CN202066606U - Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof - Google Patents
Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof Download PDFInfo
- Publication number
- CN202066606U CN202066606U CN2011201419033U CN201120141903U CN202066606U CN 202066606 U CN202066606 U CN 202066606U CN 2011201419033 U CN2011201419033 U CN 2011201419033U CN 201120141903 U CN201120141903 U CN 201120141903U CN 202066606 U CN202066606 U CN 202066606U
- Authority
- CN
- China
- Prior art keywords
- contact arm
- module
- current
- isolating switch
- data
- 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
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses an intelligent temperature-measuring and current-measuring contact arm for a circuit breaker and an analysic system thereof. The contact arm comprises a contact arm body, an induction electrify-getting module, a temperature sensor, a current measuring coil, a signal conditioning module, a data processing module and a first wireless communication module, wherein, the induction electrify-getting module inducts and gets current, and provides a power supply; the temperature sensor is embedded in the contact arm body so as to detect the temperature of the contact area of the contact arm and a contact; the current measuring coil is nested on the contact arm body so as to detect the current passing through the contact arm, and is connected with the data processing module through the signal conditioning module; and the temperature sensor is connected with the data processing module further connected with the first wireless communication module. The analysic system further comprises a wireless terminal connected with the temperature-measuring and current-measuring contact arm and used for getting the temperature data and the current data through analysis. The analysic system can not only directly detect the temperature and current under high voltage, but also realize the data transmission, alarming and monitoring.
Description
Technical field
The utility model relates to isolating switch on-line monitoring field, relates to a kind of contact arm and analytic system thereof that is used for monitoring breaker major loop temperature and electric current in particular.
Background technology
Isolating switch is one of critical component that guarantees the electrical power trans mission/distribution system safe and reliable operation, and whether normal operation of circuit breaker is concerning the stability of electric system, therefore guarantees that the isolating switch reliability service is even more important.In circuit breaker failure and the accident, the too high problem that causes of major loop temperature rise is in occupation of certain proportion.
Isolating switch major loop temperature is too high or unusual, mainly is owing to the dynamic/static contact loose contact, and contact resistance increases, and causes loop temperature unusual.If fail in time to know this variation, continue operation, further aggravation heating and oxidation, produce vicious cycle, appearance such as fingertip fusing comes off, phenomenons such as contact burns, insulating material deterioration, and is last even can be on fire and accidents caused, seriously causes serious accidents such as switch blast.
At present, mainly be directly or indirectly to detect the major loop temperature rise: variable color sheet, infrared imaging and thermometry, bury temperature sensor thermometric and optical fiber temperature-measurement underground by plain conductor by following several means.For a long time, because the major loop (being mainly contact arm and contact) of isolating switch is in high potential environment always, under direct measuring condition, generally can't solve under High-Voltage Insulation, the high electronegative potential all kinds of problems such as electrical isolation, make that the on-line temperature monitoring of isolating switch major loop is a difficult problem always.
Along with development of technology, occurred the product of part on the market, but still there are some drawbacks in it to isolating switch major loop thermometric, such as:
One, is temperature to be measured singlely, can't understand the variation of contact arm in real time, can't reflect the relation of temperature rise and size of current practically, follow the tracks of and discriminatory analysis by electric current;
Two, the data that obtain are only shown on the display screen of switch cubicle low-pressure chamber, the area that partial dislocation is remote, because finite element network can't arrive, so temperature data can't in time transfer to and be positioned at long-range control center, the maintainer can't in time understand the isolating switch major loop temperature variation that is positioned at switch cubicle inside, thereby causes the problem of control and Maintenance and Repair inconvenience;
Three, for the short-distance wireless thermometric product that is used for concerned power on the market, the influence of the electromagnetic interference (EMI) that wireless signal produces when being subject to the isolating switch operation is especially closed in the branch process in voltage fluctuation and isolating switch.Its transmitting range and speed are too low simultaneously, and the temperature rise that can't in time be synchronized with the isolating switch major loop changes.
In view of this, the inventor has this case to produce at the above-mentioned defective further investigation in the existing isolating switch on-line monitoring technique then.
The utility model content
First purpose of the present utility model is to provide a kind of isolating switch intelligent temperature measurement to survey the electric current contact arm, the temperature and the electric current of isolating switch major loop under its energy measurement high voltage environment have the definite inadequately problem of monitoring information can only temperature be measured in the solution prior art singlely.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of isolating switch intelligent temperature measurement is surveyed the electric current contact arm, comprise the contact arm body, wherein, this intelligent temperature measurement is surveyed the electric current contact arm and is also comprised induction electricity-fetching module, temperature sensor, current measurement coil, signal condition module, data processing module and first wireless communication module, and this induction electricity-fetching module induction is obtained electric current and power supply is provided; This temperature sensor embeds and is arranged in the contact arm body and detects the temperature of contact arm with the contact contact area; This current measurement coil is nested on the contact arm body and measures electric current by contact arm; This current measurement coil links to each other with data processing module by the signal condition module, and this temperature sensor links to each other with data processing module, and this data processing module also links to each other with first wireless communication module.
Further, this current measurement coil is that measurement range is the Luo-coil of 0-5000A.
Further, this induction electricity-fetching module comprises current transformer and power protecting circuit, and this power protecting circuit links to each other with current transformer.
Further, this temperature sensor is the numeric type temperature sensor.
Second purpose of the present utility model is to provide a kind of isolating switch intelligent analysis system, and the direct measurement that it can not only be implemented in temperature and electric current under the high voltage can also realize transmission, warning and the monitoring of data.
In order to achieve the above object, this isolating switch intelligent analysis system comprises the wireless terminal that aforementioned thermometric is surveyed the electric current contact arm and is positioned at the isolating switch outside.
This wireless terminal, comprise second wireless communication module, data processing unit, data storage cell, man-machine interface and warning output unit, this data processing unit all links to each other with second wireless communication module, data storage cell, man-machine interface and warning output unit, and this second wireless communication module is communicated by letter with at least one first wireless communication module and temperature data and the current data that obtains transferred to data processing unit.
Further, this isolating switch intelligent analysis system also comprises the center analysis station, and this wireless terminal also comprises the data forwarding unit that links to each other with data processing unit, and this data forwarding unit also is provided with the communication interface that can intercom mutually with the center analysis station.
Further, this communication interface comprises RS-232, RS485, USB, Ethernet and mobile data network.
Further, this center analysis station adopts the SCADA system, and this SCADA system has the visual monitor interface of Web form.
After adopting said structure, a kind of isolating switch intelligent temperature measurement that the utility model relates to is surveyed electric current contact arm and analytic system thereof, and it has following effect at least:
One, this induction electricity-fetching module can obtain power supply voluntarily and be supplied to temperature sensor and first wireless communication module, thereby make this intelligent temperature measurement survey the electric current contact arm and can realize power supply voluntarily, avoided under the High Temperature High Pressure situation battery operated influence, and have can long-term work effect;
Two, this temperature sensor obtains temperature data, this current measurement coil then obtains current data, and pass through data processing module and handle afterwards and transfer out by first wireless communication module, owing to adopt the mode of radio communication, so can avoid the corresponding problem that high voltage differential brings between the isolating switch high and low pressure side, measure effect accurately thereby have;
Three, this wireless terminal receive and treatment temperature data and current data after, corresponding data can be presented on the man-machine interface and check, and simultaneously data storage be got up and become historical data for managerial personnel; This data processing unit also can be according to the running status of comprehensively judging isolating switch by the size and the temperature rise of contact arm electric current in addition, if exist unusually then the output unit of reporting to the police sends alerting signal.
Description of drawings
The structured flowchart of Fig. 1 a kind of isolating switch intelligent temperature measurement survey electric current contact arm preferred embodiment for the utility model relates to;
Fig. 2 is the inner structure block diagram of induction electricity-fetching module among Fig. 1;
The structural representation of Fig. 3 a kind of isolating switch intelligent analysis system for the utility model relates to;
Fig. 4 is the structured flowchart of wireless terminal among Fig. 3.
Among the figure:
Thermometric is surveyed electric current contact arm 10
Induction electricity-fetching module 11 current transformers 111
Current measurement coil 13 signal condition modules 14
Man-machine interface 24 warning output units 25
Embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
As shown in Figure 1, a kind of isolating switch intelligent temperature measurement that relates to for the utility model shown in it is surveyed electric current contact arm 10, comprises contact arm body (not shown), induction electricity-fetching module 11, temperature sensor 12, current measurement coil 13, signal condition module 14, data processing module 15 and first wireless communication module 16.
This responds to electricity-fetching module 11, and induction is obtained electric current and supplied with other parts that intelligent temperature measurement is surveyed electric current contact arm 10, such as specifically being supplied to temperature sensor 12, data processing module 15 and first wireless communication module 16; Concrete, as shown in Figure 2, this induction electricity-fetching module 11 comprises current transformer 111 and power protecting circuit 112, this power protecting circuit 112 links to each other with current transformer 111; This power protecting circuit 112 is used to prevent and suppresses surge phenomenons such as superpotential, excess current; By this induction electricity-fetching module 11, intelligent temperature measurement that the utility model relates to is surveyed electric current contact arm 10 and can be realized powering voluntarily, has avoided under the High Temperature High Pressure situation battery operated influence has been solved under the high voltage situation, the problem independently-powered to electronic circuit, thus the effect of energy long-term work had.
This temperature sensor 12, embedding is arranged in the contact arm body, thereby detects the temperature of contact arm with the contact contact area; Concrete, this temperature sensor 12 is preferably numeric type temperature sensor 12, thereby saved a large amount of peripheral circuits, greatly reduced the wiring board space, the output of digital signal simultaneously, when also having avoided isolating switch normally to move, high temperature and electromagnetic interference (EMI) are to the interference of direct collection measure analog temperature signal; This temperature sensor 12 directly links to each other with data processing module 15, and the temperature data that obtains is transferred to data processing module 15 processing.
This current measurement coil 13 is nested on the contact arm body, thereby measures the electric current by contact arm; Concrete, it is the Luo-coil of 0-5000A that this current measurement coil 13 is selected measurement range for use; After this current measurement coil 13 passes through 14 front-end processings of signal condition module, and link to each other, current data is transferred to data processing module 15 processing and finish with data processing module 15;
This first wireless communication module 16 links to each other with data processing module 15, and will adopt Wireless transmission mode to transfer out via temperature data and the current data that data processing module 15 is handled; Concrete, this first wireless communication module 16 is based on the wireless technology of 2.4GHz, it has the automatic frequency adjustment ability, and it is antenna integrated onboard, these first wireless communication module, 16 emissive powers are low, can not cause interference to the operation of other electronic equipments, and when normally moving, switchgear can communicate by letter reliably, thus, it need not to utilize wired connections such as any cable and optical fiber, thereby solved the direct communication issue of noble potential and electronegative potential, avoided Insulation Problems such as creepage simultaneously, thereby improved the accuracy of measuring greatly.
After 10 assemblings of whole intelligent temperature measurement survey electric current contact arm are finished, because the contact arm structure is basic identical in contact arm body and the prior art, so its mounting means is with existing identical, so be not described in detail.In addition, also marking on this contact arm body has globally unique ID number, is beneficial to the effect of safeguarding identification thereby have.
As shown in Figure 3 and Figure 4, a kind of isolating switch intelligent analysis system 100 that it relates to for the utility model, this intelligent analysis system 100 comprise the wireless terminal 20 that aforementioned thermometric is surveyed electric current contact arm 10 and is positioned at the isolating switch outside.Because thermometric is surveyed electric current contact arm 10 and is above fully being described, describe once more so will not survey electric current contact arm 10 inner structures, then the interactively between wireless terminal 20 and wireless terminal 20 and the thermometric survey electric current contact arm 10 be described in detail below thermometric:
As shown in Figure 4, this wireless terminal 20 comprises second wireless communication module 21, data processing unit 22, data storage cell 23, man-machine interface 24 and warning output unit 25.
This data processing unit 22 all links to each other with second wireless communication module 21, data storage cell 23, man-machine interface 24 and warning output unit 25, and this second wireless communication module 21 is communicated by letter with at least one first wireless communication module 16 and temperature data and the current data that obtains transferred to data processing unit 22.
This data processing unit 22 is handled temperature data and current data in real time and is compared, and it shows data in real time by man-machine interface 24 on the one hand, and gets up as history data store by data storage cell 23; By size and the temperature rise of flowing through the contact arm electric current are comprehensively judged, judge that the major loop that draws isolating switch has unusual condition on the other hand, then report to the police that this moment, managerial personnel should carry out interruption maintenance immediately by warning output unit 25.
As shown in Figure 3, this isolating switch intelligent analysis system 100 also comprises center analysis station 30, this wireless terminal 20 also comprises the data forwarding unit 26 that links to each other with data processing unit 22, this data forwarding unit 26 also is provided with the communication interface that can intercom mutually with center analysis station 30, this data forwarding unit 26 specifically also is a communication module, multiple wired and cordless communication network is supported in this data forwarding unit 26, concrete, this communication interface comprises RS-232, RS485, USB, Ethernet and mobile data network; 30 of this center analysis stations adopt the SCADA system, and these 26 inside, data forwarding unit can be embedded with the wireless data communications module, and it can be sent to remote data center in real time with enciphered data, do not have the problem that wired ethernet inserts thereby solved some areas.
This SCADA system has the visual monitor interface of Web form, so can realize temperature rise of remote online monitoring isolating switch and load current, and carries out advanced analysis and diagnosis; Simultaneously can survey that electric current contact arm 10 manage to wireless terminal 20, intelligent temperature measurement, configuration and software upgrading; Can also be equipped with client software in addition, and can directly communicate by letter and analyze with wireless terminal 20.
A kind of isolating switch intelligent temperature measurement that the utility model relates to is surveyed electric current contact arm 10 and analytic system thereof, and it can also be applied to induction power taking thermometrics such as busbar, cable and survey current domain.
The foregoing description and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (8)
1. an isolating switch intelligent temperature measurement is surveyed the electric current contact arm, comprise the contact arm body, it is characterized in that, this intelligent temperature measurement is surveyed the electric current contact arm and is also comprised induction electricity-fetching module, temperature sensor, current measurement coil, signal condition module, data processing module and first wireless communication module, and this induction electricity-fetching module induction is obtained electric current and power supply is provided; This temperature sensor embeds and is arranged in the contact arm body and detects the temperature of contact arm body; This current measurement coil is nested on the contact arm body and measures electric current by contact arm; This current measurement coil links to each other with data processing module by the signal condition module, and this temperature sensor links to each other with data processing module, and this data processing module also links to each other with first wireless communication module.
2. a kind of isolating switch intelligent temperature measurement as claimed in claim 1 is surveyed the electric current contact arm, it is characterized in that this current measurement coil is that measurement range is the Luo-coil of 0-5000A.
3. a kind of isolating switch intelligent temperature measurement as claimed in claim 1 is surveyed the electric current contact arm, it is characterized in that this induction electricity-fetching module comprises current transformer and power protecting circuit, and this power protecting circuit links to each other with current transformer.
4. a kind of isolating switch intelligent temperature measurement as claimed in claim 1 is surveyed the electric current contact arm, it is characterized in that this temperature sensor is the numeric type temperature sensor.
5. an isolating switch intelligent analysis system is characterized in that, comprises the wireless terminal of surveying the electric current contact arm and being positioned at the isolating switch outside as each described thermometric of claim 1 to 4; This wireless terminal comprises second wireless communication module, data processing unit, data storage cell, man-machine interface and warning output unit, this data processing unit all links to each other with second wireless communication module, data storage cell, man-machine interface and warning output unit, and this second wireless communication module is communicated by letter with at least one first wireless communication module and temperature data and the current data that obtains transferred to data processing unit.
6. a kind of isolating switch intelligent analysis system as claimed in claim 5, it is characterized in that, this isolating switch intelligent analysis system also comprises the center analysis station, this wireless terminal also comprises the data forwarding unit that links to each other with data processing unit, and this data forwarding unit also is provided with the communication interface that can intercom mutually with the center analysis station.
7. a kind of isolating switch intelligent analysis system as claimed in claim 6 is characterized in that this communication interface comprises RS-232, RS485, USB, Ethernet and mobile data network.
8. a kind of isolating switch intelligent analysis system as claimed in claim 6 is characterized in that, this center analysis station adopts the SCADA system, and this SCADA system has the visual monitor interface of Web form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201419033U CN202066606U (en) | 2011-05-06 | 2011-05-06 | Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201419033U CN202066606U (en) | 2011-05-06 | 2011-05-06 | Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066606U true CN202066606U (en) | 2011-12-07 |
Family
ID=45060467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201419033U Expired - Lifetime CN202066606U (en) | 2011-05-06 | 2011-05-06 | Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066606U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN103616586A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Low-voltage insulation and temperature detection device |
| CN103995170A (en) * | 2014-05-09 | 2014-08-20 | 安庆天瑞新材料科技股份有限公司 | Current detection and communication device for thermomagnetic breaker |
| CN104792427A (en) * | 2015-04-17 | 2015-07-22 | 厦门Abb开关有限公司 | Open type large-current contact arm temperature measurement device |
| CN104917142A (en) * | 2014-03-10 | 2015-09-16 | 艾默生网络能源系统北美公司 | Sampling circuit and monitoring device |
| CN107631808A (en) * | 2017-09-07 | 2018-01-26 | 郑州华力信息技术有限公司 | Temperature of high-tension switch cabinet inspection warning system extremely |
| CN108957219A (en) * | 2018-06-14 | 2018-12-07 | 山东卓尔电气有限公司 | A kind of fuse switch on-line fault monitoring method and device |
| CN110286265A (en) * | 2019-07-24 | 2019-09-27 | 四川电器集团股份有限公司 | Contact arm measure annular device for vacuum circuit breaker |
| CN111487449A (en) * | 2020-04-10 | 2020-08-04 | 北京迈驰电气技术有限公司 | Wireless intelligent low-voltage measuring terminal |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
| CN112304360A (en) * | 2019-08-02 | 2021-02-02 | 施耐德电器工业公司 | Apparatus for measuring operating parameters of electronic device and measuring method thereof |
-
2011
- 2011-05-06 CN CN2011201419033U patent/CN202066606U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN103542888B (en) * | 2013-09-27 | 2016-03-02 | 珠海鼎日电子科技有限公司 | The temperature of power equipment and electric current on-Line Monitor Device |
| CN103616586A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Low-voltage insulation and temperature detection device |
| CN104917142B (en) * | 2014-03-10 | 2017-12-29 | 艾默生网络能源系统北美公司 | A kind of sample circuit and monitoring device |
| CN104917142A (en) * | 2014-03-10 | 2015-09-16 | 艾默生网络能源系统北美公司 | Sampling circuit and monitoring device |
| CN103995170A (en) * | 2014-05-09 | 2014-08-20 | 安庆天瑞新材料科技股份有限公司 | Current detection and communication device for thermomagnetic breaker |
| CN104792427A (en) * | 2015-04-17 | 2015-07-22 | 厦门Abb开关有限公司 | Open type large-current contact arm temperature measurement device |
| CN107631808A (en) * | 2017-09-07 | 2018-01-26 | 郑州华力信息技术有限公司 | Temperature of high-tension switch cabinet inspection warning system extremely |
| CN108957219A (en) * | 2018-06-14 | 2018-12-07 | 山东卓尔电气有限公司 | A kind of fuse switch on-line fault monitoring method and device |
| CN110286265A (en) * | 2019-07-24 | 2019-09-27 | 四川电器集团股份有限公司 | Contact arm measure annular device for vacuum circuit breaker |
| CN110286265B (en) * | 2019-07-24 | 2024-05-10 | 河北杰能电气设备有限公司 | Contact arm measuring ring device for vacuum circuit breaker |
| CN112304360A (en) * | 2019-08-02 | 2021-02-02 | 施耐德电器工业公司 | Apparatus for measuring operating parameters of electronic device and measuring method thereof |
| CN111487449A (en) * | 2020-04-10 | 2020-08-04 | 北京迈驰电气技术有限公司 | Wireless intelligent low-voltage measuring terminal |
| CN112017873A (en) * | 2020-08-25 | 2020-12-01 | 王云保 | Circuit breaker integrated with wireless temperature measuring sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202066606U (en) | Intelligent temperature-measuring and current-measuring contact arm for circuit breaker and analysic system thereof | |
| US10794945B2 (en) | Method for detecting and locating single-phase ground fault on low current grounded power-distribution network | |
| US9823289B2 (en) | Automated digital earth fault system | |
| US10222409B2 (en) | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network | |
| CN103234645B (en) | A kind of distribution cable terminal on-line monitoring system and monitoring method | |
| CN201532262U (en) | High-voltage switch contact and bus on-line temperature measuring device | |
| CN102411119B (en) | Intelligent monitoring device for temperature and insulation state of 330KV high-voltage cable in hydropower station | |
| CN204758748U (en) | Cubical switchboard intelligent integrated monitoring devices | |
| CN102243285A (en) | Fault detection apparatus based on temperature and current analyses, and method thereof | |
| CN103398740A (en) | Real-time on-line monitoring device for monitoring abnormal operation of switch cabinet | |
| CN202024833U (en) | Cable joint accurate temperature measurement device based on radio frequency technique | |
| CN202276193U (en) | Intelligent switch cabinet integrating intelligent operation and control and microcomputer protection | |
| CN202814562U (en) | Wireless temperature measurement system for distribution network equipment | |
| CN202676298U (en) | Wireless transmission high-voltage cable on-line temperature measuring device | |
| CN203688080U (en) | Substation high-voltage switch cabinet temperature online monitoring device | |
| CN105446248A (en) | Power grid power distribution security auxiliary monitoring system | |
| CN111707913A (en) | Partial discharge detection device of power switch cabinet | |
| CN103323119A (en) | Online temperature measuring system of high-voltage switch cabinet of transformer substation | |
| CN202599561U (en) | On-line monitoring device for ring network cabinet | |
| CN206819531U (en) | A kind of cloud electricity takes data acquisition device | |
| CN102354440A (en) | Information acquisition device and online monitoring system for electric connection part | |
| CN202305048U (en) | On-line monitoring device for high voltage cable | |
| CN109357710A (en) | A kind of power distribution room operational system based on Internet of Things | |
| CN202110242U (en) | High voltage point fault real-time monitoring equipment based on magnetic coupling technology | |
| CN205263986U (en) | Electric fire monitoring and forewarning system based on point type temperature -sensing element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180306 Address after: Swiss Baden Brown Bofarui Street No. 6 Patentee after: ABB TECHNOLOGY LTD. Address before: 361000 Fujian Xiamen Torch High-tech Industrial Development Zone ABB Industrial Park Patentee before: Xiamen ABB Switchgear Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111207 |