit breaker internal by switch contact (1).Furthermore, the breaker further includes the electromagnetism trigger (2) acted on switch contact (1) and acts on bimetallic element (4) on switch contact (1), and the coil (3) of the trigger is connected between at least two connecting terminal.In the breaker, being connected electrically in beside bimetallic element between at least two connecting terminal is passed through, and bimetallic element and electromagnetism trigger (2) thermal coupling.In addition, electromagnetism trigger (2) further includes the armature or tappet supported in a movable manner, bimetallic element (4) is directly or indirectly acted on this armature or tappet.
Description
Technical field
The present invention relates to a kind of breakers comprising: at least two connecting terminals, these connecting terminals are in circuit breaker internal
It is electrically connected by switch contact；The electromagnetism trigger on switch contact is acted on, coil is at least two connecting terminal
Between connect；And bimetallic-the actuator acted on switch contact either acts on the bimetallic member on switch contact
Part.
Background technique
Breaker (referred to as " LC- switch ", English is Circuit breaker) is for protecting circuit in order to avoid current loading mistake
It is high.Preset threshold value if more than then will disconnect the switch contact between connecting terminal and therefore interruptive current.
Triggering in regular circuit breakers usually with electromagnetic mode by bimetallic element manually and in many cases also by outer
Portion's interface is realized.
The purpose of electromagnetism triggering is, in the excess electric current time-division from circuit.Because electric current flows through the electromagnetism triggering of breaker
The coil of device and connecting terminal is also flowed through, so depending on current strength by the power that electromagnetism trigger generates.It is being more than
When specific threshold value, switch contact is disconnected by the power.The electromagnetism trigger is quickly made a response, therefore excess electricity
Delay time between the appearance of stream and the disconnection of switch contact is very short.
The triggering carried out by bimetallic element (mostly with bar form) is significantly slower, and should mainly prevent to continue
Overlong time, slightly above defined threshold value electric current.Bimetallic element is for this purpose between the connecting terminal of breaker
Electrical connection between connect, and therefore flowed by connecting terminal electric current percolation.Here, bimetallic element is according to its resistance
It heats, and is disconnected after delay time at leisure, which depends on current strength.Here, higher excess electricity
Stream can cause disconnection earlier, and lower electric current can cause slower disconnection.
Generally speaking, electromagnetism trigger or bimetallic element can be acted on directly or indirectly on switch contact.Latter
In the case of kind, electromagnetism trigger/bimetallic element can especially be acted on the lever system being connected with switch contact.
The shortcomings that known breaker is connection touching very high when bimetallic element is applied with, by breaker
The electric current of point flowing.Additionally due to part is more, the cost of breaker structure is excessively high.Finally, the electricity flowed by bimetallic element
Stream (it also plays Ohmic resistance) can also cause huge power loss, and therefore make the deterioration of efficiency of breaker.
Summary of the invention
Therefore the object of the present invention is to illustrate a kind of improved breaker.It especially should reduce or avoid bimetallic first
The current loading of part, and/or reduce the wasted power dropped on breaker and/or simplify the structure of breaker.
This purpose is achieved by the breaker of aforementioned type,
Being connected electrically in beside bimetallic element between at least two connecting terminal is passed through, and bimetallic element with
The electromagnetism trigger thermal coupling,
And electromagnetism trigger further includes that tappet, bimetallic element are direct in other words for the armature that supports in a movable manner
Or indirectly-acting is on this armature or tappet.
Passively bimetallic element is heated in this way, i.e., is only heated by the waste heat of electromagnetism trigger.Therefore,
Also the wasted power consumed on-board the circuit breaker can be reduced.In addition, in terms of having unified hot aspect and electromagnetism on space and function
Short-circuit trigger, that is to say, that they can constitute a component.To simplify the structure of breaker.
Therefore, the layout of the disclosure is especially suitable for applying in existing system.Switch contact or lever system are without thus
Change, because bimetallic element acts on switch contact/lever system indirectly by tappet.From switch contact/leverage
As viewed from the perspective of system, it can change nothing in this trigger mechanism of application.
For (that is, for bimetallic element) heat trigger of breaker, to make great efforts to be detached from ring
The influence of border temperature.Therefore quite high " operating temperature " (such as more than 100 DEG C), the i.e. bending of bimetallic element are selected herein
At a temperature of so it is big so that switch contact will disconnect.In addition, bimetallic element should have enough abilities to work, so as to
Trigger the trigger mechanism of breaker.That is, the product in path and power on the free end of bimetallic element should be enough
Greatly.For this purpose, must have enough spacing between operating temperature and reference temperature (such as 20 DEG C).
In the coil of the magnetic trigger of breaker, usually there is a temperature in areas of overload, which is enough to work as
Make bimetallic operating temperature.In addition, in most cases the heating function of the electromagnetism trigger be be enough to heat it is double
Hardware, and ensure reliably to trigger breaker by bimetallic element.
Be advantageous further for following situations for the principle of work and power: the coil for big rated current has
Less winding quantity under larger conductors cross has smaller conductors cross for the coil of small rated current on the contrary
Under relatively more winding quantity.Therefore, substantially the same magnetic force has been reached by big rated current range.Accordingly
Ground, it is identical for being converted into the power of heat.
Other advantageous construction plan and improvement plans of the invention are by dependent claims and from retouching in conjunction with attached drawing
It is obtained in stating.
But come it is further advantageous that bimetallic element is arranged to separate with electromagnetism trigger, especially with coil.Therefore, can
Good electrical isolation is realized between electromagnetism trigger, especially coil and bimetallic element.If the insulation of coil is for certain
Kind reason is impaired, then also can be avoided coil and pass through short circuit caused by bimetallic element.
In the preferred embodiment of breaker, bimetallic element and electromagnetism trigger, especially its coil are set in breaker
It sets to abut directly against.Bimetallic element can be heated effectively by heat radiation in this way." abutting directly against " is upper and lower herein
Literary middle finger, in electromagnetism trigger, especially between its coil and bimetallic element related with by radiation progress heat transmitting
It will not be shielded by other parts in region.The radiation issued in the region by electromagnetism trigger, especially its coil is at least
90% encounters bimetallic element unobstructedly.It is issued by electromagnetism trigger and due to electromagnetism trigger and bimetallic member
The mutual spatial position of part can reach the 90% of the radiation of bimetallic element.
It is particularly advantageous that at least in the region of this electromagnetism trigger and/or these electromagnetism trigger thermal couplings,
At least with the region of bimetallic element thermal coupling, bimetallic element is provided with coating, absorbs infrared radiation at least
90%.It is transmitted to heat on bimetallic element from electromagnetism trigger in this way.Bimetallic element and/or
Electromagnetism trigger can be applied correspondingly for this purpose.Absorption in order to realize good heat transmitting, in infrared spectral range
Ability is critically important, and the element centainly has the color different from black in visible wave-length coverage.
It is further advantageous that the top of electromagnetism trigger is arranged in bimetallic element, it is especially placed at the top of coil, or
It is also provided with guide device, for hot-air to be directed on bimetallic element from electromagnetism trigger.Bimetallic element can be with this
Kind mode effectively passes through Convective Heating.It is blown around Buddhist to bimetallic element herein simultaneously by the raised hot-air of electromagnetism trigger
And it is heated.Herein it is particularly advantageous that generating whirlpool particularly by the form of electromagnetism trigger, coil or guide device herein
Stream.
In the especially preferred embodiment of breaker, bimetallic element constitutes at least one of the iron yoke of electromagnetism trigger
Point.Therefore on the one hand on the other hand bimetallic element by eddy heating for heating, can constitute the magnetic iron yoke of electromagnetism trigger one
Part, therefore produce particularly evident synergy.If bimetallic element has relatively high iron composition, of the invention
This scheme can particularly effectively play a role.Generally speaking, it is vortexed the only heating to bimetallic element when frequency is 50Hz
Play relatively small contribution.
In a series of multiple breakers, it is also advantageous in this regard that these coils are made of the line of different-thickness, and have base
Identical diameter, especially outer diameter in sheet.Therefore, the different component part of structure type can be relatively in a series of breakers
It is few.Because all coils all have identical diameter (preferably identical outer diameter), and the part of breaker is without big adjusting
When be mutually matched.In the ideal case, breaker no setting is required the at all different component part of structure type.In advantageous scheme
In, the coil line of different-thickness can also be wound into the loop sleeve with different-diameter, therefore in a series of breakers
Produce the coil essentially identical with outer diameter.
In a series of multiple breakers, finally it is further advantageous that bimetallic element and electromagnetism trigger, especially its line
Spacing between circle is substantially identical big in multiple breakers.Therefore it realizes in this way, online astragal thickness
In a series of different breakers, the heat transmitting on electromagnetism trigger to bimetallic element is basically the same.
It is arranged transverse to armature/tappet direction of motion it is further advantageous that breaker has and acts on armature/tappet
On leaf spring, fixedly carry relative to electromagnetism trigger on one end, and the other end and bimetallic member
Part is connected, and especially hingedly supports and/or connects.
Advantageously, leaf spring action is in armature/tappet on the end of switch contact or lever system.Therefore, energy
The interface of enough simply holding armatures/between tappet and switch contact or lever system.In addition, this layout can also be used to now
Some systems, because the interface need not change thus.
It is further advantageous that leaf spring is placed only on armature/tappet.It is achieved that the simple structure of breaker.
It is further advantageous that leaf spring is blocked with armature/tappet is connect/.Therefore tractive force and pressure can be in leaf springs
It is transmitted between armature/tappet.
Advantageously, leaf spring/bimetallic element has forked end portions, in bimetallic element/leaf spring in cutting be embedded in this
In end.Therefore the rotary joint between leaf spring and bimetallic element can be realized in a simple manner.
It is further advantageous that leaf spring/tappet has groove, in tappet/leaf spring in cutting be embedded in this groove.It therefore can
The rotary joint between leaf spring and tappet is realized in a simple manner.
Advantageously, bimetallic element is bent away from electromagnetism trigger when heated.Therefore it by the combination with leaf spring, acts on
Power on tappet has trend of successively decreasing.Equally, there is incremental trend by the path that tappet is retracted, is for by bimetallic member
The path that the free end of part is retracted.
It is advantageous that bimetallic element bends towards electromagnetism trigger when heated.Therefore, bimetallic element can be pressed directly
On the tappet of electromagnetism trigger.Furthermore when combining with leaf spring, the power acted on tappet, which has, is incremented by trend.Equally, by
The path that tappet is retracted has the trend successively decreased, and is for the path retracted by the free end of bimetallic element.
Advantageously, compressed spring acts on armature/tappet, the power of the compressed spring is backwards to switch contact or leverage
System.Therefore, armature/tappet and leaf spring are independently pulled away from switch contact or lever system.Especially advantageous scheme is that leaf spring is only
It is placed on armature/tappet, but is not attached thereto/blocks.
It it is also especially favorable to, bimetallic element is being switched indirectly by the magnetic loop or yoke effect of electromagnetism trigger
On contact.If bimetallic element acts on the tappet of electromagnetism trigger, the reaction of bimetallic element can also be subtracted
It is few, because also will affect electromagnetism trigger by magnetic loop or magnetic yoke.
Herein it is further advantageous that at least one described bimetallic element is thus inserted into the magnetic loop or magnetic yoke of electromagnetism trigger
In, so that with magnetic loop/magnetic yoke magnetic is passed through in second temperature in the second position of at least one bimetallic element
It is logical to compare, by magnetic loop/magnetic yoke magnetic flux in the first position of at least one bimetallic element in the first temperature
It is smaller.Advantageously, the electromagnetic force of magnetic flux and generation in magnetic loop or magnetic yoke can influence the tappet of electromagnetism trigger.
Therefore, bimetallic element influences switch contact indirectly by electromagnetism trigger.Advantageously, what bimetallic element must apply
Power is very small, because it substantially plays switch.Therefore these bimetallic elements are able to maintain very small.
It is advantageous that the first temperature is less than second temperature.Therefore when temperature is higher, magnetic flux and electromagnetism is acted on
Power on the tappet of trigger is also bigger.Always therefore the increase of electric current can be such that the power increases, regardless of this point is by flowing through
The electric current of the coil of electromagnetism trigger realizes, or by by bimetallic element from first position change to the second position (the reason is that
The increase of electric current) it realizes.
It is particularly advantageous that breaker includes the air gap in magnetic loop/magnetic yoke, can according to it is described at least one
The temperature of bimetallic element is changeable.Therefore the magnetic flux in magnetic loop/magnetic yoke of electromagnetism trigger can be relatively strong by shadow
It rings, because depending on the size of the air gap by the magnetic resistance that the air gap is constituted.
It is further advantageous that being capable of basis for each bimetallic element just what a the air gap in magnetic loop/magnetic yoke
The temperature of the bimetallic element changes.Therefore electromagnetism trigger realizes relatively simple construction, because bimetallic element
One end can be fixedly linked with magnetic loop/magnetic yoke.
But it is further advantageous that being capable of root for each bimetallic element exactly two the air gap in magnetic loop/magnetic yoke
Change according to the temperature of the bimetallic element.The effect of bimetallic element can be enhanced in this way.
Advantageously, existing the air gap closing when there is second temperature at the first temperature.It can with this side
Keep bimetallic element especially big to magnetic loop/magnetic yoke influence of electromagnetism trigger.
Advantageously, just in what a bimetallic element insertion magnetic loop/magnetic yoke.Therefore electromagnetism trigger realizes relatively
Simple construction.
But it is further advantageous that in exactly two bimetallic element insertion magnetic loop/magnetic yoke.In corresponding design, if
Bimetallic element failure for some reason, then be also able to maintain the emergency function of electromagnetism trigger.
It is further advantageous that at least one bimetallic element is arranged to be parallel to the direction of motion of the tappet of electromagnetism trigger.
It is achieved that the especially compact structure of breaker.
It is last it is further advantageous that breaker have be arranged in magnetic loop/magnetic yoke inner edge and electromagnetism trigger coil it
Between plastic tube.In accordingly selection plastics, the friction between plastic tube and inner edge can be kept as smaller, and the inner edge is especially
It can be supported in plastic tube with elapsing.In addition, magnetic flux also concentrates on the inner edge.
Above-mentioned construction plan and improvement plan of the invention can be combined with method in an arbitrary manner.
Detailed description of the invention
The present invention is explained in detail by the embodiment being described in the accompanying drawings below.Wherein:
Fig. 1 shows the first embodiment of the trigger mechanism of breaker；
Fig. 2 shows the second embodiment of the trigger mechanism of breaker, the bigger cross section with coil line；
Fig. 3 shows the embodiment of trigger mechanism；Wherein bimetallic element is triggered indirectly by leaf spring action in electromagnetism
On the tappet of device；
Fig. 4 shows the layout shown in Fig. 3 in triggering state；
Fig. 5 shows another embodiment of trigger mechanism, and wherein bimetallic element is indirectly by leaf spring action in electromagnetism
On the tappet of trigger；
Fig. 6 shows the top view of illustrative leaf spring；
Fig. 7 shows the top view of illustrative bimetallic element；
Fig. 8 shows the embodiment of trigger mechanism, and wherein bimetallic element influences the magnetic loop or magnetic yoke of electromagnetism trigger.
Specific embodiment
Fig. 1 shows the first embodiment of the trigger mechanism of breaker.Breaker usually has at least two connecting terminals,
These connecting terminals are electrically connected in circuit breaker internal by switch contact 1.In addition, the breaker in other words it trigger mechanism also
Including the electromagnetism trigger 2 acted on switch contact 1 and bimetallic element 4 on switch contact 1 is acted on, the triggering
The coil 3 of device is connected between at least two connecting terminal.
Particularly, electromagnetism trigger 2 further include other than coil 3 in iron yoke 5 and Fig. 1 it is invisible, because drawn
The armature entered tappet in other words.Bimetallic element 4 is fixed on bimetallic-carrier 6, and can be by screw 7 (vertically,
In Fig. 1) its position is adjusted, which is guided by the nut 8 being fixed together with shell.Bimetallic-carrier 6 is supported on
On the shell 10 (only showing a part in Fig. 1) of breaker 1, and fixed in this way in order to avoid twisting.
It is capable of switching point or the trigger point of adjustment bimetallic element 4 in this way.In addition, bimetallic element 4 is towards electromagnetism
The spacing of trigger 2 can match with different size of coil 3.Although needing to have for different current strength different big
The coil 3 of small wire cross-section, and coil may also have different sizes, but the breaker for different electric currents can
It is configured to essentially identical.
Switch contact 1 includes fixed fixed contact 11 and moveable switch block 12, and the latter is also lever simultaneously
A part of system 13.In order to make it easy to understand, switch block 12 is marked with small circle, lever can be preferably illustrated so as to following
The function of system 13.Lever system 13 further includes switch block-support 14, around the axis being fixed together with shell
15 rotatably carry, and mark by point.Switch block 12 around axis 16 rotatably to support
, which is arranged on switch block-support 14.In addition, lever system 13 further includes pawl 17, around axis 18
It rotatably carries and is equally marked by point, which is arranged on switch block-support 14.In addition, lever
System 13 further includes pawl bracket 19, rotatably to carry around axis 15 and mark by small cross.
Finally, lever system 13 further includes torsionspring 20 and tension spring 21, which makes 19 phase of pawl 17 and pawl bracket
It mutually squeezes, and the power of the tension spring acts on switch block 12.
Interface line 22 and 23 is finally also shown in Fig. 1, they are by electromagnetism trigger or switch block 12 and breaker
The connecting terminal guided outwardly be connected.On the contrary, being connected electrically in by bimetallic element between at least two connecting terminal
Side is passed through.Finally, Fig. 1 also shows clamping plate 24, pawl 17 and the control-rod of breaker are connected.
The function that Fig. 1 shows trigger mechanism is as follows:
Bimetallic element 4 is straight in unlatching-position, therefore pawl bracket 19 is pressed in pawl 17 by torsionspring 20
Upper and pawl 17 is stuck in pawl bracket 19 by its protuberance.Therefore switch block-support 14, pawl 17 and pawl bracket 19
It can only move together, that is to say, that rotated around the axis 15 being fixed together with shell.Spring 21 is clockwise around axis
16 Drawing switch component 12 of line, therefore switch block 12 is remained closed in unlatching-position.If the control-rod of breaker moves now
To closing-position, then clamping plate 24 widdershins Drawing switch component-support 14, pawl 17 and pawl bracket 19 (they alternately
Block), and therefore make axis 16 towards moving right and disconnect switch contact 1 in order.
Another feasibility is can to trigger breaker by electromagnetism trigger 2.When electric current is excessively high, armature is pressed in spine
On pawl bracket 19, it is thus eliminated that the locking between pawl 17 and pawl bracket 19.Pawl bracket 19 and pawl 17 are then located at Fig. 1
Shown in position.Rotate switch block-support 14 counterclockwise around axis 15 by tension spring 21 now, wherein spine
Pawl 17 is shifted upward and is rotated clockwise herein.Therefore, the axis 16 being arranged on switch block-support 14 towards moving right, from
And disconnect switch contact 1.
Breaker is triggered in a similar manner by bimetallic element 4.In heat intensive, which is pressed in spine
On the protuberance of pawl bracket 19, therefore it is rotated around axis 15 counterclockwise again, and therefore eliminates pawl 17 and pawl bracket
Locking between 19.The state is shown in FIG. 1.The other motion process completely with the triggering realized by electromagnetism trigger
It is similar.
It with the triggering that bimetallic element 4 is realized is substantially that effect is identical by electromagnetism trigger 2.Only touched by electromagnetism
Position, direction and the size of the hair device power that bimetallic element 4 is applied on pawl bracket 19 in other words are different.But
Under both of these case, rotate pawl bracket 19 counterclockwise around axis 15.
By being arranged bimetallic element 4 near electromagnetism trigger 2, bimetallic element 4 passes through electromagnetism trigger 2
Waste heat.Electromagnetism trigger 2 heats the effect of winding simultaneously, and the major function of the electromagnetism trigger is to detect short circuit current simultaneously
And switch contact 1 is disconnected when there is excess electric current.It is achieved that the dual utilization of electromagnetism trigger 2.
The trigger mechanism shown in FIG. 1 of breaker also has the feature that
In this embodiment, bimetallic element 4, which is arranged to separate with electromagnetism trigger 2, especially with coil 3, comes.Therefore, energy
It is enough to realize good electrical isolation in electromagnetism trigger 2, especially between its coil 3 and bimetallic element 4.If coil 4 is exhausted
Edge is damaged for some reason, then also can be avoided coil 3 and pass through short circuit caused by bimetallic element 4.Bimetallic element 4 is arranged
Must be closer from electromagnetism trigger 2, then the heat transmitting from electromagnetism trigger 2 to bimetallic element 4 is better.
In addition, bimetallic element 4 and electromagnetism trigger 2, especially its coil 3 are arranged to abut directly against in breaker.
Bimetallic element 4 can be effectively heat by heat radiation in this way because in electromagnetism trigger 2, especially its coil 3
It transmits in related region and will not be shielded by other parts with by radiation progress heat between bimetallic element 4.By electromagnetism
At least the 90% of the radiation that trigger 2, especially its coil 3 issue in associated delivery area encounters bimetallic element unobstructedly
4.Herein it is further advantageous that bimetallic element 4 designs in this way, i.e., hot transmitting is carried out on surface as big as possible.
Herein it is further advantageous that at least in the area with this electromagnetism trigger 2 and/or these 2 thermal couplings of electromagnetism trigger
In domain, at least with the region of 4 thermal coupling of bimetallic element, bimetallic element 4 is provided with coating, absorbs infrared radiation
At least 90%.Particularly effectively heat is set to be transmitted to bimetallic element 4 from electromagnetism trigger 2 by radiation in this way
On.
It is further advantageous that bimetallic element is arranged in as shown in Figure 1 on electromagnetism trigger 2, be especially placed at coil 3 it
On.Bimetallic element 4 is not only heated by radiating also by the convection current of hot air exhausted in this way, and hot-air passes through electricity
Magnetic trigger 2 is increased and is brushed around bimetallic element 4.Alternatively or additionally, guide device can be also set,
For hot-air is directed on bimetallic element 4 from electromagnetism trigger 2.
Although the scheme shown in FIG. 1 of the trigger mechanism of breaker is advantageous, also it can be considered that other embodiments.It is logical
Often it is also feasible that being provided with intermediary element or middle layer (such as teflon, glass between bimetallic element 4 and electromagnetism trigger 2
Glass silk).Bimetallic element 4 for example can also contact bimetallic element, especially its coil 3, therefore bimetallic element 4 is effectively
It is heated by heat transfer.
It is further advantageous that bimetallic element 4 constitutes at least part of the iron yoke 5 of electromagnetism trigger 2.Such as thus can
Pass through iron yoke 5 from top from the side of coil 3.Therefore on the other hand 4 one side of bimetallic element is made up of eddy heating for heating
A part of the iron yoke 5 of electromagnetism trigger 2, therefore produce particularly evident synergy.If bimetallic element 4 has phase
To high iron composition, then this scheme of the invention can particularly effectively play a role.The coating of bimetallic element 4 usually all by
Magnetic steel is constituted, and can be simultaneously as the magnetic yoke of electromagnetism trigger 2 or a part of iron yoke 5.It is short in appearance in this scheme
It should be noted that the magnetic force on bimetallic element 4, and heating of the vortex to bimetallic element 4 when frequency is 50Hz when the electric current of road
It contributes relatively small.
Fig. 2 shows the schemes of the trigger mechanism of breaker now, very similar with scheme shown in FIG. 1.But with this
Unlike, the coil 3 of electromagnetism trigger 2 has the cross section more significantly larger than coil 3 shown in FIG. 1, therefore is suitable for more
Big rated current.In addition, the decurvation in front region of bimetallic element 4.But the function of trigger mechanism shown in Fig. 2
It can be substantially identical as trigger mechanism shown in FIG. 1.
Advantageously, as a series of coil 3 of multiple and different breakers of breakers is as illustrated in fig. 1 and 2 substantially
Have the same diameter (being internal diameter herein).Therefore, the different component part of structure type can be opposite in a series of breakers
It is less.In the ideal case, breaker no setting is required the at all different component part of structure type.
Advantageously, the spacing between bimetallic element 4 and electromagnetism trigger 2, especially its coil 3 is in a series of open circuits
It is substantially same big in multiple and different breakers of device, as schemed as shown in figs. 1 and 2.Therefore, online astragal is thick
It spends in a series of different breakers, the heat transmitting on electromagnetism trigger 2 to bimetallic element 4 is basically the same.
In a series of different breakers shown in Fig. 1 and 2, the internal diameter substantially having the same of coil 3.But this point
It is absolutely not enforceable.Such as it is also possible to consider, coil 3 all has substantially the same outer diameter.Therefore, with different thickness
It spends in a series of breakers of coil, and does not adjust the spacing of bimetallic element 4 by screw 7, electromagnetism trigger 2 to double gold
The heat transmitting belonged on element 4 is basically the same.For this purpose, the coil line of different-thickness can be wound into different-diameter
In loop sleeve, therefore the coil essentially identical with outer diameter is produced in a series of breakers.
By the way that replaceable transferring element (bimetallic element 4 is acted on pawl bracket 19 by it) is arranged, can obtain
To another feasible program, trigger mechanism is matched with different size of coil 3 in this scheme.Alternatively, also can for this purpose
The elbow of different length is set.
In an illustrated embodiment, bimetallic element 4 is bent towards coil 3 when heated.But trigger mechanism can also be done in this way
It constitutes, i.e., bimetallic element 4 is bent away from coil 3 when heated.Coil 3 can be for example arranged in bimetallic element 4 in fig 1 and 2
On, and for example act on the protuberance of pawl bracket 19.Advantageously, bimetallic element 4 is in its (unheated) start bit
It is very close that 3 are enclosed in setting offline.If decurvation, pawl bracket 19 move bimetallic element 4 counterclockwise when heated, therefore
This trigger mechanism is triggered in a manner of having described above.
As illustrated in fig. 1 and 2, bimetallic element 4 can initiatively apply the power as caused by thermoelasticity, to unlock
(Entklinken) trigger mechanism.But alternatively it is also contemplated that being pre-tightened to bimetallic element 4, and trigger mechanism is protected
It holds in open state.If the power is returned when heating bimetallic element 4, the trigger mechanism is triggered, i.e. separated switch contact
1。
Fig. 3 and 4 shows an embodiment of the trigger mechanism of breaker, and wherein bimetallic element 4 is indirectly by electromagnetism
Trigger 2 acts on the lever system that switch contact 1 is connected with switch contact in other words.Electromagnetism is merely illustrated in figures 3 and 4
Trigger 2 (together with the bimetallic element 4 of effect on it) and fixed contact 11.But the lever with switch block is not shown
System is configured to as Fig. 1 and 2.
Particularly, electromagnetism trigger 2 further includes the armature 25 that supports in a movable manner tappet in other words, bimetallic
Element 4 acts on this armature or tappet indirectly by the leaf spring 26 being arranged transverse to the direction of motion of armature/tappet 25.Piece
Spring 26 fixedly carries relative to electromagnetism trigger 2 on one end, and in the other end and 4 phase of bimetallic element
Even.Leaf spring 26 is especially carry by fixed rotary joint on one end, and in the other end and bimetallic element 4
Hingedly it is connected.
In addition, electromagnetism trigger 2 further includes the first and second sleeves 27 and 28 of magnetic loop, they are especially by ferromagnetic material
It is made.Armature/the tappet being preferably made from plastic can be supported in first sleeve 27 in which elapse, and by compressed spring
Therefore 29 are simultaneously independently pulled away from lever system with leaf spring 26 along the direction of leaf spring 26.Armature/tappet 25 is further supported at second sleeve
In 28, its own can be supported in the sleeve 30 being preferably made from plastic with elapsing.In addition, electromagnetism trigger 1 further include for
The fastening screw 31 of fixed bimetallic element 4.
The function of trigger mechanism shown in Fig. 3 and 4 is as follows, and wherein Fig. 3 shows the trigger mechanism to remain static, figure
4 show triggering state:
In state shown in Fig. 3, it is in reliable range by the electric current that breaker guides, therefore armature/tappet
25 are pulled in by compressed spring 29.If by breaker and therefore passing through the electric current that coil 3 guides to rise now, the two
On the other hand the one side of sleeve 27 and 28 is also heated bimetallic element 4 and is at a good pace bent outwards by electromagnetic attracting force.
If electric current (in a short time) is increased beyond trigger value, the two sleeves 27 and 28 are so consumingly overcome by electromagnetic force
The power of compressed spring 29 mutually pulls, so that armature/tappet 25 triggers unshowned lever system and therefore separated switch contact.
Synergistic effect is played at this, i.e., the air gap between the two sleeves 27 and 28 is more and more narrow herein, therefore magnetic flux or electromagnetic force
It is increasing.
But bimetallic element 4 can also be heated by the electric current that coil 3 flows, the power of leaf spring 26 is overcome and overcome compression bullet
The power of spring 29 is bent outwards.Therefore leaf spring 26 is pulled in the form more or less stretched, and therefore presses to armature/tappet 25 not
The lever system shown.In this case, the air gap persistently to narrow between the two sleeves 27 and 28 will lead to electromagnetism
The increase of power.
Therefore the contact of breaker both depends on the temperature of bimetallic element 4, also depend on the current electricity by coil 3
Stream.The temperature of bimetallic element 4 seemingly passes through the time integral of the electric current of coil 3, therefore the influence of bimetallic element 4 herein
Although dominant when there is for a long time but being only slightly above the electric current of reliable numerical value.But if electric current quickly on
It rises and far beyond reliable data, then influence of the electromagnetic force to armature/tappet 25 is dominant.
Generally speaking, be laid out shown in Fig. 3 and 4 also have the feature that leaf spring 26 act in this embodiment armature/
On the end of switch contact 1 or lever system 13 backwards of tappet 25.Therefore, it can simply holding armature/tappet 25 and open
Close the interface between contact 1 or lever system 13.In addition, this layout can also be used to existing system, because described connects
Mouth need not change thus.
In addition, leaf spring 16 is placed only on armature/tappet 25, therefore breaker has simple make.It is advantageous
It is that leaf spring 26 also has forked end, the cutting in bimetallic element 4 is embedded in this end (also referring to Fig. 6 and 7).Therefore
The rotary joint between leaf spring 26 and bimetallic element 4 can be realized in a simple manner.In order to realize this purpose, may be used also certainly
Consider, bimetallic element 4 has forked end portions, and the cutting in leaf spring 26 is embedded in this end.
In this embodiment, bimetallic element 4 is bent towards coil electromagnetism trigger 2 when heated.By with leaf spring 26
Combination, the power acted on tappet 25, which has, is incremented by trend.Equally, the path retracted by tappet 25 has the trend successively decreased,
It is for the path retracted by the free end (or the end acted in leaf spring 26) of bimetallic element 4.
Present Fig. 5 shows an embodiment, very similar with scheme shown in Fig. 3 and 4.Certainly, bimetallic element 4 is existing
It is being bent (solid line marks) upward in reset condition, and decurvation when heated (dotted line marks).Therefore, leaf spring 26 exists
Towards front curve when heating bimetallic element 4, and armature/tappet 25 is pushed along the lever system 13 only schematically shown.Herein
In example, armature/tappet 25 only passes through leaf spring 26 when electric current is low and is pulled away from lever system 13, until armature/tappet 25 is placed on
On shell siding 10.It is not provided with another compressed spring, but is not precluded using another compressed spring.Armature/tappet 25 is preceding
It is supported in square region in iron yoke 5, and is supported in plastic sleeve 30 in rear area.It is laid out shown in addition, and further includes
Insulator 32.
The function of trigger mechanism shown in fig. 5 is similar with the function of layout shown in Fig. 3 and 4.The contact of breaker is herein
Also the temperature for both depending on bimetallic element 4, also depends on the current flow by coil 3.The temperature of bimetallic element 4 is again
By the time integral of the electric current of coil 3, although therefore bimetallic element 4 influence occur only be slightly above for a long time
It is dominant when the electric current of reliable numerical value.But if electric current quickly rises and, then electromagnetism far beyond reliable data
Influence of the power to armature/tappet 25 is dominant, which pulls rank along the direction of lever system 13 in other words along the direction of iron yoke 5
Iron/tappet.
Fig. 6 shows leaf spring 26, and bimetallic element 4 is illustrated in detail in Fig. 7 in a top view now.It herein can be clearly
See some grooves, both parts are stuck each other by these grooves.Here, the double gold of forked protrusion insertion of leaf spring 26
In the cutting for belonging to element 4, therefore produce a kind of radial type connection.Leaf spring 26 is supported on iron in lower zone in a similar manner
In yoke 5.In order to realize this purpose, certainly it is also contemplated that bimetallic element 4 has forked end portions, the cutting in leaf spring 26
It is embedded in this end.Shown in be laid out certainly can not only be using on trigger mechanism shown in Fig. 5, but also can apply
On trigger mechanism shown in Fig. 3 and 4.
Generally speaking, it is shown in fig. 5 layout also have the feature that leaf spring 26 act also in this embodiment armature/
On the end of switch contact 1 or lever system 13 backwards of tappet 25.It therefore, and being capable of simply 24 He of holding armature/tappet
Interface between switch contact 1 or lever system 13, or it is also used for existing system.
In this embodiment, leaf spring 26 is also blocked with armature/tappet 25 is connect/.Therefore, tractive force and pressure can be
It is transmitted between leaf spring 26 and armature/tappet 25.
In the embodiment shown in fig. 5, bimetallic element 4 is also bent towards electromagnetism trigger 2 when heated.By with leaf spring
26 combination, the power acted on tappet 25, which has, is incremented by trend.Equally, the path retracted by tappet 25 has that successively decreases to walk
To being for the path retracted of free end (or the end acted in leaf spring 26) by bimetallic element 4.
Fig. 8 now illustrates another embodiment of trigger mechanism.Wherein bimetallic element 4 is indirectly by electromagnetism trigger
2 act on switch contact, in other words, act on the lever system of breaker being connected with switch contact (in this symbol
Ground is shown) on.Unlike scheme illustrated above, two bimetallic elements 4 are thus inserted into the magnetic loop of electromagnetism trigger 2
Or in magnetic yoke 5 so that in the second position of at least one bimetallic element (dotted line is shown) in second temperature lead to
It crosses magnetic loop/magnetic yoke magnetic flux to compare, by magnetic loop/magnetic yoke magnetic flux the first of at least one bimetallic element 4
It is smaller in the first temperature in position (solid line is shown).
Particularly, electromagnetism trigger 2 is gone back in addition to coil 3 and other than being placed in the central sleeve 30 being preferably made from plastic
There are two sleeve 27 and 28, front disk 33 and rear disks 24 for tool, they constitute magnetic loop/magnetic yoke a part.In addition, double
Hardware 4 also constitutes magnetic loop/magnetic yoke a part.
In this embodiment, exactly two bimetallic element 4 is inserted into magnetic loop/magnetic yoke.But it is also contemplated that only
One bimetallic element 4 or more bimetallic element 4 is inserted into magnetic loop/magnetic yoke.Bimetallic element 4 is set in this embodiment
Set to be parallel to the direction of motion of the tappet 15 of electromagnetism trigger 2.It is achieved that the especially compact structure of breaker.
The function of trigger mechanism shown in Fig. 8 is as follows:
Under static state, bimetallic element 4 is about straight in this embodiment, therefore in magnetic loop/magnetic yoke
The air gap is generated, the air gap is in connection with bimetallic element 4.In further heating, bimetallic element 4 is curved towards coil 3
Song, therefore the air gap is made to become smaller.Shown in electromagnetism trigger 2 in magnetic loop/magnetic yoke have the air gap, being capable of basis
The temperature of bimetallic element changes.Bimetallic element 4 is so consumingly bent from specific temperature, so that the air gap be made to seal
It closes.
Advantageously, the magnetic flux and resulting electromagnetic force in magnetic loop or magnetic yoke can influence electromagnetism trigger
2 tappet 25.Therefore, bimetallic element 4 acts as jointly therewith in other words indirectly by the influence switch contact of electromagnetism trigger 2
On lever system 13.In this layout advantageously, the power that bimetallic element 4 must apply in this layout is very small,
Because it substantially plays switch.Therefore these bimetallic elements 4 are able to maintain very small.
In this embodiment, exactly two the air gap is provided in magnetic loop/magnetic yoke, they can be according to described double
The temperature of hardware changes.But just what a sky of each bimetallic element 4 in magnetic loop/magnetic yoke be also contemplated that
Gas gap can change according to the temperature of the bimetallic element.Such as each end of each bimetallic element 4 can be with
Disk 33 or disk 34 are fixedly linked.
By the electric current by coil 3, electromagnetic force is produced on tappet 25 in sleeve 28 and thus, overcomes compression bullet
The power of spring 29 pulls this tappet along the direction of lever system 13.By the air gap persistently to narrow, electromagnetic force equally becomes to get over
Come bigger.But magnetic flux and electromagnetic force are also influenced by the air gap adjacent with bimetallic element 4.When the air gap is smaller
Magnetic flux and electromagnetic force are also bigger, but magnetic flux and electromagnetic force are then corresponding smaller when the air gap is larger.Therefore, bimetallic element
4 temperature also will affect the power acted on armature/tappet.
In trigger mechanism shown in Fig. 8.The contact of breaker also both depends on the temperature of bimetallic element 4 herein,
It is determined by the current flow of coil 3.By the time integral of the electric current of coil 3, therefore the temperature of bimetallic element 4 is again
Although the influence of bimetallic element 4 is dominant when there is for a long time but being only slightly above the electric current of reliable numerical value.But such as
Fruit electric current quickly rises and far beyond reliable data, then influence of the electromagnetic force to armature/tappet 25 is dominant, should
Power pulls armature/tappet along the direction of lever system 13 in other words along the direction of iron yoke 5.
Preferably, it is less than and the associated second temperature in smaller the air gap with associated first temperature in larger the air gap.
Therefore when temperature is higher, magnetic flux and the power then acted against on the tappet of electromagnetism trigger are also bigger.The increase of electric current because
Always this can be such that the power increases, regardless of this point is realized by flowing through the electric current of the coil 3 of electromagnetism trigger 2, still pass through
Bimetallic element 4 is changed to the second position (the reason is that increase of electric current) from first position to realize.
Trigger mechanism was generally speaking obtained, wherein bimetallic element 4 acts on switch touching indirectly by electromagnetism trigger 2
On point, in other words, acts on the lever system 13 of breaker being connected with switch contact (referring particularly to Fig. 3 to 8), especially answer
In existing system.Lever system 13 without changing thus because bimetallic element 4 as shown above indirectly
It is acted on lever system 13 by tappet 47.From the viewpoint of lever system 13, application this trigger mechanism when what
It will not change.
It is further noted that it should be noted here that the deformation of trigger mechanism shown in fig 1 and 2 substantially also can according to it
Enough apply the trigger mechanism shown in Fig. 3 to 8.Such as bimetallic element 4 can be held when heated with electromagnetism trigger 2 away from and
It sets.Bimetallic element 4 and electromagnetism trigger 2 also can be arranged to abut directly against in breaker.Furthermore it is also contemplated that extremely
It is few in the region of this electromagnetism trigger 2 and/or these 2 thermal couplings of electromagnetism trigger, at least with 4 heat of bimetallic element
In the region of coupling, bimetallic element 4 is provided with coating, absorbs at least the 90% of infrared radiation.It is also feasible that double gold
Belong to element 4 and the top of electromagnetism trigger 2 is set, or be also provided with guide device, is used to hot-air from electromagnetism trigger 2
It is directed on bimetallic element 4.It is also feasible that bimetallic element 4 constitutes electromagnetism trigger 2 in the scheme shown in Fig. 3 to 5
Iron yoke 5 at least part.Finally by embodiment shown in Fig. 3 to 8, additionally it is possible to a series of multiple breakers are constituted,
In these coils be made of the line of different-thickness, and have basically the same diameter, especially outer diameter (thus referring to Fig.1
With 2).Spacing between bimetallic element 4 and electromagnetism trigger 2 is substantially identical big in multiple breakers
's.
It is lastly noted that trigger device is not drawn to show and therefore may have other ratios.In addition, the triggering fills
Setting also can include the more or fewer parts of the part than shown in.Position state (such as "upper", "lower", " right side ", " left side ") and
The attached drawing of each self-described is related, and in position change with new location matches.4 energy of electromagnetism trigger 2 and bimetallic element
It is enough vertically provided, come horizontally disposed shown in replacing.Finally it shall yet further be noted that above-mentioned construction plan and improvement plan of the invention
It can be combined in an arbitrary manner with method.
Claims (9)
1. a kind of breaker, it includes:
At least two connecting terminals, these connecting terminals are electrically connected in circuit breaker internal by switch contact (1)；
Act on switch contact (1) or act on the electromagnetism trigger on the lever system (13) being connected with switch contact (1)
(2), coil (3) is connected between at least two connecting terminal；And
At least one acts on switch contact (1) or acts on double on the lever system (13) being connected with switch contact (1)
Hardware (4),
Wherein being connected electrically in beside bimetallic element (4) between at least two connecting terminal is passed through, and bimetallic member
Part (4) and electromagnetism trigger (2) thermal coupling,
Wherein electromagnetism trigger (2) further includes the armature supported in a movable manner or tappet (25), and bimetallic element (4) is straight
It connects or indirectly-acting is on this armature or tappet (25), which is characterized in that
Breaker, which has, to be arranged transverse to the direction of motion of armature or tappet (25) and acts on armature or tappet (25)
Leaf spring (26), the leaf spring fixedly carry relative to electromagnetism trigger (2) on one end, and the other end with
Bimetallic element (4) is connected, and
The bimetallic element (4) is parallel to the direction of motion arrangement of the armature or tappet (25).
2. breaker according to claim 1, which is characterized in that leaf spring (26) acts on armature or tappet (25) backwards
On the end of switch contact (1) or lever system (13).
3. breaker according to claim 2, which is characterized in that leaf spring (26) is placed only on armature or tappet (25).
4. breaker according to any one of claim 1 to 3, which is characterized in that the leaf spring (26) and armature or tappet
(25) it is connected or blocks.
5. breaker according to claim 1, which is characterized in that leaf spring (26) or bimetallic element (4) have fork end
Portion, in bimetallic element in (26) or cutting in leaf spring (26) be embedded in this end.
6. breaker according to claim 1, which is characterized in that leaf spring (26) or tappet (25) have groove, tappet
(25) cutting in or leaf spring (26) is embedded in this groove.
7. breaker according to claim 1, which is characterized in that bimetallic element (4) is bent away from electromagnetism triggering when heated
Device (2).
8. breaker according to claim 1, which is characterized in that bimetallic element (4) bends towards electromagnetism triggering when heated
Device (2).
9. breaker according to claim 1, which is characterized in that compressed spring acts on armature or tappet (25), should
The power of compressed spring is backwards to switch contact (1) or lever system (13).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014117034.2A DE102014117034A1 (en) | 2014-11-20 | 2014-11-20 | Circuit breaker with passively heated and acting on a percussion anchor of an electromagnetic release bimetallic element |
| DE102014117034.2 | 2014-11-20 | ||
| PCT/EP2015/077020 WO2016079206A1 (en) | 2014-11-20 | 2015-11-18 | Circuit breaker comprising a passively heated bimetal element acting on a striking armature of an electromagnetic tripping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107004546A CN107004546A (en) | 2017-08-01 |
| CN107004546B true CN107004546B (en) | 2019-01-15 |
Family
ID=54601779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580062626.8A Active CN107004546B (en) | 2014-11-20 | 2015-11-18 | With passively heating and act on the breaker of the bimetallic element on the armature of electromagnetism trigger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3221879B1 (en) |
| CN (1) | CN107004546B (en) |
| DE (1) | DE102014117034A1 (en) |
| WO (1) | WO2016079206A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054066B (en) * | 2017-12-15 | 2023-09-12 | 浙江正泰电器股份有限公司 | Cold bending rotating shaft structure of electromagnetic release of circuit breaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037490A1 (en) * | 1980-04-03 | 1981-10-14 | BROWN, BOVERI & CIE Aktiengesellschaft Mannheim | Release system of an automatic circuit breaker for the interruption of a circuit |
| DE3637275C1 (en) * | 1986-11-03 | 1988-05-05 | Flohr Peter | Overcurrent trip device for protection switching apparatuses |
| EP0849761A2 (en) * | 1996-12-20 | 1998-06-24 | ABBPATENT GmbH | Overcurrent and short circuit trip device for an electric circuit breaker |
| EP1083586A2 (en) * | 1999-09-07 | 2001-03-14 | ETI Elektroelement d.d. | Trip device for a circuit breaker |
| WO2006056337A1 (en) * | 2004-11-22 | 2006-06-01 | Abb Patent Gmbh | Switching equipment comprising an electromagnetic trip device |
| WO2014083191A1 (en) * | 2012-11-29 | 2014-06-05 | Eaton Industries (Austria) Gmbh | Circuit breaker having a passively heated bimetal element |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472696A (en) * | 1982-12-27 | 1984-09-18 | Gte Laboratories Incorporated | Circuit breaker |
| NL8900007A (en) * | 1989-01-03 | 1990-08-01 | Holec Syst & Componenten | STEERING FOR AN ELECTRIC SWITCH, AND AN ELECTRIC SWITCH EQUIPPED WITH THIS STEERING. |
-
2014
- 2014-11-20 DE DE102014117034.2A patent/DE102014117034A1/en not_active Withdrawn
-
2015
- 2015-11-18 WO PCT/EP2015/077020 patent/WO2016079206A1/en active Application Filing
- 2015-11-18 CN CN201580062626.8A patent/CN107004546B/en active Active
- 2015-11-18 EP EP15797318.1A patent/EP3221879B1/en not_active Not-in-force
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037490A1 (en) * | 1980-04-03 | 1981-10-14 | BROWN, BOVERI & CIE Aktiengesellschaft Mannheim | Release system of an automatic circuit breaker for the interruption of a circuit |
| DE3637275C1 (en) * | 1986-11-03 | 1988-05-05 | Flohr Peter | Overcurrent trip device for protection switching apparatuses |
| EP0849761A2 (en) * | 1996-12-20 | 1998-06-24 | ABBPATENT GmbH | Overcurrent and short circuit trip device for an electric circuit breaker |
| EP1083586A2 (en) * | 1999-09-07 | 2001-03-14 | ETI Elektroelement d.d. | Trip device for a circuit breaker |
| WO2006056337A1 (en) * | 2004-11-22 | 2006-06-01 | Abb Patent Gmbh | Switching equipment comprising an electromagnetic trip device |
| WO2014083191A1 (en) * | 2012-11-29 | 2014-06-05 | Eaton Industries (Austria) Gmbh | Circuit breaker having a passively heated bimetal element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3221879A1 (en) | 2017-09-27 |
| CN107004546A (en) | 2017-08-01 |
| WO2016079206A1 (en) | 2016-05-26 |
| EP3221879B1 (en) | 2019-05-01 |
| DE102014117034A1 (en) | 2016-05-25 |
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