CN106405412A - Breaker feature test loading platform - Google Patents
Breaker feature test loading platform Download PDFInfo
- Publication number
- CN106405412A CN106405412A CN201611067021.0A CN201611067021A CN106405412A CN 106405412 A CN106405412 A CN 106405412A CN 201611067021 A CN201611067021 A CN 201611067021A CN 106405412 A CN106405412 A CN 106405412A
- Authority
- CN
- China
- Prior art keywords
- lifting
- moving contact
- lower moving
- cylinder
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to a breaker feature test loading platform. The breaker feature test loading platform comprises a rack, an upper contact mechanism and a lower moving contact mechanism; the lower moving contact mechanism includes a lower moving contact mechanism and a lower moving contact mechanism flexible driving assembly; the rack is provided with a lifting loading platform consisting of a lifting putting plate and a lifting driving device configured to drive the lifting of the lifting putting plate; the lifting putting plate is slidingly moved and cooperated with the rack through a guide rail; the rack is provided with an abdication through hole configured to allow the lower moving contact to retract to the back side of the lifting track of the lifting putting plate, and the abdication through hole is extended along the vertical direction; and the lower moving contact can perform lifting movement along the abdication through hole, the lower moving contact mechanism also includes a lower moving contact lifting driving assembly configured to drive the lower moving contact to lift along the abdication through hole, and the lower moving contact has a first position which is declined to stagger the tail end of the lifting stroke of the lifting putting plate and a second position which is lifted to the position corresponding to the tail end of the lifting stroke of the lifting putting plate. The breaker feature test loading platform has the lifting structure design, is convenient to assemble and disassemble the breaker and is reliable in electric contact.
Description
Technical field
The present invention relates to circuit breaker testing equipment connects and in particular to being used for fixed installation on circuit breaker testing equipment with conductive
The breaker loading stage connecing.
Background technology
Low-voltage circuit breaker is the key element of protection low-voltage distribution backbone network, safe and reliable to guarantee low voltage power distribution network
Operation has very important significance, and extensively applies in low-voltage distribution backbone network.Work in order to ensure low-voltage circuit breaker can
By property it is necessary to strict Test And Checkout be carried out to its all technical before product export.Existing circuit breaker characteristic test
Breaker loading fixture structure design on stand is unreasonable, there is the dismounting inconvenience of breaker and makes electrical contact with unreliable etc. lacking
Fall into.
Content of the invention
Objects of the present invention：For overcoming the defect of prior art presence, the present invention provides one kind to have lifting structure and sets
Meter, breaker loading, unloading are convenient and the reliable circuit breaker characteristic of electrical contact tests loading stage.
For achieving the above object, the invention provides following technical scheme：
A kind of circuit breaker characteristic tests loading stage, and including organic frame, frame is provided with electrically connect with breaker connecting terminal upper
Contact mechanism and lower moving contact mechanism, upper contact head mechanism includes the upper clamping contact that front conductive end is in 7 fonts, lower moving contact machine
Structure includes the lower moving contact that front conductive end is in 7 fonts, and lower moving contact is in that elastic sliding coordinates in frame, the frame back side
Be provided with drive lower moving contact lower moving contact telescopic drive assembly it is characterised in that：Described frame is provided with liftable
Lifting loading stage, lifting loading stage includes the lifting placing breaker for positioning and shelves plate and drive lifting to shelve plate liter
The lifting drive of fall, lifting is shelved plate and is coordinated in frame through guide rail sliding, described frame has for lower moving contact contracting
Shelve the resigning through hole on rear side of plate lifting track to lifting, resigning through hole extends longitudinally, and lower moving contact can be along resigning through hole liter
Fall activity, described lower moving contact mechanism also includes and drives lower moving contact to lift driving group along the lower moving contact that resigning through hole lifts
Part, described lower moving contact have dropping to stagger lifting shelve the primary importance of plate upward stroke end and rise to and lift
Shelve the second place of plate upward stroke end correspondence position.
By adopting technique scheme, when breaker is tested, lifting is shelved plate and is dropped to the convenient open circuit of extreme lower position
Device load, now lower moving contact drop to primary importance and be reduced to lifting shelve plate lifting track on rear side of, it is to avoid lower moving contact pair
Lifting is shelved plate shape and is become to stop, lifting drive drives the lifting carrying breaker to shelve plate and rises to moving contact machine afterwards
Structure correspondence position, goes up that moving contact stretches out and rise to the second place again and breaker is clamped ensureing that electrical contact can afterwards
Lean on；The automatic lifting realizing breaker loads, and facilitates breaker assembly or disassembly from testboard, provides operating efficiency；Simultaneously
Lower moving contact liftable and scalable design, both reached lower moving contact lifting is shelved plate resigning it is ensured that breaker it is automatic
The lifting loading stage design that lifting loads, and under the design of the liftable of moving contact, by the regulation of stroke, can reach lower dynamic
Contact is more preferable to carry out corresponding with breaker so that electrical contact is reliable.
Preferably, described frame has the positioning leaning against positioning for breaker and lean against face, described positioning leans against face
Setting, positioning leans against the horizontal side in face and is provided with the retaining rail guidance tape laterally abutting positioning for breaker, and retaining rail guidance tape is along vertical
To extension, described lifting is shelved plate and is provided with limited bayonet, and lifting shelves on plate limited bayonet location fit in retaining rail guidance tape
On, lifting shelves plate located bayonet socket sliding guiding cooperation on retaining rail guidance tape.Under this structure design, its structure is simple, and
Make positioning reliability and the lifting of breaker reliable, avoid lifting to shelve plate stress excessive simultaneously.
Preferably, described lifting drive includes the first lift cylinder and the second lift cylinder, the first lift cylinder
Cylinder arm is shelved plate with lifting and is fixedly connected, and described second lift cylinder is fixedly mounted in frame, the gas of the second lift cylinder
Cylinder arm is provided with portable plate, and portable plate coordinates through guide rail in frame along longitudinal slip, and described first lift cylinder is fixing to pacify
It is contained on portable plate.Under this structure design, realize, using double cylinders, the lifting driving that plate is shelved in lifting, be capable of more accurately may be used
The position adjustments leaned on, it is ensured that breaker loading puts in place, improve equipment functional reliability, lifting drive structure is simple, action
Reliable.
Preferably, described lower moving contact lifting drive component includes installing rack, the 3rd lift cylinder and the 4th lifting air
Cylinder, described installing rack lifting sliding coordinates in frame, and installing rack is connected with the cylinder arm of the 3rd lift cylinder, described 4th liter
Sending down abnormally ascending cylinder is fixedly mounted in frame, and the cylinder arm of the 4th lift cylinder is connected and has lifting support, and lifting support lifting is slided
Move cooperation in frame, described 3rd lift cylinder is fixedly mounted on lifting support, described lower moving contact telescopic drive assembly
It is arranged on installing rack, lower moving contact is can be matched with installing rack along elastic sliding thus being constituted the machine that is indirectly slidably fitted in
On frame.Under this structure design, overall structure is neatly compact, reaches the lifting action of lower moving contact using double cylinder engine, can be real
Now the fine setting of the lifting action of big stroke and little stroke is so that lower moving contact position is more accurately and reliably it is ensured that equipment works
Reliable.
Preferably, described lower moving contact telescopic drive assembly includes the first telescopic cylinder, the second telescopic cylinder and activity
Seat, described sliding seat is coordinated on described installing rack with sliding type along the longitudinal direction, and the first telescopic cylinder is fixedly mounted on work
On dynamic seat, the cylinder arm of the first telescopic cylinder is fixedly connected with installing rack, and described second telescopic cylinder is fixedly mounted on sliding seat
On, the cylinder arm of the second telescopic cylinder is provided with fixed plate, and described lower moving contact is fixedly connected with fixed plate, described sliding seat
It is provided with lower contact positioning pilot hole seat, lower moving contact slide-and-guide coordinates in the positioning pilot hole of lower contact positioning pilot hole seat.Should
Under structure design, overall structure is simply compact, using double air cylinder driven lower moving contact expanding-contracting actions, controls more accurately and reliably,
Guarantee equipment reliable operation.
Preferably, described upper clamping contact is assemblied in frame in the way of can stretching along in front and back's sliding, upper clamping contact
It is connected with and drives its flexible upper contact head drive component, upper contact head drive component includes installing plate, and lower clamping contact is fixedly connected
On a mounting board, the two ends of installing plate are respectively connected with upper contact head telescopic drive cylinder, and upper contact head telescopic drive cylinder is fixed on machine
On frame, the cylinder arm of upper contact head telescopic drive cylinder is fixedly connected with installing plate.Under this structure design, upper clamping contact adopts can
Flexible activity setting, more reliable with the conductive contact of breaker.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description
Fig. 1 shows for specific embodiment of the invention circuit breaker characteristic test structure under lower moving contact resigning state for the loading stage
It is intended to；
Fig. 2 for the specific embodiment of the invention circuit breaker characteristic test loading stage lifting shelve plate be located at upward stroke end and under
Moving contact is located at structural representation during primary importance；
Fig. 3 for the specific embodiment of the invention circuit breaker characteristic test loading stage lifting shelve plate be located at upward stroke end and under
Moving contact is located at the structural representation during second place；
Fig. 4 is specific embodiment of the invention lower moving contact mechanism structure schematic diagram；
Fig. 5 is specific embodiment of the invention upper contact head mechanism structure schematic diagram；
Fig. 6 lifts loading stage structural representation for the specific embodiment of the invention.
Specific embodiment
As shown in Figures 1 to 6, a kind of circuit breaker characteristic disclosed by the invention tests loading stage, including organic frame 1, in frame 1
It is provided with the upper contact head mechanism 2 electrically connecting with breaker 9 binding post 91 and lower moving contact mechanism 3, upper contact head mechanism 2 includes front portion
Conducting end is in the upper clamping contact 21 of 7 fonts, and lower moving contact mechanism 3 includes the lower moving contact 31 that front conductive end is in 7 fonts, under
Moving contact 31 is in that elastic sliding coordinates in frame 1, and frame 1 back side is provided with and drives the lower moving contact of lower moving contact 31 to stretch
Contracting drive component, described frame 1 is provided with liftable lifting loading stage 4, and lifting loading stage 4 includes to be placed for positioning
The lifting of breaker 9 is shelved plate 41 and drives lifting to shelve the lifting drive of plate 41 lifting, and lifting shelves plate 41 through leading
Rail sliding coordinates in frame 1, described frame 1 has be reduced to for lower moving contact 31 to lift and shelves on rear side of plate 41 lifting track
Resigning through hole 11, resigning through hole 11 extends longitudinally, and lower moving contact 31 can be along resigning through hole 11 lifting activity, described lower moving contact
Mechanism 3 also includes and drives lower moving contact 31 to lift drive component along the lower moving contact that resigning through hole 11 lifts, described lower dynamic tactile
31 have and dropping to lifting of staggering and shelve the primary importance of plate 41 upward stroke end and rise to and shelve plate 41 with lifting
The second place of upward stroke end correspondence position.
When breaker is tested, lifting is shelved plate 41 and is dropped to extreme lower position and facilitates breaker 9 to load, now lower moving contact
31 drop to primary importance and be reduced to lifting shelve plate 41 lifting track on rear side of（As shown in Figure 1）, it is to avoid lower moving contact 31 is to liter
Fall is shelved plate 41 and is formed and stops；Lifting drive drives the lifting carrying breaker 9 to shelve plate 41 and rises to dynamic touching afterwards
Head mechanism 2 correspondence position (as shown in Figure 2), goes up that moving contact 31 stretches out and rise to the second place again and breaker 9 enters afterwards
Row clamping ensures that electrical contact is reliable（As shown in Figure 3）；The automatic lifting realizing breaker loads, and facilitates breaker from testboard
Assembly or disassembly, provides operating efficiency；Lower moving contact liftable and scalable design simultaneously, had both reached lower moving contact and lifting had been put
Put the resigning of plate it is ensured that the lifting loading stage that its automatic lifting of breaker loads designs, and under the design of the liftable of moving contact,
By the regulation of stroke, can reach lower moving contact preferably carry out with breaker corresponding so that electrical contact reliably.
Wherein, described frame 1 has the positioning leaning against positioning for breaker 9 and lean against face 12, described positioning leans against face 12
It is obliquely installed, positioning leans against the horizontal side in face 12 and is provided with the retaining rail guidance tape 13 laterally abutting positioning for breaker 9, trapped orbit
Plate 13 along Longitudinal extending, shelve plate 41 and be provided with limited bayonet 411 by described lifting, and limited bayonet 411 on plate 41 is shelved in lifting
On retaining rail guidance tape 13, lifting shelves plate 41 located bayonet socket 411 sliding guiding cooperation in retaining rail guidance tape 13 to location fit
On.Under this structure design, its structure is simple, and makes the positioning reliability of breaker and lifting reliable, avoids lifting to put simultaneously
Put plate stress excessive.And spacing convex shoulder 131 is provided with retaining rail guidance tape 13, spacing convex shoulder 131 and lifting are shelved plate 41 and are stopped
Keep off spacing cooperation, play that lifting is shelved with plate lifting position is spacing.
Described lifting drive includes the first lift cylinder 42 and the second lift cylinder 43, the gas of the first lift cylinder 42
Cylinder arm is shelved plate 41 with lifting and is fixedly connected, and described second lift cylinder 43 is fixedly mounted in frame 1, the second lift cylinder 43
Cylinder arm be provided with portable plate 44, portable plate 44 coordinates through guide rail in frame 1 along longitudinal slip, described first lifting air
Cylinder 42 is fixedly mounted on portable plate 44.Under this structure design, realize, using double cylinders, the lifting driving that plate is shelved in lifting, can
Realize more reliable position adjustments and, it is ensured that breaker loading puts in place, improve equipment functional reliability, lifting drive is tied
Structure is simple, reliable in action.Firmly install and make compact overall structure for making lifting shelve plate, be wherein used for installation activity plate
44 guide rail has two, is separately positioned on the end positions of portable plate 44 length direction, and this guide rail shelves plate 41 cunning with lifting
Dynamic rail mark overlaps, and shelves plate 41 for lifting and assembles.
In this specific embodiment, described lower moving contact lifting drive component include installing rack 32, the 3rd lift cylinder 33 with
And the 4th lift cylinder 34, described installing rack 32 lifting sliding coordinates in frame 1, installing rack 32 and the 3rd lift cylinder 33
Cylinder arm connects, and described 4th lift cylinder 34 is fixedly mounted in frame 1, and the cylinder arm of the 4th lift cylinder 34 is connected
There is lifting support 35, lifting support 35 lifting sliding coordinates in frame 1, and described 3rd lift cylinder 33 is fixedly mounted on lifting
On support 35, described lower moving contact 31 telescopic drive assembly is arranged on installing rack 32, and lower moving contact 31 is with can be along elastic
Sliding is matched with installing rack 32 and is indirectly slidably fitted in frame 1 thus constituting.Overall structure is neatly compact, is set using double cylinders
Meter reaches the lifting action of lower moving contact, can achieve the lifting action of big stroke and the fine setting of little stroke so that lower moving contact
Position is more accurately and reliably it is ensured that equipment reliable operation.
Described lower moving contact telescopic drive assembly includes the first telescopic cylinder 36, the second telescopic cylinder 37 and sliding seat
38, described sliding seat 38 coordinates on described installing rack 32 with sliding type along the longitudinal direction, the fixing peace of the first telescopic cylinder 36
It is contained in sliding seat 38, sliding seat 38 length direction two ends are equipped with first telescopic cylinder 36, the first telescopic cylinder 36
Cylinder arm is fixedly connected with installing rack 32, and described second telescopic cylinder 37 is fixedly mounted in sliding seat 38, the second telescopic cylinder
37 cylinder arm is provided with fixed plate 39, and the length direction two ends of fixed plate 39 are equipped with second telescopic cylinder 37, described
Lower moving contact 31 is fixedly connected with fixed plate 39, and described sliding seat 38 is provided with lower contact positioning pilot hole seat 381, lower moving contact
31 slide-and-guides coordinate in the positioning pilot hole of lower contact positioning pilot hole seat 381.Under this structure design, overall structure is simply tight
Gather, using the first telescopic cylinder and the setting of the second telescopic cylinder, moving contact expanding-contracting action controls more accurately and reliably it is ensured that equipment
Reliable operation.
In addition, described upper clamping contact 21 is assemblied in frame 1 in the way of can stretching along in front and back's sliding, upper clamping contact
21 are connected with the upper contact head drive component driving it to stretch, and upper contact head drive component includes installing plate 22, and lower clamping contact 21 is solid
Surely it is connected on installing plate 22, the two ends of installing plate 22 are respectively connected with upper contact head telescopic drive cylinder 23, upper contact head telescopic drive
Cylinder 23 is fixed in frame 1, and the cylinder arm of upper contact head telescopic drive cylinder 23 is fixedly connected with installing plate 22.This structure design
Under, upper clamping contact adopts telescopic activity setting, more reliable with the conductive contact of breaker.
Claims (6)
1. a kind of circuit breaker characteristic tests loading stage, and including organic frame, frame is provided with and is electrically connected with breaker connecting terminal
Upper contact head mechanism and lower moving contact mechanism, upper contact head mechanism includes the upper clamping contact that front conductive end is in 7 fonts, lower moving contact
Mechanism includes the lower moving contact that front conductive end is in 7 fonts, and lower moving contact is in that elastic sliding coordinates in frame, and frame is carried on the back
Face be provided with drive lower moving contact lower moving contact telescopic drive assembly it is characterised in that：Described frame is provided with liftable
Lifting loading stage, lifting loading stage include for positioning place breaker lifting shelves plate and drive lifting shelve plate
The lifting drive of lifting, lifting is shelved plate and is coordinated in frame through guide rail sliding, described frame has and supplies lower moving contact
It is reduced to and lifts the resigning through hole shelved on rear side of plate lifting track, resigning through hole extends longitudinally, and lower moving contact can be along resigning through hole
Lifting activity, described lower moving contact mechanism also includes and drives lower moving contact to drive along the lower moving contact lifting that resigning through hole lifts
Assembly, described lower moving contact have dropping to stagger lifting shelve the primary importance of plate upward stroke end and rise to and rise
Fall shelves the second place of plate upward stroke end correspondence position.
2. according to claim 1 circuit breaker characteristic test loading stage it is characterised in that：Have in described frame and supply breaker
The positioning leaning against positioning leans against face, and described positioning leans against face and is obliquely installed, and positioning leans against the horizontal side in face and is provided with for breaker side
To the retaining rail guidance tape against positioning, retaining rail guidance tape along Longitudinal extending, shelve plate and be provided with limited bayonet by described lifting, rises
Fall shelves limited bayonet location fit on plate, and, on retaining rail guidance tape, lifting shelves plate located bayonet socket sliding guiding cooperation solid
On orbit determination guidance tape.
3. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described lifting drive bag
Include the first lift cylinder and the second lift cylinder, the cylinder arm of the first lift cylinder is shelved plate with lifting and is fixedly connected, described
Two lift cylinders are fixedly mounted in frame, and the cylinder arm of the second lift cylinder is provided with portable plate, and portable plate is vertical through guide rail edge
Coordinate in frame to slip, described first lift cylinder is fixedly mounted on portable plate.
4. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described lower moving contact lifting is driven
Dynamic assembly includes installing rack, the 3rd lift cylinder and the 4th lift cylinder, and described installing rack lifting sliding coordinates in frame,
Installing rack is connected with the cylinder arm of the 3rd lift cylinder, and described 4th lift cylinder is fixedly mounted in frame, the 4th lifting air
The cylinder arm of cylinder is connected lifting support, and lifting support lifting sliding coordinates in frame, and described 3rd lift cylinder is solid
Dingan County is contained on lifting support, and described lower moving contact telescopic drive assembly is arranged on installing rack, and lower moving contact is with can be along in front and back
Flexible sliding is matched with installing rack and is indirectly slidably fitted in frame thus constituting.
5. according to claim 4 circuit breaker characteristic test loading stage it is characterised in that：Described lower moving contact telescopic drive group
Part includes the first telescopic cylinder, the second telescopic cylinder and sliding seat, and described sliding seat is coordinated with sliding type along the longitudinal direction
On described installing rack, the first telescopic cylinder is fixedly mounted in sliding seat, and the cylinder arm of the first telescopic cylinder is solid with installing rack
Fixed connection, described second telescopic cylinder is fixedly mounted in sliding seat, and the cylinder arm of the second telescopic cylinder is provided with fixed plate, institute
State lower moving contact to be fixedly connected with fixed plate, described sliding seat is provided with lower contact positioning pilot hole seat, lower moving contact slides and leads
To cooperation in the positioning pilot hole of lower contact positioning pilot hole seat.
6. circuit breaker characteristic according to claim 1 or claim 2 test loading stage it is characterised in that：Described upper clamping contact is with can
The mode stretched along sliding in front and back is assemblied in frame, and upper clamping contact is connected with and drives its flexible upper contact head drive component,
Upper contact head drive component includes installing plate, and lower clamping contact is fixedly connected on a mounting board, and the two ends of installing plate are respectively connected with
Contact telescopic drive cylinder, upper contact head telescopic drive cylinder is fixed in frame, the cylinder arm of upper contact head telescopic drive cylinder with
Installing plate is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611067021.0A CN106405412B (en) | 2016-11-28 | 2016-11-28 | Circuit breaker characteristic test loading table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611067021.0A CN106405412B (en) | 2016-11-28 | 2016-11-28 | Circuit breaker characteristic test loading table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106405412A true CN106405412A (en) | 2017-02-15 |
| CN106405412B CN106405412B (en) | 2023-09-19 |
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ID=58083636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611067021.0A Active CN106405412B (en) | 2016-11-28 | 2016-11-28 | Circuit breaker characteristic test loading table |
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Cited By (4)
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| CN107797058A (en) * | 2017-11-27 | 2018-03-13 | 湖南长高成套电器有限公司 | A kind of breaker detects test system eventually |
| CN108535643A (en) * | 2018-06-22 | 2018-09-14 | 杭州之江开关股份有限公司 | A kind of breaker three-phase high-current detector and its operating method |
| CN111398848A (en) * | 2020-03-13 | 2020-07-10 | 广东华辉煌光电科技有限公司 | Testing equipment of flexible lamp area |
| CN112098822A (en) * | 2020-08-20 | 2020-12-18 | 国家电网有限公司 | Residual current operated circuit breaker is with going up electric detection device |
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| CN107797058A (en) * | 2017-11-27 | 2018-03-13 | 湖南长高成套电器有限公司 | A kind of breaker detects test system eventually |
| CN108535643A (en) * | 2018-06-22 | 2018-09-14 | 杭州之江开关股份有限公司 | A kind of breaker three-phase high-current detector and its operating method |
| CN108535643B (en) * | 2018-06-22 | 2023-06-27 | 杭州之江开关股份有限公司 | Three-phase heavy current detection device of circuit breaker and operation method thereof |
| CN111398848A (en) * | 2020-03-13 | 2020-07-10 | 广东华辉煌光电科技有限公司 | Testing equipment of flexible lamp area |
| CN112098822A (en) * | 2020-08-20 | 2020-12-18 | 国家电网有限公司 | Residual current operated circuit breaker is with going up electric detection device |
| CN112098822B (en) * | 2020-08-20 | 2023-07-25 | 国家电网有限公司 | Residual current operated circuit breaker is with detecting device that powers on |
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| CN106405412B (en) | 2023-09-19 |
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