CN1953124A - Dielectric test switch and earth leakage breaker - Google Patents
Dielectric test switch and earth leakage breaker Download PDFInfo
- Publication number
- CN1953124A CN1953124A CNA2006101373762A CN200610137376A CN1953124A CN 1953124 A CN1953124 A CN 1953124A CN A2006101373762 A CNA2006101373762 A CN A2006101373762A CN 200610137376 A CN200610137376 A CN 200610137376A CN 1953124 A CN1953124 A CN 1953124A
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- China
- Prior art keywords
- switch
- breaker
- circuit
- test switch
- dielectric test
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Abstract
Problem of the invention to be solved: providing an insulation property switch configuration which is mounted in the grounded residual current breaker, the switch is provided with a small size and can be additionally mounted on the limited space on the main body of the breaker without changing the position of the main components. The solution: The grounded residual current breaker is provided with a grounded residual current trip which including a grounded residual current detector (7) in the main body (12) of the breaker, the grounded residual current breaker is equipped with a manual operated insulation property test switch (11) for cutting off the grounded residual current detecting current from the main circuit when executes the insulating test and the withstand voltage test of the breaker. The insulation property test switch (11) is provided with a component configuration which includes: an insulating switch shell (13) for separating the dividing wall (13c) of each electrode; a plurality of fixed electrode holders (15) for holding a pair of fixed electrode (14) of each electrode; a bridge-shaped movable contact (16) which is consisted of reverse V-shaped spring leaves and is disposed facing the fixed electrode on top of the same for using in each electrode; a movable contact holder (17) which is mounted slidablely in a vertical direction on the switch shell for holding the movable contacts of each electrode together; and an action head (17a) extending on the top of the contact holder and extend upwards from the switch shell. The hook on the top of the action head is disposed adjacent to an opening of the cover of the main body, and the hook is manually operated for taking down or up to close or cut off the insulation property test switch.
Description
Technical field
The present invention relates to a kind of dielectric test switch, this test switch can be applied to carry out the earth-leakage circuit-breaker of overcurrent protection and earth fault protection function in low-voltage distribution system.This dielectric test switch can disconnect the Leaked Current of Line to Ground testing circuit in main circuit when the insulation of carrying out earth-leakage circuit-breaker and withstand voltage test, with protection Leaked Current of Line to Ground testing circuit.The invention still further relates to a kind of structure that the earth-leakage circuit-breaker of this dielectric test switch is housed.
Background technology
Protective device in the low-voltage distribution system comprises molded tank-truck circuit-breaker and earth-leakage circuit-breaker.The conventional earth-leakage circuit-breaker of popularizing on the Japanese market can provide overcurrent protection and earth fault protection at present.In earth-leakage circuit-breaker recently, for making the consumer be easier to use, the earth-leakage circuit-breaker of en-block construction pattern is a main flow, and wherein the body shell of the body shell of a molded tank-truck circuit-breaker in same framework and an earth-leakage circuit-breaker has same external dimensions and shared most possibly each critical piece.
Be used for earth leakage protection; earth-leakage circuit-breaker is equipped with a zero-phase current transformer and a leakage current testing circuit (a kind of electronic circuit that comprises integrated circuit); the former detects the interior unsymmetrical current of each primary wires of main circuit, and the latter detects the Leaked Current of Line to Ground incident from the secondary output voltage of zero-phase current transformer.This circuit breaker is once the output signal tripping operation of receiving from the Leaked Current of Line to Ground testing circuit.The electrical power that is used to control this Leaked Current of Line to Ground testing circuit is to supply with by the in-line power lead between the Leaked Current of Line to Ground testing circuit in main circuit and earth-leakage circuit-breaker, and is that the phasetophase voltage of main circuit is carried out rectification to supply with the electrical power of necessity to the Leaked Current of Line to Ground testing circuit.
Various standard codes, earth-leakage circuit-breaker product should have the predefined phase insulation intensity of each phase that can resist the main circuit in the body shell.Therefore, each product need stand insulation and withstand voltage test (megameter test), to determine whether to meet predetermined dielectric strength.Insulation and withstand voltage test are to be undertaken by applying test voltage in each of each binding post of main circuit between mutually under the off-state at earth-leakage circuit-breaker under the condition of the contact that disconnects main circuit.Test voltage is the rated voltage that is defined as corresponding to earth-leakage circuit-breaker.At 400 earth-leakage circuit-breakers that arrive in the 600V scope, test voltage is 2,500V for rated voltage.
If under the situation that the Leaked Current of Line to Ground testing circuit is connected in main circuit, insulate with withstand voltage test, be the high test voltage that the Leaked Current of Line to Ground testing circuit of electronic circuit will stand to apply, this will damage testing circuit.So, for the ease of insulating in the installation place of earth-leakage circuit-breaker and the withstand voltage test, proposed and become a kind of earth-leakage circuit-breaker of cicada (patent document 1), wherein, additionally be equipped with a dielectric test switch (megameter Test Switchboard) in this earth-leakage circuit-breaker, and when insulating, this dielectric test switch is disconnected, so that the Leaked Current of Line to Ground testing circuit is disconnected in main circuit with the withstand voltage test.Fig. 4 is the circuit diagram of this earth-leakage circuit-breaker.
Referring to Fig. 4, label 1 expression has each three-phase main circuit mutually of R, S and T, the main circuit contact of label 2 expression circuit breakers, label 3 expressions are used for the switching mechanism of main circuit contact 2, label 4 expression switch knobs, and label 5 expression over current trips, it just makes the switching mechanism tripping when detecting overcurrent or short circuit current.This ground connection situation that detects power distribution circuit also can make the Leaked Current of Line to Ground tripgear of circuit breaker tripping comprise zero-phase current transformer 6, Leaked Current of Line to Ground testing circuit 7 (electronic circuit that comprises integrated circuit) and breaking coil device 8; Wherein, zero-phase current transformer detects the main circuit unsymmetrical current of each primary wires mutually of R, S and T of main circuit 1, the ground connection incident that Leaked Current of Line to Ground testing circuit 7 detects from the secondary output voltage of zero-phase current transformer 6, and breaking coil device 8-receives the just action of output of Leaked Current of Line to Ground testing circuit 7.
Supply with the electrical power that is used to control Leaked Current of Line to Ground testing circuit 7 from the supply lines 9 and the rectification circuit 10 of the voltage between phases of main circuit 1 each lead by being connected in main circuit 1.Dielectric test switch 11 (patent document 1) is inserted in these power supply circuits, and it turn-offs before the insulation of earth-leakage circuit-breaker and withstand voltage test, so that Leaked Current of Line to Ground testing circuit 7 is disconnected in main circuit.Although the Leaked Current of Line to Ground testing circuit 7 in the example of Fig. 1 is to be powered mutually with T by the R phase of main circuit by voltage between phases being transformed into direct current, and correspondingly, these power supply circuits adopt the dielectric test switch at the two poles of the earth, but in some cases, Leaked Current of Line to Ground testing circuit 7 also can be powered by R, S and T three-phase, and correspondingly adopts the dielectric test switch of one three utmost point.
(patent document 1)
Japanese unexamined patent publication No.2005-26105
Summary of the invention
The present invention is with the problem that solves
In order in the confined space in the body shell of the earth-leakage circuit-breaker of en-block construction pattern, to install a dielectric test switch additional, must solve important problem and comprise the miniaturization of finding the space that is used to install this switch, this switch and the reliability of guaranteeing to comprise electric insulation and operability.
Earth-leakage circuit-breaker has the many functional parts that will install, compares with the molded tank-truck circuit-breaker of the identical frames with universal external size, comprises the zero-phase current transformer and the Leaked Current of Line to Ground testing circuit of increase.Each main function components of multiple pattern is contained in the body shell, does not almost give and installs the dielectric test switch slot milling additional.Therefore, dielectric test switch must be as far as possible little and compact.From this viewpoint, the dielectric test switch (that is a slipping switch) of the earth-leakage circuit-breaker that patent document 1 discloses needs a very long cut-off/close operational stroke (distance), thereby it is difficult to be configured to the little and compact structure of external dimensions.Also having the problem on the manufacture process, is exactly to be difficult to realize the general of parts when producing the switch of different size (the two poles of the earth or three utmost points).
In view of the above problems, an object of the present invention is to provide a kind of dielectric test switch that improves structure that has.By commenting the structure of dielectric test switch, be intended to make dielectric test switch of the present invention to reach the dielectric strength and the parts versatility of improved compactedness, improved operability, enhancing.Target dielectric test switch of the present invention structurally is modified in the body shell that can be installed at circuit breaker, and need not to change the layout of main function components.Another object of the present invention provides a kind of earth-leakage circuit-breaker that this dielectric test switch is installed, and wherein, when the insulation of carrying out circuit breaker and withstand voltage test, is easy to make the Leaked Current of Line to Ground testing circuit to disconnect in main circuit by manual operation.
The measure of dealing with problems
In order to achieve the above object, dielectric test switch of the present invention is connected in and is arranged in the Leaked Current of Line to Ground testing circuit of earth-leakage circuit-breaker and the power supply circuits between the main circuit and when the insulation of carrying out circuit breaker and withstand voltage test, turn-off, so that the Leaked Current of Line to Ground testing circuit is disconnected in main circuit.This dielectric test switch has a modular construction, comprising: insulator switch case that is useful on the compartment of each utmost point, be arranged in the switch case lower area each utmost point fixed electrode to, be arranged in that fixed electrode keeps together to the bridge-type moving contact of each utmost point of top, the moving contact of all each utmost points and vertical direction be contained in slidably in the switch case movable contact holder and from the continuity of contact retainer and extend upward the action head (claim 1) of switch case.Each parts of dielectric test switch have following characteristics.
(1) the bridge-type moving contact is to constitute with the spring leaf that two ends have an inverted V-shaped of contact point, and the center of spring leaf is connected in the lower end of movable contact holder, and each moving contact is facing to each fixed contact (claim 2).
(2) fixed electrode of each utmost point is on the fixed electrode retainer that is maintained at the holder pattern, and the fixed electrode retainer is to be installed in (claim 3) in the switch case as a holder.
A kind of earth-leakage circuit-breaker, it comprises in its body shell: the main circuit contact, the switching mechanism that is used for the main circuit contact, over current trip, the Leaked Current of Line to Ground tripgear that comprises zero-phase current transformer and Leaked Current of Line to Ground testing circuit, and dielectric test switch, this switch is the power supply circuits of the back panel wiring between closed and disconnected Leaked Current of Line to Ground testing circuit and the main circuit manually, when the insulation of carrying out circuit breaker and withstand voltage test, this dielectric test switch can be turn-offed, so that the Leaked Current of Line to Ground testing circuit is disconnected in main circuit, wherein, the dielectric test switch of said structure (claim 1 to 3) being arranged is interior that side (claim 4) of zero circuitry phase instrument transformer of body shell that is arranged in circuit breaker.
In order manually to carry out the connection/shutoff operation of dielectric test switch from the body shell outside of this earth-leakage circuit-breaker, the cover plate of the main casing of circuit breaker is provided with an opening that is used for switching manipulation, and this opening is facing to the top (claim 5) from the upwardly extending action head of the switch case of dielectric test switch.Easy to operate in order to ensure dielectric test switch is formed with a hook on the top of the action head of dielectric test switch, is used for coming this switch (claim 6) of closed and disconnected by manually pulling on and push this hook.
Effect of the present invention
Dielectric test switch with said structure can be configured to littler compacter than traditional switch (patent document 1), therefore and can be installed in the body shell of earth-leakage circuit-breaker, and need not to change the layout of the functional part of the common equipment in body shell and the body shell.
Dielectric test switch is provided with a hook on the top of passing the action head that its switch case stretches out, and this hook is positioned near the opening that is used for switching manipulation on the breaker body housing cover.Like this, under its installment state of the place, installation place of earth-leakage circuit-breaker, carry out its insulation and withstand voltage when test, can manually pull the on/off position to dielectric test switch from the outside at an easy rate.So, can improve operation convenience.
Dielectric test switch has the bridge-type moving contact made from the inverted V-shaped spring leaf, and the center of contact is connected in and is supported on bottom relative with fixed electrode and the movable contact holder above fixed electrode, compare with the ordinary tap of slide construction, this can reduce the required stroke of cut-off/close operation of this switch.Therefore, outside longitudinal length can be done shortlyer.
Dielectric test switch has the fixed electrode retainer of the holder pattern of the fixed electrode that is used to keep each utmost point.But this fixed electrode retainer can be used as common component and is installed in the switch case in the mode that clamps, and this is convenient to the assembling process of switch.In addition, this fixed electrode retainer is easy to be common to the dielectric test switch product of different size (the two poles of the earth or three utmost points).
Best execution mode of the present invention
Below, referring to figs. 1 through 3 explanations several preferred embodiments of the present invention.The identical parts with among Fig. 4 among Fig. 1 to 3 indicate with same label.
Fig. 3 shows the general structure of the earth-leakage circuit-breaker that dielectric test switch of the present invention is housed.Referring to Fig. 3, the body shell of the earth-leakage circuit-breaker of label 12 expression split structures, it is made of bottom shell 12a and top blind flange 12b.In body shell 12, switching mechanism 3, operating grip 4, over current trip 5, zero-phase current transformer 6, the Leaked Current of Line to Ground testing circuit (printed circuit board (PCB)) 7 of main circuit contact 2 are installed, these all are the functional parts of mentioning at Fig. 4, also have dielectric test switch 11, this will describe in detail hereinafter.Dielectric test switch is aligned in zero-phase current transformer 6 those sides and is installed in the space that each lead (primary wires of zero-phase current transformer) by main circuit centers on, and these leads pass the outer wall of zero-phase current transformer and body shell with the shape of bending.
The top blind flange 12b of the body shell 12 of circuit breaker is provided with an opening 12c who is used for switching manipulation, and the position of this opening can be adjusted (structure of action head will be described hereinafter) according to the position of the action head of dielectric test switch 11.By this opening, can be from the outside with manual operation (push and pull on) connection/shutoff dielectric test switch 11.
Fig. 2 (a) and (b) show the detailed structure of dielectric test switch 11 (in this example, being two-photo pole switch).Dielectric test switch 11 has a modular construction, and it comprises: the switch case of being made by insulator (resin) 13; Several fixed electrode retainers 15 (being formed from a resin), they each all be the pair of stationary electrodes 14 that the single part of a holder structure is arranged and keep each utmost point; The bridge-type moving contact 16 of and each electrode fixed electrode above relative with fixed electrode; The moving contact of all each utmost points kept together and be contained in movable contact holder 17 (being formed from a resin) in the switch case slidably at vertical direction; An and action 17a who continues and extend upward the cover plate 13a of switch case 13 from contact retainer 17 tops.The hook on an action 17a top is positioned near the opening 12c (Fig. 3) that is used for switching manipulation on the breaker body housing and is contained in the body shell 12.Label 18 among Fig. 3 indicates an installation retainer that is used for dielectric test switch.
When an action 17a of dielectric test switch 11 was pushed down, shown in Fig. 1 (a), each fixed electrode 14 of each utmost point became with bridge-type moving contact 16 and contacts, and makes this switch connection.When an action 17a was pulled on, shown in Fig. 1 (b), bridge-type moving contact 16 just broke away from fixed electrode 14, and this switch is disconnected.
Moving contacts 16 in the dielectric test switch 11 are bridging contact that constitutes with spring leaf and the top that is positioned at fixed electrode 14.So, to compare with the slide switch of routine, the operational stroke (distance) that is used for the closed and disconnected contact can reduce, and can reduce the vertical size of dielectric test switch 11 thus.The fixed electrode 14 of each utmost point is maintained on the retainer 15 of holder pattern, and is installed in the switch case 13 as holder.Like this, this fixed electrode retainer can be common to the assembling of the dielectric test switch product of different size (the two poles of the earth or three utmost points).Switch case 13 is separated by next door 13c, so as to guaranteeing each interpolar enough electric insulation distances is arranged.The moving contact 14 of each utmost point is connected in the bottom of contact retainer 17, so as to allowing by pushing or pull on synchronous connection/shutoff operation that the hook that is arranged on an action 17a top carries out all utmost points.
In the embodiment of the earth-leakage circuit-breaker shown in each figure, dielectric test switch is to be contained in together in the breaker body housing with other functional part.But, the present invention also can be applicable to such structure: wherein dielectric test switch is configured to one independently unit (a kind of external device (ED) that can randomly dispose that is used for earth-leakage circuit-breaker), and can is fixed on this dielectric test switch unit the outside of earth-leakage circuit-breaker body shell and is electrically connected on circuit breaker.
Brief Description Of Drawings
Fig. 1 shows the action of the dielectric test switch of one embodiment of the present of invention, wherein (a) and (b) respectively expression turn on and off state;
Fig. 2 shows the structure of the dielectric test switch of Fig. 1, and wherein (a) is exterior perspective view, (b) is exploded perspective view;
Fig. 3 is the overall stereogram that an earth-leakage circuit-breaker of dielectric test switch shown in Figure 1 is housed; And
Fig. 4 is the circuit diagram that is equipped with the earth-leakage circuit-breaker of a dielectric test switch.
(label declaration)
1 main circuit
2 main circuit contacts
3 switching mechanisms
4 operating grips
5 over current trips
6 zero-phase current transformers
7 Leaked Current of Line to Ground testing circuits
8 breaking coil unit
11 dielectric test switch
The body shell of 12 circuit breakers
The 12b cover plate
12c is used for the opening of switching manipulation
The switch case of 13 dielectric test switch
14 fixed electrodes
15 fixed electrode retainers
16 moving contacts
17 movable contact holders
17a moves head.
Claims (6)
1. dielectric test switch, it can be connected in and be arranged in the Leaked Current of Line to Ground testing circuit of an earth-leakage circuit-breaker and the power supply circuits between main circuit and can be turned off when the insulation of carrying out described circuit breaker and withstand voltage test, so that described Leaked Current of Line to Ground testing circuit is disconnected in main circuit, it is characterized in that:
Described dielectric test switch has a modular construction, and this assembly comprises: insulator switch case that is useful on the compartment of each utmost point, be arranged on described switch case lower area each utmost point fixed electrode to, be arranged on that described fixed electrode keeps together to the bridge-type moving contact of each utmost point of top, the moving contact of all each utmost points and movable contact holder in vertical direction is contained in described switch case slidably and one from the continuity of described contact retainer and extend upward the action head of described switch case.
2. dielectric test switch as claimed in claim 1 is characterized in that, described bridge-type moving contact is to be made of the spring leaf that two ends have an inverted V-shaped of contact point, and the center of described spring leaf is connected in the lower end of described movable contact holder.
3. dielectric test switch as claimed in claim 1, it is characterized in that, the fixed electrode of each utmost point on the fixed electrode retainer that is maintained at a holder pattern and described fixed electrode retainer be installed in the described switch case as a holder.
4. earth-leakage circuit-breaker, it comprises in its body shell: a plurality of main circuits contact, the switching mechanism that is used for described each main circuit contact, over current trip, the Leaked Current of Line to Ground tripgear that comprises zero-phase current transformer and Leaked Current of Line to Ground testing circuit, and dielectric test switch, this switch is the power supply circuits of the back panel wiring of closed and disconnected between described Leaked Current of Line to Ground testing circuit and main circuit manually, described dielectric test switch can be turned off when the insulation of carrying out described circuit breaker and withstand voltage test, so that described Leaked Current of Line to Ground testing circuit is disconnected in described main circuit, it is characterized in that:
Described dielectric test switch has a modular construction, and this assembly comprises: insulator switch case that is useful on the compartment of each utmost point, be arranged on described switch case lower area each utmost point fixed electrode to, be arranged on that described fixed electrode keeps together to the bridge-type moving contact of each utmost point of top, the moving contact of all each utmost points and movable contact holder in vertical direction is contained in described switch case slidably and one from the continuity of described contact retainer and extend upward the action head of described switch case; And described dielectric test switch is interior that side of described zero-phase current transformer of described body shell that is arranged in described circuit breaker.
5. earth-leakage circuit-breaker as claimed in claim 4, it is characterized in that, the cover plate of the body shell of described circuit breaker is provided with an opening that is used for switching manipulation, this opening faces toward from the top of the upwardly extending action head of the described switch case of described dielectric test switch, and can manually operate described dielectric test switch by described opening.
6. earth-leakage circuit-breaker as claimed in claim 5, it is characterized in that, described top of moving head at described dielectric test switch is formed with a hook, and this hook is used for coming the described switch of closed and disconnected by manually pulling on and push described hook.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005306974 | 2005-10-21 | ||
| JP2005306974A JP4839772B2 (en) | 2005-10-21 | 2005-10-21 | Withstand voltage test switch and earth leakage breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1953124A true CN1953124A (en) | 2007-04-25 |
| CN100541699C CN100541699C (en) | 2009-09-16 |
Family
ID=37944553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101373762A Active CN100541699C (en) | 2005-10-21 | 2006-10-20 | Dielectric test switch and earth-leakage circuit-breaker |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4839772B2 (en) |
| KR (1) | KR100771767B1 (en) |
| CN (1) | CN100541699C (en) |
| FR (1) | FR2892559B1 (en) |
| TW (1) | TWI368044B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610457A (en) * | 2012-03-22 | 2012-07-25 | 浙江鼎威科技有限公司 | Device of leakage breaker for combining leakage testing with leakage reset button |
| CN110729730A (en) * | 2019-11-19 | 2020-01-24 | 中国舰船研究设计中心 | Built-in isolated voltage-taking protection device and power-taking method |
| US20210159728A1 (en) * | 2019-11-25 | 2021-05-27 | Corning Research & Development Corporation | Systems and methods for integrity checks for safety features in a power distribution network |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200454912Y1 (en) * | 2009-10-16 | 2011-08-03 | 신재식 | Street Light Leakage Breaker Waterproof |
| JP2011253744A (en) * | 2010-06-03 | 2011-12-15 | Kawamura Electric Inc | Circuit breaker capable of detecting poor contact |
| FR2992093B1 (en) * | 2012-06-19 | 2014-06-13 | Schneider Electric Ind Sas | DEVICE FOR DISCONNECTING THE ELECTRONIC POWER SUPPLY CARD FROM THE FAULT PROCESSING CIRCUIT IN AN ELECTRICAL PROTECTION DEVICE AND APPARATUS COMPRISING SUCH A DEVICE |
| CN106353645B (en) * | 2016-08-16 | 2023-12-29 | 高邦电工（上海）有限公司 | Switch socket insulation voltage withstand detection device and voltage withstand test method |
| CN109212409A (en) * | 2017-07-04 | 2019-01-15 | 浙江正泰电器股份有限公司 | The automatic test device and test method of breaker |
| GB2572561A (en) * | 2018-04-03 | 2019-10-09 | Eaton Intelligent Power Ltd | Isolating switch with test point |
| CN108983084A (en) * | 2018-08-22 | 2018-12-11 | 广东理工职业学院 | A kind of motor protection test device of circuit breaker |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2971309B2 (en) * | 1993-12-07 | 1999-11-02 | 三菱電機株式会社 | Earth leakage breaker |
| JP3896616B2 (en) * | 1997-01-10 | 2007-03-22 | 松下電器産業株式会社 | Push-pull switch |
| JP3846528B2 (en) * | 1999-07-23 | 2006-11-15 | 三菱電機株式会社 | Earth leakage breaker |
| JP4128897B2 (en) * | 2003-04-11 | 2008-07-30 | 三菱電機株式会社 | Earth leakage breaker |
| JP4200291B2 (en) * | 2003-05-21 | 2008-12-24 | 富士電機アセッツマネジメント株式会社 | Earth leakage breaker |
| JP4123081B2 (en) * | 2003-07-03 | 2008-07-23 | 富士電機機器制御株式会社 | Earth leakage breaker |
| JP4085911B2 (en) * | 2003-07-31 | 2008-05-14 | 富士電機機器制御株式会社 | Earth leakage breaker |
-
2005
- 2005-10-21 JP JP2005306974A patent/JP4839772B2/en active Active
-
2006
- 2006-10-02 TW TW095136587A patent/TWI368044B/en active
- 2006-10-09 KR KR1020060097844A patent/KR100771767B1/en active IP Right Grant
- 2006-10-20 FR FR0609210A patent/FR2892559B1/en not_active Expired - Fee Related
- 2006-10-20 CN CNB2006101373762A patent/CN100541699C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610457A (en) * | 2012-03-22 | 2012-07-25 | 浙江鼎威科技有限公司 | Device of leakage breaker for combining leakage testing with leakage reset button |
| CN110729730A (en) * | 2019-11-19 | 2020-01-24 | 中国舰船研究设计中心 | Built-in isolated voltage-taking protection device and power-taking method |
| US20210159728A1 (en) * | 2019-11-25 | 2021-05-27 | Corning Research & Development Corporation | Systems and methods for integrity checks for safety features in a power distribution network |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2892559A1 (en) | 2007-04-27 |
| KR100771767B1 (en) | 2007-10-30 |
| CN100541699C (en) | 2009-09-16 |
| JP4839772B2 (en) | 2011-12-21 |
| TW200717008A (en) | 2007-05-01 |
| KR20070043607A (en) | 2007-04-25 |
| TWI368044B (en) | 2012-07-11 |
| JP2007115572A (en) | 2007-05-10 |
| FR2892559B1 (en) | 2020-01-10 |
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