CN206059218U - Mechanical interlocks and dual-power transfer switch - Google Patents
Mechanical interlocks and dual-power transfer switch Download PDFInfo
- Publication number
- CN206059218U CN206059218U CN201621102423.5U CN201621102423U CN206059218U CN 206059218 U CN206059218 U CN 206059218U CN 201621102423 U CN201621102423 U CN 201621102423U CN 206059218 U CN206059218 U CN 206059218U
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- Prior art keywords
- switch
- way
- blocking lever
- dual
- power transfer
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Abstract
Mechanical interlocks and dual-power transfer switch.Mechanical interlocks includes：First blocking lever, is coupled with the crank of the main shaft of the on and off switch all the way of dual-power transfer switch；With the second blocking lever of the first blocking lever pivot joint, which is also pivoted to the pedestal of dual-power transfer switch, and is configured to the motion of the first blocking lever and rotates along the second direction contrary with first direction；The release lever of wherein another road on and off switch of dual-power transfer switch is configured in the rotating path of the second blocking lever and is configured in the rotating path of the second blocking lever be abutted to keep the trip status of another road on and off switch by the second blocking lever.The method of mechanical interlocks, dual-power transfer switch and operation dual-power transfer switch in accordance with an embodiment of the present disclosure, using the teaching of the invention it is possible to provide safe and reliable interlocking, prevents the security incident such as short circuit between power supply.
Description
Technical field
Embodiment of the present disclosure is related to dual-power transfer switch field, opens for dual power supply conversion more particularly to a kind of
The mechanical interlocks of pass and a kind of dual-power transfer switch.
Background technology
Dual-power transfer switch is to answer the successional requirement of supply of electric power and be born.As people are to for electrically continuous
Property, safety, the requirement of reliability deepen continuously, and the application of dual-power transfer switch is more and more extensive.Such as hotel, theater are this kind of
The important public place that personnel concentrate, as interruption of power supply will cause disorder, or even the life security for jeopardizing guest.It is related
Industry standard specifies that its distribution system must possess emergency power supply and power.For the type of non-conversion free of discontinuities, in power supply all the way
During connection, another road power supply to be avoided from being disconnected to connection；In the centre position that double switch is all opened, to also avoid because grasping by mistake
Work causes while the situation for being also turned on two-way power supply of closing a floodgate；The short circuit generation between power supply can be so avoided, prevents great
The generation of security incident.The mechanical interlocking of prior art mainly switchs separating brake release lever by conventional/emergency power supply and meets an urgent need/commonly use
The interlocking of on and off switch main spindle's is realizing.This structure is more complicated, and often can cause two-way electricity because of maloperation
The situation that source is closed a floodgate simultaneously, brings severe compromise.Therefore, it is intended that being improved to improve to the mechanical interlocking of prior art
The reliability of mechanical interlocking and safety.
The content of the invention
In view of this, one of purpose of disclosure embodiment is to provide a kind of machinery for dual-power transfer switch
Interlock and a kind of dual-power transfer switch, which at least can solve the problem that one or more skills present in above-mentioned prior art
Art problem.
According to the first aspect of the disclosure, there is provided a kind of mechanical interlocks, for dual-power transfer switch, it is configured to prevent
Only dual-power transfer switch is closed a floodgate simultaneously, including：First blocking lever, its master with the on and off switch all the way of dual-power transfer switch
The crank coupling of axle, and be configured to the combined floodgate of on and off switch all the way and move, wherein when on and off switch closes a floodgate all the way,
The main shaft of on and off switch is rotated in a first direction all the way；With the second blocking lever of the first blocking lever pivot joint, which is also pivoted to double electricity
The pedestal of source changeover switch, and it is configured to the motion of the first blocking lever and along the second party contrary with first direction
To rotation；The release lever of wherein another road on and off switch of dual-power transfer switch is configured in the rotating path of the second blocking lever
Go up and be configured in the rotating path of the second blocking lever to be abutted to keep the de- of another road on and off switch by the second blocking lever
Buckle-like state.
According to one embodiment of the disclosure, the first blocking lever is provided with chute so that the first blocking lever and power supply all the way
The main shaft of switch is relative to each other slidably coupled.
According to one embodiment of the disclosure, it is provided between the crank of the main shaft of on and off switch and the first blocking lever all the way
Force application part, force application part are configured to the combined floodgate of on and off switch all the way and the first blocking lever are exerted a force, to accelerate second
The motion of blocking lever.
According to one embodiment of the disclosure, the main shaft of on and off switch is provided with damped part all the way, for weakening all the way
Kinergety of the main shaft of on and off switch during closing a floodgate.
According to one embodiment of the disclosure, damped part is spring, and one end of spring is arranged on and off switch all the way
On main shaft, the other end is arranged on the housing of dual-power transfer switch, and is configured at least transport in the combined floodgate of on and off switch all the way
The dynamic initial stage applies resistance to the main shaft of on and off switch all the way.
According to one embodiment of the disclosure, mechanical interlocks also includes linking with the feed motion of on and off switch all the way
Barrier assembly, barrier assembly is configured to：When another road on and off switch normally closes a floodgate, barrier assembly is located at another road power supply
Outside the combined floodgate path of switch, and when on and off switch all the way and another road on and off switch are closed a floodgate simultaneously, barrier assembly is extremely
During the feed motion of a few part and on and off switch all the way moves to the combined floodgate path of another road on and off switch in linkage and
Stop the feed motion of another road on and off switch.
According to one embodiment of the disclosure, barrier assembly includes stopping connecting rod, stops that one end of connecting rod is switched to double electricity
The housing of source changeover switch, stops that the other end of connecting rod is relative to each other slidably coupled with the second blocking lever, stops connecting rod quilt
It is configured in the making process of on and off switch all the way rotate to abut another road on and off switch under the drive of the second blocking lever
Main shaft crank.
According to one embodiment of the disclosure, stop that connecting rod is included from stop main shaft of the connecting rod towards another road on and off switch
Prominent protuberance.
According to the second aspect of the disclosure, there is provided a kind of dual-power transfer switch, including：On and off switch all the way；Another road
On and off switch；According to mechanical interlocks above, mechanical interlocks is symmetrically arranged in dual-power transfer switch two
Side.
Mechanical interlocks in accordance with an embodiment of the present disclosure and dual-power transfer switch, using the teaching of the invention it is possible to provide safe and reliable connection
Lock, prevents the security incident such as short circuit between power supply.
Description of the drawings
Now will be described with reference to appended accompanying drawing embodiment of this disclosure only by way of example, wherein：
Fig. 1 is that the vertical view of the major part of the dual-power transfer switch for illustrating the one embodiment according to the disclosure is illustrated
Figure；
Fig. 2 is the view observed from the right side of Fig. 1, mainly schematically shows the machinery of the one embodiment according to the disclosure
The structure chart of interlock, wherein two-way on and off switch are all the state opened；
Fig. 3 is similar with Fig. 2, illustrates the structure chart of the mechanical interlocks of one embodiment according to the disclosure, wherein left
Side on and off switch closes a floodgate, and east power switch is opened；
Fig. 4 illustrates the structural representation of the mechanical interlocks according to another embodiment of the disclosure, wherein two-way electricity
Source switch is all the state opened；And
Fig. 5 is similar with Fig. 2, illustrates the structural representation of the mechanical interlocks according to another embodiment of the disclosure,
Two-way on and off switch be there is shown with while the state closed a floodgate.
Specific embodiment
Now combine accompanying drawing embodiment of this disclosure to be specifically described.It should be noted that to similar in accompanying drawing
Part or functional unit may use same numeral sign.Appended accompanying drawing is intended only to illustrate embodiment of the disclosure.
Those skilled in the art can obtain what is substituted on the basis of without departing from disclosure spirit and scope from the description below
Embodiment.
Below in conjunction with the accompanying drawings illustrating mechanical interlocks in accordance with an embodiment of the present disclosure and dual-power transfer switch.Should
It should be appreciated that, the structure of mechanical interlocks and dual-power transfer switch in figure is only schematic, mechanical interlocking dress
Put and be embodied as taking various forms with dual-power transfer switch.
As shown in figure 1, dual-power transfer switch includes：On and off switch 1, another road on and off switch 2 and centrosymmetry all the way
Be arranged in two mechanical interlocks 10 of dual-power transfer switch both sides.Fig. 2 shows the machine according to the embodiment of the present disclosure
The CONSTRUCTED SPECIFICATION of tool interlock 10.
As shown in Fig. 2 mechanical interlocks 10 includes：First blocking lever 30, its electricity all the way with dual-power transfer switch
The crank coupling of the main shaft 12 of source switch 1, and be configured to the combined floodgate of on and off switch 1 all the way and move, wherein all the way
When on and off switch 1 closes a floodgate, the main shaft 12 of on and off switch 1 is rotated in a first direction all the way；With the second of 30 pivot joint of the first blocking lever
Blocking lever 40, which is also pivoted to the pedestal of dual-power transfer switch, and be configured to the first blocking lever 30 motion and
Rotate along the second direction contrary with first direction；The wherein release lever of another road on and off switch 2 of dual-power transfer switch
24 are configured in the rotating path of the second blocking lever 40 and are configured in the rotating path of the second blocking lever 40 by second
Blocking lever 40 abuts to keep the trip status of another road on and off switch 2.
Using the centrosymmetry (or diagonal is symmetrical) according to the embodiment of the present disclosure installed in permutator both sides machine
Tool interlock, wherein the main shaft of on and off switch is linked with mechanical interlocks as driving lever all the way, mechanical interlocking dress
The mechanical unlocking bar that another road on and off switch is acted on as slave unit is put, to maintain the trip status of another road opening, by
This can reliably be avoided two-way power supply while closing a floodgate, even if two-way power supply is can also ensure that in the case of maloperation ground while closing
Lock.
Illustrate according to the embodiment of the present disclosure with reference to the course of work of Fig. 2 and Fig. 3 and dual-power transfer switch
Mechanical interlocks prevents the action principle while closing a floodgate.
In the state of dual-power transfer switch normal operating, therefore, to assure that on and off switch is remained closed all the way, no matter use
Any action applied to another road on and off switch for family, is required for guaranteeing that another road on and off switch can not be closed.Change in dual power supply
In the state of not starting operation, i.e., when two-way power supply all initially resides in open position, therefore, to assure that even if user grasps by mistake
Work attempts to close two-way power supply, and two-way power supply can not produce the state of being also turned on.
As shown in Figures 2 and 3, be connected with crank all the way on the main shaft 12 of on and off switch 1, one end of the first blocking lever 30 with
Crank is hinged or constitutes sliding pair, is hinged between the first blocking lever 30 and the second blocking lever 40, and the first blocking lever 30 with base (is
Fixture) between be also hinged.First blocking lever 30 is moved with the rotation of crank, drives the second blocking lever 40 around being articulated with bottom
The axle of seat swings.When on and off switch 1 is closed all the way, its main shaft 12 rotates to certain angle, the first blocking lever of crank handle turns
30 movements so that the second blocking lever 40 swings to the mechanical unlocking bar 24 of another road on and off switch of touching power supply 2, and is maintained at
Trip positions.Now if malfunction is required another road on and off switch closure, as mechanical interlocks is in unbuckled position,
Then order cannot be performed, therefore be avoided that the short circuit of two-way power supply.
According to the mechanical interlocks of the disclosure, even if user attempts to close two-way power supply, two-way power supply can not be produced
It is also turned on state.As shown in Figures 2 and 3, even if user performs feed motion to dual-power transfer switch simultaneously.Due to diagonal
Mechanical interlocks that line is symmetrically installed while effect, so the main shaft of two-way on and off switch is in the rotary course to make position
In, the mechanism of another road power supply can be tripped respectively so that the moving contact 16,26 of two-way on and off switch cannot be with corresponding stationary contact
18,28 contacts, hence in so that double switch cannot close connection.
According to one embodiment of the disclosure, the first blocking lever 30 is provided with chute 32 so that the first blocking lever 30 and
The main shaft 12 of road on and off switch 1 is relative to each other slidably coupled.In this case, master can be mitigated using sliding pair
Axle, the position of crank and the first and second blocking levers, the design difficulty of the stroke of release lever, are effectively prevented from the dry of parts
Relate to.In another embodiment, according to Spindle rotation angle degree, the position of crank length and the first and second blocking levers, release lever
Stroke, it is also possible in the junction of crank and the first blocking lever using being hinged.
According to one embodiment of the disclosure, all the way between the crank of the main shaft 12 of on and off switch 1 and the first blocking lever 30
Force application part 34 is provided with, force application part 34 is configured to the combined floodgate of on and off switch 1 all the way and the first blocking lever 30 is applied
Power, to accelerate the motion of the second blocking lever 40.Using such scheme, the second blocking lever 40 can be triggered on opportunity as early as possible
Action, can be threaded off with promoting release lever 24 to rotate as soon as possible.In the illustrated embodiment, force application part is, for example, spring, spring
One end be arranged on crank, the other end is arranged on the first blocking lever 30.Spring is applied in pre-tensioning, all the way on and off switch
1 it is not closed when, under the action of the spring, the contact of the short length of crank and chute (example is slotted hole in figure).
In one embodiment, pretightning force is preferably more than the tripping force of another road mechanism that threads off, and in this case, more can accelerate
The dropout of another road on and off switch is triggered fastly.
In addition to above-mentioned two situations, also there is another kind of worry.Due to when two-way on and off switch is closed a floodgate, leading to
The moment of torsion for being usually used in drive shaft rotation is very big, therefore when user misoperation is carried out to two-way on and off switch while closing operation
When, under the percussion of the huge energy of high pulling torque, two-way on and off switch yet suffer from instantaneously and meanwhile close a floodgate probability,
Even if instantaneously close a floodgate also bringing huge potential safety hazard.
Pin is in this regard, present inventor is to for driving the force component of switch closing and switch opening to carry out careful simulation analysis, sending out
Now by arranging damped part, to consume combined floodgate energy at the combined floodgate initial stage, most preferably so that the energy of the accumulation of drive shaft
Zero is less than before dynamic/static contact contact, namely is met to separating brake direction and is moved, it is ensured that will not be produced short between two power supplys
Road, protection circuit safety.
According to one embodiment of the disclosure, damped part is spring, and one end of spring is arranged on and off switch all the way
On main shaft, the other end is arranged on the housing of dual-power transfer switch, and is configured at least transport in the combined floodgate of on and off switch all the way
The dynamic initial stage applies resistance to the main shaft of on and off switch all the way.By arranging spring, and spring is configured on and off switch
It is in resistance during making process so that the energy of accumulation is less than zero before dynamic/static contact contact, namely meets to separating brake direction fortune
It is dynamic, it is ensured that the short circuit between two power supplys, protection circuit safety will not be produced.
In order to solve when user misoperation is carried out to two-way on and off switch and meanwhile during closing operation, two-way on and off switch it is instantaneous
The worry that ground closes a floodgate, present inventor also proposed another kind of improvement project.
As shown in Figure 4 and Figure 5, mechanical interlocks 10 also includes the resistance that the feed motion with and off switch 1 all the way links
Gear component 50, barrier assembly 50 are configured to：In 2 normal combined floodgate of another road on and off switch, barrier assembly 50 is located at another road
Outside the combined floodgate path of on and off switch 2, and when on and off switch 1 all the way and another road on and off switch 2 are closed a floodgate simultaneously, stop group
The feed motion of at least one part of part 50 and all the way on and off switch 1 moves to the combined floodgate of another road on and off switch 2 in linkage
In path and stop the feed motion of another road on and off switch 2.
According to one embodiment of the disclosure, barrier assembly 50 includes stopping connecting rod 52, stops that one end of connecting rod 50 pivots
To the housing of dual-power transfer switch, stop that the other end of connecting rod 50 is relative to each other slidably coupled with the second blocking lever 40,
Stop that connecting rod 50 is configured in the making process of on and off switch 1 all the way rotate to abut under the drive of the second blocking lever 40
The crank of the main shaft 22 of another road on and off switch 2, and then stop the 2-in-1 lock of another road on and off switch.
According to one embodiment of the disclosure, stop that connecting rod 52 is included from stop connecting rod 52 towards another road on and off switch 2
Main shaft 22 project protuberance 54.
As illustrated, in one embodiment, stop that connecting rod 52 and protuberance 54 are same component or integral member.Stop
Connecting rod 52 is pivoted with the housing of dual-power transfer switch, stops that connecting rod 50 is also slidably coupled with the second blocking lever 40.In user
Under the maloperation closed a floodgate simultaneously, when the combined floodgate of on and off switch 1 all the way, under the drive of the second blocking lever 40, stop connecting rod 52
Rotated together with (be illustrated as clockwise) with protuberance 54 with the crank of the main shaft 22 near another road on and off switch 2.When de-
Button bar 24 is promoted by the second blocking lever 40 and shift onto always extreme position, and elastic component starts to be rotated further with main shaft 12 and drawn
Stretch.At the same time, the 2-in-1 lock of another road on and off switch, main shaft 22 drive crank rotation (counterclockwise), and protuberance 54 is with stop connecting rod
52 and stop motion, when main shaft 22 continue toward combined floodgate direction move (counterclockwise), until crank 22 is blocked by protuberance 54, one
After individual little impact, main shaft 12,22 is then rotated toward separating brake direction in the presence of tripping spring, will not be produced so as to ensure that
Short circuit between two power supplys, protection circuit safety.
In accordance with an embodiment of the present disclosure, a kind of method for operating dual-power transfer switch is also provided.With the disclosure
The mechanical interlocks of embodiment, dual-power transfer switch are similar to, and can also provide safe and reliable using the present processes
Interlocking, prevents the security incident such as short circuit between power supply.
By the teaching gone out given in above description and relevant drawings, many modifications of the disclosure described herein
Will be appreciated by disclosure those skilled in the relevant art with other embodiment.Therefore, the be understood that disclosure
Embodiment is not limited to disclosed specific embodiment, and modification and other embodiment are intended to be included in this
Within scope of disclosure.In addition, although some the example combination forms of above description and relevant drawings in part and/or function
Example embodiment is described under background, it will be appreciated that, part can be provided by alternate embodiment
And/or the different combinations of function are without departing from the scope of the present disclosure.On this point, for example, with it is explicitly described above
Different part and/or other combining forms of function be also expected within the scope of the present disclosure.Although here
Employ concrete term, but they are only used with general and descriptive implication and be not intended to be limited.
Claims (9)
1. a kind of mechanical interlocks (10), for dual-power transfer switch, it is characterised in that include：
First blocking lever (30), its crank coupling with the main shaft (12) of the on and off switch all the way (1) of the dual-power transfer switch
Close, and be configured to the combined floodgate of on and off switch (1) all the way and move, wherein the on and off switch all the way (1) is closed
During lock, the main shaft (12) of the on and off switch all the way (1) is rotated in a first direction；
With second blocking lever (40) of first blocking lever (30) pivot joint, which is also pivoted to the base of the dual-power transfer switch
Seat, and be configured to the motion of first blocking lever (30) and along second direction opposite to the first direction
Rotation；
The release lever (24) of another road on and off switch (2) of wherein described dual-power transfer switch is configured in second interlocking
In the rotating path of bar (40) and it is configured in the rotating path of second blocking lever (40) by second blocking lever
(40) abut to keep the trip status of another road on and off switch (2).
2. mechanical interlocks (10) according to claim 1, it is characterised in that first blocking lever (30) is provided with
Chute (32) so that the main shaft (12) of first blocking lever (30) and the on and off switch all the way (1) relative to each other slides
Ground coupling.
3. mechanical interlocks (10) according to claim 2, it is characterised in that the master of the on and off switch all the way (1)
Force application part (34) is provided between the crank of axle (12) and first blocking lever (30), the force application part (34) is configured to
First blocking lever (30) is exerted a force in response to the combined floodgate of the on and off switch all the way (1), to accelerate second interlocking
The motion of bar (40).
4. mechanical interlocks (10) according to any one of claim 1-3, it is characterised in that the power supply all the way is opened
The main shaft (12) for closing (1) is provided with damped part, for weakening the main shaft (12) of the on and off switch (1) all the way during closing a floodgate
Kinergety.
5. mechanical interlocks (10) according to claim 4, it is characterised in that the damped part is spring, described
One end of spring is arranged on the main shaft (12) of on and off switch (1) all the way, and the other end is arranged in the dual power supply conversion and opens
On the housing of pass, and it is configured at least open the power supply all the way at the initial stage of the on and off switch all the way (1) combined floodgate motion
The main shaft (12) of pass applies resistance.
6. mechanical interlocks (10) according to any one of claim 1-3, it is characterised in that also include and described
The barrier assembly (50) of the feed motion linkage of road on and off switch (1), the barrier assembly (50) are configured to：Described another
When road on and off switch (2) normally closes a floodgate, the barrier assembly (50) positioned at the combined floodgate path of another road on and off switch (2) it
Outward, and in the on and off switch all the way (1) and another road on and off switch (2) while when closing a floodgate, the barrier assembly
(50) at least one part moves to another road power supply in linkage with the feed motion of the on and off switch all the way (1) and opens
In closing the combined floodgate path of (2) and stop the feed motion of another road on and off switch (2).
7. mechanical interlocks (10) according to claim 6, it is characterised in that the barrier assembly (50) is including stop
Connecting rod (52), described one end for stopping connecting rod (52) are switched to the housing of the dual-power transfer switch, the stop connecting rod
(50) the other end is relative to each other slidably coupled with second blocking lever (40), and stop connecting rod (50) is configured to
Rotate under the drive of second blocking lever (40) in the making process of the on and off switch all the way (1) described another to abut
The crank of the main shaft (22) of on and off switch (2) all the way.
8. mechanical interlocks (10) according to claim 7, it is characterised in that stop connecting rod (52) is included from institute
State and stop connecting rod (52) towards the prominent protuberance (54) of the main shaft (22) of another road on and off switch (2).
9. a kind of dual-power transfer switch, it is characterised in that include：
On and off switch (1) all the way；
Another road on and off switch (2)；
Mechanical interlocks (10) according to any one of claim 1-8, mechanical interlocks (10) center pair
It is arranged in the dual-power transfer switch both sides with claiming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621102423.5U CN206059218U (en) | 2016-09-30 | 2016-09-30 | Mechanical interlocks and dual-power transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621102423.5U CN206059218U (en) | 2016-09-30 | 2016-09-30 | Mechanical interlocks and dual-power transfer switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206059218U true CN206059218U (en) | 2017-03-29 |
Family
ID=58363487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621102423.5U Withdrawn - After Issue CN206059218U (en) | 2016-09-30 | 2016-09-30 | Mechanical interlocks and dual-power transfer switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206059218U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316764A (en) * | 2017-06-26 | 2017-11-03 | 安徽开诚电器有限公司 | The interlock and change-over switch of change-over switch |
| CN107887200A (en) * | 2016-09-30 | 2018-04-06 | 施耐德电气工业公司 | Mechanical interlocks, dual-power transfer switch and the method for operating it |
| CN112447426A (en) * | 2019-09-04 | 2021-03-05 | Abb瑞士股份有限公司 | Mechanical interlocking device and dual-power supply system |
| CN116779355A (en) * | 2023-08-17 | 2023-09-19 | 希格玛电气(珠海)有限公司 | Two unification mechanical interlocking device of dual supply inlet wire cabinet |
-
2016
- 2016-09-30 CN CN201621102423.5U patent/CN206059218U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887200A (en) * | 2016-09-30 | 2018-04-06 | 施耐德电气工业公司 | Mechanical interlocks, dual-power transfer switch and the method for operating it |
| CN107887200B (en) * | 2016-09-30 | 2020-01-03 | 施耐德电气工业公司 | Mechanical interlock, dual power transfer switch and method for operating the same |
| CN107316764A (en) * | 2017-06-26 | 2017-11-03 | 安徽开诚电器有限公司 | The interlock and change-over switch of change-over switch |
| CN112447426A (en) * | 2019-09-04 | 2021-03-05 | Abb瑞士股份有限公司 | Mechanical interlocking device and dual-power supply system |
| CN116779355A (en) * | 2023-08-17 | 2023-09-19 | 希格玛电气(珠海)有限公司 | Two unification mechanical interlocking device of dual supply inlet wire cabinet |
| CN116779355B (en) * | 2023-08-17 | 2024-03-26 | 希格玛电气(珠海)有限公司 | Two unification mechanical interlocking device of dual supply inlet wire cabinet |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20200103 |
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