CN103035428B - For the auxiliary contact device of medium voltage switchgear equipment - Google Patents
For the auxiliary contact device of medium voltage switchgear equipment Download PDFInfo
- Publication number
- CN103035428B CN103035428B CN201210366413.2A CN201210366413A CN103035428B CN 103035428 B CN103035428 B CN 103035428B CN 201210366413 A CN201210366413 A CN 201210366413A CN 103035428 B CN103035428 B CN 103035428B
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- shaft portion
- contact
- movable contact
- insulated leg
- auxiliary contact
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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
- H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/12—Means for indicating condition of the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0066—Auxiliary contact devices
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Contacts (AREA)
- Push-Button Switches (AREA)
Abstract
The present invention discloses a kind of auxiliary contact device for medium voltage switchgear equipment, comprising: fixed contact subgroup part, and it comprises at least one pair of fixed contact; Movable contact subgroup part, it comprises at least one movable contact that can be connected with rotating with described fixed contact; Operating axis, it comprises the first shaft portion being operationally connected with linear actuators, and the 2nd shaft portion being operationally connected with described movable contact subgroup part. Described first and second shaft portions of described axle are connected to each other, and linearly move between the first position and the second position together. Described 2nd shaft portion of described axle rotates freely between the third and fourth position relative to described first shaft portion.
Description
Technical field
The present invention relates to the auxiliary contact device for middle pressure (MV) switching device such as isolating switch, contactor, isolator etc.
With regard to the object of the application, term " middle pressure " refers to the equipment worked 1 to 50kV scope.
Background technology
The use of auxiliary contact device in medium voltage panel is well-known.
In medium voltage panel, auxiliary contact device is operably connected to master switch facility usually.
Especially, auxiliary contact device is connected with the actuating component of master switch facility, and drives by described actuating component, to switch between corresponding to the different transformation condition of the different switch states of master switch facility.
Usually, auxiliary contact device comprises multipair fixed contact and multiple movable contact.
Movable contact is arranged on the driving shaft, and described drive shaft is connected with the actuating component of master switch facility.
Switch state according to master switch facility, actuating component passes to drive shaft by mobile for translation, and the position that movable contact moves to corresponding fixed contact is connected or separates.
The connection of movable contact and corresponding fixed contact/separately determine is through the passing through/interrupt of signalling current of fixed contact.
Signalling current is received by telltale or monitors, and thus described telltale can inform the transformation of master switch facility towards certain switch state with signal.
Current available auxiliary contact device has some defects.
On-site experience generally shows, jitter phenomenon usually occurs at the electrical contact place of auxiliary contact device, when particularly standing unexpected vibration or other mechanical stresses when drive shaft.
This problem may cause the signal error sending the switch state of master switch facility, and the possibility of result makes medium voltage panel generation fault.
Another defect of traditional auxiliary contact device is, it has quite low disconnection capacity usually.
Practice shows, the electric discharge between electrical contact may even occur when movable contact is in point open position relative to corresponding fixed contact. This trouble may cause the signal error sending the switch state of master switch facility, or judges fault occur.
Summary of the invention
It is an object of the invention to provide a kind of auxiliary contact device for medium voltage switchgear equipment, it can overcome problem above-mentioned.
More specifically, it is an object of the present invention to provide a kind of auxiliary contact device, it can obtain the reliable signal of the switch state of the operationally coupled master switch facility of described auxiliary contact device.
It is also another object of the present invention to provide a kind of auxiliary contact device, it has the disconnection capacity (interruptioncapacity) improved relative to current available auxiliary contact device.
It is a further object to provide a kind of auxiliary contact device, its can industrialization cost and easily manufacture with the competitive cost of tool.
According to the present invention, it provides a kind of auxiliary contact device for medium voltage switchgear equipment, comprising: fixed contact subgroup part, it comprises at least one pair of fixed contact; Movable contact subgroup part, it comprises at least one movable contact being rotatably connected with described fixed contact; Operating axis, it comprises the first shaft portion being operationally connected with linear actuators, the 2nd shaft portion being operationally connected with described movable contact subgroup part, described first and second shaft portions are connected to each other, and both linearly move together between the first position and the second position, described first and second shaft portions coaxially are arranged or along parallel longitudinal axis arranged, described 2nd shaft portion rotates freely between the third and fourth position relative to described first shaft portion.
In general definition, comprising according to the auxiliary contact device of the present invention: fixed contact subgroup part, it comprises at least one pair of fixed contact; Movable contact subgroup part, it comprises at least one movable contact being rotatably connected with described fixed contact; Operating axis, it comprises the first shaft portion being operationally connected and the 2nd shaft portion being operationally connected with described movable contact subgroup part with linear actuators.
According to the present invention, the first and second shaft portions of described axle are connected to each other, and both linearly move together between the first position and the second position, and described 2nd shaft portion rotates freely between the third and fourth position relative to described first shaft portion.
In a preferred embodiment of the invention, described fixed contact subgroup part comprises base, and described 2nd shaft portion is connected with described base, to realize the rotation of described 2nd shaft portion between described third and fourth position.
Preferably, described 2nd shaft portion is connected with the base by thread coupling device of described fixed contact subgroup part.
Preferably, described first shaft portion comprises first end, and the 3rd end of first end and described 2nd shaft portion is by being configured for preventing described first and second shaft portions to be operably connected along the coupling device of linear travel direction relative movement.
In a preferred embodiment of the invention, described movable contact subgroup part comprises the insulated leg being operatively connected with described 2nd shaft portion and the conductive contact sheet being rigidly connected with described insulated leg.
Preferably, described movable contact subgroup part comprises pair of conductive contact blade, and itself and described insulated leg are rigidly connected.
Preferably, described 2nd shaft portion is operably connected with described movable contact subgroup part, so that rotary motion is only transmitted between these components.
Especially, described 2nd shaft portion comprises the 4th end in the chamber being inserted in described insulated leg, described 4th end vacant land in described chamber moves and linearly moves, and is configured as and the described rotary motion between described third and fourth position is transmitted between described 4th end and described insulated leg.
In a preferred embodiment of the invention, described fixed contact subgroup part comprises multipair fixed contact, and described movable contact subgroup part comprises multiple corresponding movable contact, and each movable contact can be rotatably connected with the fixed contact tackled mutually.
Preferably, described movable contact subgroup part comprises multiple insulated leg and corresponding conductive contact sheet, and it is stacked along the linear travel direction being parallel to described first and second shaft portions each other.
Preferably, one or more in pair of conductive contact blade and described insulated leg are rigidly connected, and each conductive contact sheet form the movable contact can being rotatably connected with the fixed contact tackled mutually.
Accompanying drawing explanation
Other features and advantages of the present invention manifest from the description of preferably but unique embodiment of the auxiliary contact device according to the present invention, and the non-limiting example of the present invention provides in the accompanying drawings, wherein:
Fig. 1 shows the schematic exploded view of the auxiliary contact device according to a preferred embodiment of the invention;
Fig. 2 shows some explanatory views of the auxiliary contact device shown in Fig. 1;
Fig. 3 shows the schematic exploded view of the subgroup part in the auxiliary contact device shown in Fig. 1;
Fig. 4 shows another schematic exploded view of the subgroup part shown in Fig. 3;
Fig. 5 shows some views of the parts of the auxiliary contact device shown in Fig. 1;
Fig. 6 shows some views of the parts of the auxiliary contact device shown in Fig. 1;
Fig. 7 shows some views of the parts of the auxiliary contact device shown in Fig. 1;
Fig. 8 shows the other view of parts shown in Fig. 7;
Fig. 9 shows the view of the parts of the auxiliary contact device shown in Fig. 1;
Figure 10 shows the view of the parts of the auxiliary contact device shown in Fig. 1.
Embodiment
With reference to the accompanying drawing quoted, the present invention relates to the auxiliary contact device 1 for medium voltage switchgear equipment.
When being arranged in medium voltage panel, auxiliary contact device 1 is operationally connected with the linear actuators (not shown) of master switch facility, namely with can along linear travel direction 100 (Fig. 1) transmit translation movement actuator be connected.
Auxiliary contact device 1 comprises fixed contact subgroup part 2 and movable contact subgroup part 3.
Preferably, the lid 24 that fixed contact subgroup part 2 comprises base 23 and is connected with described base, thus it is defined for the internal space 10 holding movable contact subgroup part 3.
Fixed contact subgroup part 2 comprises at least one pair of fixed contact 21, and it preferably has the first part 211 being positioned at internal space 10 and the second section 212 being positioned at outside described internal space.
First and second parts 211 and 212 can conveniently have L-shaped profile, as shown in Figure 9, to reduce the overall size of fixed contact subgroup part 2.
But, electrical contact 21 can have different shapes as required.
Preferably, fixed contact 21 is operably connected with telltale (not shown), and described telltale advantageously can receive or monitor the signalling current (signalingcurrent) that may flow through described fixed contact.
Movable contact subgroup part 3 at least comprises movable contact 31A, 31B, and it can be rotatably connected with fixed contact 21.
In a preferred embodiment, fixed contact subgroup part 2 comprises multipair fixed contact 21, and movable contact subgroup part 3 comprises the multiple corresponding movable contact 31A can being rotatably connected to described fixed contact, 31B.
Auxiliary contact device 1 also comprises operating axis 4, and it is operably connected with the linear actuators (not shown) mentioned and movable contact subgroup part 2.
Axle 4 comprises: the first shaft portion 41, first shaft portion is operably connected with linear actuators; With the 2nd shaft portion 42, it is operably connected with movable contact subgroup part 2.
According to the present invention, the first and second shaft portions 41,42 are connected to each other, and a linear movement between the first and second positions.
As seen from Figure 4, the first and second shaft portions 41,42 can advantageously extend along different longitudinal axis 410 and 420, and described longitudinal axis 410 is parallel with linear travel direction 100 with 420.
The internal space 10 held needed for movable contact subgroup part 3 owing to providing, therefore this technical scheme allows the overall size reducing fixed contact subgroup part 2.
But, as an alternative, shaft portion 41,42 can be directed at along identical axis.
Preferably, the first axle portion 41 comprises first end 411 and the 2nd end 412.
This first end 411 is advantageously operably connected with the 3rd end 412 of shaft portion 42.
Preferably, first end 411 is configured as to limit and keeps surface 413, and described maintenance surface 413 is mated with the connecting surface 424 of the 3rd end 421 of shaft portion 42.
Coupling device 413,424 between the end 411 and 421 of shaft portion 41,42 advantageously is configured for preventing shaft portion 41,42 along the relative movement (or disconnection) of linear travel direction 100.
Thus this coupling device 413,424 guarantees that shaft portion 41,42 moves together rigidly along linear travel direction 100.
2nd end 412 of the first shaft portion 41 is operably connected with linear actuators.
As shown in the drawing, the 2nd end 412 can comprise forked head, and described forked head configuration becomes for being connected with the motion-transmitting member of linear actuators.
But, the 2nd end 412 can comprise the head of different shapes as required, such as polygonal head or rounded nose.
2nd shaft portion 42 preferably includes the 3rd end the 421, three end above-mentioned and is advantageously configured as restriction connecting surface 424, and described connecting surface 424 is mated with the connecting surface 413 of the first end 411 of the first shaft portion 41.
2nd shaft portion 42 also comprises the 4th end the 422, four end and is operably connected with movable contact subgroup part 3.
According to the present invention, the 2nd shaft portion 42 rotates freely between the third and fourth position relative to the first shaft portion 41.
In a preferred embodiment, 2nd shaft portion 42 is operably connected with the base 23 of fixed contact subgroup part 2, make: when the first and second shaft portions 41,42 linearly move together between the first and second positions so that the 2nd shaft portion 42 rotates between the third and fourth position.
Preferably, shaft portion 42 is threaded connection device 424,231 with base 23 and is connected.
Advantageously, shaft portion 42 comprises groove 423, and groove has the volution profile extended along axis 420. Groove 423 its obviously form a box thread and advantageously connect to tooth 231 that is outstanding from base 23 and that form corresponding male thread.
The screw connection illustrated above can be different patten's design, such as make box thread be formed in base 23 place, make male thread be formed in the 2nd shaft portion 42 place.
Described screw connection between shaft portion 42 and base 23 makes the 2nd shaft portion 42 be rotated when shaft portion 41,42 linearly moves.
Described coupling device between the end 411,421 in axle portion 41,42 does not hinder rotating freely of shaft portion 42, and these coupling devices are configured to only maintain the connection of shaft portion 41,42 along linear travel direction 100.
In like fashion, when shaft portion 41,42 (is parallel to linear travel direction 100) between the first and second positions together and linearly moves, the 2nd shaft portion 42 rotates freely between the third and fourth position around its axis 420.
Therefore, when the first shaft portion 41 only carries out translating mobile, the 2nd shaft portion 42 carries out roto-translatory and moves.
Preferably, movable contact subgroup part 3 comprises at least one insulated leg 31, and at least one conductive contact sheet 31A being rigidly connected with described insulated leg, 31B. Described at least one contact blade 31A, 31B form the movable contact of movable contact assembly 3, and it can be connected with the fixed contact 21 tackled mutually of fixed contact subgroup part 3 in a rotative pattern.
Preferably, insulated leg 31 has central body 312, and described central body 312 has the first surface 3121 and the 2nd surface 3124.
Preferably, the first surface 3121 is provided with the first joint device 3122, first and engages device and engage device 3123 with the be arranged on the 2nd surface 3124 the 2nd and mate.
Preferably, the first joint device 3122 is the protuberance formed on the first surface 3121, and the 2nd joint device 3123 is seat that is that formed on the 2nd surface 3124 and that mate with described protuberance 3122.
Insulated leg 31 advantageously comprises chamber 311, and the whole length of described insulated leg is preferably run through in described chamber.
Preferably, insulated leg 31 is operably connected with the 2nd shaft portion 42 at the 4th end 422 place of the 2nd shaft portion 42.
The end 422 of the 2nd shaft portion 42 is inserted in chamber 311, and advantageously can move and linearly move along described chamber by vacant land (idle).
Owing to the vacant land of end 422 along chamber 311 moves, even if therefore the 2nd shaft portion 42 is as described above carries out roto-translative motion, still can not transmit translation between the 2nd shaft portion 42 and insulated leg 31 (and more generally, movable contact subgroup part 3) mobile.
But more generally, the 2nd shaft portion 42 is connected with insulated leg 31, so that rotary motion can be transmitted between the 2nd shaft portion 42 and insulated leg 31 (movable contact subgroup part 3).
In fact, the end 422 of the 2nd shaft portion 42 is shaped so that: the rotary motion between described third and fourth position is transmitted between the 2nd shaft portion 42 and insulated leg 31.
Preferably, end 422 comprises shaping head 422A, and it mates with the respective inner surfaces 311A in chamber 311 so that rotary motion can be transmitted between the 2nd shaft portion 42 and insulated leg 31.
Preferably, as shown in the drawing, the head 422A and connecting surface 311A of shaping have the square contour matched each other.
But, can suitably select other coupling profiles to guarantee effective transmission of the rotary motion between the 2nd shaft portion 42 and insulated leg 31.
According to preferred embodiment, as shown in the accompanying drawing quoted, movable contact subgroup part 3 comprises multiple insulated leg 31 and corresponding conductive contact sheet 31A, 31B, and these insulated legs and conductive contact sheet are stacked on top of each other along the axis being parallel to linear travel direction 100.
Preferably, insulated leg 31 and corresponding contact blade 31A, 31B are stacked along the identical axis 420 of the 2nd shaft portion 42.
The stacked of insulated leg 31 can advantageous by by the first of each insulated leg the surface 3121 with realize from the 2nd shaft portion 42 along the 2nd of next insulated leg in terms of distal direction the surperficial 3124 juxtapositions.
Thus first joint device 3122 of each insulated leg can be connected with the 2nd joint device 3123 of an insulated leg below.
As described above, at least one contact blade 31A, 31B and corresponding insulated leg 31 are rigidly connected at the first surperficial 3121 places of this insulated leg 31.
Preferably, movable contact subgroup part 3 comprises pair of conductive contact blade 31A, 31B, and described conductive contact sheet is rigidly connected at the first surperficial 3121 places of described insulated leg and one or more insulated leg 31.
Each to contact blade 31A, 31B formation movable contact, it can be connected with the fixed contact 21 tackled mutually with rotating.
Each contact blade 31A, 31B can be connected according to the first surface 3131 of the different positions of the predetermined angular that staggers (preferably 90 ��) and corresponding insulated leg.
In like fashion, can suitably arrange the contact blade 31A being connected with each insulated leg 31,31B, thus when occupying the 3rd or the 4th position when the bearing 31 being attached thereto, it is connected with the fixed contact 21 tackled mutually of fixed contact assembly 2 or disconnects.
By for normally closed formula or open in usual this, the movable contact 31A of movable contact assembly 3,31B depend on that (the normal switch state corresponding to master switch facility) these movable contacts are connected with corresponding fixed contact 21 or disconnect when auxiliary contact device 1 is in normal operating state.
Being apparent that from above, movable contact subgroup part 3 comprises the modular structure 300 along the Axis Extension being parallel to linear travel direction 100.
In this modular structure, it is in and it is operably connected from the insulated leg 31 of the 2nd shaft portion 42 proximal most position and the 2nd end 422 of the 2nd shaft portion 42.
All insulated legs 31 are stacked on top of each other along axis (such as axis 420), and can transmit rotation each other between described third and fourth position.
Contact blade 31A, 31B are rotated by each of this modular structure 300 together with corresponding insulated leg 31, described each contact blade 31A, 31B are rigidly connected to described corresponding insulated leg 31.
Adopt described modular structure to provide and manufacture the time of auxiliary contact device 1 and the associated advantages of cost reduction with industry level.
According to preferred embodiment, each contact blade of movable contact 31A, 31B is formed by flat centre ring 315, and two symmetrical T-shaped fins 316 outwards extend from described center ring, and relative to described center ring horizontal expansion.
When movable contact is formed by multipair contact blade, contact blade 31A, 31B are connected to each other along public contact plane (not shown) at heart ring 315 place wherein.
Advantageously, contact blade 31A, 31B be (reciprocally) location reciprocally, so that the T-shaped fin 316 of each contact blade is from described public contact plane, deviate in the opposition side of this plane.
When connecting along described public plane, described contact blade 31A, 31B reciprocally locates, so that each T-shaped fin 316 of contact blade 31A is arranged on opposite location relative to the corresponding T-shaped fin 316 of contact blade 31B sentences described public contact plane words as a reference plane.
Each contrary T-shaped fin 316 is configured to the L-shaped part 211 with electrical contact 21 it is connected.
As shown in Figure 10, thus the profile of T-shaped fin 316 can suitably be arranged so that can set up the stable connection between contrary T-shaped fin 316 and corresponding electrical contact 21.
Preferably, auxiliary contact device 1 comprises the first returning spring 51, this first returning spring is operably connected with the 2nd shaft portion 42 and movable contact assembly 2, to resist described shaft portion 41 and 42 from described first location towards the linear movement of the described second position, or conversely.
First returning spring 51 advantageously end 422 with the 2nd shaft portion 42 coaxially is connected.
As shown in fig. 1, the first returning spring 51 can be arranged on outside relative to described movable contact subgroup part 3.
Or, the chamber 311 that described first returning spring 51 can be arranged on the insulated leg 31 that the end 422 with the 2nd shaft portion 42 is connected is inner.
Preferably, described auxiliary contact device 1 also comprises the 2nd returning spring 52,2nd returning spring is operably connected with movable contact subgroup part 3 and fixed contact subgroup part 2, to resist insulated leg 31 from described 3rd position towards the rotary motion of described 4th position, or conversely.
Advantageously, described 2nd returning spring 52 is whisker, and it is operationally connected with the first surface 3121 of the insulated leg 31 from the 2nd shaft portion 42 highest distance position place.
The operation of auxiliary contact device 1 is described now more in detail.
In normal operation state, it may corresponding to the common first switch state (such as "ON" switch state) of master switch facility, first and second shaft portions 41,42 occupy first location (along linear travel direction 100), and shaft portion 42 occupies the 3rd position (relevant around the rotary motion of axis 420 to it) with movable contact assembly 3.
When master switch facility forwards the 2nd switch state (such as "Off" switch state) to from the first switch state, linear actuators is delivered to axle 4 along linear travel direction 100 by linearly mobile.
Due to the coupling device 413,424 between the first shaft portion 41 and the end 411 and 421 of the 2nd shaft portion 42, therefore the first shaft portion 41 moves to the second position in linearly moving mode from first location together with the 2nd shaft portion 42.
The end 422 of the 2nd shaft portion 42 is moved along chamber 311 vacant land of the insulated leg 31 being operably connected with it, thus does not translate movement and be delivered to movable contact subgroup part 3.
The linear movement of the first shaft portion 41,42 also makes the first returning spring 51 be compressed, and it stores elastic energy.
In the linear moving process of shaft portion 41,42, the 2nd shaft portion 42 is due to its being threaded and be free to rotate to the 4th position around axis 420 from the 3rd position with base 23.
Should rotating freely, towards described 4th position, all insulated legs 31 being delivered to movable contact assembly 3, thus described movable contact assembly 3 also rotates towards described 4th position.
The movable contact (preferably each movable contact is formed by one couple of contact blade 31A, 31B) of movable contact assembly 3 is as long as being also rigidly connected towards described 4th position rotation is each to contact blade 31A, 31B and corresponding insulated leg 31. In the rotary movement of movable contact assembly 3, the 2nd returning spring is subject to torsional stress and stores elastic energy.
When completing towards the rotary motion of the 4th position, according to each link position contact blade 31A, 31B being connected at the first surperficial 3121 places of insulated leg with corresponding insulated leg, the movable contact of movable contact assembly 3 is in and connects or disconnect position.
If movable contact is open in usual, then now it is in and the link position of corresponding fixed contact 21, and signalling current transmits between fixed contact 21.
The telltale being operably connected with described fixed contact detects the flowing of described signalling current, and can thus send the signal of master switch facility towards the 2nd switch state transfer mentioned.
If movable contact is normally closed formula, then the position that it is in now with corresponding fixed contact 21 disconnects, and the signalling current flowed by electrical contact 21 before stops flowing.
The telltale being operationally connected with described fixed contact detects the interruption of described signalling current, and can thus send the signal of master switch facility towards the 2nd switch state transfer mentioned.
When master switch facility is returned to the first switch state, if linear actuators is arranged to then be moved by reverse linear be delivered to axle 4 with opposite way initiatively actuator shaft 4.
In this case, shaft portion 41,42 and movable contact assembly 3 only carry out reversing motion relative to those motions above-mentioned.
Shaft portion 41,42 is returned to first location along linear travel direction 100, and shaft portion 42 and movable contact assembly 3 rotate towards the 3rd position.
Returning spring 51,52 discharges its elasticity energy stored, and promotes axle 41,42 and the movement of movable contact assembly 3.
If linear actuators is arranged is used for simply release shaft 4, then only it is provided for oppositely moving the energy of described shaft portion 41,42 and movable contact assembly 3 by described returning spring 51,52.
Returning spring 52 discharges its elastic energy, and promotes movable contact assembly 3 to rotate towards the 3rd position.
This rotary motion is delivered to the 2nd shaft portion 42, and described 2nd shaft portion 42 also rotates freely towards the 3rd position.
Due to being threaded of the 2nd shaft portion 42 and base 23, therefore the rotation forces shaft portion 41,42 of shaft portion 42 linearly moves towards first location together.
Should promoting towards the translation of first location by the effect of the first returning spring 51, described first returning spring 51 discharges its elasticity energy when linear actuators release shaft 4, and promotes shaft portion 41,42 towards first location.
In described two kinds of situations above, when completing towards the rotary motion of the 3rd position, shaft portion 41,42 arrives first location, and completes the reverse translation that it translates along linear travel direction 100.
As for the movable contact of movable contact assembly 3, contact blade 31A, 31B are in and the position that the fixed contact 21 tackled mutually is connected or disconnects with the link position of corresponding insulated leg 31 by it according to described.
If thus movable contact is open in usual, then it is in now and disconnects position, and telltale detects the interruption of the signalling current flowing through fixed contact 21, can thus send the signal of master switch facility to the first switch replying state.
If movable contact is normally closed formula, then it is in link position now, and telltale detects that signalling current flows through fixed contact 21, thus can send the signal of master switch facility to the first switch replying state mentioned.
The auxiliary contact device 1 of the present invention has several advantages relative to the device of similar known type.
Above-mentioned movement transferring between axle 4 and movable contact assembly 3 ensure that the movable contact at movable contact assembly 3 is in and the obvious minimizing of jitter phenomenon during fixed contact 21 link position tackled mutually.
On-the-spot test also shows, described movement transferring also improves the disconnection capacity of the auxiliary contact device according to the present invention relative to known auxiliary contact device.
In fact, the rotary motion of movable contact subgroup part allow to increase movable contact be in relative to corresponding fixed contact disconnect position time electrical contact between distance.
Such as what can recognize from the accompanying drawing quoted, auxiliary contact device 1 has relatively simple structure, and it is modularization substantially, and can easily to have competitive cost manufacture.
Auxiliary contact device 1 is characterised in that in use significant handiness.
This makes auxiliary contact device 1 be arranged on easily in the medium voltage panel being associated with isolating switch, contactor, isolator and similar switching device.
Claims (13)
1. the auxiliary contact device (1) for medium voltage switchgear equipment, it is characterised in that comprising:
Fixed contact subgroup part (2), it comprises at least one pair of fixed contact (21);
Movable contact subgroup part (3), it comprises at least one movable contact (31A, 31B) being rotatably connected with described fixed contact;
Operating axis (4), it comprises the first shaft portion (41) being operationally connected with linear actuators, the 2nd shaft portion (42) being operationally connected with described movable contact subgroup part, described first and second shaft portions (41,42) it is connected to each other, and both linearly move together between the first position and the second position, described first and second shaft portions coaxially are arranged or along parallel longitudinal axis arranged, described 2nd shaft portion (42) rotates freely between the third and fourth position relative to described first shaft portion (41).
2. auxiliary contact device according to claim 1, it is characterized in that, described fixed contact subgroup part (2) comprises base (23), described 2nd shaft portion (42) is connected with described base, to realize the rotation of described 2nd shaft portion between described third and fourth position.
3. auxiliary contact device according to claim 2, it is characterised in that, described 2nd shaft portion (42) is threaded connection device (424,231) with described base (23) and is connected.
4. auxiliary contact device according to claim 1, it is characterized in that, described first shaft portion (41) comprises first end (411), and described first end is configured as the maintenance surface (413) limiting and mating with the connecting surface (423) of the 3rd end (421) of described 2nd shaft portion (42).
5. auxiliary contact device according to claim 1, it is characterized in that, conductive contact sheet (the 31A that described movable contact subgroup part (3) comprises insulated leg (31) and is rigidly connected with described insulated leg, 31B), described insulated leg is operatively connected with described 2nd shaft portion (42).
6. auxiliary contact device according to claim 5, it is characterised in that, described movable contact subgroup part (3) comprises and pair of conductive contact blade (31A, 31B) that described insulated leg (31) is rigidly connected.
7. auxiliary contact device according to claim 5, it is characterized in that, described 2nd shaft portion (42) comprises the 4th end (422) in the chamber (311) of the described insulated leg of insertion (31), described 4th end vacant land in described chamber linearly moves, and is configured as and the rotary motion between described third and fourth position is transmitted between described 4th end (422) and described insulated leg (31).
8. auxiliary contact device according to claim 7, it is characterized in that, the 4th end (422) of the 2nd shaft portion (42) of described operating axis (4) has the head (422A) of the shaping that the respective inner surfaces (311A) with described chamber (311) is mated.
9. auxiliary contact device according to claim 5, it is characterized in that, described insulated leg (31) has central body (312), first surface (3121) of described central body (312) has the first joint device (3122), and the first joint device engages device (3123) with the 2nd on the 2nd surface (3124) being arranged on described central body and mates mutually.
10. auxiliary contact device according to claim 9, it is characterized in that, described first joint device (3122) is the protuberance on described first surface (3121), the seat that with described protuberance mate of described 2nd joint device (3123) for being positioned on described 2nd surface (3124).
11. auxiliary contact devices according to claim 5, it is characterized in that, described movable contact subgroup part (3) comprises multiple insulated leg (31) and corresponding conductive contact sheet (31A, 31B), described insulated leg and described conductive contact sheet are stacked on top of each other along the axis of the linear travel direction (100) being parallel to described first and second shaft portions (41,42).
12. auxiliary contact devices according to claim 1, it is characterized in that, described fixed contact subgroup part (2) comprises multipair fixed contact (21), and described movable contact subgroup part (3) comprises the described multiple corresponding movable contact (31A, 31B) being rotatably connected to described fixed contact.
13. auxiliary contact devices according to claim 11, it is characterized in that, described movable contact subgroup part (3) comprises and one or more pair of conductive contact blade (31A, 31B) being rigidly connected in described insulated leg (31).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11183877.7 | 2011-10-04 | ||
| EP20110183877 EP2579290B1 (en) | 2011-10-04 | 2011-10-04 | An auxiliary contact device for mv switching apparatuses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103035428A CN103035428A (en) | 2013-04-10 |
| CN103035428B true CN103035428B (en) | 2016-06-08 |
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| CN201210366413.2A Active CN103035428B (en) | 2011-10-04 | 2012-09-28 | For the auxiliary contact device of medium voltage switchgear equipment |
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| EP (1) | EP2579290B1 (en) |
| CN (1) | CN103035428B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2905853B8 (en) * | 2014-02-06 | 2016-12-21 | ABB Schweiz AG | A switchgear apparatus of the withdrawable type |
| CN109490762B (en) * | 2017-09-12 | 2024-05-14 | 浙江正泰电器股份有限公司 | Method and device for detecting mirror contact of contactor |
| EP3745441B1 (en) * | 2019-05-29 | 2023-07-05 | ABB S.p.A. | Low voltage contact assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2028674A2 (en) * | 2007-08-20 | 2009-02-25 | LS Industrial Systems Co., Ltd | Apparatus for auxiliary contact of circuit breaker |
| CN102129942A (en) * | 2010-01-20 | 2011-07-20 | Ls产电株式会社 | Movable contactor assembly for a current limiting type molded case circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2667439B1 (en) * | 1990-09-27 | 1992-11-27 | Telemecanique Electrique | SWITCHING APPARATUS FOR SUPPLYING CAPACITIVE LOADS. |
| US6815622B2 (en) * | 2001-03-13 | 2004-11-09 | General Electric Company | Methods and apparatus for automatically transferring electrical power |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2028674A2 (en) * | 2007-08-20 | 2009-02-25 | LS Industrial Systems Co., Ltd | Apparatus for auxiliary contact of circuit breaker |
| CN102129942A (en) * | 2010-01-20 | 2011-07-20 | Ls产电株式会社 | Movable contactor assembly for a current limiting type molded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2579290A1 (en) | 2013-04-10 |
| EP2579290B1 (en) | 2014-06-04 |
| CN103035428A (en) | 2013-04-10 |
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