CN1147897C - Electrical breaking device comprising differential trip device and circuit breaker comprising such device - Google Patents
Electrical breaking device comprising differential trip device and circuit breaker comprising such deviceInfo
- Publication number
- CN1147897C CN1147897C CNB991069757A CN99106975A CN1147897C CN 1147897 C CN1147897 C CN 1147897C CN B991069757 A CNB991069757 A CN B991069757A CN 99106975 A CN99106975 A CN 99106975A CN 1147897 C CN1147897 C CN 1147897C
- Authority
- CN
- China
- Prior art keywords
- differential
- trip gear
- release lever
- contact
- circuit
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
-
- 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
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages
- H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages with differential transformer
Abstract
The Electrical breaking device is disposed in a narrow housing, and includes an electromagnetic release mechanism 7, acting on a release means, for separating a fixed contact 3 from a movable contact 4 in the state of current sudden rising and insulation fault. In a plane which is parallel to a lager side wall, a release mechanism is substantially located on the extended line of another release mechanism. A differential release mechanism includes an actuating device 16 (relay), a movable actuating rod 19 switching between static position and actuating releasing means, which is characterized in that the release rod 19 is disposed at the outside of the electromagnetic release mechanism 7, and directly acts on the said release means 20 when a differential fault occurs.
Description
Technical field
The present invention relates to a kind of tripper that is positioned at a narrow housing, comprise electromagnetic tripping apparatus and differential trip gear, in the plane of the bigger side plate that is parallel to housing, one of them trip gear obviously is positioned on another the extended line, electromagnetic tripping apparatus acts on the dropout part and controls trip gear, thereby when electric current raises suddenly, fixed contact is separated with movable contact.Differential trip gear acts on the described dropout part and controls trip gear, thereby when in installation process insulation fault taking place, described fixed contact is separated with movable contact, described differential trip gear comprises actuating device, is used for mobile actuator lever between the position of resting position and actuation trip spare.
Background technology
The EP-0 that submits to from the applicant, the differential circuit breaker of describing in 665,569 as can be known, it comprise and the circuit-breaker unit transverse near and the differential trip unit that connects.In described patent document, differential trip gear links to each other with the mechanism of circuit-breaker unit by the mechanical trip link on the dropout rod that acts on the circuit-breaker unit, and is used to transmit differential dropout instruction.
Yet, because described two unit are laterally close, because the differential circuit breaker unit has bigger width, so overall size is bigger.Thereby need reduce overall dimension.A contemplated solution is that differential trip gear and circuit-breaker are arranged to a module and are positioned at same plane.Such device is in U.S. Patent No. 4,608, and is open in 546.In this document, electromagnetic tripping apparatus or bar of differential trip gear indication are finished dropout.This frizzen can be installed in the fixed core of magnetic trip gear with being free to slide, and can be by the plunger or the translation by the differential release lever driving of differential trip gear control of magnetic trip gear.
This device has multinomial shortcoming.One of them shortcoming is that described frizzen must be subjected to guiding very freely in fixed core and plunger because the differential energy that differential trip unit produces is too little.This makes that in the process that opens circuit generation is polluted and caused blocking on the radial clearance between release lever and fixed core or plunger and the differential dropout rod easily, hinders normal differential operation.
In addition, owing to having consumed its part Impact energy, plunger make being free to slide of frizzen reduce the efficient and the productivity ratio of magnetic trip gear.
The double function of being finished by frizzen causes the accumulation (being the gap on tripping relay and the release lever one-level, the gap between release lever and the frizzen, and the gap between the dropout rod of frizzen and circuit-breaker) in gap and the accumulation of longitudinal size.
The existence of two parts has increased inertia and reaction time between the depression bar of relay and the dropout rod.
Another shortcoming is because differential release lever must not be subjected to the influence of magnetic trip gear, so differential release lever must be non magnetic.
Last point, in this device, the resetting of differential system turns back to its desired location by handle and finishes, so if handle is prevented from resetting, as under situation about locking, then can't reset.
Summary of the invention
The present invention aims to provide a kind of tripper with differential trip gear, and this apparatus structure is simple, and can overcome above-mentioned variety of issue.
For this reason, the objective of the invention is to obtain a kind of aforesaid tripper, it is characterized in that release lever is positioned at outside the electromagnetic tripping apparatus, and when differential fault takes place, act directly on the above-mentioned dropout part.
Because above characteristics have been eliminated the frictional force that is easy to stop differential release lever slip.Freely do not slide because require frizzen, so the efficient of magnetic trip gear does not reduce.
Reduced the increase of gap and longitudinal size simultaneously.
In addition, the inertia of parts and reaction time also reduce widely.
According to a concrete feature, this release lever is finished resetting of actuating device after contact is opened.
According to a concrete feature, above-mentioned release lever comprises the protruding end of working with trip gear, after contact is opened, makes the actuating of trip gear cause resetting of differential actuating device.
Because release lever can be independent of the magnetic trip gear, make protruding end and actuating link and can not rely on handle and obtain automatic differential resetting.
According to another feature, this trip gear comprises a latch system, by the flap that is fastened on rotationally on the movable contact movable contact is remained on make position, and because the brake function of dropout part unclamps latch system, causing flap in the rotation of a direction and separating of contact, works with flap and makes the rotation of flap cause resetting of differential actuating device in above-mentioned protruding end.
According to another feature, actuating device drives the translation between the position of resting position and actuation trip spare of parallel its longitudinal axis of release lever.
More preferably, this device comprises the manual control handle of contact, and release lever extends between handle and magnetic trip gear.
According to concrete feature, magnetic dropout part comprises the frizzen of working with coil, release lever comprises the crooked end that becomes the straight portion at about 10 ° α angle with the axle of frizzen and roughly curve the right angle on the direction of described frizzen end, and described bend is worked with the dropout part.
According to another characteristics, this device also comprises the testing circuit of being with test button, described test button is positioned under the handle and acts on and is positioned on the release lever spring part transversely, and described spring part links to each other the detection resistance in the circuit of differential function with the electromotive force of coil housing.
A further object of the invention is to obtain a kind of tripper that comprises one of above feature or combination of features.
Description of drawings
Description by the following specific embodiment of the invention can be known other advantage of the present invention and feature more, and the embodiment of the invention provides with non-limiting example, and shown in the drawings, wherein:
Fig. 1 illustrates the longitudinal section that differential circuit breaker of the present invention is in the load situation of contact closure;
Fig. 2 is and the similar view of Fig. 1 the differential relay that shows the differential circuit breaker of the position that is in contact closure and just threaded off before contact is opened;
Fig. 3 is and the similar view of Fig. 2, illustrates to be in the relay reset position circuit-breaker opened of contact simultaneously.
Embodiment
In the drawings, modular circuit-breaker unit B links to each other with the electric conductor of ac power system by splicing ear 1, so that transshipping, protecting when short circuit or differential fault (or installation fault) power-supply system.
This device covers in the narrow housing 2, and housing 2 is made up of two parts, and one of them is removed so that can see the mechanism of this device.This housing 2 presents top board a, base plate b, header board c, back plate d and two bigger side plate e (only seeing among the figure).This housing mainly holds pair of separable contact 3,4 (being respectively fixed contact 3 and movable contact 4), operating mechanism 5, electromagnetic tripping apparatus 7, thermal release device 8, differential trip gear 9 and circuit-breaker trip gear D, wherein, operating mechanism 5 activates the control circuit circuit breaker switching by handle 6.
Differential trip gear 9 comprises the device that detects differential current with the form of addition transformer 14; The testing circuit (Fig. 1) of band test button 15; The actuating device that is called relay 16 forms of magnetic locking-type relay; Electronic processing circuit has the accessory power supply 17 that is installed on the printed circuit board (PCB).
As everyone knows, the addition transformer comprises the magnetic circuit that helical is tubular, and the neutral line and power line mutually be by this solenoid, and is electrically connected with the lower terminal of circuit-breaker and forms the elementary winding of transformer.Secondary winding is wrapped on the solenoid and will be electrically connected by the input of lead with electronic circuit 17.The output of electronic circuit is electrically connected with the coil of tripping relay 16.
Tripping relay 16 itself is known, is not described in detail herein.This relay pack vinculum circle can be according to the mobile core 16b of the instruction that electronic circuit sends, and when differential fault took place, core 16b acted on the differential release lever 19, so that at resting position and the bar 19 bumps carriage release lever between the position of rod 20 of threading off.Spring 18 is installed between the area supported of the area supported 16a of relay 16 and core 16b.
As shown in the figure, release lever 19 extends between the coil 10 of above-mentioned handle 6 and electromagnetic tripping apparatus 7, becomes about 10 ° angle α with the axis of coil 10.This bar comprises the straight 19a of portion, and the one end is crooked 90 ° bend 19b on the direction of rod 20 of threading off.The end of bar 19c is slightly rounded, the shape of corresponding rod 20 parts of working with described bar 19.
Circuit-breaker trip gear D comprises latch system 22,20 in known manner, is arranged to by plate 23 movable contact 4 be remained on make position, and plate 23 is installed in the housing rotationally and is connected in securely on the movable contact 4.
As can be seen from the figure, release lever 19 comprises the protruding end 21 in cross section triangular in shape in the plane shown in the figure, it is with plate 23 work (being pressed on the plate 23), the rotation of plate 23 after each the dropout causes resetting of differential release lever 19, be that the power that differential lever overcomes spring 18 is moved on relay 16 directions, till rebuliding magnetic latch, this will be explained in more detail below.
Can see that bar 19 is by locating and guiding on the support 24 that firmly is connected on the housing sidewall and guided translation.
This circuit-breaker also comprises the testing circuit of being with test button, described button 15 is positioned under the handle 6, and act on and be positioned on the bar spring part 15a transversely, described spring part 15a is connected to the detection resistance 17a in the electronic circuit of differential function on the electromotive force of coil 10 shells.
The operation of differential circuit breaker of the present invention is described with reference to Fig. 1 to 3 below.Except when detecting differential fault, its operation under overload or short-circuit conditions does not change with respect to the situation of prior art.
Among Fig. 1, circuit-breaker is in load situation, contact closure, and this normal running with electric power system is consistent.In this state, bar 19 remains on the resting position of the core 16b of potential relay, and this core is kept by magnetic latch.
When by the electric power system generation insulation fault of differential circuit breaker protection, addition transformer 14 sends the instruction of threading off to electronic circuit 17, and the excitation of the coil of back control relay 16 is amplified in this instruction.This makes the magnetic latch of core 16b of relay 16 unclamp, owing to the power of spring 18 drives release lever 19 (Fig. 2) translation on the direction of rod 20 of threading off (core unclamps, spring is stronger and act on the bar).
When above-mentioned motion took place, bar was by its curved end 19b bump dropout rod 20, and this causes by plate 23 latch system 20,22 that movable contact 4 remains on make position being unclamped.Plate 23 is driven rotation counterclockwise, till the effect owing to back-moving spring is opened contact.In this motion process, the protruding end 21 of plate 23 bump release levers 19 also makes described bar 19 turn back to retracted position, moves described bar 19 on the direction of relay 16 main bodys, till the magnetic latch of relay core rebulids.The state consistency of the circuit-breaker shown in this and Fig. 3.Handle 6 is manual activation in the clockwise direction subsequently, till contact closure, and the state consistency of the circuit-breaker shown in this and Fig. 1.
Therefore, because the existence of protruding end 21, resetting of differential relay 16 always finished after taking place in differential dropout.
As can be seen, the present invention both can be applicable to tripper such as the electric power system differential circuit breaker and also can be applied to device with accessory power supply.
Claims (11)
1. tripper that is positioned at a narrow housing, comprise electromagnetic tripping apparatus and differential trip gear, in the plane of the bigger side plate that is parallel to housing, one of them trip gear is positioned on another the extended line, electromagnetic tripping apparatus acts on the dropout part and controls trip gear, thereby when electric current raises suddenly, fixed contact is separated with movable contact, differential trip gear acts on the described dropout part and controls trip gear, thereby when in installation process insulation fault taking place, described fixed contact is separated with movable contact, described differential trip gear comprises actuating device, be used for mobile actuator lever between the position of resting position and actuation trip spare, it is characterized in that release lever (19) is positioned at outside the electromagnetic tripping apparatus (7), and when differential fault takes place, act directly on the above-mentioned dropout part (20).
2. device as claimed in claim 1 is characterized in that, this release lever is finished resetting of actuating device (16) after contact (3,4) is opened.
3. device as claimed in claim 2 is characterized in that, above-mentioned release lever (19) comprises the protruding end (21) of working with trip gear (D), after contact (3,4) is opened, makes the actuating of trip gear cause resetting of differential actuating device (16).
4. device as claimed in claim 3, it is characterized in that, this trip gear (D) comprises a latch system (22), by the flap (23) that is fastened on rotationally on the movable contact (4) movable contact is remained on make position, and because the brake function of dropout part (20) unclamps latch system (22), causing flap (23) in the rotation of a direction and separating of contact, works with flap (23) and makes the rotation of flap (23) cause resetting of differential actuating device (16) in above-mentioned protruding end (21).
5. as each described device in the claim 1 to 4, it is characterized in that actuating device (16) drives the translation between the position of resting position and actuation trip spare (20) of parallel its longitudinal axis of release lever (19).
6. as each described device in the claim 1 to 4, it is characterized in that this device comprises the manual control handle of contact (6), release lever (19) extends between handle (6) and magnetic trip gear (7).
7. as each described device in the claim 1 to 4, it is characterized in that, magnetic trip gear (7) comprises the frizzen (12) of working with coil (10), release lever (19) comprises the crooked end (19b) that becomes the straight portion (19a) at about 10 ° α angle with the axle of frizzen (12) and roughly curve the right angle on the direction of described frizzen (12) end, and described bend is worked with dropout part (20).
8. as each described device in the claim 1 to 4, it is characterized in that actuating device is magnetic latching relay (16).
9. as each described device in the claim 1 to 4, it is characterized in that, this device also comprises the testing circuit of being with test button, described test button is positioned under the handle (6) and acts on and is positioned on the release lever spring part transversely, and described spring part links to each other the electromotive force of the detection resistance (17a) in the circuit of differential function with coil (10) shell.
10. the circuit-breaker that comprises each the described tripper in the claim as described above.
11. circuit-breaker as claimed in claim 10 is characterized in that, dropout part (20) is the rod of threading off.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9807190 | 1998-06-04 | ||
| FR9807190A FR2779568B1 (en) | 1998-06-04 | 1998-06-04 | ELECTRICAL CUT-OFF DEVICE INCLUDING A DIFFERENTIAL TRIP DEVICE AND CIRCUIT BREAKER INCLUDING SUCH A DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1238546A CN1238546A (en) | 1999-12-15 |
| CN1147897C true CN1147897C (en) | 2004-04-28 |
Family
ID=9527145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991069757A Expired - Lifetime CN1147897C (en) | 1998-06-04 | 1999-06-03 | Electrical breaking device comprising differential trip device and circuit breaker comprising such device |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0962952B1 (en) |
| CN (1) | CN1147897C (en) |
| AT (1) | ATE258715T1 (en) |
| AU (1) | AU745538B2 (en) |
| BR (1) | BR9902700A (en) |
| DE (1) | DE69914403D1 (en) |
| EA (1) | EA001567B1 (en) |
| FR (1) | FR2779568B1 (en) |
| HK (1) | HK1022043A1 (en) |
| ZA (1) | ZA993751B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466137C (en) * | 2006-10-13 | 2009-03-04 | Tcl低压电器(无锡)有限公司 | Electromagnetic residual current action protector and its protecting method |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10118098A1 (en) * | 2001-04-11 | 2002-10-17 | Abb Patent Gmbh | Service switching device |
| JP4090850B2 (en) * | 2002-11-13 | 2008-05-28 | 三菱電機株式会社 | Circuit breaker |
| DE102004004840B4 (en) * | 2004-01-30 | 2006-05-11 | Siemens Ag | Protection switching device with residual current release |
| DE102004034859A1 (en) * | 2004-07-19 | 2006-02-16 | Siemens Ag | Protection device in narrow construction |
| FR2874740B1 (en) * | 2004-09-02 | 2006-10-20 | Schneider Electric Ind Sas | ELECTROMAGNETIC TRIGGER AND ELECTRICAL CUTTING APPARATUS HAVING THE SAME |
| FR2903223B1 (en) * | 2006-06-29 | 2008-08-15 | Schneider Electric Ind Sas | ELECTRICAL PROTECTION APPARATUS CONTROLLED BY AN AUXILIARY CONTROL DEVICE. |
| EP2045825A1 (en) * | 2007-10-01 | 2009-04-08 | Siemens Aktiengesellschaft | Switching element |
| FR2925756B1 (en) | 2007-12-20 | 2010-02-26 | Schneider Electric Ind Sas | MODULAR ELECTRICAL PROTECTION APPARATUS COMPRISING A COMPLEMENTARY ELECTRICAL FUNCTION SUCH AS THE DIFFERENTIAL PROTECTION FUNCTION |
| CN101656180B (en) * | 2008-08-18 | 2012-08-22 | 湖北盛佳电器设备有限公司 | Electromagnetic short circuit protection breaker |
| FR2943847B1 (en) * | 2009-03-31 | 2011-04-01 | Schneider Electric Ind Sas | THERMAL RELEASE DEVICE FOR AN ELECTRICAL PROTECTION DEVICE |
| WO2011041843A1 (en) * | 2009-10-08 | 2011-04-14 | Stephen James Woolley | 3 phase rcbo |
| FR2961343B1 (en) * | 2010-06-15 | 2012-06-08 | Schneider Electric Ind Sas | AUXILIARY RELEASE DEVICE FOR ASSOCIATED WITH A CIRCUIT BREAKER. |
| DE102010032030B4 (en) * | 2010-07-21 | 2022-06-30 | Siemens Aktiengesellschaft | Electrical switch |
| DE102011014061B4 (en) * | 2011-03-16 | 2013-11-28 | Abb Ag | Circuit breaker and method of making a circuit breaker |
| US20120250206A1 (en) * | 2011-03-30 | 2012-10-04 | General Electric Company | Compact residual current breaker with overcurrent protection |
| EP2833389A1 (en) * | 2013-07-31 | 2015-02-04 | ABB S.p.A. | A low voltage residual current device with solid neutral |
| FR3028662B1 (en) * | 2014-11-14 | 2016-12-16 | Hager-Electro Sas | ELECTROMAGNETIC ACTUATOR WITH MULTIPLE COILS |
| FR3028663B1 (en) * | 2014-11-14 | 2016-12-16 | Hager-Electro Sas | ELECTROMAGNETIC ACTUATOR WITH MULTIPLE COILS |
| CN105609385B (en) * | 2016-03-15 | 2018-02-09 | 佳一电气有限公司 | Multi-functional terminal end electrical equipment |
| CN105762033B (en) * | 2016-04-27 | 2018-09-07 | 乐清市也为电气有限公司 | A kind of moving contact operating mechanism of leakage circuit breakers |
| ITUA20164207A1 (en) * | 2016-06-08 | 2017-12-08 | Gewiss Spa | COMPACT CONTROL MODULE, FOR AUTOMATIC RESET DEVICES |
| FR3057389B1 (en) * | 2016-10-11 | 2020-12-25 | Schneider Electric Ind Sas | DIFFERENTIAL ELECTRICAL CUT-OFF EQUIPMENT INCLUDING A DIFFERENTIAL FUNCTION TEST DEVICE |
| CN115148546B (en) * | 2022-08-07 | 2023-09-26 | 浙江西屋电气股份有限公司 | Single-pole miniature circuit breaker capable of remotely controlling opening and closing |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US372392A (en) * | 1887-11-01 | And ed | ||
| US3723924A (en) * | 1971-10-04 | 1973-03-27 | Ite Imperial Corp | Shunt trip and undervoltage device |
| US3806846A (en) * | 1973-07-05 | 1974-04-23 | Gen Electric | Pushbutton reset undervoltage release device |
| US3919674A (en) * | 1974-11-26 | 1975-11-11 | Gen Electric | Accessory apparatus for tripping an electric circuit breaker |
| FR2305012A1 (en) * | 1975-03-21 | 1976-10-15 | App Electr Cie Gle | Electric contact-breaker - has differential transformer and sensitive electromagnetic relay |
| DE3339400A1 (en) * | 1983-10-29 | 1985-05-09 | Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg | SELF-SWITCH WITH PITCH ARM RELEASE |
| FR2578093B1 (en) * | 1985-02-27 | 1987-03-06 | Merlin Gerin | UNIPOLAR AND NEUTRAL DIFFERENTIAL CIRCUIT BREAKER |
| FR2626104B1 (en) * | 1988-01-20 | 1995-05-24 | Hager Electro | IMPROVEMENTS ON AUTOMATIC SWITCHES, ESPECIALLY DIFFERENTIAL SWITCHES AND CIRCUIT BREAKERS |
| IE71036B1 (en) * | 1990-02-23 | 1997-01-15 | Square D Co | A circuit breaker |
-
1998
- 1998-06-04 FR FR9807190A patent/FR2779568B1/en not_active Expired - Fee Related
-
1999
- 1999-05-31 AT AT99410075T patent/ATE258715T1/en not_active IP Right Cessation
- 1999-05-31 EP EP99410075A patent/EP0962952B1/en not_active Expired - Lifetime
- 1999-05-31 DE DE69914403T patent/DE69914403D1/en not_active Expired - Lifetime
- 1999-06-02 BR BR9902700A patent/BR9902700A/en not_active IP Right Cessation
- 1999-06-03 ZA ZA9903751A patent/ZA993751B/en unknown
- 1999-06-03 AU AU33157/99A patent/AU745538B2/en not_active Ceased
- 1999-06-03 EA EA199900440A patent/EA001567B1/en not_active IP Right Cessation
- 1999-06-03 CN CNB991069757A patent/CN1147897C/en not_active Expired - Lifetime
-
2000
- 2000-02-18 HK HK00100979A patent/HK1022043A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466137C (en) * | 2006-10-13 | 2009-03-04 | Tcl低压电器(无锡)有限公司 | Electromagnetic residual current action protector and its protecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69914403D1 (en) | 2004-03-04 |
| EP0962952B1 (en) | 2004-01-28 |
| EP0962952A1 (en) | 1999-12-08 |
| EA199900440A2 (en) | 1999-12-29 |
| ATE258715T1 (en) | 2004-02-15 |
| EA199900440A3 (en) | 2000-04-24 |
| EA001567B1 (en) | 2001-04-23 |
| ZA993751B (en) | 1999-12-06 |
| CN1238546A (en) | 1999-12-15 |
| FR2779568B1 (en) | 2000-07-13 |
| HK1022043A1 (en) | 2000-07-21 |
| AU745538B2 (en) | 2002-03-21 |
| AU3315799A (en) | 1999-12-16 |
| FR2779568A1 (en) | 1999-12-10 |
| BR9902700A (en) | 2000-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040428 |