CN216672385U - Integrated high-voltage power distribution cabinet with double-fed-out function - Google Patents
Integrated high-voltage power distribution cabinet with double-fed-out function Download PDFInfo
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- CN216672385U CN216672385U CN202121449929.4U CN202121449929U CN216672385U CN 216672385 U CN216672385 U CN 216672385U CN 202121449929 U CN202121449929 U CN 202121449929U CN 216672385 U CN216672385 U CN 216672385U
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- 238000012806 monitoring device Methods 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 24
- 238000004088 simulation Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
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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
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Abstract
The utility model discloses an integrated high-voltage power distribution cabinet with a double-fed-out function, which comprises a cabinet body structure, wherein the upper structure and the lower structure of two vacuum circuit breaker handcarts are arranged, so that power distribution can be fed out for two loads respectively, one common vacuum circuit breaker handcart can be used for one standby, a double-fed-out state is realized when an interlocking device is withdrawn, and a one-used standby state is realized when the interlocking device is put into; when the load side is electrified after the handcart is switched on, an acousto-optic alarm can be given; when a person mistakenly operates to open the wiring cavity, the upper-level high-voltage switch is automatically tripped and gives an alarm through the electric protection device, and personal electric shock accidents caused by misoperation are avoided. The on/off control and microcomputer only protection of the two vacuum circuit breaker hand carts and the far and near control switching functions are completely independent devices and loops, so that the complete independence of the two hand carts is achieved. This patent makes to present the load and can increase one time on the basis that does not change original distribution place area, and it is with low costs to drop into under the assurance security prerequisite, and the practical function is good, has high-voltage board "five prevent" function, fine solution the difficulty that small size electricity distribution room will reach many loads output.
Description
Technical Field
The utility model relates to a power distribution technology, in particular to an integrated high-voltage power distribution cabinet with a double-fed-out function.
Background
The high-voltage power distribution system in China adopts a mode that one cabinet is used for load power distribution, the cabinet body is increased when the load is increased, the current situation that the cabinet body is difficult to increase due to the limitation of the area of a power distribution station can only be realized by expanding a power distribution room, the reconstruction period is long, and the reliability and the safety of power supply cannot be effectively guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an integrated high-voltage power distribution cabinet with a double-feed-out function, which can achieve the purpose of twice feed-out amount originally on the premise of not changing the building area of a power distribution room; in addition, when the load needs to be standby for power supply, the device can achieve the purpose of one common handcart and one standby handcart through the on-off of the two handcarts.
In order to solve the technical problems, the utility model adopts the following technical means:
an integrated high-voltage power distribution cabinet with a double-feed-out function comprises a cabinet body, wherein an instrument cavity, a handcart cavity and a bus wiring cavity are arranged in the cabinet body;
a 1# digital line protection monitoring device, a 2# digital line protection monitoring device, a 1# ammeter, a 2# ammeter and a temperature and humidity controller are arranged in the instrument cavity;
the handcart cavity is provided with a # 1 high-voltage vacuum circuit breaker handcart, a # 2 high-voltage vacuum circuit breaker handcart, a # 1 control and display part, a # 2 control and display part, a # 1 simulation disc, a # 2 simulation disc, an indoor # 1 high-voltage electrified display and an indoor # 2 high-voltage electrified display;
the bus wiring cavity comprises a No. 1 current transformer, a No. 2 current transformer, a No. 1 lightning arrester, a No. 2 lightning arrester, a No. 1 live detection sensor, a No. 2 live detection sensor, a bus, a contact box and an inlet and outlet wire hole;
the two handcarts have mechanical and electrical locking and releasing functions.
The arrangement and connection relationship of the related components are as follows:
the power supply of the No. 1 digital line protection monitoring device is alternating current 220V and is electrically connected with an air switch (1K), and a current measuring terminal and a current protection terminal are electrically connected with the secondary side of a No. 1 current transformer; the voltage measurement and voltage protection terminal is electrically connected with the PT100V (1A 630, 1B630, 1C 630); the input terminal is respectively electrically connected with a far/near control selection switch (1 QK) and a closing/opening switch (1 KK), and the output terminal is electrically connected with components such as a closing coil and a tripping coil of the handcart operating mechanism. The power supply of the 2# digital line protection monitoring device is alternating current 220V and is electrically connected with an air switch (1K), and a current measuring terminal and a current protection terminal are electrically connected with the secondary side of the 2# current transformer; the voltage measurement and voltage protection terminal is electrically connected with the PT100V (2 a630, 2B630, 2C 630); the input terminal is respectively electrically connected with a far/near control selection switch (2 QK) and a closing/opening switch (2 KK), and the output terminal is electrically connected with components such as a closing coil and a tripping coil of the handcart operating mechanism.
The 1# ammeter is electrically connected with the secondary side of the 1# current transformer. The connection mode of the 2# ammeter is the same as that of the 1# ammeter.
The temperature and humidity controller is electrically connected with the air switch (3 k), the condensation sensor and the heater.
The 1# control and display part is electrically connected with the 1# digital line protection monitoring device and is used for providing a working mode instruction and a switching-on/off instruction for the 1# digital line protection monitoring device; the 1# simulation disc is electrically connected with the 1# high-voltage vacuum circuit breaker handcart, and simulates and displays the switching-on and switching-off states of the high-voltage cabinet; the No. 1 indoor high-voltage electrified display is electrically connected with the No. 1 electrified detection sensor to monitor whether the high-voltage power supply is electrified or not. The 2# control and display part is electrically connected with the 2# digital line protection monitoring device and is used for providing a working mode instruction and a switching-on/off instruction for the 2# digital line protection monitoring device; the 2# simulation disc is electrically connected with the 2# high-voltage vacuum circuit breaker handcart, and simulates and displays the switching-on and switching-off states of the high-voltage cabinet; the 2# indoor high-voltage live display is electrically connected with the 2# live detection sensor to monitor whether the high-voltage power supply is live or not.
The primary side of the 1# current transformer is connected with the high-voltage bus, and the secondary side of the 1# current transformer is electrically connected with the 1# digital line protection monitoring device and the 1# ammeter and is used for measuring the current and providing current for overcurrent protection. The contact box is electrically connected with a handcart main loop contact and is used for switching on and switching off a no-load main loop circuit; the 1# lightning arrester is electrically connected with the bus and is used for absorbing overvoltage of the main circuit and preventing overvoltage. The primary side of the 2# current transformer is connected with the high-voltage bus, and the secondary side of the 2# current transformer is electrically connected with the 2# digital line protection monitoring device and the 2# ammeter and is used for measuring the current and providing current for overcurrent protection. The contact box is electrically connected with a handcart main loop contact and is used for switching on and switching off a no-load main loop circuit; the 2# lightning arrester is electrically connected with the bus and is used for absorbing overvoltage of the main circuit and preventing overvoltage.
The 1# primary simulation disc and the 2# primary simulation disc respectively display the switching-on/switching-off states of a 1# high-voltage vacuum circuit breaker handcart and a 2# high-voltage vacuum circuit breaker handcart.
The two handcarts have mechanical and electrical locking and releasing functions. The two handcarts are provided with matched key sleeve locks, and after the matched key sleeve locks are separated from use, and when the auxiliary contacts of the circuit breakers of the two handcarts are electrically interlocked, the cabinet body is in a working state with double output; after the matched key sleeve lock is put into use, when the auxiliary contacts of the two handcart circuit breakers are electrically interlocked, the cabinet is in a common standby working state.
A vertical partition plate is arranged in the cabinet body, the vertical partition plate divides the space in the cabinet body into a front side cavity and a rear side cavity, and the front side cavity is divided into an instrument cavity, a No. 1 handcart cavity and a No. 2 handcart cavity from top to bottom; the rear cavity is a bus wiring cavity.
Through setting up vertical baffle, vertical baffle is the partition cabinet body firstly, and secondly can be as the installation support basis of relevant part.
The matched key sleeve lock 26 is arranged on the left side of the handcart breaker, and the lock hole is arranged on a left side guard plate of the high-voltage cabinet; the electrical interlock is shown in FIG. 3 at line 105 and line 119, and in FIG. 4 at line 205 and line 219; a high-voltage live detection sensor, a No. 1 live detection sensor; the 23-2# live detection sensor and the alarm device are arranged in a bus wiring cavity of the cabinet body, and the alarm device is electrically connected with the electric protection device and is controlled by the electric protection device to work.
The power supply side of the high-voltage live detection sensor is electrically connected with the high-voltage bus, and the load side of the high-voltage live detection sensor is electrically connected with the alarm device; when the high-voltage bus is electrified, the threshold switch action control alarm device gives out acousto-optic alarm of 'high-voltage electrification and distance maintenance'. When the electrified detection sensors 1# and 2# detect that the bus is electrified and the threshold switch acts, the local switch is tripped and an acousto-optic alarm is sent out.
Compared with the prior art, the outstanding characteristics are that:
(1) the upper and lower structure installation of two vacuum circuit breaker handcart is designed through the structure of the cabinet body, the power distribution can be respectively fed out for two loads, one common power supply can be used for standby, the state of one common power supply is used when the interlocking device is switched in, and the state of double feeding out is used when the interlocking device is withdrawn.
(2) The high-voltage electrified detection sensor and the alarm device are additionally arranged, and when the load side is electrified after the handcart is switched on, the handcart can send out acousto-optic alarm of 'high-voltage electrified and distance keeping'.
(3) Install wiring chamber additional and open the door and jump the electrical protection device and the pronunciation alarm device of last level switch, when someone maloperation opened the wiring chamber, make last level high tension switchgear automatic tripping and send out the warning through electrical protection device, avoided the people's body electric shock accident that the maloperation caused.
(4) The independent components are arranged, so that the on/off control and microcomputer protection of the two vacuum circuit breaker hand carts can be realized, and the far and near control switching functions are completely independent components and loops, so that the complete independence of the two hand carts is achieved, the equipment is safer and more reliable, and the maintenance is convenient.
Drawings
Fig. 1 is a front view of the cabinet of the present invention.
Fig. 2 is a schematic cross-sectional view of fig. 1.
Fig. 3 is a handcart control and protection circuit of a 1# high-voltage vacuum circuit breaker.
Fig. 4 is a handcart control and protection circuit of a 2# high-voltage vacuum circuit breaker.
Fig. 5 is a third circuit diagram of the present invention.
Description of reference numerals: 1-a cabinet body; 2-instrument cavity; 3-handcart cavity; 4-bus wiring cavity; 5-1# digital line protection monitoring device; 6-2# digital line protection monitoring device; 7-1# ammeter; 8-2# ammeter; 9-a temperature and humidity controller; a 10-1# high-voltage vacuum circuit breaker handcart; a No. 11-2 high-voltage vacuum circuit breaker handcart; 12-1# control and display section; 13-2# control and display section; 14-1# Primary simulation disc; 15-2# Primary simulation disc; 16-1# indoor high-voltage live display; 17-2# indoor high-voltage live display; 18-1 # current transformer; 19-2# current transformer; 20-1# lightning arrester; 21-2# lightning arrester; 22-1# charged detection sensor; 23-2# charged detection sensor; 24-bus bar and contact box; 25-inlet and outlet wire holes; 26-matching key set lock.
Detailed Description
The present invention will be further described with reference to the following examples.
Referring to fig. 1-5, it can be known that the integrated high voltage power distribution cabinet with the double-fed-out function of the utility model is composed of a cabinet body 1, wherein an instrument cavity 2, a handcart cavity 3 and a bus wiring cavity 4 are arranged in the cabinet body 1; a 1# digital line protection monitoring device 5, a 2# digital line protection monitoring device 6, a 1# ammeter 7, a 2# ammeter 8 and a temperature and humidity controller 9 are arranged in the instrument cavity 2; the handcart cavity 3 is provided with a # 1 high-voltage vacuum circuit breaker handcart 10, a # 2 high-voltage vacuum circuit breaker handcart 11, a # 1 control and display part 12, a # 2 control and display part 13, a # 1 simulation disc, a # 2 simulation disc, a # 1 indoor high-voltage live display 16 and a # 2 indoor high-voltage live display 17; the bus wiring cavity 4 comprises a No. 1 current transformer 18, a No. 2 current transformer 19, a No. 1 lightning arrester 20, a No. 2 lightning arrester 21, a No. 1 live detection sensor 22, a No. 2 live detection sensor 23, a bus and contact box 24 and a wiring inlet and outlet hole 25; the two handcarts have mechanical and electrical locking and releasing functions.
The arrangement and connection relationship of the related components are as follows:
the power supply of the 1# digital line protection monitoring device 5 is alternating current 220V and is electrically connected with an air switch (1K), and a current measuring terminal and a current protection terminal are electrically connected with the secondary side of a 1# current transformer 18; the voltage measurement and voltage protection terminal is electrically connected with the PT100V (1A 630, 1B630, 1C 630); the input terminal is respectively electrically connected with a far/near control selection switch (1 QK) and a closing/opening switch (1 KK), and the output terminal is electrically connected with components such as a closing coil and a tripping coil of the handcart operating mechanism. The power supply of the 2# digital line protection monitoring device 6 is alternating current 220V and is electrically connected with an air switch (1K), and a current measuring terminal and a current protection terminal are electrically connected with the secondary side of a 2# current transformer 19; the voltage measurement and voltage protection terminal is electrically connected with the PT100V (2A 630, 2B630, 2C 630); the input terminal is respectively electrically connected with a far/near control selection switch (2 QK) and a closing/opening switch (2 KK), and the output terminal is electrically connected with components such as a closing coil and a tripping coil of the handcart operating mechanism.
The 1# ammeter 7 is electrically connected with the secondary side of the 1# current transformer 18. The connection mode of the 2# ammeter 8 is the same as that of the 1# ammeter 7.
The temperature and humidity controller 9 is electrically connected with the air switch (3 k), the condensation sensor and the heater.
The 1# control and display part 12 is electrically connected with the 1# digital line protection monitoring device 5 and is used for providing a working mode instruction and a switching-on/off instruction for the 1# digital line protection monitoring device 5; the 1# simulation disc is electrically connected with a 1# high-voltage vacuum circuit breaker handcart 10, and simulates and displays the switching-on and switching-off states of a high-voltage cabinet; the 1# indoor high-voltage live display is electrically connected with the 1# live detection sensor 22 to monitor whether the high-voltage power supply is live or not. The 2# control and display part 13 is electrically connected with the 2# digital line protection monitoring device 6 and is used for providing a working mode instruction and a switching-on/off instruction for the 2# digital line protection monitoring device 6; the 2# simulation disc is electrically connected with a 2# high-voltage vacuum circuit breaker handcart 11, and simulates and displays the switching-on and switching-off states of the high-voltage cabinet; the 2# indoor high-voltage live display is electrically connected with the 2# live detection sensor 23 to monitor whether the high-voltage power supply is live or not.
The primary side of the 1# current transformer 18 is connected with the high-voltage bus, and the secondary side of the 1# current transformer is electrically connected with the 1# digital line protection monitoring device 5 and the 1# ammeter 7, and is used for providing current for measuring the current and performing overcurrent protection. The contact box is electrically connected with a handcart main loop contact and is used for switching on and switching off a no-load main loop circuit; the 1# lightning arrester 20 is electrically connected with the bus and is used for absorbing overvoltage of a main circuit and preventing overvoltage. The 2# current transformer 19 is connected with the high-voltage bus on the primary side and electrically connected with the 2# digital line protection monitoring device 6 and the 2# ammeter 8 on the secondary side, and is used for measuring the current and providing current for overcurrent protection. The contact box is electrically connected with a handcart main loop contact and is used for switching on and switching off a no-load main loop circuit; the 2# lightning arrester 21 is electrically connected with the bus and is used for absorbing overvoltage of a main circuit and preventing overvoltage.
The 1# primary simulation disc 14 and the 2# primary simulation disc 15 respectively display the on/off states of the 1# high-voltage vacuum circuit breaker handcart 10 and the 2# high-voltage vacuum circuit breaker handcart 11.
The two handcarts have mechanical and electrical locking and releasing functions. The two handcarts are provided with matched key sleeve locks 26, and after the matched key sleeve locks 26 are separated from use, and when the auxiliary contacts of the circuit breakers of the two handcarts are electrically interlocked, the cabinet body 1 is in a working state with double output; after the matched key sleeve lock 26 is put into use, when the auxiliary contacts of the two handcart circuit breakers are electrically interlocked, the cabinet is in a common and standby working state.
A vertical partition plate is arranged in the cabinet body 1, the vertical partition plate divides the space in the cabinet body 1 into a front side cavity and a rear side cavity, and the front side cavity is divided into an instrument cavity 2, a No. 1 handcart cavity 3 and a No. 2 handcart cavity 3 from top to bottom; the rear cavity is a bus wiring cavity 4.
Through setting up vertical baffle, vertical baffle is the partition cabinet body 1 firstly, and secondly can be as the installation support basis of relevant part.
Compared with the prior art, the outstanding characteristics are that:
(1) the structure of the cabinet body 1 is designed, so that the two vacuum circuit breaker handcarts are structurally mounted up and down, power distribution can be fed out for two loads respectively, and one vacuum circuit breaker handcart can be used for standby; the two hand trucks are provided with interlocking devices, the interlocking devices are matched key sleeve locks 26, the interlocking devices are in a one-use one-standby state when being switched in, and are in a double-feed-out state when being withdrawn. The interlocking device is matched with the inner plate of the side wall of the cabinet body 1 for use, so that the purpose of mechanical interlocking is achieved.
(2) The high-voltage electrified detection sensor and the alarm device are additionally arranged, and when the load side is electrified after the handcart is switched on, the handcart can send out acousto-optic alarm of 'high-voltage electrified and distance keeping'. The power supply side of the high-voltage live detection sensor is electrically connected with the high-voltage bus, and the load side of the high-voltage live detection sensor is electrically connected with the alarm device; when the high-voltage bus is electrified, the threshold switch action control alarm device sends out acousto-optic alarm of 'high voltage electrified and distance kept'.
(3) Install wiring chamber additional and open the door and jump the electrical protection device and the pronunciation alarm device of last level switch, when someone maloperation opened the wiring chamber, make last level high tension switchgear automatic tripping and send out the warning through electrical protection device, avoided the people's body electric shock accident that the maloperation caused. The electric protection device is an LK-2 travel switch, is electrically connected with a tripping loop of a higher-level high-voltage cabinet and is controlled by the opening and closing state of the cabinet door.
(4) The two handcarts are arranged independently, so that the on/off control and microcomputer protection of the two vacuum circuit breaker handcarts can be realized, and the remote control and near control switching functions are completely independent devices and loops, so that the complete independence of the two handcarts is achieved, the equipment is safer and more reliable, and the maintenance and the repair are convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (1)
1. The utility model provides an integrated high voltage distribution cabinet with double-fed function that goes out, includes the cabinet body, the internal appearance chamber, handcart chamber, the bus connection chamber that is equipped with of cabinet, its characterized in that:
a 1# digital line protection monitoring device, a 2# digital line protection monitoring device, a 1# ammeter, a 2# ammeter and a temperature and humidity controller are arranged in the instrument cavity;
the handcart cavity is provided with a # 1 high-voltage vacuum circuit breaker handcart, a # 2 high-voltage vacuum circuit breaker handcart, a # 1 control and display part, a # 2 control and display part, a # 1 simulation disc, a # 2 simulation disc, an # 1 indoor high-voltage electrified display and an # 2 indoor high-voltage electrified display;
the bus wiring cavity comprises a No. 1 current transformer, a No. 2 current transformer, a No. 1 lightning arrester, a No. 2 lightning arrester, a No. 1 live detection sensor, a No. 2 live detection sensor, a bus, a contact box and an inlet and outlet wire hole;
the two handcarts have mechanical and electrical locking and releasing functions;
a vertical partition plate is arranged in the cabinet body, the vertical partition plate divides the space in the cabinet body into a front side cavity and a rear side cavity, and the front side cavity is divided into an instrument cavity, a No. 1 handcart cavity and a No. 2 handcart cavity from top to bottom; the rear side cavity is a bus wiring cavity;
the No. 1 digital line protection monitoring device is electrically connected with the air switch, and the current measuring terminal and the current protection terminal are electrically connected with the secondary side of the No. 1 current transformer; the voltage measurement and voltage protection terminal is electrically connected with the PT 100V; the input terminal is respectively and electrically connected with a far/near control selection switch and a switching-on/switching-off switch, and the output terminal is electrically connected with a switching-on coil and a tripping coil component of the handcart operating mechanism;
the 2# digital line protection monitoring device is electrically connected with the air switch, and the current measuring terminal and the current protection terminal are electrically connected with the secondary side of the 2# current transformer; the voltage measurement and voltage protection terminal is electrically connected with the PT 100V; the input terminal is electrically connected with the far/near control selection switch and the closing/opening switch respectively, and the output terminal is electrically connected with components of a closing coil and a tripping coil of the handcart operating mechanism;
the 1# ammeter is electrically connected with the secondary side of the 1# current transformer; the connection mode of the 2# ammeter is the same as that of the 1# ammeter;
the temperature and humidity controller is electrically connected with the air switch, the condensation sensor and the heater respectively;
the No. 1 control and display part is electrically connected with the No. 1 digital line protection monitoring device, the No. 1 analog panel is electrically connected with the No. 1 high-voltage vacuum circuit breaker handcart, the No. 1 indoor high-voltage electrified display is electrically connected with the No. 1 electrified detection sensor, the No. 2 control and display part is electrically connected with the No. 2 digital line protection monitoring device, the No. 2 analog panel is electrically connected with the No. 2 high-voltage vacuum circuit breaker handcart, and the No. 2 indoor high-voltage electrified display is electrically connected with the No. 2 electrified detection sensor;
the primary side of the 1# current transformer is connected with a high-voltage bus, the secondary side of the 1# current transformer is electrically connected with the 1# digital line protection monitoring device and the 1# ammeter, the contact box is electrically connected with a handcart main loop contact, the 1# lightning arrester is electrically connected with the bus, the primary side of the 2# current transformer is connected with the high-voltage bus, the secondary side of the 2# current transformer is electrically connected with the 2# digital line protection monitoring device and the 2# ammeter, the contact box is electrically connected with the handcart main loop contact, and the 2# lightning arrester is electrically connected with the bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449929.4U CN216672385U (en) | 2021-06-29 | 2021-06-29 | Integrated high-voltage power distribution cabinet with double-fed-out function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449929.4U CN216672385U (en) | 2021-06-29 | 2021-06-29 | Integrated high-voltage power distribution cabinet with double-fed-out function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216672385U true CN216672385U (en) | 2022-06-03 |
Family
ID=81757291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121449929.4U Expired - Fee Related CN216672385U (en) | 2021-06-29 | 2021-06-29 | Integrated high-voltage power distribution cabinet with double-fed-out function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216672385U (en) |
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2021
- 2021-06-29 CN CN202121449929.4U patent/CN216672385U/en not_active Expired - Fee Related
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