CN209247978U - A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system - Google Patents
A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system Download PDFInfo
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- CN209247978U CN209247978U CN201821522934.1U CN201821522934U CN209247978U CN 209247978 U CN209247978 U CN 209247978U CN 201821522934 U CN201821522934 U CN 201821522934U CN 209247978 U CN209247978 U CN 209247978U
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- 238000005259 measurement Methods 0.000 claims abstract description 8
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- 230000001012 protector Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 description 15
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Abstract
The utility model discloses a kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit systems, including AC voltage adjusting module, direct current voltage reulation module, exchange manual divide-shut brake operation circuit system, direct current manual divide-shut brake operation circuit system, exchange automatic cycle breaking-closing operating circuit system, direct current automatic cycle breaking-closing operating circuit system, alternating current operation counting module, DC operation counting module, alternating voltage display module, DC voltage display module, loop resistance measurement module, aviation plug input/output module, the utility model device space occupied is small, set-up time is short, operation and maintenance are convenient, and equipment operation high reliablity, maloperation can be avoided completely, in addition to this also there is network communicating function, adapt to modern comfort intelligent requirements, it is multiple functional, integrated level is high, use scope is extensive.
Description
Technical field
The utility model relates to high-voltage switch gear technical field, specifically a kind of high voltage isolator AC/DC voltage regulating power supply examination
Test operation secondary circuit system.
Background technique
Currently, domestic high-voltage switch gear service work and debugging efforts need to prepare alternating current depressor, DC voltage regulator, counting
The electrical parts such as device, ammeter, voltmeter, the time relay, loop resistance measurement instrument, and the distribution of each element is more messy, occupies
Each element need to be connected with each other by space, when use with conducting wire, after being finished and need to remove connecting wire, by each component and conducting wire
Vanning is arranged, is worked pretty troublesome time-consuming.
A kind of Intelligent high-pressure disconnecting switch AC/DC voltage regulating power supply and test operation integrated system secondary circuit are now developed,
Including AC voltage adjusting module, direct current voltage reulation module, two sets of exchange manual divide-shut brake operation circuit systems, two sets of manual divisions of direct current
Lock operation circuit system, two sets of exchanges are from Animal Circulation breaking-closing operating circuit system, two sets of direct currents from Animal Circulation divide-shut brake
Operation circuit system, two alternating current operation counting modules, two alternating current operation counting modules, alternating voltage display module, direct current
Voltage display module, Aviation Connector output module.
Intelligent high-pressure disconnecting switch AC/DC voltage regulating power supply and test operation integrated system secondary circuit, can same time control
Make two AC electrical operating mechanisms, two direct current drive operating mechanisms.It can be manually operated, it also can be from Animal Circulation divide-shut brake
Operation.
Utility model content
The purpose of this utility model is to provide a kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary returnings
Road system, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions:
A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system, including AC voltage adjusting module,
Direct current voltage reulation module, exchange manual divide-shut brake operation circuit system, direct current manual divide-shut brake operation circuit system, exchange follow automatically
Ring breaking-closing operating circuit system, direct current automatic cycle breaking-closing operating circuit system, alternating current operation counting module, DC operation
Counting module, alternating voltage display module, DC voltage display module, loop resistance measurement module, aviation plug input and output
Module, two sets of exchange manual divide-shut brake operation circuit systems are closed a floodgate by miniature circuit breaker QF3, the first separating brake contactor, first and are connect
Tentaculum, phase sequence relay, overheat protector, the first opening button, the first switch knob, the first stop button, the first separating brake
The electric elements such as limit switch, the first combined floodgate limit switch, the first change-over switch composition, two sets of direct current manual divide-shut brakes operate back
Road system is pressed by miniature circuit breaker QF4, miniature circuit breaker QF5, the second separating brake contactor, the second closing contactor, the second separating brake
Button, the second switch knob, the second stop button, the second separating brake limit switch, the second combined floodgate limit switch, second change-over switch etc.
Electric elements composition, two sets of exchange automatic cycle breaking-closing operating circuit systems are by miniature circuit breaker QF2, miniature circuit breaker
QF3, the first separating brake contactor, the first closing contactor, phase sequence relay, overheat protector, the first start-stop button, first point
Lock limit switch, the first combined floodgate limit switch, the first change-over switch, the first opening time relay, the first closing time relay
The electric elements such as device composition.
As a further solution of the present invention: AC voltage adjusting module include three-phase electric AC voltage regulator, boosting by
Button, decompression button, straight voltage regulating module include DC voltage regulator, adjusting pressuring knob.
As a further solution of the present invention: direct current automatic cycle breaking-closing operating circuit system is by miniature circuit breaker
QF4, miniature circuit breaker QF5, the second separating brake contactor, the second closing contactor, the second start-stop button, the limit of the second separating brake are opened
The electric appliances such as pass, the second combined floodgate limit switch, the second change-over switch, the second opening time relay, the second closing time relay
Element composition.
As a further solution of the present invention: two alternating current operation counting modules are by the first separating brake contactor, first
Closing contactor, the first separating brake counter, the first combined floodgate counter composition, two DC operation counting modules are connect by the second separating brake
Tentaculum, the second closing contactor, the second separating brake counter, the second combined floodgate counter composition.
As a further solution of the present invention: alternating voltage display module, DC voltage display module are handed over by digital display
Galvanic electricity volt-ammeter, digital display DC volometer composition.
As a further solution of the present invention: loop resistance measurement module is by circuit resistance tester, data line, aobvious
Display screen, test cartridge composition.
As a further solution of the present invention, aviation plug input/output module by power input Aviation Connector,
Exchange control output Aviation Connector, DC control export Aviation Connector, cable group, network communication interface group.
Compared with prior art, the utility model has the beneficial effects that equipment space occupied is small, the set-up time is short, operation
It is easy to maintain, and equipment operation high reliablity, maloperation can be avoided completely, in addition to this also there is network communicating function, adapted to
Modern comfort intelligent requirements, multiple functional, integrated level is high, and use scope is extensive.
Detailed description of the invention
Fig. 1 is the system module schematic diagram of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system.
Fig. 2 is alternating current operating loop circuit in high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system
Figure.
Fig. 3 is DC control circuit circuit in high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system
Figure.
Fig. 4 is that the structure of operation panel in high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system is shown
It is intended to.
Fig. 5 is that the structure of display panel in high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system is shown
It is intended to.
Fig. 6 is the backsight structural representation of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " are only used for
Purpose is described, is not understood to indicate or imply and faces ground importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to Fig. 1, including AC voltage adjusting module 1, direct current voltage reulation module 2, exchange manual divide-shut brake operation circuit system
3, direct current manual divide-shut brake operation circuit system 4, exchange automatic cycle breaking-closing operating circuit system 5, direct current automatic cycle point
Closing operation circuit system 6, alternating current operation counting module 7, DC operation counting module 8, alternating voltage display module 9, direct current
Voltage display module 10, loop resistance measurement module 11, aviation plug input/output module 12, AC voltage adjusting module 1 include three
Mutually electronic AC voltage regulator 14, boost button 15, decompression button 16, straight voltage regulating module 2 include DC voltage regulator 17, adjusting pressuring knob
18。
Fig. 2-3 is please referred to, AC voltage adjusting module 1 includes three-phase electric AC voltage regulator 14, boost button 15, decompression button
16, straight voltage regulating module 2 includes DC voltage regulator 17, adjusting pressuring knob 18, and two sets of exchange manual divide-shut brake operation circuit systems 3 are by small-sized
Circuit breaker Q F319, the first separating brake contactor 20, the first closing contactor 21, phase sequence relay 22, overheat protector 23,
One opening button 24, the first switch knob 35, the first stop button 26, the first separating brake limit switch 27, first close a floodgate to limit and open
The electric elements such as the 28, first change-over switch 29 composition is closed, two sets of direct current manual divide-shut brake operation circuit systems 4 are by miniature circuit breaker
QF430, miniature circuit breaker QF531, the second separating brake contactor 32, the second closing contactor 33, the second opening button 34, second are closed
Lock button 35, the second stop button 36, the second separating brake limit switch 37, the second combined floodgate limit switch 38, the second change-over switch 39
Equal electric elements composition, two sets of exchange automatic cycle breaking-closing operating circuit systems 5 are by miniature circuit breaker QF2, miniature circuit breaker
QF319, the first separating brake contactor 20, the first closing contactor 21, phase sequence relay 22, overheat protector 23, the first start and stop
Button 40, the first separating brake limit switch 27, the first combined floodgate limit switch 28, the first change-over switch 29, the first opening time relay
The electric elements such as device 41, the first closing time relay 42 composition, direct current automatic cycle breaking-closing operating circuit system 6 is by small-sized
Circuit breaker Q F430, miniature circuit breaker QF531, the second separating brake contactor 32, the second closing contactor 33, the second start-stop button 43,
Second separating brake limit switch 37, the second combined floodgate limit switch 38, the second change-over switch 39, the second opening time relay 44,
The equal electric elements composition of two closing time relays 45, two alternating current operation counting modules 7 are by the first separating brake contactor 20, first
Closing contactor 21, the first separating brake counter 46, the first combined floodgate counter 47 composition.
Please refer to Fig. 4-5, two DC operation counting modules 8 by the second separating brake contactor 32, the second closing contactor 33,
Second separating brake counter 48, the second combined floodgate counter 49 composition, alternating voltage display module 9, DC voltage display module 10 by
Digital display AC volometer 50, digital display DC volometer 51 form, and loop resistance measurement module 11 is surveyed by loop resistance
It tries instrument 52, data line 53, display screen 54, test cartridge 55 to form, aviation plug input/output module 12 is by power input aviation
Connector 56, exchange control output Aviation Connector 57, DC control export Aviation Connector 58, cable group 59, network communication interface
74 groups.
Working principle: the power input Aviation Connector 56 of aviation plug input/output module 12 is first passed through into cable group 59
It is connect with exchange 380V power supply.Exchange control output Aviation Connector 57 passes through cable group 59 and disconnecting switch AC electrical mechanism
Connection.DC control output Aviation Connector 58 is connect by cable group 59 with disconnecting switch direct current drive mechanism.It communicates and remote
Side's operation open network communication interface 74 connects.70 final vacuum of miniature circuit breaker, 71 pairs of cabinets of fan are closed to radiate.Pass through boosting
Button 15, decompression button 16 adjust the rated output alternating voltage of AC voltage regulator 14, viewing digital display AC voltage electricity when adjusting
Voltage when minimum voltage operates, is adjusted to the 85% of voltage rating, when ceiling voltage operates, by voltage by the voltage value of flow table 50
It is adjusted to the 110% of voltage rating.
Exchange manual brake separating operation, power turn-on miniature circuit breaker QF2, miniature circuit breaker QF19, when closing operation, by the
One change-over switch 29 gets to " manual operation " gear, presses the first switch knob 35, and 21 coil of the first closing contactor, which is powered, to be inhaled
It closes normally open contact closure connection ac motor and operates progress closing operation clockwise, when ac motor encounters the first combined floodgate limit
Bit switch 28 disconnects control power supply, and 21 coil losing electricity of the first closing contactor disconnects ac motor and completes making process.Exchange
When closing by hand operates, the first opening button 24 is pressed, the energization of 20 coil of the first separating brake contactor is attracted normally open contact closure and connects
Indirect current motivation operates counterclockwise carries out sub-switching operation, encounters the first separating brake limit switch 27 when ac motor and disconnects control
Power supply processed, 20 coil losing electricity of the first separating brake contactor disconnect ac motor and complete separating brake process.If you need to urgency during divide-shut brake
Stop, presses the first stop button 26.
Exchange automatic cycle closing operation, power turn-on miniature circuit breaker QF2, miniature circuit breaker QF319, closing operation
When, the first change-over switch 29 is got into " automatic cycle operation " gear, presses the second start-stop button of automatic cycle 43-1, first closes
42 energization normal opened contact of lock time relay closure is connected 21 coil of the first closing contactor energization actuation normally open contact closure and is connect
Indirect current motivation operates clockwise carries out closing operation, while auxiliary switch 73-1 axis being driven to rotate clockwise, when high pressure every
Auxiliary switch 73-1 normal opened contact is closed when leaving pass close to closing position, is connected the first opening time relay 41 and is powered, when
Ac motor encounters the first combined floodgate limit switch 28 and disconnects control power supply, and 21 coil losing electricity of the first closing contactor is disconnected and being handed over
Galvanic electricity motivation completes making process.After 41 conduction time of first opening time relay reaches setting number of seconds, the first opening time
41 normally opened contact of relay closure connects 20 coil of the first separating brake contactor energization actuation normally open contact closure and connects AC electrical
Machine operates counterclockwise carries out sub-switching operation, while auxiliary switch 73-1 axis being driven to rotate counterclockwise, when high voltage isolator is close
Auxiliary switch 73-1 normal opened contact is closed when open position, is connected the first closing time relay 42 and is powered, works as ac motor
Encounter the first separating brake limit switch 27 and disconnect control power supply, it is complete to disconnect ac motor for 20 coil losing electricity of the first separating brake contactor
At separating brake process.After 42 conduction time of first closing time relay reaches setting number of seconds, 21 coil of the first closing contactor is logical
Electricity is inhaled, and continuous automatic cycle operation, every circulate operation is primary, and the first separating brake counter 46, the first combined floodgate counter 47 respectively count
Once.If you need to stop operation, the second start-stop button 43-1 is pressed, disconnects power supply.Direct current tune is adjusted by adjusting pressuring knob 18
The rated output DC voltage of depressor 17 watches the voltage value of digital display DC volometer 51, minimum voltage operation when adjusting
When, voltage is adjusted to the 85% of voltage rating, when ceiling voltage operates, voltage is adjusted to the 110% of voltage rating.Export direct current
Voltage range: DC0~250V.
The operation of direct current manual brake separating, power turn-on miniature circuit breaker QF30, miniature circuit breaker QF431 will when closing operation
Second change-over switch 39 gets to " manual operation " gear, presses the second switch knob 35, and 33 coil of the second closing contactor is powered
It is attracted normally open contact closure connection dc motor and operates progress closing operation clockwise, when dc motor encounters the second combined floodgate
Limit switch 38 disconnects control power supply, and 33 coil losing electricity of the second closing contactor disconnects dc motor and completes making process.Directly
When flowing closing by hand operation, the second opening button 34 is pressed, 32 coil of the second separating brake contactor is powered and is attracted normally open contact closure
It connects dc motor and operates progress sub-switching operation counterclockwise, encounter the second separating brake limit switch 37 when dc motor and disconnect control
Power supply processed, 32 coil losing electricity of the second separating brake contactor disconnect ac motor and complete separating brake process.If you need to urgency during divide-shut brake
Stop, presses the second stop button 36.
Direct current automatic cycle closing operation, power turn-on miniature circuit breaker QF430, miniature circuit breaker QF531, closing operation
When, the second change-over switch 39 is got into " automatic cycle operation " gear, presses the second start-stop button of automatic cycle 43-2, second closes
45 energization normal opened contact of lock time relay closure is connected 33 coil of the second closing contactor energization actuation normally open contact closure and is connect
Logical dc motor operates clockwise carries out closing operation, while auxiliary switch 73-2 axis being driven to rotate clockwise, when high pressure every
Auxiliary switch 73-2 normal opened contact is closed when leaving pass close to closing position, is connected the second opening time relay 44 and is powered, when
Dc motor encounters the second combined floodgate limit switch 38 and disconnects control power supply, and 33 coil losing electricity of the second closing contactor disconnects straight
Galvanic electricity motivation completes making process.After 44 conduction time of second opening time relay reaches setting number of seconds, the second opening time
44 normally opened contact of relay closure connects 32 coil of the second separating brake contactor energization actuation normally open contact closure and connects direct current drive
Machine operates counterclockwise carries out sub-switching operation, while auxiliary switch 73-2 axis being driven to rotate counterclockwise, when high voltage isolator is close
Auxiliary switch 73-2 normal opened contact is closed when open position, is connected the second closing time relay 45 and is powered, works as dc motor
Encounter the second separating brake limit switch 37 and disconnect control power supply, it is complete to disconnect dc motor for 32 coil losing electricity of the second separating brake contactor
At separating brake process.After 45 conduction time of second closing time relay reaches setting number of seconds, 33 coil of the second closing contactor is logical
Electricity is attracted, and continuous automatic cycle operation, every circulate operation is primary, and the second separating brake counter 48, the second combined floodgate counter 49 are respectively counted
Number is primary.If you need to stop operation, the second start-stop button 43-2 is pressed, disconnects power supply.Measure the leading electricity of high voltage isolator
Partial circuit resistance is opened by 52 power supply of circuit resistance tester, connection data line 53, two test cartridges 55 is clipped in respectively
On the main current-carrying part both ends connecting terminal of high voltage isolator, testing button is pressed, observes the resistance value on display screen 54.Intelligence
Type high voltage isolator AC/DC voltage regulating power supply and test operation integrated system, are connect by network interface 74 with computer,
Voltage, electric current, power, operating characteristic waveform, loop resistance data transmission in various pilot projects carry out data to computer
Analysis, processing and storage.
Claims (7)
1. a kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system, which is characterized in that including exchange
Voltage regulating module (1), direct current voltage reulation module (2), exchange manual divide-shut brake operation circuit system (3), the operation of direct current manual divide-shut brake
Circuit system (4), exchange automatic cycle breaking-closing operating circuit system (5), direct current automatic cycle breaking-closing operating circuit system
(6), alternating current operation counting module (7), DC operation counting module (8), alternating voltage display module (9), DC voltage are shown
Module (10), loop resistance measurement module (11), aviation plug input/output module (12), two sets of exchange manual divide-shut brake operations
Circuit system (3) is by miniature circuit breaker QF3 (19), the first separating brake contactor (20), the first closing contactor (21), phase sequence
Device (22), overheat protector (23), the first opening button (24), the first switch knob (25), the first stop button (26),
The electric elements such as one separating brake limit switch (27), the first combined floodgate limit switch (28), the first change-over switch (29) composition, two sets straight
Manual divide-shut brake operation circuit system (4) are flowed to be contacted by miniature circuit breaker QF4 (30), miniature circuit breaker QF5 (31), the second separating brake
Device (32), the second closing contactor (33), the second opening button (34), the second switch knob (35), the second stop button (36),
The electric elements such as the second separating brake limit switch (37), the second combined floodgate limit switch (38), the second change-over switch (39) composition, two sets
Exchange automatic cycle breaking-closing operating circuit system (5) is connect by miniature circuit breaker QF2, miniature circuit breaker QF3 (19), the first separating brake
Tentaculum (20), the first closing contactor (21), phase sequence relay (22), overheat protector (23), the first start-stop button (40),
First separating brake limit switch (27), the first combined floodgate limit switch (28), the first change-over switch (29), the first opening time relay
(41), the electric elements such as first closing time relay (42) form.
2. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 1, special
Sign is that AC voltage adjusting module (1) includes three-phase electric AC voltage regulator (14), boost button (15), is depressured button (16), directly
Voltage regulating module (2) includes DC voltage regulator (17), adjusting pressuring knob (18).
3. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 2, special
Sign is that direct current automatic cycle breaking-closing operating circuit system (6) is by miniature circuit breaker QF4 (30), miniature circuit breaker QF5
(31), the second separating brake contactor (32), the second closing contactor (33), the second start-stop button (43), the second separating brake limit switch
(37), when the second combined floodgate limit switch (38), the second change-over switch (39), the second opening time relay (44), second are closed a floodgate
Between the electric elements composition such as relay (45).
4. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 3, special
Sign is that two alternating current operation counting modules (7) are by the first separating brake contactor (20), the first closing contactor (21), first point
Lock counter (46), the first combined floodgate counter (47) composition, two DC operation counting modules (8) are by the second separating brake contactor
(32), the second closing contactor (33), the second separating brake counter (48), the second combined floodgate counter (49) composition.
5. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 1, special
Sign is that alternating voltage display module (9), DC voltage display module (10) are by digital display AC volometer (50), digital display
DC voltage and current table (51) composition.
6. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 1, special
Sign is that loop resistance measurement module (11) is by circuit resistance tester (52), data line (53), display screen (54), test clip
Head (55) composition.
7. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 1, special
Sign is that aviation plug input/output module (12) is by power input Aviation Connector (56), exchange control output Aviation Connector
(57), DC control output Aviation Connector (58), cable group (59), network communication interface (74) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821522934.1U CN209247978U (en) | 2018-09-18 | 2018-09-18 | A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821522934.1U CN209247978U (en) | 2018-09-18 | 2018-09-18 | A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247978U true CN209247978U (en) | 2019-08-13 |
Family
ID=67517992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821522934.1U Active CN209247978U (en) | 2018-09-18 | 2018-09-18 | A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791344A (en) * | 2021-11-17 | 2021-12-14 | 西安西电高压开关有限责任公司 | Switching test loop and method for switching current of high-voltage isolating switch |
-
2018
- 2018-09-18 CN CN201821522934.1U patent/CN209247978U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791344A (en) * | 2021-11-17 | 2021-12-14 | 西安西电高压开关有限责任公司 | Switching test loop and method for switching current of high-voltage isolating switch |
| CN113791344B (en) * | 2021-11-17 | 2022-06-28 | 西安西电高压开关有限责任公司 | Switching test loop and method for switching current of high-voltage isolating switch |
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