CN106371012B - Breaker test fixture operating means - Google Patents
Breaker test fixture operating means Download PDFInfo
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- CN106371012B CN106371012B CN201610928684.0A CN201610928684A CN106371012B CN 106371012 B CN106371012 B CN 106371012B CN 201610928684 A CN201610928684 A CN 201610928684A CN 106371012 B CN106371012 B CN 106371012B
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- 238000012360 testing method Methods 0.000 title claims abstract description 84
- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000011990 functional testing Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 230000005284 excitation Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- 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
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a breaker testing tool operating device, and belongs to the technical field of testing devices. The invention solves the problem of manual opening and closing in the functional test process of the circuit breaker, improves the test efficiency and the test precision, and ensures the work safety. The invention comprises a circuit breaker installation fixing part and an automatic opening and closing adjusting part, wherein the circuit breaker installation fixing part comprises a fixing bottom plate and a connecting contact; the connecting contact is used for connecting the wiring terminal of the tested breaker with the input and output signal wires of external equipment. The automatic opening and closing adjusting part comprises a fixed vertical plate, a fixed flat plate, a stepping motor and a transmission device; the stepping motor drives the breaker pulling piece on the transmission device to finish automatic opening and closing operation of the tested breaker sample. The invention is suitable for function test, trip test, opening and closing test and the like of the charge control circuit breaker, and has the characteristics of easy configuration, simple operation and the like, and has wide market prospect.
Description
Technical Field
The invention relates to an automatic clamp for testing a circuit breaker, in particular to an operation device for a testing tool of a cost-control circuit breaker, and belongs to the technical field of testing devices.
Background
The low-voltage circuit breaker is a common protection electrical appliance, is one of important protection and control elements in the piezoelectric device, and is widely applied to industrial and mining enterprises, high-rise buildings, modern residential areas and locomotives and subway systems. The circuit breaker has fault protection functions such as overcurrent, reverse current, short circuit, undervoltage and the like, can be used for protecting AC/DC electrical equipment, can be used in a circuit which is not operated or converted frequently, and is an indispensable switching element of the circuit and a system.
At present, an external circuit breaker (charge control circuit breaker) of an intelligent electric energy meter is widely used in a low-voltage power grid user metering box, and serious consequences can be caused when the circuit breaker is excessively long, excessively short or inconsistent in three phases. According to related test requirements in the existing miniature circuit breakers of national standards GB10963, GB/T14048.1 and the like, instantaneous and time-delay action characteristic test is required for the miniature circuit breaker with rated current of 1-125 amperes. The circuit breaker to be tested is usually placed on a special test tool mechanism for testing, and the traditional test tool mechanism is used for manually completing switching-on and switching-off of the circuit breaker to be tested, so that the problems of low efficiency, potential safety hazard and the like are caused. Therefore, an automatic breaker testing tool operating device is developed, the testing efficiency and the testing precision are improved, and the working safety is guaranteed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the breaker testing tool operating device, which solves the problems of low efficiency, potential safety hazard and the like caused by manual opening and closing in the functional testing process of the breaker, improves the testing efficiency and the testing precision, and ensures the working safety.
In order to solve the technical problems, the breaker testing tool operating device comprises a breaker installation fixing part and an automatic opening and closing adjusting part, wherein the breaker installation fixing part comprises a fixing bottom plate and a connecting contact, the connecting contact is arranged above the fixing bottom plate, and the connecting contact is used for connecting a tested breaker wiring terminal with input and output signal wires of external equipment; the automatic opening and closing adjusting part comprises a fixed vertical plate, a fixed flat plate, a motor and a transmission device, wherein the fixed vertical plate is connected with the fixed bottom plate through a first adjustable device, the fixed flat plate is connected with the fixed vertical plate through a second adjustable device, the motor is arranged on the fixed vertical plate, the transmission device is arranged on the fixed flat plate, and the motor is connected with the transmission device and drives the transmission device to work. The transmission device comprises a connecting rod vertical rod, a driving shaft rod, a driving roller, a belt, a driven roller and a circuit breaker pulling sheet; the driving roller is connected with the motor, the driven roller is connected with the driving shaft lever, and the driving roller drives the driven roller through a belt; the connecting rod vertical rod arranged on the fixed flat plate is provided with an inner hole, the driving shaft rod penetrates through the inner hole of the connecting rod vertical rod, and the driving shaft rod can freely rotate; the drive shaft lever is connected with the circuit breaker poking piece. The motor is provided with a programmable controller.
And two ends of the driving shaft lever are provided with a pair of first fixing piles for keeping the driving shaft lever stable in position in the testing process.
The circuit breaker installation fixed part is provided with a telescopic spring rod, and the telescopic spring rod is arranged on the fixed bottom plate and used for pressing the tested circuit breaker.
And two ends of the telescopic spring rod are provided with a pair of second fixing piles for reinforcing and fixing the telescopic spring rod.
The first adjustable device can be flexibly opened and closed, and is convenient for the separation and combination of the installation fixing part and the automatic opening and closing adjusting part of the circuit breaker.
The invention selects the stepping motor, and can quickly respond to the signal excitation of the system.
The fixed vertical plate and the fixed flat plate are connected through the second adjustable device, so that the circuit breaker testing device is suitable for testing circuit breakers of different specifications and types.
The telescopic spring rod is used for fixing the tested circuit breaker and effectively supporting the testing work of circuit breakers of different specifications and types.
The programmable controller can automatically control the stepping motor according to the instruction in the test process, and plays roles of intelligent switching on/off and protecting the tested circuit breaker.
The stepping motor of the key component of the automatic opening and closing adjusting part can drive the driving shaft lever to work through the driving roller and the belt according to the instruction, so that the breaker poking piece connected with the driving shaft lever drives the tested breaker to complete the automatic opening and closing action. The invention has the advantages of simple structure, convenient operation, high working efficiency and automation degree, capability of replacing manual completion of the switching-on and switching-off operation of the tested circuit breaker, and the like, and has the functions of improving the testing working efficiency, protecting the tested circuit breaker and the like.
Drawings
FIG. 1 is a block diagram of the present invention;
In fig. 1: 1. the circuit breaker comprises a fixed bottom plate, an insulating plate, a connecting contact, a second fixed pile, a telescopic spring rod, a first fixed pile, a circuit breaker pulling sheet, a connecting rod vertical rod, a stepping motor, a driving roller, a belt, a driving shaft rod, a fixed vertical plate and a fixed flat plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Example 1:
Referring to fig. 1, the embodiment mainly comprises a circuit breaker installation fixing portion and an automatic opening and closing adjusting portion, wherein the circuit breaker installation fixing portion is connected with the automatic opening and closing adjusting portion through a first fixing device. The circuit breaker installation fixed part comprises a fixed bottom plate 1, a connecting contact 3, a telescopic spring rod 5 and a second fixed pile 4. Wherein the connecting contact 3 is a pair of metal columns and is arranged above the fixed bottom plate 1; on one hand, the circuit breaker terminal is connected with external leads for inputting and outputting signals, and on the other hand, the circuit breaker terminal has the function of fixing the tested circuit breaker. The second fixing piles 4 are a pair of metal elements with holes, are installed at both ends of the telescopic spring rod 5, and fix the telescopic spring rod 5 to the fixing base plate 1. The automatic opening and closing adjusting part comprises a first fixed pile 6, a breaker pulling sheet 7, a connecting rod vertical rod 8, a stepping motor 9, a driving roller 10, a belt 11, a driving shaft lever 12, a fixed vertical plate 13 and a fixed flat plate 14. Wherein the fixed vertical plate 13 is vertically fixed at the edge of the fixed bottom plate 1 through a first adjustable device, and the fixed flat plate 14 is horizontally fixed at one side of the fixed vertical plate 13 near the test station through a second adjustable device. The stepping motor 9 is arranged on one side of the fixed vertical plate 13, which is close to the test station; the stepping motor 9 is provided with a driving roller 10, and one side of a driving shaft lever 12 is provided with a driven roller; the driving roller 10 is connected with a driven roller of the driving shaft lever 12 through a belt 11, the driving shaft lever 12 horizontally penetrates through an inner hole of the connecting rod vertical rod 8, and the driving shaft lever 12 can freely rotate; the connecting rod vertical rod 8 is fixed on the fixed flat plate 14; the first fixing piles 6 are a pair of metal elements with holes, and are installed at two ends of the driving shaft rod 12 to keep the driving shaft rod 12 stable in position during testing. The circuit breaker poking piece 7 is connected with the driving shaft lever 12, and the driving shaft lever 12 controls the switching-on and switching-off of the tested circuit breaker through the circuit breaker poking piece 7; the stepping motor 9 is connected with a programmable controller PLC.
The working flow of the invention is as follows: firstly, according to the specification and model of the tested breaker, the width of the telescopic spring rod 5 and the height of the fixed flat plate 14 are adjusted so that the tested breaker is just put into a testing station; and according to the movement range of the opening and closing of the tested breaker, the working ranges of the stepping motor 9 and the breaker poking piece 7 are adjusted. The tested breaker is in a breaking state, and a breaking and closing part of the tested breaker is connected with a breaker poking plate 7 of the invention; and writing the test working parameters into program instructions on a computer, and importing the program instructions into a programmable controller PLC. The wiring terminal of the tested breaker and the wires for inputting and outputting signals of the external test equipment are inserted into the connecting contact 3 and fixed, and the telescopic spring rod 5 clamps the tested breaker. The test work starts, the stepping motor 9 is powered on, and the stepping motor 9 drives the driven roller of the driving shaft lever 12 through the driving roller 10 and the belt 11 according to the instruction of the programmable logic controller PLC, so that the driving shaft lever rotates according to the instruction; the drive shaft lever 12 rotates according to the instruction to drive the breaker poking plate 7, and the breaker poking plate 7 drives the opening and closing part of the tested breaker according to the instruction to complete the automatic opening and closing action of the tested breaker. The excitation signal of the external equipment is transmitted to the tested breaker through the input signal wire, and the test information of the tested breaker is transmitted to the external equipment through the output signal wire; and the external equipment judges whether the test result is qualified or not according to the comparison of the preset parameters and the obtained test signals of the tested breaker, and records the test information of each tested sample to the external equipment memory. If the tested sample is unqualified in the testing process, the invention can not break the brake of the tested breaker in the set time, and the stepping motor 9 automatically completes the sample breaking action after the set testing time is finished after receiving the instruction transmitted by the external equipment so as to ensure the normal testing of the next sample.
Example 2:
Referring to fig. 1, the embodiment mainly comprises a circuit breaker installation fixing portion and an automatic opening and closing adjusting portion, wherein the circuit breaker installation fixing portion is connected with the automatic opening and closing adjusting portion through a first fixing device. The circuit breaker installation fixed part comprises a fixed bottom plate 1, an insulating plate 2, a connecting contact 3, a telescopic spring rod 5 and a second fixed pile 4. The insulating plate 2 is arranged between the fixed bottom plate 1 and the connecting contact 3, plays a role in preventing the electric leakage of the whole breaker testing tool mechanism, and ensures the safety of testing work. The connecting contact 3 is a pair of metal columns, which are used for connecting the wiring terminal of the circuit breaker with the external wires for inputting and outputting signals on one hand and for fixing the circuit breaker to be tested on the other hand. The second fixing piles 4 are a pair of metal elements with holes, are installed at both ends of the telescopic spring rod 5, and fix the telescopic spring rod 5 to the fixing base plate 1. The automatic opening and closing adjusting part comprises a first fixed pile 6, a breaker pulling sheet 7, a connecting rod vertical rod 8, a stepping motor 9, a driving roller 10, a belt 11, a driving shaft lever 12, a fixed vertical plate 13 and a fixed flat plate 14. Wherein the fixed vertical plate 13 is vertically fixed at the edge of the fixed bottom plate 1 through a first adjustable device, and the fixed flat plate 14 is horizontally fixed at one side of the fixed vertical plate 13 near the test station through a second adjustable device. The stepping motor 9 is arranged on one side of the fixed vertical plate 13, which is close to the test station; the stepping motor 9 is provided with a driving roller 10, and one side of a driving shaft lever 12 is provided with a driven roller; the driving roller 10 is connected with a driven roller of the driving shaft lever 12 through a belt 11, the driving shaft lever 12 horizontally penetrates through an inner hole of the connecting rod vertical rod 8, and the driving shaft lever 12 can freely rotate; the connecting rod vertical rod 8 is fixed on the fixed flat plate 14; the first fixing piles 6 are a pair of metal elements with holes, and are installed at two ends of the driving shaft rod 12 to keep the driving shaft rod 12 stable in position during testing. The circuit breaker poking piece 7 is connected with the driving shaft lever 12, and the driving shaft lever 12 controls the switching-on and switching-off of the tested circuit breaker through the circuit breaker poking piece 7; the stepping motor 9 is connected with a programmable controller PLC.
The working flow of the invention is as follows: firstly, according to the specification and model of the tested breaker, the width of the telescopic spring rod 5 and the height of the fixed flat plate 14 are adjusted so that the tested breaker is just put into a testing station; and according to the movement range of the opening and closing of the tested breaker, the working ranges of the stepping motor 9 and the breaker poking piece 7 are adjusted. The tested breaker is in a breaking state, and a breaking and closing part of the tested breaker is connected with a breaker poking plate 7 of the invention; and writing the test working parameters into program instructions on a computer, and importing the program instructions into a programmable controller PLC. The wiring terminal of the tested breaker and the wires for inputting and outputting signals of the external test equipment are inserted into the connecting contact 3 and fixed, and the telescopic spring rod 5 clamps the tested breaker. The test work starts, the stepping motor 9 is powered on, and the stepping motor 9 drives the driven roller of the driving shaft lever 12 through the driving roller 10 and the belt 11 according to the instruction of the programmable logic controller PLC, so that the driving shaft lever rotates according to the instruction; the drive shaft lever 12 rotates according to the instruction to drive the breaker poking plate 7, and the breaker poking plate 7 drives the opening and closing part of the tested breaker according to the instruction to complete the automatic opening and closing action of the tested breaker. The excitation signal of the external equipment is transmitted to the tested breaker through the input signal wire, and the test information of the tested breaker is transmitted to the external equipment through the output signal wire; and the external equipment judges whether the test result is qualified or not according to the comparison of the preset parameters and the obtained test signals of the tested breaker, and records the test information of each tested sample to the external equipment memory. If the tested sample is unqualified in the testing process, the invention can not break the brake of the tested breaker in the set time, and the stepping motor 9 automatically completes the sample breaking action after the set testing time is finished after receiving the instruction transmitted by the external equipment so as to ensure the normal testing of the next sample.
Example 3:
Referring to fig. 1, the embodiment mainly comprises a circuit breaker installation fixing portion and an automatic opening and closing adjusting portion, wherein the circuit breaker installation fixing portion is connected with the automatic opening and closing adjusting portion through a first adjustable device. The circuit breaker installation fixed part comprises a fixed bottom plate 1, an insulating plate 2, a connecting contact 3, a telescopic spring rod 5 and a second fixed pile 4. The insulating plate 2 is arranged between the fixed bottom plate 1 and the connecting contact 3, plays a role in preventing the electric leakage of the whole breaker testing tool mechanism, and ensures the safety of testing work. The connecting contact 3 is a pair of metal columns, which are used for connecting the wiring terminal of the circuit breaker with the external wires for inputting and outputting signals on one hand and for fixing the circuit breaker to be tested on the other hand. The second fixing piles 4 are two pairs of metal elements with holes, are respectively arranged at two ends of the two telescopic spring rods 5, and fix the two telescopic spring rods 5 on the fixing bottom plate 1. The automatic opening and closing adjusting part comprises a first fixed pile 6, a breaker pulling sheet 7, a connecting rod vertical rod 8, a stepping motor 9, a driving roller 10, a belt 11, a driving shaft lever 12, a fixed vertical plate 13 and a fixed flat plate 14. Wherein the fixed vertical plate 13 is vertically fixed at the edge of the fixed bottom plate 1 through a first adjustable device, and the fixed flat plate 14 is horizontally fixed at one side of the fixed vertical plate 13 near the test station through a second adjustable device. The stepping motor 9 is arranged on one side of the fixed vertical plate 13, which is close to the test station; the stepping motor 9 is provided with a driving roller 10, and one side of a driving shaft lever 12 is provided with a driven roller; the driving roller 10 is connected with a driven roller of the driving shaft lever 12 through a belt 11, the driving shaft lever 12 horizontally penetrates through an inner hole of the connecting rod vertical rod 8, and the driving shaft lever 12 can freely rotate; the connecting rod vertical rod 8 is fixed on the fixed flat plate 14; the first fixing piles 6 are a pair of metal elements with holes, and are installed at two ends of the driving shaft rod 12 to keep the driving shaft rod 12 stable in position during testing. The circuit breaker poking piece 7 is connected with the driving shaft lever 12, and the driving shaft lever 12 controls the switching-on and switching-off of the tested circuit breaker through the circuit breaker poking piece 7; the stepper motor 9 is connected with a digital signal processor DSP.
The working flow of the invention is as follows: firstly, according to the specification and model of the tested breaker, the width of the two telescopic spring rods 5 and the height of the fixed flat plate 14 are adjusted so that the tested breaker is just placed into a testing station; and according to the movement range of the opening and closing of the tested breaker, the working ranges of the stepping motor 9 and the breaker poking piece 7 are adjusted. The tested breaker is in a breaking state, and a breaking and closing part of the tested breaker is connected with a breaker poking plate 7 of the invention; the test working parameters are written into program instructions on a computer and are imported into a digital signal processor DSP. The wiring terminal of the tested breaker and the wires for inputting and outputting signals of the external test equipment are inserted into the connecting contact 3 and fixed, and the two telescopic spring rods 5 clamp the tested breaker. The test work starts, the stepping motor 9 is powered on, and the stepping motor 9 drives the driven roller of the driving shaft lever 12 through the driving roller 10 and the belt 11 according to the instruction of the digital signal processor DSP, so that the driving shaft lever rotates according to the instruction; the drive shaft lever 12 rotates according to the instruction to drive the breaker poking plate 7, and the breaker poking plate 7 drives the opening and closing part of the tested breaker according to the instruction to complete the automatic opening and closing action of the tested breaker. The excitation signal of the external equipment is transmitted to the tested breaker through the input signal wire, and the test information of the tested breaker is transmitted to the external equipment through the output signal wire; and the external equipment judges whether the test result is qualified or not according to the comparison of the preset parameters and the obtained test signals of the tested breaker, and records the test information of each tested sample to the external equipment memory. If the tested sample is unqualified in the testing process, the invention can not break the brake of the tested breaker in the set time, and the stepping motor 9 automatically completes the sample breaking action after the set testing time is finished after receiving the instruction transmitted by the external equipment so as to ensure the normal testing of the next sample.
The invention has the technical effects that: through preset, the stepping motor automatically controls the opening and closing actions of the circuit breaker through the switch toggle plate, so that the testing rate is remarkably improved; the relative positions of the components are adjustable, so that the testing work of circuit breakers with different specifications and models is effectively supported; the telescopic spring rod is used for positioning the sample, positioning errors on the operation station are corrected, the position of the sample in the operation station is ensured to be uniform, and the leakage error detection rate caused by manual opening and closing is effectively reduced. The invention is especially suitable for the instantaneous and time delay test of the charge control circuit breaker, has the advantages of reasonable structure, good precision, low cost, high efficiency and the like, has wide market and has good economic and social benefits.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (3)
1. The breaker testing tool operating device comprises a breaker installation fixing part and an automatic opening and closing adjusting part, and is characterized in that the breaker installation fixing part comprises a fixing bottom plate and a connecting contact, wherein the connecting contact is arranged above the fixing bottom plate, and the connecting contact is used for connecting a tested breaker wiring terminal with input and output signal wires of external equipment; the automatic opening and closing adjusting part comprises a fixed vertical plate, a fixed flat plate, a motor and a transmission device, wherein the fixed vertical plate is connected with the fixed bottom plate through a first adjustable device, the fixed flat plate is connected with the fixed vertical plate through a second adjustable device, the motor is arranged on the fixed vertical plate, the transmission device is arranged on the fixed flat plate, and the motor is connected with the transmission device and drives the transmission device to work;
the transmission device comprises a connecting rod vertical rod, a driving shaft rod, a driving roller, a belt, a driven roller and a circuit breaker pulling sheet; the driving roller is connected with the motor, the driven roller is connected with the driving shaft lever, and the driving roller drives the driven roller through a belt; the connecting rod vertical rod arranged on the fixed flat plate is provided with an inner hole, the driving shaft rod penetrates through the inner hole of the connecting rod vertical rod, and the driving shaft rod can freely rotate; the drive shaft lever is connected with the circuit breaker poking piece;
The motor is a stepping motor and is provided with a programmable controller;
The circuit breaker installation fixed part is provided with a telescopic spring rod, and the telescopic spring rod is arranged on the fixed bottom plate and used for pressing the tested circuit breaker.
2. The breaker testing tool operating device according to claim 1, wherein a pair of first fixing piles are arranged at two ends of the driving shaft lever, and the first fixing piles are used for keeping the driving shaft lever stable in position during testing.
3. The breaker testing tool operating device according to claim 1, wherein a pair of second fixing piles are arranged at two ends of the telescopic spring rod for reinforcing and fixing the telescopic spring rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928684.0A CN106371012B (en) | 2016-10-31 | 2016-10-31 | Breaker test fixture operating means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928684.0A CN106371012B (en) | 2016-10-31 | 2016-10-31 | Breaker test fixture operating means |
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| CN106371012A CN106371012A (en) | 2017-02-01 |
| CN106371012B true CN106371012B (en) | 2024-05-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307836B (en) * | 2017-07-26 | 2020-09-04 | 浙江丰源电器配件有限公司 | Detection method of detection device based on circuit breaker characteristics |
| CN107870299B (en) * | 2017-10-12 | 2020-03-31 | 温州大学 | Detection device and detection method for tripping mechanism of molded case circuit breaker |
| CN109100544B (en) * | 2018-08-22 | 2021-02-26 | 广东理工职业学院 | Frame type energy storage clamp for circuit breaker |
| CN111289889B (en) * | 2020-02-21 | 2022-05-31 | 国网山东省电力公司莱芜供电公司 | Breaker electric leakage opening performance detection device |
| CN111947906A (en) * | 2020-08-10 | 2020-11-17 | 广西电网有限责任公司电力科学研究院 | GIS opening and closing coil's action life test system |
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