CN206059220U - A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch - Google Patents
A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch Download PDFInfo
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- CN206059220U CN206059220U CN201620878491.4U CN201620878491U CN206059220U CN 206059220 U CN206059220 U CN 206059220U CN 201620878491 U CN201620878491 U CN 201620878491U CN 206059220 U CN206059220 U CN 206059220U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 230000003068 static effect Effects 0.000 claims description 51
- 230000005611 electricity Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract description 5
- 230000003245 working effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch，Including mounting box，The conventional power contact head component being oppositely arranged in mounting box and stand-by power supply contact assembly and the arc-extinguish chamber between them，As conventional power contact head component and stand-by power supply contact assembly are provided with arcing contact component and working contact component，And they are arranged in different working faces，So that respectively with an arc-chutes in Z-shaped arc-extinguish chamber when conventional power supply and stand-by power supply conversion disjunction，In limited volume, arc-chutes can be made to obtain longer arc extinguishing distance，Thus more preferable arc quenching effect can be obtained，Simultaneously because the setting of arcing contact component and working contact component，Dual power supply working contact component elder generation separating brake when separating brake is changed，Separating brake after arcing contact component，During disjunction, produced arc extinguishing is mainly undertaken by arcing contact component，Double power supply automatic transfer switch is so enabled to obtain more preferable working effect.
Description
Technical field
This utility model is related to a kind of low-voltage electrical apparatus, relates in particular to a kind of touching for PC levels double power supply automatic transfer switch
Head arc-extinguishing mechanism.
Background technology
Double power supply automatic transfer switch is a kind of conventional low-voltage electrical apparatus, the conversion being usually used between two road power supplys, it is ensured that
When power failure all the way or when stopping power supply, another road power supply can be switched over rapidly, to guarantee the normal of load circuit
Power supply.The shift actuating member of PC level double power supply automatic transfer switch is generally permutator, in the dynamic and static contact of permutator
Between be provided with arc-extinguish chamber, to load current of the disjunction dual power supply in transformation process or the electric arc produced by fault current,
The setting of this arc-extinguish chamber generally has two kinds of methods, a kind of action of the action contact and stand-by power supply for being the conventional power supply of dual power supply
Contact is oppositely arranged in the mounting box of double power supply automatic transfer switch, and another kind is the action contact and standby electricity of conventional power supply
The action contact in source is oppositely arranged in the mounting box of double power supply automatic transfer switch, and such as Korea flies generation dragon 201110204355.9
Shown in patent, thus can be shared in the conventional setting one between power contact head component and stand-by power supply contact assembly of dual power supply
Arc-extinguish chamber, one dividing plate is set at the middle part of arc-extinguish chamber and separates to form two arc-chutes in left and right for conventional electricity by arc-extinguish chamber
The arc extinguishing of source and stand-by power supply is used, but arc extinguishing distance that is such and causing arc-chutes is too short, and arc quenching effect is poor, in order to improve
The arc quenching effect of this structure, designer are designed a lot of ways, and one is the double contacts for being set to side by side apart by moving contact, while
Arc quenching plate is improved, so, arc quenching effect has improvement, but still undesirable.
The content of the invention
The purpose of this utility model is to overcome in prior art arc-chutes in double power supply automatic transfer switch arc-extinguishing mechanism
The drawbacks of arc extinguishing distance is too short, discloses a kind of novel simple, the arc quenching effect preferably PC levels double power supply automatic transfer switch of structure
Contact arc-extinguishing mechanism.
A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch, including mounting box, be arranged on it is in mounting box,
The conventional power contact head component of structure identical and stand-by power supply contact assembly, described mounting box can be arranged as required to 2～4
It is individual, to meet the needs of 2～4 pole double power supply automatic transfer switch；
Especially, arc-extinguish chamber is provided between the conventional power contact head component and stand-by power supply contact assembly；
Especially, described arc-extinguish chamber is Z-shaped, is provided with skew wall arc-extinguish chamber is upper and lower every being divided in the middle part of arc-extinguish chamber
Two arc-chutes, commonly use power supply arcing contact component using conventional power supply arc-chutes, and stand-by power supply contact arc-extinguishing component is using standby
Use power supply arc-chutes.
Especially, the length of the arc-chutes be it is conventional between power contact head component and stand-by power supply contact assembly away from
From；
Especially, described conventional power contact head component is provided with conventional power supply arcing contact component and conventional power work
Contact assembly, stand-by power supply contact assembly are provided with stand-by power supply arcing contact component and stand-by power supply working contact component；
Especially, the conventional power supply arcing contact component, conventional power work contact assembly and stand-by power supply arc extinguishing are touched
Head assembly, stand-by power supply working contact component are oppositely arranged in the mounting box, and conventional power supply arcing contact component, standby
Power supply arcing contact component is arranged in different working faces, commonly uses power work contact assembly, stand-by power supply working contact
Component is also disposed in different working faces.
Especially, described conventional power supply arcing contact component includes that conventional power supply arc extinguishing moving contact and bottom are corresponding often
With power supply arc extinguishing static contact, described conventional power work contact assembly includes commonly using power work moving contact and bottom is corresponding
Conventional power work static contact, described conventional power supply arc extinguishing moving contact and conventional power work moving contact can hold according to power supply
Amount needs to be arranged side by side one or several, be connected with conventional power supply moving contact binding post by being flexible coupling, described conventional electricity
What source arc extinguishing moving contact was arranged on the conventional power supply arc-chutes of the arc-extinguish chamber enters nock end, described conventional power work moving contact
Be arranged on stand-by power supply arc-chutes goes out nock end.
Especially, described stand-by power supply arcing contact component includes that stand-by power supply arc extinguishing moving contact and bottom are corresponding standby
With power supply arc extinguishing static contact, described stand-by power supply working contact component includes that stand-by power supply work moving contact and bottom are corresponding
Stand-by power supply work static contact, described stand-by power supply arc extinguishing moving contact and stand-by power supply work moving contact can hold according to power supply
Amount need be arranged side by side one or several, be connected with stand-by power supply moving contact binding post by being flexible coupling, described is standby
What power supply arc extinguishing moving contact was arranged on the arc-extinguish chamber stand-by power supply arc-chutes enters nock end, and described stand-by power supply work is dynamic to touch
What head was arranged on conventional power supply arc-chutes goes out nock end.
Especially, described conventional power supply arc extinguishing static contact and conventional power work static contact are arranged on conventional power supply stationary contact
On head conductive plate, conventional power supply arc extinguishing static contact curves inwardly, and conventional power work static contact is bent outwardly；The stand-by power supply
Arc extinguishing static contact and stand-by power supply work static contact are arranged on stand-by power supply static contact conductive plate, stand-by power supply arc extinguishing static contact
Curve inwardly, stand-by power supply work static contact is bent outwardly, the conventional power supply static contact conductive plate and stand-by power supply static contact
Conductive plate is oppositely arranged on the static contact terminal board of double power supply automatic transfer switch.
Especially, described conventional power supply arc extinguishing moving contact and conventional power work moving contact are arranged side by side, by a crank
Linkage controls break-make, and the length of the more common power work moving contact of length of the conventional power supply arc extinguishing moving contact will be grown,
Double power supply automatic transfer switch closes a floodgate in conversion and is first closed a floodgate with power work moving contact often, closes after commonly using power supply arc extinguishing moving contact
Lock, and power supply arc extinguishing moving contact after separating brake is commonly used often with power work moving contact elder generation separating brake in separating brake.
Especially, described stand-by power supply arc extinguishing moving contact and stand-by power supply work moving contact are arranged side by side, by a crank
Linkage controls break-make, and the length of the stand-by power supply arc extinguishing moving contact will be grown compared with the work length of moving contact of stand-by power supply,
Double power supply automatic transfer switch stand-by power supply work moving contact when conversion is closed a floodgate first closes a floodgate, and closes after stand-by power supply arc extinguishing moving contact
Lock, and in separating brake stand-by power supply work moving contact elder generation separating brake, separating brake after stand-by power supply arc extinguishing moving contact.
The contact arc-extinguishing mechanism of the PC level double power supply automatic transfer switch of above structure is had an advantageous effect in that：Due to
The conventional power contact head arc extinguishing component of double power supply automatic transfer switch, contact work package and stand-by power supply contact arc-extinguishing component,
Contact work package is arranged in different working faces, so can be in conventional power contact head component and stand-by power supply sets of contacts
One shared Z-shaped arc-extinguish chamber is set between part, and it can accomplish that the conventional power contact head in double power supply automatic transfer switch goes out
Arc component and stand-by power supply contact arc-extinguishing component in disjunction load or fault current respectively with an arc-chutes, due to the arc extinguishing
The length of room is conventional the distance between power contact head component and stand-by power supply contact assembly, and prior art dual power supply arc-extinguish chamber
A flash barrier is provided between this distance, thus compared with the contraction in length half of this utility model arc-chutes, this practicality is new
Type can make arc-chutes obtain longer arc extinguishing distance and longer quenching time in limited volume, thus can obtain preferably
Arc quenching effect, simultaneously because conventional power contact head component of the present utility model and stand-by power supply contact assembly are provided with arcing contact
Component and working contact component, and the arc extinguishing moving contact length of arcing contact component is long compared with the work moving contact of working contact component
Spend and will grow, double power supply automatic transfer switch work moving contact when conversion is closed a floodgate first closes a floodgate, and closes a floodgate, and dividing after arc extinguishing moving contact
Work during lock moving contact elder generation separating brake, separating brake after arc extinguishing moving contact, and during disjunction, produced arc extinguishing is mainly held by arcing contact component
Load, and enter nock end due to what arc extinguishing moving contact was arranged on arc-extinguish chamber, it is more beneficial for electric arc and enters arc-chutes, such structure
So that the work of double power supply automatic transfer switch is more reliable and more stable.
Description of the drawings
Three-dimensional structure diagrams of the Fig. 1 for this utility model contact arc-extinguishing mechanism；
Fig. 2 removes the front view after arc-extinguish chamber for Fig. 1；
Top views of the Fig. 3 for the contact mechanism and arc-extinguish chamber of Fig. 1；
Fig. 4 is the mounting structure figure of the conventional power contact head components of Fig. 1 and stand-by power supply contact assembly；
Fig. 5 is the three-dimensional structure diagram of conventional power contact head component in Fig. 4；
Specific embodiment
With reference to Fig. 1～Fig. 5, by specific embodiment, the utility model is described in further detail.
It should be noted that the term " middle part ", " on ", D score, " inside ", the orientation of the instruction such as " outside " or position
Relation is, based on orientation shown in the drawings or position relationship, to be for only for ease of description this utility model, rather than indicate or dark
Show that the device or element of indication there must be specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
Restriction of the present utility model.Additionally, term " conventional power supply ", " stand-by power supply " are only used for drawing and describe purpose, and it is not understood that
To indicate or implying its specific fixed position in equipment.
A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch, including mounting box 1, are arranged in mounting box 1
, the conventional power contact head component 5 of structure identical and stand-by power supply contact assembly 9, described mounting box 1 can be set as needed
2～4 are put, to meet the needs of 2～4 pole double power supply automatic transfer switch；
Especially, arc-extinguish chamber 15 is provided between the conventional power contact head component 5 and stand-by power supply contact assembly 9；
Especially, described arc-extinguish chamber 15 for Z-shaped, the middle part of arc-extinguish chamber 15 be provided with skew wall 1501 by arc-extinguish chamber 15 every
It is divided into arc-chutes 1502 and lower two arc-chutes 1503, commonly uses power supply arcing contact component 502 and use upper arc-chutes 1502, it is standby
Lower arc-chutes 1503, and the length of arc-chutes 1502,1503 are used for conventional power contact head group with power supply arcing contact component 902
The distance between part 5 and stand-by power supply contact assembly 9；
Especially, described conventional power contact head component 5 is provided with conventional power supply arcing contact component and conventional power supply work
Make contact assembly, stand-by power supply contact assembly 9 is provided with stand-by power supply arcing contact component and stand-by power supply working contact component；
Especially, the conventional power supply arcing contact component, conventional power work contact assembly and stand-by power supply arc extinguishing are touched
Head assembly, stand-by power supply working contact component are oppositely arranged in the mounting box 1, and conventional power supply arcing contact component, standby
It is arranged in different working faces with power supply arcing contact component, commonly uses power work contact assembly, stand-by power supply work and touch
Head assembly is also disposed in different working faces.
Especially, described conventional power supply arcing contact component includes that conventional power supply arc extinguishing moving contact 502 is corresponding with bottom
Conventional power supply arc extinguishing static contact 702, described conventional power work contact assembly includes conventional 501 He of power work moving contact
The corresponding conventional power work static contact 701 in bottom, described conventional power supply arc extinguishing moving contact 502 are set to one, commonly use electricity
Source work moving contact 501 has been arranged side by side two, and they 4 are connected with conventional power supply moving contact binding post 2 by being flexible coupling, institute
What the conventional power supply arc extinguishing moving contact 502 stated was arranged on that the arc-extinguish chamber 15 commonly uses power supply arc-chutes 1502 enters nock end, described
Conventional power work moving contact be arranged on stand-by power supply arc-chutes 1503 go out nock end.
Especially, described stand-by power supply arcing contact component includes that stand-by power supply arc extinguishing moving contact 902 is corresponding with bottom
Stand-by power supply arc extinguishing static contact 802, described stand-by power supply working contact component include stand-by power supply work 901 He of moving contact
The corresponding stand-by power supply work static contact 801 in bottom, described stand-by power supply arc extinguishing moving contact 902 are set to one, standby electricity
Source work moving contact 901 is arranged side by side as two, and they 11 are connected with stand-by power supply moving contact binding post 12 by being flexible coupling,
What described stand-by power supply arc extinguishing moving contact 902 was arranged on 15 stand-by power supply arc-chutes 1503 of the arc-extinguish chamber enters nock end, institute
What the stand-by power supply work moving contact stated was arranged on conventional power supply arc-chutes 1502 goes out nock end.
Especially, described conventional power supply arc extinguishing static contact 702 and conventional power work static contact 701 are arranged on conventional electricity
On source static contact conductive plate 7, conventional power supply arc extinguishing static contact 702 curves inwardly, and commonly uses 701 bent outward of power work static contact
It is bent；The stand-by power supply arc extinguishing static contact 802 and stand-by power supply work static contact 801 are arranged on stand-by power supply static contact conductive plate
On 8, stand-by power supply arc extinguishing static contact 802 curves inwardly, and stand-by power supply work static contact 801 is bent outwardly, the conventional power supply
Static contact conductive plate 7 and the oppositely arranged static contact wiring in double power supply automatic transfer switch of stand-by power supply static contact conductive plate 8
On terminal board 3.
Especially, described conventional power supply arc extinguishing moving contact 502 and conventional power work moving contact 501 are arranged side by side, by
Toggle 6 controls break-make, and conventional power supply moving contact rotating shaft 14 is provided with the crank of the toggle 6, leads to
The actuating mechanism for crossing double power supply automatic transfer switch drives moving contact rotating shaft 14 to rotate from left and right different directions to control conventional electricity
Combined floodgate, the separating brake of source arc extinguishing moving contact 502 and conventional power work moving contact 501, the conventional power supply arc extinguishing moving contact 502
The length of the more common power work moving contact of length 501 will be grown, and double power supply automatic transfer switch closes a floodgate in conversion and uses often power supply
Work moving contact 501 first closes a floodgate, and closes a floodgate, and use often power work moving contact in separating brake after commonly using power supply arc extinguishing moving contact 502
501 first separating brakes, commonly use separating brake after power supply arc extinguishing moving contact 502.
Especially, described stand-by power supply arc extinguishing moving contact 902 and stand-by power supply work moving contact 901 are arranged side by side, by
Toggle 10 controls break-make, and stand-by power supply moving contact rotating shaft 13 is provided with the crank of the toggle 10,
Moving contact rotating shaft 13 is driven to rotate standby to control from left and right different directions by the actuating mechanism of double power supply automatic transfer switch
The combined floodgate of power supply arc extinguishing moving contact 902 and stand-by power supply work moving contact 901, separating brake, the stand-by power supply arc extinguishing moving contact 902
Length compared with stand-by power supply work moving contact 901 length to grow, double power supply automatic transfer switch conversion close a floodgate when standby electricity
Source work moving contact 901 first closes a floodgate, and closes a floodgate, and stand-by power supply work is dynamic tactile in separating brake after stand-by power supply arc extinguishing moving contact 902
901 first separating brakes, separating brake after stand-by power supply arc extinguishing moving contact 902.
It should be noted that：Above-described embodiment is only intended to clearly illustrate this utility model example, and not
Restriction to embodiment, for those of ordinary skill in the field, can also be made on the basis of the above description
Thus the change or variation of other multi-forms, there is no need to be exhaustive to all of embodiment, and extended
Among the obvious change for going out or variation are still in protection domain of the present utility model.
Claims (8)
1. a kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch, including mounting box, is arranged in mounting box, knot
Structure identical is commonly used power contact head component and stand-by power supply contact assembly and is arranged on conventional power contact head component and standby electricity
Arc-extinguish chamber between the contact assembly of source；
It is characterized in that：Described conventional power contact head component is provided with conventional power supply arcing contact component and conventional power work
Contact assembly, stand-by power supply contact assembly are provided with stand-by power supply arcing contact component and stand-by power supply working contact component；
Described conventional power contact head component and stand-by power supply contact assembly are oppositely arranged in the mounting box, and conventional power supply
Arcing contact component, stand-by power supply arcing contact component are arranged in different working faces, conventional power work contact assembly,
Stand-by power supply working contact component is also disposed in different working faces；
Described arc-extinguish chamber is provided with skew wall by arc-extinguish chamber every being divided into upper and lower two arc-chutes in the middle part of arc-extinguish chamber for Z-shaped,
Conventional power supply arcing contact component uses stand-by power supply arc extinguishing using conventional power supply arc-chutes, stand-by power supply contact arc-extinguishing component
Room.
2. contact arc-extinguishing mechanism according to claim 1, it is characterised in that：Described conventional power supply arcing contact component bag
Include the corresponding conventional power supply arc extinguishing static contact of conventional power supply arc extinguishing moving contact and bottom, described conventional power work contact assembly
Including the corresponding conventional power work static contact of conventional power work moving contact and bottom, described conventional power supply arc extinguishing moving contact
Be connected with conventional power supply moving contact binding post by being flexible coupling with conventional power work moving contact, described conventional power supply arc extinguishing
What moving contact was arranged on the conventional power supply arc-chutes of the arc-extinguish chamber enters nock end, and described conventional power work moving contact is arranged on
Stand-by power supply arc-chutes go out nock end.
3. contact arc-extinguishing mechanism according to claim 1, it is characterised in that：Described stand-by power supply arcing contact component bag
Include the corresponding stand-by power supply arc extinguishing static contact of stand-by power supply arc extinguishing moving contact and bottom, described stand-by power supply working contact component
Including the corresponding stand-by power supply work static contact of stand-by power supply work moving contact and bottom, described stand-by power supply arc extinguishing moving contact
Be connected with stand-by power supply moving contact binding post by being flexible coupling with stand-by power supply work moving contact, described stand-by power supply arc extinguishing
What moving contact was arranged on the arc-extinguish chamber stand-by power supply arc-chutes enters nock end, and described stand-by power supply work moving contact is arranged on
Conventional power supply arc-chutes go out nock end.
4. contact arc-extinguishing mechanism according to claim 2, it is characterised in that：Described conventional power supply arc extinguishing static contact and often
It is arranged on conventional power supply static contact conductive plate with power work static contact, the conventional power supply arc extinguishing static contact curves inwardly,
Conventional power work static contact is bent outwardly.
5. contact arc-extinguishing mechanism according to claim 3, it is characterised in that：Described stand-by power supply arc extinguishing static contact and standby
It is arranged on stand-by power supply static contact conductive plate with power work static contact, the stand-by power supply arc extinguishing static contact curves inwardly,
Stand-by power supply work static contact is bent outwardly.
6. the contact arc-extinguishing mechanism according to claim 4 or 5, it is characterised in that：Described conventional power supply static contact is conductive
Plate and stand-by power supply static contact conductive plate are oppositely arranged on the static contact terminal board of double power supply automatic transfer switch.
7. contact arc-extinguishing mechanism according to claim 2, it is characterised in that：Described conventional power supply arc extinguishing moving contact and often
It is arranged side by side with power work moving contact, break-make, the length of the conventional power supply arc extinguishing moving contact is controlled by a toggle
The length for spending more common power work moving contact will be grown.
8. contact arc-extinguishing mechanism according to claim 3, it is characterised in that：Described stand-by power supply arc extinguishing moving contact and standby
It is arranged side by side with power work moving contact, break-make, the length of the stand-by power supply arc extinguishing moving contact is controlled by a toggle
Degree will be grown compared with the length of stand-by power supply work moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878491.4U CN206059220U (en) | 2016-08-12 | 2016-08-12 | A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878491.4U CN206059220U (en) | 2016-08-12 | 2016-08-12 | A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch |
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| CN206059220U true CN206059220U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620878491.4U Active CN206059220U (en) | 2016-08-12 | 2016-08-12 | A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133868A (en) * | 2017-12-29 | 2018-06-08 | 武汉长海电气科技开发有限公司 | A kind of D.C. contactor contact system |
| CN108878186A (en) * | 2018-08-27 | 2018-11-23 | 北京明日电器设备有限责任公司 | A kind of large opening double power supply automatic transfer switch |
| CN110223867A (en) * | 2019-07-01 | 2019-09-10 | 乐清东海电器有限公司 | A kind of moving contact interlocking mechanism of automatic change-over terminals |
| CN113096988A (en) * | 2021-03-30 | 2021-07-09 | 苏州飞腾电器有限公司 | Automatic change-over switch capable of rapidly switching off arc extinction |
-
2016
- 2016-08-12 CN CN201620878491.4U patent/CN206059220U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133868A (en) * | 2017-12-29 | 2018-06-08 | 武汉长海电气科技开发有限公司 | A kind of D.C. contactor contact system |
| CN108133868B (en) * | 2017-12-29 | 2024-04-30 | 武汉长海电气科技开发有限公司 | Direct current contactor contact system |
| CN108878186A (en) * | 2018-08-27 | 2018-11-23 | 北京明日电器设备有限责任公司 | A kind of large opening double power supply automatic transfer switch |
| CN110223867A (en) * | 2019-07-01 | 2019-09-10 | 乐清东海电器有限公司 | A kind of moving contact interlocking mechanism of automatic change-over terminals |
| CN110223867B (en) * | 2019-07-01 | 2024-02-20 | 乐清东海电器有限公司 | Moving contact interlocking mechanism of automatic transfer switch wiring terminal |
| CN113096988A (en) * | 2021-03-30 | 2021-07-09 | 苏州飞腾电器有限公司 | Automatic change-over switch capable of rapidly switching off arc extinction |
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