CN203786556U - Electronic circuit breaker having self-detection function - Google Patents
Electronic circuit breaker having self-detection function Download PDFInfo
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- CN203786556U CN203786556U CN201420023063.4U CN201420023063U CN203786556U CN 203786556 U CN203786556 U CN 203786556U CN 201420023063 U CN201420023063 U CN 201420023063U CN 203786556 U CN203786556 U CN 203786556U
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- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 230000004907 flux Effects 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims description 40
- 238000012360 testing method Methods 0.000 claims description 27
- 238000003860 storage Methods 0.000 claims description 9
- 238000004088 simulation Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000004092 self-diagnosis Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The utility model discloses an electronic circuit breaker having a self-detection function. The electronic circuit breaker comprises a circuit breaker housing. An electronic controller is arranged inside the circuit breaker housing. The electronic controller includes a controller chip MCU, a self-detection functional device, an indication lamp, an LCD display screen, a navigation keyboard and a detection module. The self-detection functional device, the indication lamp, the LCD display screen, the navigation keyboard and the detection module are all connected with the controller chip MCU. The self-detection functional device is arranged inside the electronic controller, and does not need to connect with any external accessories through data lines in a non-working state. By using the self-detection functional device inside the electronic controller, non-working state self detection of the electronic circuit breaker is achieved. The self-detection functional device also includes a battery module which supplies power for the electronic controller, the detection module, and a flux transformer of the electronic circuit breaker in the non-working state. According to the electronic circuit breaker provided by the utility model, the detection of a protection function of the product in a non-working state can be carried out without connecting any external accessories.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, particularly relates to a kind of electronic breaker with self-checking function of low pressure.
Background technology
Low-voltage circuit breaker is that one not only can be connected and disjunction normal load electric current and overload electric current, can also connect the device for switching with disjunction short-circuit current.At present, obtain a wide range of applications.
The reliability service of low-voltage circuit breaker is being related to the national security of the lives and property, and for guaranteeing the reliability of low-voltage circuit breaker product, people are generally provided with testing button on Thermomagnetic type product at present, for the reliability of test products actuating mechanism.And along with the construction of intelligent grid, the application of electronic breaker product is more and more extensive, but electronic breaker still lacks the testing and diagnosing function for self functional completeness and reliability at present, or only there is test tripping function, or individual product has product self-checking function but needs external annex to be engaged under duty and to use, extremely inconvenient consumer products completes in production, detection while installing and using front or product maintenance etc. under off working state, and the product of an off working state is put into duty, because whether do not understand the defencive function of current production complete, to more there is unpredictable risk.
Utility model content
The purpose of this utility model is to overcome the defect of prior art; a kind of electronic breaker with self-checking function is provided; before making product complete, install and use in production or when product maintenance; under off working state, user can realize the detection of product protection function without external any accessories of a product.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of electronic breaker with self-checking function, comprise Shell of circuit breaker, in Shell of circuit breaker, be provided with electronic controller 20, described electronic controller 20 comprises controller chip MCU, self-checking function device 21, pilot lamp 23, LCD display 24, navigation keyboard capable 25 and detection module, and described self-checking function device 21, pilot lamp 23, LCD display 24, navigation keyboard capable 25 and detection module are all connected with controller chip MCU; Described self-checking function device 21 is arranged in electronic controller 20, under off working state, do not need the external any annex of data line, can realize the off working state self-inspection of electronic breaker by 20 self-checking function device 21 in electronic controller, self-checking function device 21 is provided with self-inspection button 215, also comprises the battery module 212 that can power for electronic controller 20, detection module and electronic breaker magnetic flow convertor under off working state in described self-checking function device 21.
Further, a side of described electronic controller 20 is provided with the mounting groove 201 of the depression of an installation self-checking function device 21, is provided with the web member 202 with the 21 direct socket connections of self-checking function device in mounting groove; Self-checking function device comprises housing 210, and housing 210 inner bottom parts are provided with wiring board 211, and wiring board 211 is provided with electronic component 214 and battery module 212, and wiring board 211 has the second web member 213 coordinating with web member 202.
Further, described detection module comprises self-inspection information storage module 22, transformer disconnection detection module 26, magnetic flux burn out detection module 27, electronic circuit board detection module 28, simulation test dropout module 29; Described self-inspection information storage module 22, transformer disconnection detection module 26, magnetic flux burn out detection module 27, electronic circuit board detection module 28, simulation test dropout module 29 are all connected with controller chip MCU, and controlled device chip MCU controls.
Further, described self-checking function device 21 comprises battery module 212, self-inspection opening module 216, supply module 217 boosts; Battery module 212 is connected with self-inspection opening module 216, and self-inspection opening module 216 connects and is connected with controller chip MCU; Battery module 212 is connected with the supply module 217 that boosts, and the supply module 217 that boosts is connected with the magnetic flow convertor of controller chip MCU and electronic breaker can simulate the test of threading off under off working state.
Further, the supply module 40 of inducting of described electronic controller is connected with magnetic flow convertor and the battery module 212 of controller chip MCU, electronic breaker, can be in working order lower for electronic controller 20 power supplies and battery module 212 charge, power taking battery module 212 when the off working state self-inspection as electronic controller 20, detection module and electronic breaker magnetic flow convertor.
Further, described self-inspection opening module 216 comprises switch T and power supply chip U24, the pin IN of power supply chip U24 is connected with one end of battery module 212 and switch T, the other end of switch T is connected with the positive pole of switching diode V6, and the negative pole of switching diode V6 is connected with the pin EN of power supply chip U24; Resistance R 95 is in parallel with capacitor C 45, one end ground connection in parallel, and the other end is connected with the positive pole of switching diode V6, and the positive pole of switching diode V6 is also connected with the pin BAT-IN of controller chip MCU; The pin EN of power supply chip U24 is connected with the pin BAT-EN of controller chip MCU, and the pin OUT of power supply chip U24 is connected with the positive pole of diode D13, and the negative pole of diode D13 is connected with the pin DVCC of controller chip MCU.
Further, the described supply module 217 that boosts comprises power supply chip U23 and the chip U22 that boosts, the pin IN of power supply chip U23 is connected with battery module 212, pin EN is connected with the pin BAT-EN1 of controller chip MCU, pin OUT is connected with the pin Vin of the chip U22 that boosts, the pin Vout of chip U22 of boosting is connected with the positive pole of diode D14, and the negative pole of diode D14 is connected with the magnetic flow convertor of electronic breaker.
Further, described in the supply module 40 of inducting comprise step-down chip U21, the input end PVCC of the supply module 40 of inducting is connected with the pin Vin of step-down chip U21, the positive pole of diode D15, the negative pole of diode D15 is connected with the magnetic flow convertor of electronic breaker; The pin Vout of step-down chip U21 is connected with the pin DVCC of controller chip MCU through diode D12, is connected with battery module 212 through diode D11, resistance R 96.
Electronic breaker of the present utility model; adopt Embedded self-checking function device; coordinate the testing circuit of detection module by built-in power supply; realize under off working state; the completeness of product protection function detects, and before making product complete, install and use in production or when product maintenance, user is without external any accessories of a product; the self-inspection button that only need press electronic breaker, test result be diagnosed and be provided to electronic breaker will to product function completeness automatically.
Brief description of the drawings
Fig. 1 is the outside drawing of the utility model electronic breaker;
Fig. 2 is the utility model electronic controller outside drawing;
Fig. 3 is the utility model self-checking function structure drawing of device;
Fig. 4 is the utility model electronic controller electrical principle block diagram;
Fig. 5 is the utility model self-checking function device electrical schematic diagram;
Fig. 6 is the self-inspection process flow diagram of the utility model electronic breaker.
Embodiment
The embodiment providing below in conjunction with accompanying drawing 1 to 5, further illustrates the embodiment of electronic breaker of the present utility model.Electronic breaker of the present utility model is not limited to the description of following examples.
As shown in Figure 1, electronic breaker 10 comprises housing, in housing, be provided with electronic controller 20, described electronic controller 20 comprises controller chip MCU, self-checking function device 21, pilot lamp 23, LCD display 24, navigation keyboard capable 25 and detection module, and described self-checking function device 21, pilot lamp 23, LCD display 24, navigation keyboard capable 25 and detection module are all connected with controller chip MCU.Described pilot lamp 23 and LCD display 24 are arranged on the middle part of electronic controller 20, and self-checking function device 21 and navigation keyboard capable 25 are separately positioned on the both sides of electronic controller 20.
As shown in Figure 2, be provided with the mounting groove 201 of an installation self-checking function device 21 in a side of electronic controller 20, in mounting groove, be provided with the web member 202 being connected with self-checking function device 21.The structure of self-checking function device 21 as shown in Figure 3, comprise housing 210, housing 210 inner bottom parts are provided with wiring board 211, wiring board 211 is provided with corresponding electronic component 214 and battery module 212, described battery module 212 is chargeable battery module, wiring board 211 has the web member 213 coordinating with web member 202, described self-checking function device 21 also comprises self-inspection button 215, described self-inspection button 215 is arranged on case top and connects in wiring board 211, can start the self-inspection of electronic breaker 10.Based on the setting of web member, self-checking function device 21 can be plugged so that safeguard.
As shown in Figure 4, self-checking function device 21, pilot lamp 23, LCD display 24, navigation keyboard capable 25 are all connected with controller chip MCU the circuit block diagram of the present embodiment electronic controller 20; Detection module comprises self-inspection information storage module 22, transformer disconnection detection module 26, magnetic flux burn out detection module 27, electronic circuit board detection module 28, simulation test dropout module 29; Described self-inspection information storage module 22, transformer disconnection detection module 26, magnetic flux burn out detection module 27, electronic circuit board detection module 28, simulation test dropout module 29 are all connected with controller chip MCU, and controlled device chip MCU controls.
The electronic controller 20 of the present embodiment is provided with Embedded self-checking function device 21; in self-checking function device 21, be also provided with battery module 212; can power for electronic controller 20; coordinate detection module; can be in the situation that not needing to increase any annex; the completeness that realizes product protection function under off working state detects; make user product can be installed to working line go forward to understand the completeness of product, the harmful effect due to product problem, circuit being caused when avoiding product to install.
The self-inspection process flow diagram of the present embodiment electronic breaker as shown in Figure 6, in the time pressing self-inspection button 215, controller chip MCU obtains electric startup from the battery module 212 of self-checking function device 21, first judge the duty of electronic breaker, as pointed out product to enter online self diagnostic mode in On-line self-diagnosis measurement information for duty, as pointed out product in off working state self-inspection measurement information and enter off working state self diagnostic mode for off working state.After judging that product working status is as off working state, show off working state self diagnosis mode of operation by pilot lamp 23 or LCD display 24.Under off working state self diagnostic mode, can directly show that the last time detection record being stored on self-inspection information storage module (22) does not start self diagnosis process; Start after self diagnosis process, whether controller chip MCU is normal by the mutual inductor state of transformer disconnection detection module 26 detected electrons formula isolating switchs, whether the state of the magnetic flux by magnetic flux burn out detection module 27 detected electrons formula isolating switchs is normal, whether the state by electronic circuit board detection module 28 detected electrons formula breaker electronic wiring boards is normal, can also carry out controller chip MCU from detecting; Can also simulate the test detected electrons formula isolating switch of threading off and can normally thread off by the simulation test module 29 of threading off, detect Time Controller chip MCU and control the supply module (217) that boosts and the low-voltage of battery module (212) is risen to the magnetic flow convertor action required voltage thresholding of electronic breaker is above to be tested simulate to thread off.In testing process, the testing result of modules shows report by pilot lamp 23 or LCD display 24, and every result parameter of detection also will be stored by self-inspection information storage module 22, checks record while facilitating user again to open self-inspection.Meanwhile, in testing process, self-diagnostic program also will be compared to electronic breaker protection feature parameter and default parameters, and allow user simulating after the test of threading off and can select directly carry out Protection parameters and reset according to test result.After testing process completes, electronic controller will, after the continuity work several seconds, cut off working power automatically.At electronic breaker in working, while being closing of power circuit breaker load current, in the time pressing self-inspection button 215, electronic controller rely on current transformer to induct energy work that power supply provides, and report online self-check program result by pilot lamp 23 or LCD display 24, and point out user whether to need simulation test to thread off.
As shown in Figure 5, self-checking function device 21 comprises battery module 212, self-inspection opening module 216 to the utility model self-checking function device electrical schematic diagram, supply module 217 boosts; Battery module 212 is connected with self-inspection opening module 216, and self-inspection opening module 216 connects and is connected with controller chip MCU, and battery module 212 can be for self-checking function device 21 and electronic controller 20 be powered under off working state; Battery module 212 is connected with the supply module 217 that boosts, and the supply module 217 that boosts is connected with the magnetic flow convertor of controller chip MCU and electronic breaker, can under off working state, simulate the test of threading off; The supply module 40 of inducting of electronic controller is connected with magnetic flow convertor and the battery module 212 of controller chip MCU, electronic breaker, powers in working order lower for electronic controller 20, also can be battery module 212 and charges.
Battery module 212 comprises battery BT1, battery BT1 one end ground connection, and the other end is connected with self-inspection opening module 216 and the supply module 217 that boosts, and battery BT1 is rechargeable battery.
Self-inspection opening module 216 comprises switch T and power supply chip U24, the pin IN of power supply chip U24 is connected with one end of battery module 212 and switch T, the other end of switch T is connected with the positive pole of switching diode V6, and the negative pole of switching diode V6 is connected with the pin EN of power supply chip U24; Resistance R 95 is in parallel with capacitor C 45, one end ground connection in parallel, and the other end is connected with the positive pole of switching diode V6, and the positive pole of switching diode V6 is also connected with the pin BAT-IN of controller chip MCU; The pin EN of power supply chip U24 is connected with the pin BAT-EN of controller chip MCU, and the pin OUT of power supply chip U24 is connected with the positive pole of diode D13, and the negative pole of diode D13 is connected with the pin DVCC of controller chip MCU.
The supply module 217 that boosts comprises power supply chip U23 and the chip U22 that boosts, the pin IN of power supply chip U23 is connected with battery module 212, pin EN is connected with the pin BAT-EN1 of controller chip MCU, pin OUT is connected with the pin Vin of the chip U22 that boosts, the pin Vout of chip U22 of boosting is connected with the positive pole of diode D14, and the negative pole of diode D14 is connected with the magnetic flow convertor of electronic breaker.
The supply module 40 of inducting comprises step-down chip U21, and the input end PVCC of the supply module 40 of inducting is connected with the pin Vin of step-down chip U21, the positive pole of diode D15, and the negative pole of diode D15 is connected with the magnetic flow convertor of electronic breaker; The pin Vout of step-down chip U21 is connected with the pin DVCC of controller chip MCU through diode D12, is connected with battery module 212 through diode D11, resistance R 96.
Be in off working state at electronic breaker, while being isolating switch no-load current, when press in self-inspection opening module 216 button T time, capacitor C 45 charges to rapidly cell potential energy storage, power supply chip U24 noble potential enables output, and controller chip MCU obtains electric startup.When button T discharges, capacitor C 45 starts electric discharge, on the A/D IN0 pin of controller chip MCU, does not detect while inducting supply module 40 power supply input signal, and controller chip MCU, by BAT-EN pin output high level signal, maintains battery module 212 and powers.
Controller chip MCU moves self-check program, controller chip MCU coordinate with each inspection module etc. carry out interactive mode detect, in testing process, the testing result of modules shows report by pilot lamp 23 or LCD display 24.In the time that needs are simulated dropout test, controller chip MCU exports high enable signal by BAT-EN1 pin, the power supply chip U23 in supply module 217 that boosts enables output, more than low-voltage is risen to electronic breaker magnetic flow convertor action required voltage thresholding by the chip U22 that boosts, when controller chip MCU by A/D IN1 pin senses to calculated signals when going out booster voltage and reaching requirement, BAT-EN1 pin output low level signal, shutoff is boosted, send magnetic flow convertor action command simultaneously, drive electronic breaker action.When self-check program has moved, controller chip MCU is by BAT-EN pin output low level signal, and power supply chip U24 stops output, turn-offs controller chip MCU power supply.
At electronic breaker in working, while being closing of power circuit breaker load current, the input end PVCC of supply module 40 of inducting provides the energy of being inducted from load current by current transformer via power circuit DC signal after treatment, it can be directly for the action of electronic breaker magnetic flow convertor provides energy, simultaneously after step-down chip U21 step-down, on the one hand for controller chip MCU etc. provides power supply, also for rechargeable battery module charges.At electronic breaker during in working, on the A/D IN0 pin of controller chip MCU, supply module 40 power supply input signals of inducting detected, judging the non-rechargeable battery module 212 of working power DVCC supplies with, when pressing button T in self-inspection opening module 216, controller chip MCU detects push button signalling by BAT-IN pin, the pilot lamp 23 of electronic breaker or LCD display will instruction electronic breaker On-line self-diagnosis state, maintain and return to normal work after the several seconds and show.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (8)
1. an electronic breaker with self-checking function, comprises Shell of circuit breaker, is provided with electronic controller (20) in Shell of circuit breaker, it is characterized in that:
Described electronic controller (20) comprises controller chip MCU, self-checking function device (21), pilot lamp (23), LCD display (24), navigation keyboard capable (25) and detection module, and described self-checking function device (21), pilot lamp (23), LCD display (24), navigation keyboard capable (25) and detection module are all connected with controller chip MCU; Described self-checking function device (21) is arranged in electronic controller (20), under off working state, do not need the external any annex of data line, can realize the off working state self-inspection of electronic breaker by the self-checking function device (21) of (20) in electronic controller, self-checking function device (21) is provided with self-inspection button (215), also comprises the battery module (212) that can power for electronic controller (20), detection module and electronic breaker magnetic flow convertor under off working state in described self-checking function device (21).
2. electronic breaker according to claim 1, is characterized in that:
One side of described electronic controller (20) is provided with the mounting groove (201) of the depression of an installation self-checking function device (21), is provided with and the directly web member (202) of socket connection of self-checking function device (21) in mounting groove; Self-checking function device comprises housing (210), housing (210) inner bottom part is provided with wiring board (211), wiring board (211) is provided with electronic component (214) and battery module (212), and wiring board (211) has the second web member (213) coordinating with web member (202).
3. electronic breaker according to claim 1, is characterized in that:
Described detection module comprises self-inspection information storage module (22), transformer disconnection detection module (26), magnetic flux burn out detection module (27), electronic circuit board detection module (28), simulation test dropout module (29); Described self-inspection information storage module (22), transformer disconnection detection module (26), magnetic flux burn out detection module (27), electronic circuit board detection module (28), simulation test dropout module (29) are all connected with controller chip MCU, and controlled device chip MCU controls.
4. electronic breaker according to claim 1, is characterized in that:
Described self-checking function device (21) comprises battery module (212), self-inspection opening module (216), the supply module that boosts (217); Battery module (212) is connected with self-inspection opening module (216), and self-inspection opening module (216) connects and is connected with controller chip MCU; Battery module (212) is connected with the supply module that boosts (217), and the supply module that boosts (217) is connected with the magnetic flow convertor of controller chip MCU and electronic breaker can simulate the test of threading off under off working state.
5. electronic breaker according to claim 4, it is characterized in that: the supply module of inducting (40) of described electronic controller is connected with the magnetic flow convertor of controller chip MCU, electronic breaker and battery module (212), can be in working order lower be electronic controller (20) power supply and battery module (212) charging, power taking battery module (212) when the off working state self-inspection as electronic controller (20), detection module and electronic breaker magnetic flow convertor.
6. electronic breaker according to claim 4, it is characterized in that: described self-inspection opening module (216) comprises switch T and power supply chip U24, the pin IN of power supply chip U24 is connected with one end of battery module (212) and switch T, the other end of switch T is connected with the positive pole of switching diode V6, and the negative pole of switching diode V6 is connected with the pin EN of power supply chip U24; Resistance R 95 is in parallel with capacitor C 45, one end ground connection in parallel, and the other end is connected with the positive pole of switching diode V6, and the positive pole of switching diode V6 is also connected with the pin BAT-IN of controller chip MCU; The pin EN of power supply chip U24 is connected with the pin BAT-EN of controller chip MCU, and the pin OUT of power supply chip U24 is connected with the positive pole of diode D13, and the negative pole of diode D13 is connected with the pin DVCC of controller chip MCU.
7. electronic breaker according to claim 4, it is characterized in that: the described supply module that boosts (217) comprises power supply chip U23 and the chip U22 that boosts, the pin IN of power supply chip U23 is connected with battery module (212), pin EN is connected with the pin BAT-EN1 of controller chip MCU, pin OUT is connected with the pin Vin of the chip U22 that boosts, the pin Vout of chip U22 of boosting is connected with the positive pole of diode D14, and the negative pole of diode D14 is connected with the magnetic flow convertor of electronic breaker.
8. electronic breaker according to claim 5, it is characterized in that: described in the supply module (40) of inducting comprise step-down chip U21, the induct input end PVCC of supply module (40) and the pin Vin of step-down chip U21, the positive pole of diode D15 is connected, and the negative pole of diode D15 is connected with the magnetic flow convertor of electronic breaker; The pin Vout of step-down chip U21 is connected with the pin DVCC of controller chip MCU through diode D12, is connected with battery module (212) through diode D11, resistance R 96.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023063.4U CN203786556U (en) | 2014-01-15 | 2014-01-15 | Electronic circuit breaker having self-detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023063.4U CN203786556U (en) | 2014-01-15 | 2014-01-15 | Electronic circuit breaker having self-detection function |
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| Publication Number | Publication Date |
|---|---|
| CN203786556U true CN203786556U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023063.4U Expired - Lifetime CN203786556U (en) | 2014-01-15 | 2014-01-15 | Electronic circuit breaker having self-detection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN203786556U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015067129A1 (en) * | 2013-11-08 | 2015-05-14 | 上海电科电器科技有限公司 | Self-test module of electronic circuit breaker |
| WO2016045607A1 (en) * | 2014-09-26 | 2016-03-31 | 上海电科电器科技有限公司 | Electronic trip unit protection device and protection method |
-
2014
- 2014-01-15 CN CN201420023063.4U patent/CN203786556U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015067129A1 (en) * | 2013-11-08 | 2015-05-14 | 上海电科电器科技有限公司 | Self-test module of electronic circuit breaker |
| US9797953B2 (en) | 2013-11-08 | 2017-10-24 | Seari Electric Technology Co., Ltd. | Self-test module of electronic circuit breaker |
| WO2016045607A1 (en) * | 2014-09-26 | 2016-03-31 | 上海电科电器科技有限公司 | Electronic trip unit protection device and protection method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of utility model: Electronic circuit breaker with self checking function Granted publication date: 20140820 License type: Common License Record date: 20211025 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |