CN105914703A - Anti-thunder intelligent standby protector and protection method thereof - Google Patents
Anti-thunder intelligent standby protector and protection method thereof Download PDFInfo
- Publication number
- CN105914703A CN105914703A CN201610384921.1A CN201610384921A CN105914703A CN 105914703 A CN105914703 A CN 105914703A CN 201610384921 A CN201610384921 A CN 201610384921A CN 105914703 A CN105914703 A CN 105914703A
- Authority
- CN
- China
- Prior art keywords
- latching relay
- magnetic latching
- current
- circuit
- protection device
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an anti-thunder intelligent standby protector. The anti-thunder intelligent standby protector comprises a magnetic latching relay and a controller. The controller comprises a single-chip microcomputer and a current collection circuit, a timer circuit, a signal output circuit and a power supply circuit which are connected with the single-chip microcomputer. The current collection circuit is connected with an on-off loop of the magnetic latching relay. The signal output circuit is connected with a coil of the magnetic latching relay. The single-chip microcomputer is further connected with a button circuit. The invention further discloses a protection method of the anti-thunder intelligent standby protector. The controller is added to the magnetic latching relay, a current across the line is detected, when the current is determined to be a thunder current, the line is not switched off, and when the current is determined to be a power frequency current, the magnetic latching relay is triggered to be switched off in a set time, and the device is prevented from being burned by a large current flowing through the thunder protector.
Description
Technical field
The present invention relates to a kind of lightning protection intelligence back-up protection device and guard method thereof, belong to anti-thunder technical field.
Background technology
Lightning protection device is when in use; owing to deterioration or TOV overvoltage can cause product to burn in moment; during installing, require to install back-up protection device in lightning protection device front end; generally sky is opened or fuse; in actual applications, this back-up protection device can not bear the impact of big electric current, again can not quick disjunction in the case of certain power current; being broken in the case of often resulting in big lightning current, the situation causing lightning protection device to burn under power current occurs.
And magnetic latching relay is a kind of new type of relay grown up in recent years, it also it is a kind of switch automatically.The same with other electromagnetic relays, circuit is played turn on automatically and cutting action.Except that, the normally closed or normally open of magnetic latching relay is entirely the effect relying on permanent-magnet steel, and the conversion of its on off state is that the pulse electrical signal by one fixed width triggers and completes.
Although magnetic latching relay has been applied in a lot of fields, but in anti-thunder technical field, due to special performance and the difference of working method, existing magnetic latching relay cannot normally use.
Summary of the invention
The technical problem to be solved is to provide a kind of lightning protection intelligence back-up protection device and guard method thereof; by adding cartridge controller on magnetic latching relay; by detecting electric current in the line; when being judged to will not disconnect the when that lightning current flowing through; when being judged to power current; trigger magnetic latching relay to disconnect within the setting time, it is ensured that lightning protection device will not be flow through and burning apparatus because of there being big electric current.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of lightning protection intelligence back-up protection device; including magnetic latching relay and controller; described controller includes single-chip microcomputer and the current collection circuit, timer circuit, signal output apparatus and the power circuit that are connected with described single-chip microcomputer; described current collection circuit is connected with the break-make loop of described magnetic latching relay; described signal output apparatus is connected with the coil of described magnetic latching relay, and described single-chip microcomputer is also associated with key circuit.
Aforesaid a kind of lightning protection intelligence back-up protection device; it is characterized in that: on described single-chip microcomputer, be also associated with voltage collection circuit; it is connected by on-off circuit between described voltage collection circuit and the break-make loop of described magnetic latching relay, described single-chip microcomputer is also associated with counter circuit.
Aforesaid a kind of lightning protection intelligence back-up protection device, it is characterised in that: the coil of described magnetic latching relay is connected with described single-chip microcomputer also by hand control switch, and described single-chip microcomputer is also associated with indicator light circuit.
Aforesaid a kind of lightning protection intelligence back-up protection device, it is characterised in that: it is also associated with warning circuit and LCDs on described single-chip microcomputer.
Aforesaid a kind of lightning protection intelligence back-up protection device, it is characterised in that: described single-chip microcomputer is connected with PC by radio communication circuit.
The intelligent back-up protection device of aforesaid a kind of lightning protection, it is characterised in that: the contact of described magnetic latching relay is copper-tungsten material, and two relative surfaces be can be bonded to each other inclined plane.
Aforesaid a kind of lightning protection intelligence back-up protection device, it is characterised in that: the rotating shaft of the armature of described magnetic latching relay is arranged far from one end of described contact.
A kind of guard method utilizing a kind of lightning protection as aforesaid in claim intelligence back-up protection device, it is characterised in that: comprise the steps:
(1) manually control to switch off magnetic latching relay, and this intelligence back-up protection device is correctly installed to the front end of lightning protection device, close hand control switch after installation, make magnetic latching relay in running order；
(2) reference current value is set by key circuit；
(3) by the current value in the break-make loop of collection magnetic latching relay; when the current value collected exceedes setting value; during by timer; when the time that this current value exceedes setting value is more than the overcurrent reference time set, it is determined that this electric current is power current, sends signal by signal output apparatus; control the coil blackout of magnetic latching relay; so that two contacts separate, the break-make loop power-off of magnetic latching relay, it is achieved that the protection to lightning protection device；Provide alarm signal by warning circuit, in order to remind staff simultaneously；
(4) the big electric current that current value is kilo-ampere level gathered in the step (3), but the persistent period of this electric current less than setting value time, then judge this electric current as thunder-strike current, magnetic latching relay continues normal work.
The guard method of aforesaid a kind of lightning protection intelligence back-up protection device, it is characterized in that: in described step (2) while setting reference current, set reference voltage, in described step (3) while the current value in the break-make loop gathering magnetic latching relay, the magnitude of voltage in the break-make loop of magnetic latching relay is gathered by voltage collection circuit, when the magnitude of voltage collected exceedes the overvoltage reference time of setting, signal is sent by signal output apparatus, control the coil blackout of magnetic latching relay, when voltage drops to below setting value when, signal is sent by signal output apparatus, control the coil electricity of magnetic latching relay, magnetic latching relay is made to continue normal work.
The guard method of aforesaid a kind of lightning protection intelligence back-up protection device; it is characterized in that: the current reference value set in described step (2) is as 50mA-5A; the voltage reference value set is as 255V-800V, and the overcurrent reference time set is as 0.1s, and the overvoltage reference time set is as 50ms.
The invention has the beneficial effects as follows:
1, by adding cartridge controller on magnetic latching relay, by detecting electric current in the line, when being judged to will not disconnect the when that lightning current flowing through, when being judged to power current, trigger magnetic latching relay to disconnect within the setting time, it is ensured that lightning protection device will not be flow through and burning apparatus because of there being big electric current；
2, by detecting voltage in the line, when the voltage detected exceedes setting value, and when reaching certain duration, trigger magnetic latching relay to disconnect within the setting time, when detect voltage return to setting value once time, magnetic latching relay Guan Bi is triggered, it is ensured that lightning protection device will not be made because of big voltage and burning apparatus from new；
3, by the contact of magnetic latching relay is used tungsten-copper alloy, ensureing when there being lightning current to pass through, contact also will not burn out, and uses relative inclined design, ensure can sufficiently contact in face between two contacts, it is to avoid cause because of point cantact electric current at contact excessive and burn out；
4, by the rotating shaft of magnetic latching relay being arranged far from one end of described contact, just rapidly two contacts can be separated by lever principle in the moment of switching coil electric current, it is ensured that do not result in the damage of lightning protection device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the magnetic latching relay of a kind of lightning protection of present invention intelligence back-up protection device；
Fig. 2 is the module connection diagram of the controller of a kind of lightning protection of present invention intelligence back-up protection device.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described further.
As depicted in figs. 1 and 2; a kind of lightning protection intelligence back-up protection device; including magnetic latching relay 1 and controller; described controller includes single-chip microcomputer and the current collection circuit, timer circuit, signal output apparatus and the power circuit that are connected with described single-chip microcomputer; described current collection circuit is connected with the break-make loop of described magnetic latching relay 1; described signal output apparatus is connected with the coil of described magnetic latching relay 1, and described single-chip microcomputer is also associated with key circuit.
Can set current reference value and overcurrent reference time by key circuit, the current reference value in the present embodiment is adjustable between 50mA-5A, and the overcurrent reference time is 0.1s, it is possible to need to be adjusted correspondingly according to the time.By detecting electric current in the line, but when the electric current in circuit is tens kilo-amperes or the dash current persistent period of kilo-ampere more than 100 is less than 50ms when, it is judged to lightning current, when lightning current flows through when, magnetic latching relay 1 will not disconnect, when the current value collected exceedes the value of setting, and when judging that the time is more than 0.1s by timer circuit, it is judged to power current, triggers magnetic latching relay and disconnect within the setting time, it is ensured that lightning protection device will not be flow through and burning apparatus because of there being big electric current.
It is also associated with voltage collection circuit on described single-chip microcomputer, is connected by on-off circuit between described voltage collection circuit and the break-make loop of described magnetic latching relay 1, described single-chip microcomputer is also associated with counter circuit.
Can be with setting voltage reference value and overvoltage reference time by key circuit, the voltage reference value in the present embodiment is 255V-800V, and the overcurrent reference time is 50ms, it is possible to need to be adjusted correspondingly according to the time.Can choose whether circuit is carried out voltage acquisition by on-off circuit, when the switch is closed, detect voltage in the line, when the voltage detected exceedes setting value, and when reaching more than 50ms, trigger magnetic latching relay disconnect within the setting time, when detect voltage return to setting value once time, magnetic latching relay Guan Bi is triggered, it is ensured that lightning protection device will not be made because of big voltage and burning apparatus from new.And by enumerator, the number of times of overvoltage is recorded.
Described single-chip microcomputer is connected with PC by radio communication circuit, and the data that single-chip microcomputer collects can be sent to long-range PC end, can also remotely control this intelligence back-up protection device by PC end simultaneously.
It is also associated with warning circuit and LCDs on described single-chip microcomputer, all kinds of parameters of setting can be shown by LCDs, when electric current or voltage exceed setting value, and when reaching the duration set, reported to the police by warning circuit, to point out staff.
The coil of described magnetic latching relay 1 is connected with described single-chip microcomputer also by hand control switch, and described single-chip microcomputer is also associated with indicator light circuit.Manually controlling switch can disconnect or closed magnetic guard relay, can not lean on remotely or program makes magnetic latching relay action when of manually disconnection, arrange two display lamps simultaneously, the Guan Bi of display product is also off.The when of being easy to after mounting for protector, it is in off-position, improves safety when installation.
The contact 2 of described magnetic latching relay 1 is copper-tungsten material, and two relative surfaces be can be bonded to each other inclined plane, ensure when there being lightning current to pass through, contact also will not burn out, and use relative inclined design, ensure can sufficiently contact in face between two contacts, it is to avoid cause because of point cantact electric current at contact excessive and burn out.
The rotating shaft 3 of the armature 4 holding relay 1 is arranged far from one end of described contact 2.Just rapidly two contacts can be separated by lever principle in the moment of switching coil electric current, it is ensured that do not result in the damage of lightning protection device.
Present invention also offers profit and require the guard method of a kind of lightning protection intelligence back-up protection device; comprise the steps: that (1) manually controls to switch off magnetic latching relay; and this intelligence back-up protection device is correctly installed to the front end of lightning protection device; close hand control switch after installation, make magnetic latching relay in running order；(2) reference current value is set by key circuit；(3) by the current value in the break-make loop of collection magnetic latching relay; when the current value collected exceedes setting value; during by timer; when the time that this current value exceedes setting value is more than the overcurrent reference time set, it is determined that this electric current is power current, sends signal by signal output apparatus; control the coil blackout of magnetic latching relay; so that two contacts separate, the break-make loop power-off of magnetic latching relay, it is achieved that the protection to lightning protection device；Provide alarm signal by warning circuit, in order to remind staff simultaneously；(4) the big electric current that current value is kilo-ampere level gathered in the step (3), but the persistent period of this electric current less than setting value time, then judge this electric current as thunder-strike current, magnetic latching relay continues normal work.
Wherein, in described step (2) while setting reference current, reference voltage can also be set, in described step (3) while the current value in the break-make loop gathering magnetic latching relay, the magnitude of voltage in the break-make loop of magnetic latching relay is gathered by voltage collection circuit, when the magnitude of voltage collected exceedes the overvoltage reference time of setting, signal is sent by signal output apparatus, control the coil blackout of magnetic latching relay, when voltage drops to below setting value when, signal is sent by signal output apparatus, control the coil electricity of magnetic latching relay, magnetic latching relay is made to continue normal work.
In the present embodiment, the current reference value set in step (2) is as 50mA-5A, and the voltage reference value set is as 255V-800V, and the overcurrent reference time set is as 0.1s, and the overvoltage reference time set is as 50ms.
In sum; a kind of lightning protection intelligence back-up protection device that the present invention provides; a kind of lightning protection intelligence back-up protection device and guard method thereof; by adding cartridge controller on magnetic latching relay; by detecting electric current in the line, when being judged to will not disconnect, when being judged to power current when that lightning current flowing through; trigger magnetic latching relay to disconnect within the setting time, it is ensured that lightning protection device will not be flow through and burning apparatus because of there being big electric current.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is by appending claims and equivalent circle thereof.
Claims (10)
1. a lightning protection intelligence back-up protection device; it is characterized in that: include magnetic latching relay (1) and controller; described controller includes single-chip microcomputer and the current collection circuit, timer circuit, signal output apparatus and the power circuit that are connected with described single-chip microcomputer; described current collection circuit is connected with the break-make loop of described magnetic latching relay (1); described signal output apparatus is connected with the coil of described magnetic latching relay (1), and described single-chip microcomputer is also associated with key circuit.
A kind of lightning protection intelligence back-up protection device the most according to claim 1; it is characterized in that: on described single-chip microcomputer, be also associated with voltage collection circuit; it is connected by on-off circuit between described voltage collection circuit and the break-make loop of described magnetic latching relay (1), described single-chip microcomputer is also associated with counter circuit.
A kind of lightning protection intelligence back-up protection device the most according to claim 1, it is characterised in that: the coil of described magnetic latching relay (1) is connected with described single-chip microcomputer also by hand control switch, and described single-chip microcomputer is also associated with indicator light circuit.
4. according to a kind of lightning protection intelligence back-up protection device described in any one in claim 1-3, it is characterised in that: it is also associated with warning circuit and LCDs on described single-chip microcomputer.
A kind of lightning protection intelligence back-up protection device the most according to claim 4, it is characterised in that: described single-chip microcomputer is connected with PC by radio communication circuit.
The intelligent back-up protection device of a kind of lightning protection the most according to claim 5, it is characterised in that: the contact (2) of described magnetic latching relay (1) is copper-tungsten material, and two relative surfaces be can be bonded to each other inclined plane.
A kind of lightning protection intelligence back-up protection device the most according to claim 6, it is characterised in that: the rotating shaft (3) of the armature (4) of described magnetic latching relay (1) is arranged far from one end of described contact (2).
8. the guard method of a kind of lightning protection intelligence back-up protection device that a kind utilizes as described in any one in claim 1-7, it is characterised in that: comprise the steps:
(1) manually control to switch off magnetic latching relay, and this intelligence back-up protection device is correctly installed to the front end of lightning protection device, close hand control switch after installation, make magnetic latching relay in running order；
(2) reference current value is set by key circuit；
(3) by the current value in the break-make loop of collection magnetic latching relay; when the current value collected exceedes setting value; during by timer; when the time that this current value exceedes setting value is more than the overcurrent reference time set, it is determined that this electric current is power current, sends signal by signal output apparatus; control the coil blackout of magnetic latching relay; so that two contacts separate, the break-make loop power-off of magnetic latching relay, it is achieved that the protection to lightning protection device；Provide alarm signal by warning circuit, in order to remind staff simultaneously；
(4) the big electric current that current value is kilo-ampere level gathered in the step (3), but the persistent period of this electric current less than setting value time, then judge this electric current as thunder-strike current, magnetic latching relay continues normal work.
The guard method of a kind of lightning protection the most according to claim 8 intelligence back-up protection device, it is characterized in that: in described step (2) while setting reference current, set reference voltage, in described step (3) while the current value in the break-make loop gathering magnetic latching relay, the magnitude of voltage in the break-make loop of magnetic latching relay is gathered by voltage collection circuit, when the magnitude of voltage collected exceedes the overvoltage reference time of setting, signal is sent by signal output apparatus, control the coil blackout of magnetic latching relay, when voltage drops to below setting value when, signal is sent by signal output apparatus, control the coil electricity of magnetic latching relay, magnetic latching relay is made to continue normal work.
The guard method of a kind of lightning protection the most according to claim 9 intelligence back-up protection device; it is characterized in that: the current reference value set in described step (2) is as 50mA-5A; the voltage reference value set is as 255V-800V; and the overcurrent reference time set is as 0.1s, the overvoltage reference time set is as 50ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384921.1A CN105914703B (en) | 2016-06-02 | 2016-06-02 | A kind of lightning protection intelligent back-up protection device and its guard method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384921.1A CN105914703B (en) | 2016-06-02 | 2016-06-02 | A kind of lightning protection intelligent back-up protection device and its guard method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105914703A true CN105914703A (en) | 2016-08-31 |
| CN105914703B CN105914703B (en) | 2019-03-05 |
Family
ID=56743092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610384921.1A Active CN105914703B (en) | 2016-06-02 | 2016-06-02 | A kind of lightning protection intelligent back-up protection device and its guard method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105914703B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329507A (en) * | 2016-10-15 | 2017-01-11 | 浙江雷源电气有限公司 | SCB (special circuit breaker) backup protector and control method thereof |
| CN109959830A (en) * | 2017-12-26 | 2019-07-02 | 中国移动通信集团四川有限公司 | Lightning protection device monitoring device and monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202586259U (en) * | 2012-05-23 | 2012-12-05 | 浙江洛凯电气有限公司 | Minisize intelligent electric leakage comprehensive protection switch |
| CN103236680A (en) * | 2013-04-16 | 2013-08-07 | 佛山市浦斯电子有限公司 | Intelligent protection device and method for surge protector |
| CN203632230U (en) * | 2013-10-08 | 2014-06-04 | 厦门赛尔特电子有限公司 | Surge protector with power frequency overvoltage protection function |
| CN205092570U (en) * | 2015-09-30 | 2016-03-16 | 广西地凯科技有限公司 | Integration shunting backup protection ware |
| CN105553018A (en) * | 2015-12-31 | 2016-05-04 | 浙江金源电气科技有限公司 | Wall-mounted transformer, and method thereof for charging of electric vehicles |
| CN205960622U (en) * | 2016-06-02 | 2017-02-15 | 浙江雷拓电气有限公司 | Lightning protection is with intelligent backup protection ware |
-
2016
- 2016-06-02 CN CN201610384921.1A patent/CN105914703B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202586259U (en) * | 2012-05-23 | 2012-12-05 | 浙江洛凯电气有限公司 | Minisize intelligent electric leakage comprehensive protection switch |
| CN103236680A (en) * | 2013-04-16 | 2013-08-07 | 佛山市浦斯电子有限公司 | Intelligent protection device and method for surge protector |
| CN203632230U (en) * | 2013-10-08 | 2014-06-04 | 厦门赛尔特电子有限公司 | Surge protector with power frequency overvoltage protection function |
| CN205092570U (en) * | 2015-09-30 | 2016-03-16 | 广西地凯科技有限公司 | Integration shunting backup protection ware |
| CN105553018A (en) * | 2015-12-31 | 2016-05-04 | 浙江金源电气科技有限公司 | Wall-mounted transformer, and method thereof for charging of electric vehicles |
| CN205960622U (en) * | 2016-06-02 | 2017-02-15 | 浙江雷拓电气有限公司 | Lightning protection is with intelligent backup protection ware |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329507A (en) * | 2016-10-15 | 2017-01-11 | 浙江雷源电气有限公司 | SCB (special circuit breaker) backup protector and control method thereof |
| CN109959830A (en) * | 2017-12-26 | 2019-07-02 | 中国移动通信集团四川有限公司 | Lightning protection device monitoring device and monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105914703B (en) | 2019-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103236680B (en) | surge protector intelligent protection device and surge protector intelligent protection method | |
| CN201402965Y (en) | Single-phase intelligent electricity utilization protecting device | |
| CN201656420U (en) | Three-phase auto reclosing electricity leakage protection switch | |
| CN106160231A (en) | A kind of power equipment remote monitoring system | |
| CN102332702A (en) | Intelligent real-time on-line displaying and controlling leakage protector and control method thereof | |
| CN105488931A (en) | Warning signal generation device, base station power device, and base station power system | |
| CN103701091A (en) | Electric leakage controller for circuit breaker | |
| CN105914703A (en) | Anti-thunder intelligent standby protector and protection method thereof | |
| CN203387160U (en) | Draught fan control circuit of high voltage frequency converter | |
| CN203617676U (en) | Burning loss prevention detection and protective device used for circuit breaker closing coil | |
| CN205960622U (en) | Lightning protection is with intelligent backup protection ware | |
| CN103380476A (en) | Residual-current-operated circuit breaker | |
| CN202059153U (en) | Leakage protector suitable for over-current inverse time lag protection circuit | |
| CN205123418U (en) | Intelligent distribution box | |
| CN204376254U (en) | Intelligent distribution box | |
| CN208272608U (en) | Overcurrent protection relay circuit and overcurrent protection relay | |
| CN203260995U (en) | Single-phase safety electricity-using appliance | |
| CN102904208A (en) | Leakage breaker | |
| CN106813342B (en) | Control method of infrared humidifying device and infrared humidifying device | |
| CN106449323B (en) | Automatic release device with the air gap lightning protection device | |
| CN202440103U (en) | Conveyer protective device | |
| CN202094599U (en) | Leakage protector adapted to electromagnetic trip circuit | |
| CN108963982A (en) | Appliances power source voltage protection circuit | |
| CN207559538U (en) | A kind of three-phase automatic reclosing device with wireless communication function | |
| CN203522132U (en) | Breaker electric leakage controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210315 Address after: 325603 Dagang village, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: SHANGHAI LEEYEE ELECTRIC Co.,Ltd. Address before: 325603 No.1 Xingye Road, Dagang village, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG LEITUO ELECTRIC Co.,Ltd. |
|
| TR01 | Transfer of patent right |