CN103516053A - Outdoor lighting power distribution cabinet protection controller - Google Patents
Outdoor lighting power distribution cabinet protection controller Download PDFInfo
- Publication number
- CN103516053A CN103516053A CN201310485495.7A CN201310485495A CN103516053A CN 103516053 A CN103516053 A CN 103516053A CN 201310485495 A CN201310485495 A CN 201310485495A CN 103516053 A CN103516053 A CN 103516053A
- Authority
- CN
- China
- Prior art keywords
- distribution cabinet
- power distribution
- circuit
- control unit
- power
- 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
- 238000007654 immersion Methods 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000007600 charging Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000009413 insulation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an outdoor lighting power distribution cabinet protection controller which belongs to the field of a lighting system. According to the controller, a power supply input end is connected with an MCU control unit on a power supply circuit; a power supply output end of the power supply circuit is connected with an immersion detection circuit and a GPRS remote communication circuit. The signal input end of the MCU control unit is respectively connected with the immersion detection circuit and a voltage sampling circuit. The MCU control unit carries out remote communication with a control center through the GPRS remote communication circuit. The signal output end of the MCU control unit is connected with a relay module which controls on and off of a street light and the power supply of a power distribution cabinet. The signal input end of the MCU control unit is connected with a leakage detection circuit. The leakage detection circuit is provided with a transformer which is used for detecting the current of an input cable of the power distribution cabinet. The power supply circuit is connected with the commercial power. According to the invention, the problem of low power distribution cabinet security is solved; leakage of the power distribution cabinet is avoided; the field security of the power distribution cabinet is improved; and the controller can be used for street light management.
Description
Technical field
The present invention relates to a kind of illuminator, particularly a kind of light distribution cabinet.
Background technology
Along with the propelling of Urbanization in China, corresponding complete sets of basic equipment facility is also developed, the be dotted with night scene of city prosperity of road lighting and Landscape Lighting.Yet, these illuminators dangerous, often have a large amount of heavy rains after street lamp electric leakage cause loss of life or personal injury case.These accidents normally cause electric leakage to cause due to power distribution cabinet immersion or other reason water logging after heavy rain, study carefully its profound cause, can be attributed to the problems such as construction problem, aging circuit problem, natural calamity.These problems are normally difficult for discovery or very difficult prediction, once occur, probably cause the accident.Fortunately, some city street lamp authorities has paid attention to some extent and has taken some measures.
The first measure is to have used earth leakage circuit-breaker at street lamp power distribution cabinet, and the electric leakage allowable current of these switches is generally in 30mA, but in actual use procedure, switch is escape often, causes whole piece section street lamp to extinguish.Road lamp management personnel need promptly to rush to scene and again close a floodgate.Road lamp maintenance workload, job costs are further strengthened.
Why Road Lighting Power Distribution System electric leakage situation can be so serious, the environmental correclation of the distribution of this and street lamp.First these devices are arranged on open air, and the sweltering heat in summer and the cold in winter easily make wire insulation be destroyed; Secondly, high temperature, high humidity environment the oxidation of metal, also can destroy insulation except accelerating, once and insulation is destroyed, will be on the rise, finally lose insulation; Have, relevant to construction level and construction quality, when circuit cable installation in pipe, bad sealing can cause water inlet in penetration pipe again, and wire steeps for a long time in water, and insulation is difficult to guarantee.In some area, these wires just do not have cable installation in pipe even at all especially; The 4th, road construction, garden layout, heat supply, steam line construction etc. also can destroy the insulation of original circuit having laid.
For these reasons, the electric leakage escape of 30mA is controlled and cannot be met street lamp distribution present situation at all.Whether the leakage current of usining is greater than 30mA is science as the power supply of cutting off this circuit, but incompatible with domestic street lamp power supply, road lamp power supply present situation, irregular extensive replacing cable needs fund and manpower, should not in outdoor Road Lighting Power Distribution System, be able to extensive popularization.
The second measure be power distribution cabinet (case) respectively export branch road in install adjustable Aftercurrent protecting equipment additional, by detecting the instantaneous inflow of each branch road and flowing out electric current difference, judge whether electric leakage, the difference of it and the first measure is:
The leakage current protection threshold value of the first measure is definite value, is conventionally less than 30mA;
The leakage current protection threshold value of the second measure can artificially be set, more than being generally 100mA.
The advantage of the second measure is:
Can this device still can be used in system by adjusting leakage current protection threshold value, although be a half-way house, but still can screen the circuit of serious electric leakage by this device.
Its shortcoming is:
1. this type earth leakage protective device mostly is local setting, surpasses after setting threshold, and switch jump, needs human intervention, to on-site manual Closing Switch.
Leakage current value not teletransmission to control centre, be unfavorable for the control of overall power transmission and distribution situation and management.
Therefore, the second measure, also in elementary earth leakage protective measure, needs further perfect.Moreover, analyze numerous accidents, the reason majority of electric shock is water logging power distribution cabinet or cable exposed section more than water logging ground after heavy rain.So we should address detection and the problem of cutting off the electricity supply after power distribution cabinet water inlet, and are aided with leakage current test, solution power distribution cabinet electric leakage problem that like this could be more real.
Summary of the invention
The object of this invention is to provide a kind of outdoor lighting power distribution cabinet protection controller, solve the lower problem of power distribution cabinet fail safe of the prior art, avoid power distribution cabinet electric leakage, improve the fail safe at power distribution cabinet scene.
The object of the present invention is achieved like this: a kind of outdoor lighting power distribution cabinet protection controller, comprise a modular MCU control unit, the power input of described MCU control unit is connected on power circuit, the power output end of described power circuit is connected to immersion and detects on testing circuit and GPRS long-distance communication circuit, the signal input part of described MCU control unit is connected with the immersion signal output part of testing circuit and the signal output part of voltage sampling circuit respectively, described MCU control unit carries out telecommunication by GPRS long-distance communication circuit and control centre, the signal output part of described MCU control unit is connected with the relay module of controlling street lamp light on and off and power distribution cabinet power supply, the signal input part of described MCU control unit is also connected with leakage detecting circuit, in described leakage detecting circuit, be provided with the instrument transformer that leaks power distribution cabinet input cable place electric current in order to detect, described power circuit connects on civil power.
When the present invention works, power circuit converts civil power to corresponding DC power supply for immersion testing circuit, MCU control unit, relay module and the power supply of GPRS long-distance communication circuit, make it obtain electric work, when power distribution cabinet is intake, water level rises until trigger the work of immersion testing circuit, immersion testing circuit sends immersion signal to MCU control unit, and MCU control unit sends power-off signal to relay module, by relay module, closes street lamp;
Leakage current detection circuit in the present invention is for detection of the levels of leakage of total input or branch road, when leakage current is greater than the threshold value of setting, MCU control unit can be given an order to relay module, turn-offs power distribution cabinet power supply input by relay module, and system is set to safe condition;
Voltage sampling circuit in the present invention is for Gather and input voltage signal, during work, AC signal is become to the discernible isolation signals of MCU control unit, MCU control unit is by analyzing this signal, differentiate input voltage whether within rated range, if input voltage over range, MCU control unit can be given an order to relay module, controls power distribution cabinet power remove, reaches the object of the interior device of protection power distribution cabinet and light fixture;
The effect of the GPRS long-distance communication circuit in the present invention is that the information in power distribution cabinet is sent to far-end control centre, simultaneously, it also receives the instruction that comes from control centre, therefore ， control centre can be directly that each branch road leakage current higher limit is set at any time and revises to input voltage threshold range, major loop.Meanwhile, can pass through the switch of relay module Long-distance Control street lamp.
Compared with prior art, beneficial effect of the present invention is: the present invention effectively avoids by the use testing circuit that soaks the electric shock security incident causing due to water logging power distribution cabinet; By leakage current test loop is set, understand in time aging circuit degree, guarantee Electrical Safety; By voltage sampling circuit is set, understand in time the problem whether input voltage occurs that under-voltage, overvoltage, zero line are lost, protected other device in light fixture and circuit, extend its useful life; By being set, GPRS long-distance communication circuit and control centre carry out remote data communication, server through control centre place is comprehensively analyzed, the data such as warning message, data message are provided for administrative staff, make the management of street lamp convenient, efficient, improve the automaticity of road lamp management, by street lamp power distribution cabinet being carried out to Long-distance Control according to sun set/raise time, Bing Ke control centre directly sets, revises input voltage threshold range and leakage current higher limit, the management of street lamp is become to more flexible, saved a large amount of human and material resources.The present invention can be used in road lamp management.
Fail safe while working for further the present invention, simplifies immersion testing circuit structure, and described immersion testing circuit comprises immersion detection terminal, high-impedance resistors, charging capacitor and isolation optocoupler.As long as there is water to enter power distribution cabinet during work, and water level arrives certain altitude, touch immersion detection terminal, immersion terminal vanishing current potential, charges to the internal capacitance of testing circuit with the electric current below 0.4mA by isolation capacitance, high-impedance resistors, and this electric capacity reaches after certain voltage, by light-coupled isolation, signal to MCU control unit, MCU control unit sends immediately and cuts off general supply instruction, effectively avoids the contact security incident causing due to water logging power distribution cabinet
In order to improve the reliability of work of the present invention, described GPRS long-distance communication circuit is also connected with storage battery.Can guarantee that control centre and power distribution cabinet keep communicating by letter, not affected by field power supply, avoid the problem that control centre cannot communicate by letter with power distribution cabinet after field power supply power-off.
In order to make power distribution cabinet field control convenient reliable, described relay module comprises a relay of controlling the relay street lamp light on and off corresponding to some control of power distribution cabinet power supply.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present invention.
Fig. 2 is distribution box electrical wiring schematic diagram of the present invention.
Fig. 3 is the testing circuit schematic diagram that soaks in the present invention.
Embodiment
A kind of outdoor lighting power distribution cabinet protection controller as Figure 1-3, comprise a modular MCU control unit, the power input of MCU control unit is connected on power circuit, the power output end of power circuit is connected to immersion and detects testing circuit and GPRS long-distance communication circuit, the signal input part of MCU control unit is connected with the immersion signal output part of testing circuit and the signal output part of voltage sampling circuit respectively, MCU control unit carries out telecommunication by GPRS long-distance communication circuit and control centre, the signal output part of MCU control unit is connected with the relay module of controlling street lamp light on and off and power distribution cabinet power supply, the signal input part of MCU control unit is also connected with leakage detecting circuit, in leakage detecting circuit, be provided with the instrument transformer that leaks power distribution cabinet input cable place electric current in order to detect, power circuit connects on civil power, GPRS long-distance communication circuit is also connected with storage battery, relay module comprises a relay of controlling total input relay street lamp light on and off corresponding to some control of power distribution cabinet power supply, immersion testing circuit comprises immersion detection terminal CN1-2T, high-impedance resistors R42, charging capacitor C13 and isolation optocoupler OP7.
Under normal circumstances; 3 phase 380V civil powers are linked into terminal X0; by the extremely total input of switch QF0 contactor 0KM end of incoming cables; after lighting time arrives; control centre sends the instruction of turning on light; the GPRS of protection controller inside receives this instruction; and pass to the MCU control unit of protection controller inside; MCU control unit sends instruction to the relay K A1 of protection controller inside, and relay K A1 is closed, and electric current flows through the coil of contactor 0KM; contacts of contactor 0KM1 is thereupon closed; civil power is to contact 1KM1,2KM1, the end of incoming cables of 3KM1.Same said process, contact 1KM1,2KM1,3KM1 Ye Keyou control centre sends instruction closure or disconnects, and makes the light fixture that is connected on the sub-position of corresponding output end light or extinguish, and realizes at control centre's remote control switch lamp.
The U of protection controller, V, W, the power supply access point that N is controller, is also line voltage sampled point.When input voltage is during higher than the higher limit of setting or lower than lower limit, be device in protection light fixture and power distribution cabinet, the MCU control unit of protection controller inside sends instruction; disconnect relay K A1; contactor 0KM dead electricity, contact 0KM1 also disconnects thereupon, and the lead-out terminal of power distribution cabinet will be no longer charged.
In power distribution cabinet, there is an immersion detection line self-shield controller to draw, being connected to the sub-20cm of cabinet internal output terminal locates below, on immersion detection line, be connected with immersion detection terminal CN1-2T, this immersion detection line is connected in the immersion testing circuit of protection controller inside, metering function due to series capacitance and resistance, its maximum current is only 0.4mA, human body is perfectly safe, once after power distribution cabinet immersion, when water level is to this immersion detection terminal CN1-2T place, immersion detection terminal CN1-2T vanishing current potential, charge inside capacitor C 13 chargings to testing circuit with the electric current below 0.4mA by high-impedance resistors R42, this capacitor C 13 reaches after certain voltage, by optocoupler OP7, isolate, signal to MCU control unit, in protection controller, MCU control unit is identified this signal, send instruction, disconnect relay K A1, make contactor 0KM dead electricity, contact 0KM1 disconnects, power distribution cabinet lead-out terminal will be no longer charged, even if water flooding is to power distribution cabinet lead-out terminal place, owing to having disconnected civil power input, near guaranteed to paddle pedestrian's safety power distribution cabinet.
In power distribution cabinet input, residual current detection instrument transformer H1 is installed at cable place, this instrument transformer H1 receives 1 position, leakage current test loop of protection controller, instrument transformer H1 is for detection of leakage current, MCU control unit carries out grading control according to the leakage current detecting, if leakage current is between 10-50mA time, only send to control centre, as general alarm, be shown on control centre's server; If leakage current is between 50-100mA time, by data remote, what on data center server, show will be high severity alarm, need send technical staff to go to Solve on site problem; If leakage current is when 100mA is above; MCU control unit in protection controller sends instruction immediately; disconnect the relay K A1 in protection controller; and then make contactor 0KM dead electricity; contact 0KM1 disconnects; reach the object of cutting off power distribution cabinet power supply, send this serious information of reporting to the police to control centre simultaneously, notification technique personnel go to Solve on site fault.
Consider that each city or area are different to the requirement of leakage current, above-mentioned " general alarm ", " seriously reporting to the police ", the threshold value of fault alarm is control centre's remote setting again, makes the change of control program more flexible.
In addition; because we only detect the electric leakage situation of the total input of civil power conventionally conventionally; and the generation of electric leakage to be probably the electric leakage of a certain branch road cause; differentiate when specifically which bar branch road leaks electricity; leakage current test instrument transformer 2 positions that open type leakage current transformer can be connected on to protection controller, check each loop successively.Certainly, leakage current transformer also can be directly installed in each branch road position, in real time each branch road leakage current be detected.
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.
Claims (4)
1. an outdoor lighting power distribution cabinet protection controller, it is characterized in that, comprise a modular MCU control unit, the power input of described MCU control unit is connected on power circuit, the power output end of described power circuit is connected to immersion and detects on testing circuit and GPRS long-distance communication circuit, the signal input part of described MCU control unit is connected with the immersion signal output part of testing circuit and the signal output part of voltage sampling circuit respectively, described MCU control unit carries out telecommunication by GPRS long-distance communication circuit and control centre, the signal output part of described MCU control unit is connected with the relay module of controlling street lamp light on and off and power distribution cabinet power supply, the signal input part of described MCU control unit is also connected with leakage detecting circuit, in described leakage detecting circuit, be provided with the instrument transformer that leaks power distribution cabinet input cable place electric current in order to detect, described power circuit connects on civil power.
2. a kind of outdoor lighting power distribution cabinet protection controller according to claim 1 and 2, is characterized in that, described immersion testing circuit comprises immersion detection terminal, isolation optocoupler, high-impedance resistors and charging capacitor.
3. a kind of outdoor lighting power distribution cabinet protection controller according to claim 1 and 2, is characterized in that, described GPRS long-distance communication circuit is also connected with storage battery.
4. a kind of outdoor lighting power distribution cabinet protection controller according to claim 1 and 2, is characterized in that, described relay module comprises a relay of controlling the relay street lamp light on and off corresponding to some control of power distribution cabinet power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485495.7A CN103516053B (en) | 2013-10-17 | 2013-10-17 | A kind of outdoor lighting power distribution cabinet protection controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310485495.7A CN103516053B (en) | 2013-10-17 | 2013-10-17 | A kind of outdoor lighting power distribution cabinet protection controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103516053A true CN103516053A (en) | 2014-01-15 |
| CN103516053B CN103516053B (en) | 2015-11-25 |
Family
ID=49898309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310485495.7A Expired - Fee Related CN103516053B (en) | 2013-10-17 | 2013-10-17 | A kind of outdoor lighting power distribution cabinet protection controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103516053B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283180A (en) * | 2014-09-09 | 2015-01-14 | 深圳华智测控技术有限公司 | Leakage detection protection device of street lamp and leakage detection protection method thereof |
| CN111766542A (en) * | 2016-02-10 | 2020-10-13 | 本德尔有限两合公司 | Method and device for detecting disconnection of a protective conductor connection |
| CN113363935A (en) * | 2021-06-21 | 2021-09-07 | 慈溪市一栋电子有限公司 | Leakage protector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202306222U (en) * | 2011-10-13 | 2012-07-04 | 嘉兴电力局 | Intelligent drainage system for cable layer of transformer substation |
| CN102769277A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Improved structure of safety protection device of low-voltage distribution cabinet |
| CN102958226A (en) * | 2011-08-24 | 2013-03-06 | 何义植 | System, device and method for intelligent centralized illuminating lamp control |
| CN203554069U (en) * | 2013-10-17 | 2014-04-16 | 塞里克鲁能源科技江苏有限公司 | An outdoor illumination power distribution cabinet protection controller |
-
2013
- 2013-10-17 CN CN201310485495.7A patent/CN103516053B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958226A (en) * | 2011-08-24 | 2013-03-06 | 何义植 | System, device and method for intelligent centralized illuminating lamp control |
| CN202306222U (en) * | 2011-10-13 | 2012-07-04 | 嘉兴电力局 | Intelligent drainage system for cable layer of transformer substation |
| CN102769277A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Improved structure of safety protection device of low-voltage distribution cabinet |
| CN203554069U (en) * | 2013-10-17 | 2014-04-16 | 塞里克鲁能源科技江苏有限公司 | An outdoor illumination power distribution cabinet protection controller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283180A (en) * | 2014-09-09 | 2015-01-14 | 深圳华智测控技术有限公司 | Leakage detection protection device of street lamp and leakage detection protection method thereof |
| CN104283180B (en) * | 2014-09-09 | 2017-05-31 | 深圳华智测控技术有限公司 | Street lamp detection and protection apparatus for leakage and its current leakage detection protection method |
| CN111766542A (en) * | 2016-02-10 | 2020-10-13 | 本德尔有限两合公司 | Method and device for detecting disconnection of a protective conductor connection |
| CN111766542B (en) * | 2016-02-10 | 2023-04-11 | 本德尔有限两合公司 | Method and device for detecting disconnection of a protective conductor connection |
| CN113363935A (en) * | 2021-06-21 | 2021-09-07 | 慈溪市一栋电子有限公司 | Leakage protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103516053B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738565B (en) | Adaptive fault indicator | |
| CN101908780B (en) | Intelligent remote monitoring box-type substation | |
| CN203554069U (en) | An outdoor illumination power distribution cabinet protection controller | |
| CN106405324B (en) | power transmission line on-line monitoring system adopting distributed power supply | |
| CN200969490Y (en) | Intelligent high-low voltage distribution switch cabinet | |
| CN104638768A (en) | Intelligent power distribution security control terminal based on residential electricity consumption | |
| CN203553628U (en) | Intelligent power box for base station | |
| CN103792505A (en) | Ground fault simulation device for electric power direct current system | |
| KR102034675B1 (en) | An apparatus and method for circuit breaker restoring by power failure detection remotely for battery charging system of electric vehicle | |
| CN106443293A (en) | Direct current ground fault online detection and alarm device | |
| CN106207964A (en) | A kind of illuminating line protector based on leakage current vector transient detection | |
| CN104614603A (en) | On-site protection device status detection system and detection method thereof | |
| CN103516053B (en) | A kind of outdoor lighting power distribution cabinet protection controller | |
| CN104124916A (en) | Power grid fault simulation test system movement detection device for high-altitude photovoltaic power station | |
| CN203690905U (en) | Insulation monitoring system for grounding photovoltaic power generation system | |
| CN103248003B (en) | The power supply input protector of outdoor integrated cabinet and method | |
| CN201708587U (en) | Intelligent digital automation distribution network system | |
| CN204089727U (en) | High aititude photovoltaic plant electric network fault simulated testing system mobile detection apparatus | |
| CN206710519U (en) | A kind of substation safety detection means | |
| CN109254223A (en) | Leak electricity short-circuit detection method, open circuit protection equipment, monitoring center, system | |
| CN206002627U (en) | A kind of DC ground fault on-line checking and alarm device | |
| CN203465374U (en) | Device for monitoring and positioning power distribution network faults | |
| CN208421132U (en) | A kind of current temperature and On-line Fault monitor | |
| CN117054932A (en) | Method for generating model of on-line monitoring device of secondary equipment of power operation and maintenance system | |
| CN203414566U (en) | Ultraviolet online monitoring system of high-voltage electric network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170628 Address after: 212215, No. 8 Mao Nan Road, Yangzhong Development Zone, Zhenjiang, Jiangsu Patentee after: Qi Peng Group Co.,Ltd. Address before: 212215 Jiangsu Province, Zhenjiang City Economic Development Zone of Yangzhong Port Road Branch Center Celik Lou energy technology Jiangsu Co. Ltd. Patentee before: SAILI KELU ENERGY TECHNOLOGY JIANGSU Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |