CN207504336U - Switchgear - Google Patents
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- CN207504336U CN207504336U CN201721395820.0U CN201721395820U CN207504336U CN 207504336 U CN207504336 U CN 207504336U CN 201721395820 U CN201721395820 U CN 201721395820U CN 207504336 U CN207504336 U CN 207504336U
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- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 23
- 230000009466 transformation Effects 0.000 claims description 9
- 230000006837 decompression Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The switchgear that the utility model embodiment provides, is related to technical field of electric equipment.The switchgear is for being controlled and being protected to the first power supply and second source, including the first breaker, the second breaker, the first current supply circuit and the second current supply circuit.First breaker includes the first coil without tension, and the first current supply circuit is connected between the first coil without tension and the first power supply, and the first current supply circuit includes the first overcurrent protective device.Second breaker includes the second coil without tension, and the second current supply circuit is connected between the second coil without tension and second source, and the second current supply circuit includes the second overcurrent protective device.By above-mentioned design, switchgear uses component less, can realize three sect current protection and o-volt protection to the first power supply and second source.
Description
Technical field
The utility model is related to technical field of electric equipment, in particular to a kind of switchgear.
Background technology
Switchgear (switch cabinet) is a kind of electrical equipment, and main function is to be generated electricity in electric system, is defeated
During electricity, distribution and electric energy are converted, folding, control and protection electrical equipment are carried out.In the prior art, the design of switchgear
Structure is more, in order to ensure the security reliability used, uses component mostly more, cost is higher.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of switchgears, are used with solving existing switchgear
The problem of component is more, and cost is higher.
To achieve the above object, the utility model embodiment adopts the following technical scheme that：
A kind of switchgear, for the first power supply and second source to be controlled and protected, the switchgear includes first
Breaker, the second breaker, the first current supply circuit and the second current supply circuit；
First breaker includes the first coil without tension, and first current supply circuit is connected to first coil without tension
Between first power supply, first current supply circuit includes the first overcurrent protective device, first overcurrent protective device
To cut off the power when electric current is more than preset value, to realize three sect current protection, first breaker passes through the first control
Switch connect with the first current supply circuit, to first coil without tension sense voltage less than rated value when, by described
First coil without tension control the first control switch cutoff power supply, to realize o-volt protection；
Second breaker includes the second coil without tension, and second current supply circuit is connected to second coil without tension
Between the second source, second current supply circuit includes the second overcurrent protective device, second overcurrent protective device
To cut off the power when electric current is more than preset value, to realize three sect current protection, second breaker passes through the second control
Switch connect with the second current supply circuit, to second coil without tension sense voltage less than rated value when, by described
Second coil without tension control the second control switch cutoff power supply, to realize o-volt protection.
Optionally, first breaker further includes the first separating brake indicator light and the first combined floodgate indicator light, and described second is disconnected
Road device further includes the second separating brake indicator light and the second combined floodgate indicator light；
The first separating brake indicator light and the first combined floodgate indicator light are connected to first current supply circuit and the first decompression line
Between circle, indicated respectively with the cut-out to power supply and connected state；
The second separating brake indicator light and the second combined floodgate indicator light are connected to second current supply circuit and the second decompression line
Between circle, indicated respectively with the cut-out to power supply and connected state.
Optionally, first current supply circuit further includes the first transformer, and second current supply circuit further includes the second change
Depressor；
One end of first overcurrent protective device is connected to first power supply, the other end is connected to first transformation
The primary coil of device, the first separating brake indicator light and the first combined floodgate indicator light are connected to the secondary coil of first transformer
Between first coil without tension；
One end of second overcurrent protective device is connected to the second source, the other end is connected to second transformation
The primary coil of device, the second separating brake indicator light and the second combined floodgate indicator light are connected to the secondary coil of second transformer
Between second coil without tension.
Optionally, the switchgear further includes ground protection circuit, and the ground protection circuit is connected with described in instruction and connects
Detection indicator light whether ground protection circuit normal work.
Optionally, the switchgear further include be external equipment power supply power distribution circuit, the power distribution circuit and institute
The output terminal connection of the first breaker and the second breaker is stated, is powered using the power supply for receiving output terminal output as external equipment.
Optionally, the power distribution circuit includes potential device, the primary coil of the potential device and the described first open circuit
The connection of the output terminal of device and the second breaker, secondary coil and external equipment are electrically connected, and the potential device is to by described in
First breaker and the voltage transformation of the second breaker output for voltage needed for external equipment and export.
Optionally, the switchgear further includes voltage detecting circuit and current detection circuit；
The voltage detecting circuit is connect with the output terminal of first breaker and the second breaker, the current detecting
Circuit is connect with the output terminal of first breaker and the second breaker.
Optionally, first power supply includes the power supply after potential device is depressured；The second source includes emergent hair
The power supply that motor is sent out.
Optionally, the switchgear further includes：Governor, voltage regulator and detection components；
The governor is connect with the emergency generator, to control the excitation of the emergency generator；
The voltage regulator is connect with the emergency generator, and the voltage to be exported to the emergency generator carries out
It adjusts；
The detection components are connect with the output terminal of the voltage regulator, to the electricity exported to the voltage regulator
Pressure and electric current are detected.
Optionally, the switchgear further includes display module, and the display module is connect with the detection components, to right
The voltage and current that the detection components detect is shown.
The switchgear that the utility model embodiment provides, passes through the ingehious design to switchgear so that using relative to existing
Three sect current protection and o-volt protection can be realized in the component for having technology less, with ensuring switchgear safety and reliability
Meanwhile the cost of switchgear is effectively reduced, the cost performance of switchgear is improved, is suitble to large-scale promotion application.
For the above-mentioned purpose of the utility model, feature and advantage is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and
Attached drawing appended by cooperation, is described in detail below.
Description of the drawings
Fig. 1 is the circuit diagram of switchgear that the utility model embodiment provides.
Fig. 2 is another circuit diagram of switchgear that the utility model embodiment provides.
Fig. 3 is a kind of structure diagram of switchgear that the utility model embodiment provides.
Fig. 4 is the protection flow chart of the first power supply that the utility model embodiment provides.
Fig. 5 is the protection flow chart of second source that the utility model embodiment provides.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Usually retouched in attached drawing here
The component of the utility model embodiment stated and shown can be configured to arrange and design with a variety of different.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.In the utility model
In description, term " first ", " second " etc. be only used for distinguish description, and it is not intended that only or imply relative importance.
As shown in Figure 1, the utility model embodiment provides a kind of switchgear, for the first power supply and second source into
Row control and protection.The switchgear includes the first breaker-Q1, the second breaker-Q2, the first current supply circuit U1 and second and supplies
Electrical circuit U2.
First power supply and second source can be there are many selections, and optionally, in the present embodiment, first power supply includes
Power supply after potential device+D-1T decompressions, the second source include the power supply that emergency generator is sent out.
The utility model embodiment, the first breaker-Q1 is identical with the structure of the second breaker-Q2, and the two is respectively with
One power supply is connected with second source, to realize three sect current protection and the o-volt protection to the first power supply and second source.
Wherein, the first breaker-Q1 is connected to institute including the first coil without tension MN1, the first current supply circuit U1
It stating between the first coil without tension MN1 and first power supply, the first current supply circuit U1 includes the first overcurrent protective device F1,
The first overcurrent protective device F1 is described to realize three sect current protection to cut off the power when electric current is more than preset value
First breaker-Q1 switchs Q11 by the first control and is connect with the first current supply circuit U1, in first coil without tension
When MN1 senses that voltage is less than rated value, the first control switch Q11 cut-outs are controlled by the first coil without tension MN1
Power supply, to realize o-volt protection.
Optionally, the first current supply circuit U1 further includes the first transformer-T1, one end of the first overcurrent protective device F1
It is connected to first power supply, the other end is connected to the primary coil of the first transformer-T1.
The electric current that first transformer-T1 can export the first power supply carries out voltage stabilizing and voltage is converted, steady improving power supply
Qualitatively stablizing for output voltage is converted meanwhile, it is capable to be realized according to actual demand, improves using flexible.
Accordingly, the second breaker-Q2 includes the second coil without tension MN2, and the second current supply circuit U2 is connected to
Between the second coil without tension MN2 and the second source, the second current supply circuit U2 includes the second overcurrent protective device
F3, the second overcurrent protective device F3 when electric current is more than preset value to cut off the power, to realize three sect current protection, institute
It states the second breaker-Q2 to connect with the second current supply circuit U2 by the second control switch Q21, in second coil without tension
When MN2 senses that voltage is less than rated value, the second control switch Q21 cut-outs are controlled by the second coil without tension MN2
Power supply, to realize o-volt protection.
Optionally, the second current supply circuit U2 further includes the second transformer-T2, one end of the second overcurrent protective device F3
It is connected to the second source, the other end is connected to the primary coil of the second transformer-T2.
The electric current that second transformer-T2 can export second source carries out voltage stabilizing and voltage is converted, steady improving power supply
Qualitatively stablizing for output voltage is converted meanwhile, it is capable to be realized according to actual demand, improves using flexible.
In order to improve the property easy to use of switchgear, optionally, the first breaker-Q further includes the instruction of the first separating brake
Lamp-H1 and the first combined floodgate indicator light-H2, the first separating brake indicator light-H1 and the first combined floodgate indicator light-H2 is connected to described
Between one current supply circuit U1 and the first coil without tension MN1, indicated respectively with the cut-out to power supply and connected state.
Second breaker-the Q2 further includes the second separating brake indicator light-H3 and the second combined floodgate indicator light-H4, and described second
Separating brake indicator light-H3 and the second combined floodgate indicator light-H4 be connected to the second current supply circuit U2 and the second coil without tension MN2 it
Between, it is indicated respectively with the cut-out to power supply and connected state.
In the case where being provided with the first transformer-T1 and the second transformer-T2, the first separating brake indicator light-H1 and
First combined floodgate indicator light-H2 is connected between the secondary coil of the first transformer-T1 and the first coil without tension MN1.
The second separating brake indicator light-H3 and the second combined floodgate indicator light-H4 is connected to secondary coil and the institute of the second transformer-T2
It states between the second coil without tension MN2.
It should be appreciated that the first current supply circuit U1 and the second current supply circuit U2 there can also be other designs, power back with first
For the U1 of road, the first current supply circuit U1 can also include third current protector F2, and third current protector F2 is connected to first
The secondary coil of transformer-T1 to ensure the reliability of the first transformer-T1 output voltages, further ensures that Supply Security.
Fig. 2 is please referred to, in order to further improve the security reliability of switchgear, optionally, the switchgear also wraps
Ground protection circuit is included, the detection that the ground protection circuit is connected with whether indicating the ground protection circuit normal work refers to
Show lamp.
Ground protection circuit is there are many design method, for example, can include insulating monitor DJY-1S, the insulating monitor
DJY-1S is connected with fuse-F6 and detection indicator light-H5.It should be appreciated that in the utility model embodiment, ground protection circuit
Realization structure include but not limited to this.
In order to meet the power demand of distinct device, optionally, the switchgear further includes to be external equipment power supply
Power distribution circuit, the power distribution circuit connect with the output terminal of the first breaker-Q and the second breaker-Q2.
Optionally, the power distribution circuit includes potential device+D-2T, the primary coil of the potential device+D-2T and institute
Output terminal connection, secondary coil and the external equipment for stating the first breaker-Q1 and the second breaker-Q2 are electrically connected, the change
Equipment+D-2T is pressed to be needed for external equipment by the voltage transformation of the first breaker-Q and the second breaker-Q2 outputs
Voltage simultaneously exports.
Wherein, external equipment can there are many, such as：Can be room intraoral illumination equipment, room interpolation block, brake cabinet, transmission
Cabinet, same period cabinet etc..
According to actual demand, the switchgear can also include voltage detecting circuit and current detection circuit.The voltage
Detection circuit is connect with the output terminal of the first breaker-Q1 and the second breaker-Q2, the current detection circuit with it is described
First breaker-Q1 is connected with the output terminal of the second breaker-Q2.
Fig. 3 is please referred to, in the case where second source includes emergency generator 12, optionally, the switchgear is also
Including governor 11, voltage regulator 13, detection components 14 and display module 15.
The governor 11 is connect with the emergency generator 12, to control the excitation of the emergency generator 12, institute
It states voltage regulator 13 to connect with the emergency generator 12, the voltage to export the emergency generator 12 is adjusted
Section, the detection components 14 are connect with the output terminal of the voltage regulator 13, to what is exported to the voltage regulator 13
Voltage and current is detected, and the display module 15 is connect with the detection components 14, to be examined to the detection components 14
The voltage and current measured is shown.
By that the integrated of governor 11, voltage regulator 13, detection components 14 and display module 15, can send out emergent
The output current of motor 12 is adjusted and shows, by enter the output current of the emergency generator 12 before breaker into
Row is adjusted, and further ensures the safety and reliability of power supply.
It should be noted that on the basis of foregoing circuit, the utility model embodiment is also associated with the first device of part auxiliary
Part and line, for ensureing the normal operation of circuit, the use of these auxiliary elements belongs to the circuit application habit of industry universal
Used, this is no longer going to repeat them.
In order to more clearly be illustrated to the switchgear in the utility model embodiment, now using first voltage as process
400V power supplys after transformer+D-1T decompressions, second voltage are the exemplary field of 400V power supplys that emergency diesel dynamo is sent out
For scape, the operation principle of switchgear is illustrated.
The most important function of switchgear is to the 400V power supplys and emergency diesel dynamo after transformer+D-1T decompressions
The 400V power supplys sent out are controlled by breaker-Q1 and breaker-Q2, are protected respectively, and protection includes three sections of electric currents and protects
Shield and o-volt protection, and two breakers all have separating brake (- H1 ,-H3) instruction and (- H2 ,-H4) instruction of closing a floodgate.
Two-way 400V power supplys can be mutual exclusion, then two breakers can also be designed with interlock function.
Current protector-F1, transformer-T1 and current protector-F2 form breaker-Q1 coil without tension MN1 and divide, close
The AC 220V current supply circuits of lock indicator light.And current protector-F3, transformer-T2 and current protector-F4 composition breaker-
The AC 220V current supply circuits of Q2 coil without tension MN2 and switching on and off indicator light.
400V power grids have the alternate virtual voltage-PV instructions of three-phase and U phase actual currents-PA instructions, and are designed with ground connection and protect
Shield and instruction-H5.
Distributing function is also designed in cabinet, for example, two-way AC 400V power supplys can be provided for barracks and by a transformation
Device+D-2T decompressions generate AC 220V power supplys and are respectively supplied to other power control cabinets and equipment.
Power-generating control system is also devised in cabinet, power-generating control system can be adjusted by governor 11, such as 2301A, voltage
Device 13, net-connected controller SPM-D11, lead-in circuit breaker, ION7330 electric instruments, generator end detecting voltage by three phase, three-phase electricity
The links such as stream detects, active power is shown, reactive power is shown, voltage is shown, electric current is shown are formed.It is control diesel oil that it, which is acted on,
The rotating speed of machine and the excitation of generator send out stable 3PH, 600V, 50Hz alternating current, then can after testing generator side electricity
Whether pressure, phase, frequency are consistent with bus bar side, grid-connected manually to realize so as to control power generation cabinet lead-in circuit breaker.
2301A electron speed regulators 11 may be used accurately to control the rotating speed of diesel engine in the speed control of diesel engine, from
And ensure the constant frequency of generator output 50Hz, and active equilibrium is realized after grid-connected.
Voltage regulator 13 may be used in the voltage controller of generator, to realize generator output exchange 600V voltages
Stablize, and idle equilibrium is realized after grid-connected.
On the basis of the above, as shown in Figure 4 and Figure 5, the control method of above-mentioned switchgear includes the following steps.
For the first power supply, protected by step S11~step S17.
Step S11, the first overcurrent protective device F1 obtain the electric current of the first power supply output.
Step S12, judges whether the electric current is more than preset value, if the electric current is more than preset value, performs step S13,
If the electric current is less than preset value, step S14 is performed.
Step S13, cuts off the power, to realize three sect current protection.
Step S14 exports the electric current to the first coil without tension MN1.
Step S14, whether the first coil without tension MN1 judges the voltage of the electric current of input less than rated value, if less than specified
Value, then perform step S16, higher than rated value, then perform step S17.
Step S16 switchs Q11 by the first control and cuts off the power.
Step S17 exports the electric current of input.
This protects second source by step S21~step S27.
Step S21, the second overcurrent protective device F3 obtain the electric current of second source output.
Step S22, judges whether the electric current is more than preset value, if the electric current is more than preset value, performs step S23,
If the electric current is less than the preset value, step S24 is performed.
Step S23, cuts off the power, to realize three sect current protection.
Step S24 exports the electric current to the second coil without tension MN2.
Step S25, whether the second coil without tension MN2 judges the voltage of the electric current of input less than rated value, if less than specified
Value, then perform step S26, if higher than rated value, performs step S27.
Step S26 switchs Q21 by the second control and cuts off the power.
Step S27 exports the electric current of input.
In conclusion the switchgear that the utility model embodiment provides, passes through the ingehious design to switchgear so that uses
Three sect current protection and o-volt protection can be realized relative to the less component of the prior art, ensuring that switchgear is safe to use
Reliability simultaneously, effectively reduce the cost of switchgear, improve the cost performance of switchgear, be suitble to large-scale promotion application.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of switchgear, for the first power supply and second source to be controlled and protected, which is characterized in that the switchgear
Including the first breaker (- Q1), the second breaker (- Q2), the first current supply circuit (U1) and the second current supply circuit (U2)；
First breaker (- Q1) includes the first coil without tension (MN1), and first current supply circuit (U1) is connected to described
Between one coil without tension (MN1) and first power supply, first current supply circuit (U1) includes the first overcurrent protective device
(F1), first overcurrent protective device (F1) when electric current is more than preset value to cut off the power, to realize that three sections of electric currents are protected
Shield, first breaker (- Q1) switchs (Q11) by the first control and is connect with the first current supply circuit (U1), to described
When first coil without tension (MN1) senses that voltage is less than rated value, described first is controlled by first coil without tension (MN1)
Control switch (Q11) is cut off the power, to realize o-volt protection；
Second breaker (- Q2) includes the second coil without tension (MN2), and second current supply circuit (U2) is connected to described
Between two coil without tension (MN2) and the second source, second current supply circuit (U2) includes the second overcurrent protective device
(F3), second overcurrent protective device (F3) when electric current is more than preset value to cut off the power, to realize that three sections of electric currents are protected
Shield, second breaker (- Q2) switchs (Q21) by the second control and is connect with the second current supply circuit (U2), to described
When second coil without tension (MN2) senses that voltage is less than rated value, described second is controlled by second coil without tension (MN2)
Control switch (Q21) is cut off the power, to realize o-volt protection.
2. switchgear according to claim 1, which is characterized in that first breaker (- Q1) further includes the first separating brake
Indicator light (- H1) and the first combined floodgate indicator light (- H2), second breaker (- Q2) further include the second separating brake indicator light (- H3)
With the second combined floodgate indicator light (- H4)；
The first separating brake indicator light (- H1) and the first combined floodgate indicator light (- H2) be connected to first current supply circuit (U1) with
Between first coil without tension (MN1), indicated respectively with the cut-out to power supply and connected state；
The second separating brake indicator light (- H3) and the second combined floodgate indicator light (- H4) be connected to second current supply circuit (U2) with
Between second coil without tension (MN2), indicated respectively with the cut-out to power supply and connected state.
3. switchgear according to claim 2, which is characterized in that first current supply circuit (U1) further includes the first transformation
Device (- T1), second current supply circuit (U2) further include the second transformer (- T2)；
One end of first overcurrent protective device (F1) is connected to first power supply, the other end is connected to first transformation
The primary coil of device (- T1), the first separating brake indicator light (- H1) and the first combined floodgate indicator light (- H2) are connected to described first
Between the secondary coil of transformer (- T1) and first coil without tension (MN1)；
One end of second overcurrent protective device (F3) is connected to the second source, the other end is connected to second transformation
The primary coil of device (- T2), the second separating brake indicator light (- H3) and the second combined floodgate indicator light (- H4) are connected to described second
Between the secondary coil of transformer (- T2) and second coil without tension (MN2).
4. switchgear according to claim 1, which is characterized in that the switchgear further includes ground protection circuit, described
Ground protection circuit is connected with detection indicator light whether indicating the ground protection circuit normal work.
5. switchgear according to claim 1, which is characterized in that the switchgear further includes to be external equipment power supply
Power distribution circuit, the power distribution circuit connect with the output terminal of first breaker (- Q1) and the second breaker (- Q2), with
The power supply for receiving output terminal output is powered for external equipment.
6. switchgear according to claim 5, which is characterized in that the power distribution circuit includes potential device (+D-2T), institute
The primary coil and the output terminal of first breaker (- Q1) and the second breaker (- Q2) for stating potential device (+D-2T) connect
Connect, secondary coil and external equipment are electrically connected, the potential device (+D-2T) to by first breaker (- Q1) and
The voltage transformation of second breaker (- Q2) output for voltage needed for external equipment and exports.
7. switchgear according to claim 1, which is characterized in that the switchgear further includes voltage detecting circuit and electric current
Detection circuit；
The voltage detecting circuit is connect with the output terminal of first breaker (- Q1) and the second breaker (- Q2), the electricity
Current detection circuit is connect with the output terminal of first breaker (- Q1) and the second breaker (- Q2).
8. switchgear according to claim 1, which is characterized in that first power supply is included through potential device (+D-1T)
Power supply after decompression；The second source includes the power supply that emergency generator is sent out.
9. switchgear according to claim 8, which is characterized in that the switchgear further includes：Governor, voltage regulator
And detection components；
The governor is connect with the emergency generator, to control the excitation of the emergency generator；
The voltage regulator is connect with the emergency generator, and the voltage to be exported to the emergency generator is adjusted
Section；
The detection components are connect with the output terminal of the voltage regulator, to the voltage that is exported to the voltage regulator and
Electric current is detected.
10. switchgear according to claim 9, which is characterized in that the switchgear further includes display module, the display
Component is connect with the detection components, and the voltage and current to be detected to the detection components is shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721395820.0U CN207504336U (en) | 2017-10-25 | 2017-10-25 | Switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721395820.0U CN207504336U (en) | 2017-10-25 | 2017-10-25 | Switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504336U true CN207504336U (en) | 2018-06-15 |
Family
ID=62501779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721395820.0U Expired - Fee Related CN207504336U (en) | 2017-10-25 | 2017-10-25 | Switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504336U (en) |
-
2017
- 2017-10-25 CN CN201721395820.0U patent/CN207504336U/en not_active Expired - Fee Related
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