CN220107649U - Low-voltage switch cabinet capable of automatically switching three-way power inlet wires - Google Patents
Low-voltage switch cabinet capable of automatically switching three-way power inlet wires Download PDFInfo
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- CN220107649U CN220107649U CN202321476311.6U CN202321476311U CN220107649U CN 220107649 U CN220107649 U CN 220107649U CN 202321476311 U CN202321476311 U CN 202321476311U CN 220107649 U CN220107649 U CN 220107649U
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- power supply
- switching device
- automatic switching
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- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model relates to the field of low-voltage electrical equipment, in particular to a low-voltage switch cabinet capable of automatically switching three-way power supply incoming lines, which comprises a switch cabinet body, a first CB-level dual-power supply switching device combination and a second CB-level dual-power supply switching device combination, wherein the first CB-level dual-power supply switching device combination and the second CB-level dual-power supply switching device combination are positioned in the switch cabinet body, two incoming line sides of the first dual-power supply automatic switching device are respectively connected with a first external power supply and a second external power supply, an outgoing line side of the first dual-power supply automatic switching device is connected with a common incoming line end of the second dual-power supply automatic switching device, a standby incoming line end of the second dual-power supply automatic switching device is connected with a third external power supply, and an outgoing line end of the second dual-power supply automatic switching device is connected with a feeder cabinet load. According to the utility model, the first dual-power controller is responsible for automatic mutual switching between the first commercial power and the second commercial power, and the second dual-power controller is used for realizing automatic switching between the third external power and the combined power, so that automatic switching of three-way incoming lines is realized.
Description
Technical Field
The utility model relates to the field of piezoelectric devices, in particular to a low-voltage switch cabinet capable of automatically switching three paths of power supply incoming lines.
Background
Along with the rapid development of industrial intelligence, the requirements of industrial users on the reliability of power supply are higher and higher, the low-voltage incoming line is basically powered by two paths of power supplies, but the requirements of individual user loads or equipment production processes are higher, the incoming line adopts three paths of power supplies, and automatic switching is also required to be realized. Referring to fig. 1, the scheme is generally implemented by adding a controller or a spare power automatic switching to three frame circuit breakers, and by adding a spare power automatic switching to 3 power-operated molded case circuit breakers. But both of these schemes have drawbacks: in the first scheme, a frame breaker is selected for the current above 630A generally, the cost of the scheme is too high for the small current selection, and even if overload protection is realized by adopting large current to set the current of the release, the overload current protection range is reduced, the current protection value is inaccurate, and potential safety hazards exist; the second solution does not allow to add mechanical interlocks, not meeting the specification requirements.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a low-voltage switch cabinet capable of automatically switching three paths of power supply incoming lines.
The utility model is realized by the following technical scheme:
the low-voltage switch cabinet comprises a switch cabinet body, a first CB-level dual-power switching device combination and a second CB-level dual-power switching device combination, wherein the first CB-level dual-power switching device combination and the second CB-level dual-power switching device combination are positioned in the switch cabinet body, the first CB-level dual-power switching device combination comprises a first dual-power automatic switching device and a first dual-power controller, the second CB-level dual-power switching device combination comprises a second dual-power automatic switching device and a second dual-power controller, two incoming line sides of the first dual-power automatic switching device are respectively connected with a first external power supply and a second external power supply, an outgoing line side of the first dual-power automatic switching device is connected with a common incoming line end of the second dual-power automatic switching device, a standby incoming line end of the second dual-power automatic switching device is connected with a third external power supply, and an outgoing line end of the second dual-power automatic switching device is connected with a feeder cabinet load; the output end of the first dual-power controller is connected with the control end of the first dual-power automatic switching device, and the output end of the second dual-power controller is connected with the control end of the second dual-power automatic switching device.
Preferably, the first external power supply is a first commercial power, the second external power supply is a second commercial power, and two incoming line sides of the first dual-power automatic switching device are respectively connected with an incoming line cable of the first commercial power and an incoming line cable of the second commercial power.
Preferably, the third external power source is a third mains or generator.
Preferably, the incoming line currents of the first external power supply, the second external power supply, and the third external power supply are all less than 630A.
Preferably, the first external power supply, the second external power supply and the third external power supply are respectively provided with a first circuit breaker, a second circuit breaker and a third circuit breaker, and a mechanical interlocking structure is arranged between every two of the first circuit breaker, the second circuit breaker and the third circuit breaker.
Preferably, the automatic switching device also comprises a feeding main busbar, and the outlet end of the second double-power automatic switching device is connected with a feeder cabinet load through the feeding main busbar.
Preferably, a main bus bar is further arranged between the wire outlet end of the second dual-power automatic switching device and the feed bus bar.
Preferably, a bus bar is arranged above the inner side of the switch cabinet body, and the main bus bar is arranged inside the switch cabinet body through the bus bar.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model relates to a low-voltage switch cabinet capable of automatically switching three-way power inlet wires, which is combined by adopting 2 CB-level double-power switching devices, is responsible for automatic mutual switching between two power supplies of a first commercial power and a second commercial power through a first double-power controller, and realizes automatic switching of a third external power supply and a common inlet wire end connected combined power supply by the first external power supply and the second external power supply through a second double-power controller, thereby realizing automatic switching of the three-way power inlet wires, meeting the rated current requirement, enabling various specifications below 630A to be achieved, enabling the minimum to be 10A, and having perfect mechanical interlocking, and enabling the current price of the same specification to be 1/3 of the first scheme. The utility model has reasonable design scheme and high cost performance, can realize the automatic switching of the three paths of small-current power supply incoming lines, and has perfect mechanical interlocking.
Drawings
FIG. 1 is a circuit diagram of a conventional scheme for three-way power switching;
FIG. 2 is a front view of a low voltage switchgear of the present utility model with automatic switching of three power supply lines;
FIG. 3 is a side view of a three-way power inlet automatic switching low voltage switchgear of the present utility model;
fig. 4 is a circuit diagram of a three-way power switch of the present utility model.
In the figure, 1, a feed main busbar; 2. a first dual power controller; 3. a primary bus bar; 4. a first dual-power automatic switching device; 5. a second dual-power automatic switching device; 6. a first incoming line side busbar; 7. a first incoming cable; 8. the second standby incoming line side busbar; 9. a third incoming cable; 10. a cable fixing beam; 11. a bus bar clip; 12. a first outgoing bus bar; 13. and a second outgoing bus bar.
Detailed Description
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
The utility model discloses a low-voltage switch cabinet capable of automatically switching three-way power inlet wires, which comprises a switch cabinet body, a first CB-level dual-power switching device combination and a second CB-level dual-power switching device combination, wherein the first CB-level dual-power switching device combination and the second CB-level dual-power switching device combination are positioned in the switch cabinet body, the first CB-level dual-power switching device combination comprises a first dual-power automatic switching device 4 and a first dual-power controller 2, the second CB-level dual-power switching device combination comprises a second dual-power automatic switching device 5 and a second dual-power controller, the output end of the first dual-power controller 2 is connected with the control end of the first dual-power automatic switching device 4, and the output end of the second dual-power controller is connected with the control end of the second dual-power automatic switching device 5.
The two incoming line sides of the first dual-power automatic switching device 4 are respectively connected with a first external power supply and a second external power supply, the first external power supply is first commercial power, the second external power supply is second commercial power, the first incoming line side busbar 6 of the two incoming line sides of the first dual-power automatic switching device 4 is respectively connected with a first incoming line cable 7 of the first commercial power and a second incoming line cable of the second commercial power, and the first dual-power controller 2 is responsible for automatic mutual switching between the two power supplies of the first commercial power and the second commercial power.
The outgoing line side of the first dual-power automatic switching device 4 is connected with the common incoming line end of the second dual-power automatic switching device 5 through a first outgoing line bus bar 12, the standby incoming line end of the second dual-power automatic switching device 5 is connected with a third external power supply, and the outgoing line end of the second dual-power automatic switching device 5 is connected with a feeder cabinet load through a second outgoing line bus bar 13.
The automatic switching device also comprises a feeding main busbar 1, the outgoing line end of the second double-power automatic switching device 5 is connected with a feeder cabinet load through the feeding main busbar 1, the power supply to the feeder cabinet load is realized, and the automatic switching of the combined power supply which is connected with the common incoming line end and is composed of the first external power supply and the second external power supply is realized through a second double-power controller.
And a main bus bar 3 is further arranged between the wire outlet end of the second dual-power automatic switching device 5 and the feed bus bar, the main bus bar 3 is arranged inside the switch cabinet body through a bus bar clamp 11, and the bus bar clamp 11 is positioned above the inner side of the switch cabinet body.
The third external power supply is a third commercial power or a generator, and a third incoming line cable 9 of the third external power supply is connected with a second standby incoming line side busbar 8 of the standby incoming line end of the second dual-power automatic switching device 5. Wherein the first incoming cable 7, the second incoming cable and the third incoming cable 9 are fixed inside the switchgear by means of a cable fixing beam 10.
The incoming line currents of the first external power supply, the second external power supply, and the third external power supply are all less than 630A.
The first external power supply, the second external power supply and the third external power supply are respectively provided with a first circuit breaker, a second circuit breaker and a third circuit breaker on the incoming cables, namely, the first incoming cable 7 is provided with the first circuit breaker, the second incoming cable is provided with the second circuit breaker, the third incoming cable 9 is provided with the third circuit breaker, and a mechanical interlocking structure is arranged between every two of the first circuit breaker, the second circuit breaker and the third circuit breaker.
The three-way power supply incoming line automatic switching scheme provided by the utility model is used in the technical field of the piezoelectric device, an advanced structure is adopted, and the automatic switching of the three-way incoming line power supply is completed after the two double-power supply automatic switching devices are combined. Meanwhile, the switching device has perfect mechanical interlocking, perfect and reliable protection function, convenient and reasonable installation and high cost performance, and is suitable for electric control in the low-voltage power transmission and distribution industry.
The foregoing description of the preferred embodiment of the present utility model is not intended to limit the technical solution of the present utility model in any way, and it should be understood that the technical solution can be modified and replaced in several ways without departing from the spirit and principle of the present utility model, and these modifications and substitutions are also included in the protection scope of the claims.
It will be appreciated by those skilled in the art that the present utility model can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the utility model or equivalents thereto are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (8)
1. The low-voltage switch cabinet is characterized by comprising a switch cabinet body, a first CB-level dual-power switching device combination and a second CB-level dual-power switching device combination, wherein the first CB-level dual-power switching device combination and the second CB-level dual-power switching device combination are positioned in the switch cabinet body, the first CB-level dual-power switching device combination comprises a first dual-power automatic switching device (4) and a first dual-power controller (2), the second CB-level dual-power switching device combination comprises a second dual-power automatic switching device (5) and a second dual-power controller, two incoming line sides of the first dual-power automatic switching device (4) are respectively connected with a first external power supply and a second external power supply, an outgoing line side of the first dual-power automatic switching device (4) is connected with a common incoming line end of the second dual-power automatic switching device (5), and a standby incoming line end of the second dual-power automatic switching device (5) is connected with a third external power supply, and an outgoing line end of the second dual-power automatic switching device (5) is connected with a feeder cabinet load; the output end of the first dual-power controller (2) is connected with the control end of the first dual-power automatic switching device (4), and the output end of the second dual-power controller is connected with the control end of the second dual-power automatic switching device (5).
2. The low-voltage switch cabinet for automatically switching the incoming lines of three-way power supply according to claim 1, wherein the first external power supply is a first commercial power, the second external power supply is a second commercial power, and two incoming line sides of the first dual-power supply automatic switching device (4) are respectively connected with an incoming line cable of the first commercial power and an incoming line cable of the second commercial power.
3. The three-way power inlet automatic switching low-voltage switchgear according to claim 1, characterized in that the third external power source is a third mains or a generator.
4. The three-way power inlet automatic switching low voltage switchgear of claim 1 wherein the inlet currents of the first, second and third external power sources are all less than 630A.
5. The low-voltage switch cabinet for automatically switching the incoming lines of three-way power supply according to claim 1, wherein the incoming lines of the first external power supply, the second external power supply and the third external power supply are respectively provided with a first circuit breaker, a second circuit breaker and a third circuit breaker, and a mechanical interlocking structure is arranged between every two of the first circuit breaker, the second circuit breaker and the third circuit breaker.
6. The low-voltage switch cabinet with automatic switching of three-way power supply inlet wires according to claim 1, further comprising a feeding main busbar (1), wherein the outlet end of the second dual-power supply automatic switching device (5) is connected with a feeder cabinet load through the feeding main busbar (1).
7. The low-voltage switch cabinet for automatically switching the three-way power supply inlet wire according to claim 6, wherein a main bus bar (3) is further arranged between the outlet end of the second dual-power supply automatic switching device (5) and the feed bus bar.
8. The low-voltage switch cabinet for automatically switching the three-way power supply incoming line according to claim 7, wherein a bus bar clamp (11) is arranged above the inner side of the switch cabinet body, and the main bus bar (3) is installed inside the switch cabinet body through the bus bar clamp (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321476311.6U CN220107649U (en) | 2023-06-09 | 2023-06-09 | Low-voltage switch cabinet capable of automatically switching three-way power inlet wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321476311.6U CN220107649U (en) | 2023-06-09 | 2023-06-09 | Low-voltage switch cabinet capable of automatically switching three-way power inlet wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220107649U true CN220107649U (en) | 2023-11-28 |
Family
ID=88846716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321476311.6U Active CN220107649U (en) | 2023-06-09 | 2023-06-09 | Low-voltage switch cabinet capable of automatically switching three-way power inlet wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220107649U (en) |
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2023
- 2023-06-09 CN CN202321476311.6U patent/CN220107649U/en active Active
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