CN109188263A - High voltage isolator alternating current-direct current voltage regulation power supply test operation secondary circuit system - Google Patents
High voltage isolator alternating current-direct current voltage regulation power supply test operation secondary circuit system Download PDFInfo
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- CN109188263A CN109188263A CN201811085734.9A CN201811085734A CN109188263A CN 109188263 A CN109188263 A CN 109188263A CN 201811085734 A CN201811085734 A CN 201811085734A CN 109188263 A CN109188263 A CN 109188263A
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 21
- 230000005611 electricity Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 7
- 238000000819 phase cycle Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 4
- 230000008450 motivation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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- General Physics & Mathematics (AREA)
- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a secondary circuit system for testing operation of an alternating-current and direct-current voltage-regulating power supply of a high-voltage isolating switch, which comprises an alternating-current voltage-regulating module, a direct-current voltage-regulating module, an alternating-current manual opening and closing operation circuit system, a direct-current manual opening and closing operation circuit system, an alternating-current automatic circulation opening and closing operation circuit system, a direct-current automatic circulation opening and closing operation circuit system, an alternating-current operation counting module, a direct-current operation counting module, an alternating-current voltage display module, a direct-current voltage display module, a circuit resistance measuring module and an aviation plug input and output module.
Description
Technical field
The present invention relates to high-voltage switch gear technical field, specifically a kind of high voltage isolator AC/DC voltage regulating power supply test behaviour
Make 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.
Summary of the invention
The purpose of the present invention is to provide a kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit systems
System, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system, including two sets of exchange manual divide-shut brakes
Operation circuit system, two sets of direct current manual divide-shut brake operation circuit systems, two sets of exchange automatic cycle breaking-closing operating circuit systems
System, two sets of direct current automatic cycle breaking-closing operating circuit systems further include AC voltage adjusting module, direct current voltage reulation module, two friendships
Flow operation count module, two DC operation counting modules, alternating voltage display module, DC voltage display module, circuit electricity
Hinder measurement module, aviation plug input/output module, two sets of exchange manual divide-shut brake operation circuit systems, small-sized alternating current interruptions
Device, exchange closing contactor, phase sequence relay, overheat protector, opening button, switch knob, stops at exchange separating brake contactor
Only electric elements composition, two sets of direct currents such as button, exchange separating brake limit switch, exchange combined floodgate limit switch, change-over switch are manual
Breaking-closing operating circuit system is closed a floodgate by the first small-sized DC circuit breaker, the second small-sized DC circuit breaker, separating brake contactor, direct current
The electricity such as contactor, opening button, switch knob, stop button, separating brake limit switch, direct current combined floodgate limit switch, change-over switch
Device element composition, two sets of exchange automatic cycle breaking-closing operating circuit systems, by small-sized AC circuit breaker, exchange separating brake contact
Device, exchange closing contactor, phase sequence relay, overheat protector, start-stop button, exchange separating brake limit switch, exchange are closed a floodgate
The electric elements such as limit switch, change-over switch, opening time relay, closing time relay composition.
As a further solution of the present invention: AC voltage adjusting module includes three-phase electric AC voltage regulator, boost button, drop
Button is pressed, straight voltage regulating module includes DC voltage regulator, adjusting pressuring knob.
As a further solution of the present invention: two sets of direct current automatic cycle breaking-closing operating circuit systems, it is small-sized by first
Dc circuit breaker, the second small-sized DC circuit breaker, separating brake contactor, direct current closing contactor, start-stop button, the limit of direct current separating brake
The electric elements such as switch, direct current combined floodgate limit switch, change-over switch, opening time relay, closing time relay composition.
As a further solution of the present invention: two alternating current operation counting modules are closed a floodgate by exchange separating brake contactor, exchange
Contactor, separating brake counter, combined floodgate counter composition.Two DC operation counting modules are connect by separating brake contactor, direct current combined floodgate
Tentaculum, separating brake counter, combined floodgate counter composition.
As a further solution of the present invention: alternating voltage display module, DC voltage display module are by digital display AC 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, display
Screen, test cartridge composition.
As further scheme of the invention: aviation plug input/output module is by power input Aviation Connector, exchange
Control output Aviation Connector, DC control output Aviation Connector, cable group, network communication interface composition.
Compared with prior art, the beneficial effects of the present invention are: equipment space occupied is small, the set-up time is short, operation and maintenance
It is convenient, and equipment operation high reliablity, maloperation can be avoided completely, in addition to this also there is network communicating function, adapted to modern
Device intelligence requirement, 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 backsight structural representation in high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
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 the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " are only used for description mesh
, it 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 " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to Fig. 1, including two sets of exchange manual divide-shut brake operation circuit systems, 3, two sets of direct current manual divide-shut brake operations
4, two sets of exchange automatic cycle breaking-closing operating circuit systems of circuit system, 5, two sets of direct current automatic cycle breaking-closing operating circuits
System 6 further includes AC voltage adjusting module 1, the DC operation meter of alternating current operation counting module 7, two of direct current voltage reulation module 2, two
Digital-to-analogue block 8, alternating voltage display module 9, DC voltage display module 10, loop resistance measurement module 11, aviation plug input
Output module 12.
Fig. 2-3 is please referred to, AC voltage adjusting module includes three-phase electric AC voltage regulator, boost button 15, is depressured button 16,
Straight voltage regulating module includes DC voltage regulator, adjusting pressuring knob 18 liang of sets exchange manual divide-shut brake operation circuit systems 3, small-sized alternating current interruption
Device 19, exchange separating brake contactor 20, exchange closing contactor 21, phase sequence relay 22, overheat protector, opening button 24,
The electric appliances members such as switch knob 25, stop button 26, exchange separating brake limit switch, exchange combined floodgate limit switch 28, change-over switch 29
Part composition, two sets of direct current manual divide-shut brake operation circuit systems 4 are by the first small-sized DC circuit breaker 30, the open circuit of the second small-sized DC
Device 31, separating brake contactor 32, direct current closing contactor 33, opening button 34, switch knob 35, stop button 36, separating brake limit
The electric elements such as switch, direct current combined floodgate limit switch, change-over switch 39 composition, two sets of exchange automatic cycle breaking-closing operating circuits
System 5, by small-sized AC circuit breaker 19, exchange separating brake contactor 20, exchange closing contactor 21, phase sequence relay 22, hot mistake
Carry protector, start-stop button 40, exchange separating brake limit switch, exchange combined floodgate limit switch 28, change-over switch 29, opening time after
The electric elements such as electric appliance 41, closing time relay 42 composition, two sets of direct current automatic cycle breaking-closing operating circuit systems 6, by
First small-sized DC circuit breaker 30, the second small-sized DC circuit breaker 31, separating brake contactor 32, direct current closing contactor 33, start and stop
Button 43, direct current separating brake limit switch, direct current combined floodgate limit switch, change-over switch 39, opening time relay 44, closing time
The equal electric elements composition of relay 45, two alternating current operation counting modules are by exchange separating brake contactor 20, exchange closing contactor
21, separating brake counter 46, combined floodgate counter 47 form.
Fig. 4-6 is please referred to, two DC operation counting modules are by separating brake contactor 32, direct current closing contactor 33, separating brake
Counter 48, combined floodgate counter 49 form, and alternating voltage display module, DC voltage display module are by digital display AC voltage and current
Table 50, digital display DC volometer 51 form, loop resistance measurement module by circuit resistance tester, data line, display screen,
Test cartridge composition, aviation plug input/output module is by power input Aviation Connector, exchange control output Aviation Connector, direct current
Control output Aviation Connector, cable group 59, network communication interface group.
Working principle: first by the power input Aviation Connector of aviation plug input/output module by cable group with exchange
The connection of 0V power supply.Exchange control output Aviation Connector is connect by cable group with disconnecting switch AC electrical mechanism.Direct current control
System output Aviation Connector is connect by cable group with disconnecting switch direct current drive mechanism.Communication and the communication of remote operation open network
Interface connection.Miniature circuit breaker final vacuum fan is closed to radiate to cabinet.It adjusts and hands over by boost button 15, decompression button 16
The rated output alternating voltage for flowing pressure regulator watches the voltage value of digital display AC volometer 50, minimum voltage behaviour when adjusting
When making, voltage is adjusted to the 85% of voltage rating, when ceiling voltage operates, voltage is adjusted to the 110% of voltage rating.
Manual brake separating operation is exchanged, closes small-sized AC circuit breaker 19, when closing operation, change-over switch 29 is got into " hand
Dynamic operation " gear, presses switch knob 25, and exchange 21 coil of closing contactor energization is attracted normally open contact closure and connects alternating current
Motivation operates clockwise carries out closing operation, encounters combined floodgate limit switch when ac motor and disconnects control power supply, exchange is closed a floodgate
21 coil losing electricity of contactor disconnects ac motor and completes making process.When exchanging closing by hand operation, opening button is pressed
24, exchange 20 coil of separating brake contactor energization actuation normally open contact closure connection ac motor operates counterclockwise carries out separating brake behaviour
Make, encounters separating brake limit switch when ac motor and disconnect control power supply, exchange 20 coil losing electricity of separating brake contactor, disconnect exchange
Motor completes separating brake process.If you need to emergency stop during divide-shut brake, stop button 26 is pressed.
Automatic cycle closing operation is exchanged, closes small-sized AC circuit breaker 19, when closing operation, change-over switch 29 is got to
" automatic cycle operation " gear, presses automatic cycle start-stop button 43, and 42 energization normal opened contact of closing time relay closure connects
Logical exchange 21 coil of closing contactor, which is powered to being attracted normally open contact closure and connect ac motor and operate clockwise, carries out combined floodgate behaviour
Make, while auxiliary switch shaft being driven to rotate clockwise, the auxiliary switch normal opened contact when high voltage isolator is close to closing position
Closure connects opening time relay 41 and is powered, and encounters combined floodgate limit switch when ac motor and disconnects control power supply, exchange is closed
21 coil losing electricity of lock contactor disconnects ac motor and completes making process.41 conduction time of opening time relay, which reaches, to be set
After determining number of seconds, 41 normally opened contact of opening time relay closure connects exchange 20 coil of separating brake contactor energization and is attracted normally opened touching
Head closure connects ac motor and operates progress sub-switching operation counterclockwise, while auxiliary switch shaft being driven to rotate counterclockwise, and works as height
Auxiliary switch normal opened contact is closed when pressing disconnecting switch close to open position, is connected closing time relay 42 and is powered, works as exchange
Motor encounters separating brake limit switch and disconnects control power supply, exchanges 20 coil losing electricity of separating brake contactor, it is complete to disconnect ac motor
At separating brake process.After 42 conduction time of closing time relay reaches setting number of seconds, exchange 21 coil of closing contactor, which is powered, to be inhaled,
Continuous automatic cycle operation, every circulate operation is primary, and separating brake counter 46, combined floodgate counter 47 respectively count primary.If you need to stop
Start-stop button 43 is pressed in operation, disconnects power supply.The rated output direct current of DC voltage regulator is adjusted by adjusting pressuring knob 18
Pressure watches the voltage value of digital display DC volometer 51 when adjusting and voltage is adjusted to voltage rating when minimum voltage operates
85%, when ceiling voltage operates, voltage is adjusted to the 110% of voltage rating.Export DC voltage range: DC0 ~ 250V.
The operation of direct current manual brake separating, power turn-on the first small-sized DC circuit breaker 30, the second small-sized DC circuit breaker 31 close
When lock operates, change-over switch 39 is got into " manual operation " gear, presses switch knob 35,33 coil of direct current closing contactor is logical
Electricity is attracted normally open contact closure connection dc motor and operates progress closing operation clockwise, when dc motor encounters combined floodgate limit
Bit switch disconnects control power supply, and 33 coil losing electricity of direct current closing contactor disconnects dc motor and completes making process.Direct current
When closing by hand operates, opening button 34 is pressed, 32 coil of separating brake contactor is powered and is attracted normally open contact closure connection direct current
Motivation operates counterclockwise carries out sub-switching operation, encounters separating brake limit switch when dc motor and disconnects control power supply, separating brake contact
32 coil losing electricity of device disconnects ac motor and completes separating brake process.If you need to emergency stop during divide-shut brake, stop button 36 is pressed i.e.
It can.
Direct current automatic cycle closing operation, power turn-on the first small-sized DC circuit breaker 30, the second small-sized DC circuit breaker
31, when closing operation, change-over switch 39 is got into " automatic cycle operation " gear, presses automatic cycle start-stop button 43, closed a floodgate
45 energization normal opened contact of time relay closure is connected 33 coil of direct current closing contactor energization actuation normally open contact closure and is connected
Dc motor operates clockwise carries out closing operation, while auxiliary switch shaft being driven to rotate clockwise, and works as high voltage isolator
Auxiliary switch normal opened contact is closed when close to closing position, is connected opening time relay 44 and is powered, when dc motor is encountered
Combined floodgate limit switch disconnects control power supply, and 33 coil losing electricity of direct current closing contactor disconnects dc motor and completes making process.
After 44 conduction time of opening time relay reaches setting number of seconds, 44 normally opened contact of opening time relay closure connects separating brake
The energization of 32 coil of contactor is attracted normally open contact closure connection dc motor and operates progress sub-switching operation counterclockwise, drives simultaneously
Auxiliary switch shaft rotates counterclockwise, and when high voltage isolator is close to open position, auxiliary switch normal opened contact is closed, and connects and closes
The lock time relay 45 is powered, and encounters separating brake limit switch when dc motor and disconnects control power supply, 32 coil of separating brake contactor
Power loss disconnects dc motor and completes separating brake process.After 45 conduction time of closing time relay reaches setting number of seconds, direct current is closed
33 coil of lock contactor, which is powered, to be attracted, and continuous automatic cycle operation, every circulate operation is primary, and separating brake counter 48, closing a floodgate counts
Device 49 respectively counts primary.If you need to stop operation, start-stop button is pressed, disconnects power supply.Measure the leading electricity of high voltage isolator
Partial circuit resistance, open by circuit resistance tester power supply, connection data line, by two test cartridges be clipped in respectively high pressure every
It leaves and closes on the connecting terminal of main current-carrying part both ends, press testing button, observe the resistance value on display screen.Intelligent high-pressure every
It leaves and closes AC/DC voltage regulating power supply and test operation integrated system, connect by network interface with computer, various test items
Voltage, electric current, power, operating characteristic waveform, loop resistance data transmission in mesh to computer carry out data analysis, processing and
Storage.
Claims (7)
1. a kind of high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system, including two sets of manual divisions of exchange
Lock operation circuit system (3), two sets of direct current manual divide-shut brake operation circuit systems (4), two sets of exchange automatic cycle divide-shut brake behaviour
Make circuit system (5), two sets of direct current automatic cycle breaking-closing operating circuit systems (6), which is characterized in that further include AC voltage adjusting
Module (1), direct current voltage reulation module (2), two alternating current operation counting modules (7), two DC operation counting modules (8), exchange
Voltage display module (9), DC voltage display module (10), loop resistance measurement module (11), aviation plug input and output mould
Block (12), two sets of exchange manual divide-shut brake operation circuit systems (3), small-sized AC circuit breaker (19), exchange separating brake contactor
(20), closing contactor (21), phase sequence relay (22), overheat protector, opening button (24), switch knob are exchanged
(25), the electric appliances member such as stop button (26), exchange separating brake limit switch, exchange combined floodgate limit switch (28), change-over switch (29)
Part composition, two sets of direct current manual divide-shut brake operation circuit systems (4) are by the first small-sized DC circuit breaker (30), the second small-sized DC
Breaker (31), direct current closing contactor (33), opening button (34), switch knob (35), stops pressing separating brake contactor (32)
The electric elements such as button (36), separating brake limit switch, direct current combined floodgate limit switch, change-over switch (39) composition, two sets of exchanges are automatic
It recycles breaking-closing operating circuit system (5), is closed a floodgate and connect by small-sized AC circuit breaker (19), exchange separating brake contactor (20), exchange
Tentaculum (21), phase sequence relay (22), overheat protector, start-stop button (40), exchange separating brake limit switch, exchange are closed a floodgate and are limited
The electric elements such as bit switch (28), change-over switch (29), opening time relay (41), closing time relay (42) composition.
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, boost button (15), decompression button (16), straight pressure regulation
Module (2) includes DC voltage regulator, 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, two sets of direct current automatic cycle breaking-closing operating circuit systems (6), by the first small-sized DC circuit breaker (30), second small
Type dc circuit breaker (31), separating brake contactor (32), direct current closing contactor (33), start-stop button (43), the limit of direct current separating brake
The electricity such as switch, direct current combined floodgate limit switch, change-over switch (39), opening time relay (44), closing time relay (45)
Device element composition.
4. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system, feature according to claim
It is, two alternating current operation counting modules are by exchange separating brake contactor (20), exchange closing contactor (21), separating brake counter
(46), combined floodgate counter (47) forms；Two DC operation counting modules are by separating brake contactor (32), direct current closing contactor
(33), separating brake counter (48), combined floodgate counter (49) composition.
5. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 4, 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 made of circuit resistance tester, data line, display screen, test cartridge.
7. high voltage isolator AC/DC voltage regulating power supply test operation secondary circuit system according to claim 1, aviation
Plug input/output module (12) exports aviation by power input Aviation Connector, exchange control output Aviation Connector, DC control
Connector, cable group (59), network communication interface composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085734.9A CN109188263B (en) | 2018-09-18 | 2018-09-18 | High-voltage isolating switch AC/DC voltage regulation power supply test operation secondary circuit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085734.9A CN109188263B (en) | 2018-09-18 | 2018-09-18 | High-voltage isolating switch AC/DC voltage regulation power supply test operation secondary circuit system |
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| CN109188263A true CN109188263A (en) | 2019-01-11 |
| CN109188263B CN109188263B (en) | 2024-03-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596579A (en) * | 2019-08-30 | 2019-12-20 | 上海西电高压开关有限公司 | Running-in test device and circuit of gas insulated metal-enclosed switch |
| CN112002593A (en) * | 2020-08-28 | 2020-11-27 | 贵州电网有限责任公司 | Disconnecting switch operating mechanism with modular control loop design and use method |
| 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 |
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