CN107069675A - A kind of high-low pressure transformation cabinet leakage controller system and method - Google Patents

A kind of high-low pressure transformation cabinet leakage controller system and method Download PDF

Info

Publication number
CN107069675A
CN107069675A CN201710334918.3A CN201710334918A CN107069675A CN 107069675 A CN107069675 A CN 107069675A CN 201710334918 A CN201710334918 A CN 201710334918A CN 107069675 A CN107069675 A CN 107069675A
Authority
CN
China
Prior art keywords
module
transformation cabinet
control module
cabinet
temperature
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.)
Pending
Application number
CN201710334918.3A
Other languages
Chinese (zh)
Inventor
丁年红
丁年生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Happy Automation Machinery Co Ltd
Original Assignee
Wuhu Happy Automation Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhu Happy Automation Machinery Co Ltd filed Critical Wuhu Happy Automation Machinery Co Ltd
Priority to CN201710334918.3A priority Critical patent/CN107069675A/en
Publication of CN107069675A publication Critical patent/CN107069675A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24Circuit arrangements for boards or switchyards
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets

Abstract

The invention discloses a kind of high-low pressure transformation cabinet leakage controller system and method, including:Detection of electrical leakage module, for detecting transformation cabinet leakage current I;Temperature detecting module, for gathering power transformation in-cabinet temperature T;Ventilation module, is aerated for the instruction according to control module to transformation cabinet inside;Alarm module, information warning is sent for the instruction according to control module;Power-off modular, is turned off for the instruction according to control module to transformation cabinet internal electric source;Control module, communicated to connect with detection of electrical leakage module, temperature detecting module, control module detects transformation cabinet leakage current I by detection of electrical leakage module, gathers power transformation in-cabinet temperature T by temperature detecting module, and be compared I with predetermined current threshold, and acted according to comparative result instruction control alarm module, power-off modular;T is compared with preset temperature threshold value, and acted according to comparative result instruction control ventilation module, alarm module, power-off modular.

Description

A kind of high-low pressure transformation cabinet leakage controller system and method
Technical field
The present invention relates to transformation cabinet control technology field, more particularly to a kind of high-low pressure transformation cabinet leakage controller system and side Method.
Background technology
Transformation cabinet used at present is to incarnadine to be formed by connecting using sheet metal progress bending mostly, although this kind of structure can Needs are used to meet transformation cabinet to a certain degree, but the religion of its production technology is complexity, and structural strength is relatively low, so as to cause distribution The shock resistance of cabinet is poor, fragile, simultaneously because power distribution cabinet is operationally, installed in its internal each electric circuit equipment Higher heat can be produced, while also suffering from the influence of external environment condition humidity and ambient temperature, causes electric electricity The damage of pipeline equipment, triggers transformation cabinet internal electrical losses, so that the multiple location such as transformation cabinet outer container leaks electricity, often staff exists When operating transformation cabinet, in this case it is not apparent that transformation cabinet inner case, when transformation cabinet leaks electricity, it will bring puzzlement to staff Even life danger, when transformation cabinet leaks electricity, can cause transformation cabinet internal temperature to raise, so as to cause electric circuit equipment Burning, brings immeasurable loss.
The content of the invention
Based on background technology exist technical problem, the present invention propose a kind of high-low pressure transformation cabinet leakage controller system and Method.
High-low pressure transformation cabinet leakage controller system proposed by the present invention, including:
Detection of electrical leakage module, for detecting transformation cabinet leakage current I;
Temperature detecting module, for gathering power transformation in-cabinet temperature T;
Ventilation module, communicates to connect with control module, for the instruction action according to control module, transformation cabinet inside is entered Row ventilation;
Alarm module, communicates to connect with control module, for the instruction action according to control module, sends information warning;
Power-off modular, is communicated to connect with control module, for the instruction action according to control module, to transformation cabinet inside electricity Source is turned off;
Control module, is communicated to connect, control module passes through detection of electrical leakage module with detection of electrical leakage module, temperature detecting module Detect that transformation cabinet leakage current I, control module gather power transformation in-cabinet temperature T by temperature detecting module, and by I and predetermined current Threshold value is compared, and is acted according to comparative result instruction control alarm module, power-off modular;T is entered with preset temperature threshold value Row compares, and is acted according to comparative result instruction control ventilation module, alarm module, power-off modular.
Preferably, the control module, specifically for:Alarm current I is provided with control module0, interruption current Imax, its Middle I0<Imax
Work as I0≤I<ImaxWhen, control module instruction control alarm module action;
Work as ImaxDuring≤I, control module instruction control power-off modular.
Preferably, the control module, specifically for:Alarm temperature T is provided with control module0, power-off temperature Tmax, its Middle T0<Tmax
Work as T0≤T<TmaxWhen, control module instruction control ventilation module action, until T<a T0When, control module instruction control Ventilation module stopping action processed, wherein 0<a<1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work.
Preferably, the detection of electrical leakage module at least includes a detection of electrical leakage submodule.
Preferably, the temperature detecting module at least includes a temperature sensor.
A kind of high-low pressure transformation cabinet electric leakage control method, it is characterised in that including:
S1, detection transformation cabinet leakage current I;
S2, collection power transformation in-cabinet temperature T;
S3, I and predetermined current threshold be compared, and information warning issued the user with according to comparative result or cut-out becomes Electric cabinet power supply;
S4, T and preset temperature threshold value be compared, and transformation cabinet is aerated according to comparative result or sent out to user Go out information warning and cut off transformation cabinet power supply.
Preferably, step S3, is specifically included:Predetermined current threshold includes alarm current I0, interruption current Imax, wherein I0< Imax
Work as I0≤I<ImaxWhen, issue the user with information warning;
Work as ImaxDuring≤I, transformation cabinet power supply is cut off.
Preferably, step S4, is specifically included:Preset temperature threshold value includes alarm temperature T0, power-off temperature Tmax, wherein T0< Tmax
Work as T0≤T<TmaxWhen, transformation cabinet is aerated, until T<a T0When, stopping is aerated to transformation cabinet, wherein 0 <a<1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work to user Send information warning and cut off transformation cabinet power supply.
Preferably, in step s 2, power transformation in-cabinet temperature T is gathered by temperature sensor.
The present invention is compared by detecting the current information in transformation cabinet, and by the leakage current detected and predetermined current Compared with, when the leakage current detected be higher than alarm current when, information warning will be sent to staff, when detect electric leakage electricity When stream is higher than interruption current, by the power supply in directly cut-out transformation cabinet, while by gathering electric cabinet internal temperature, temperature will be collected Degree is compared with preset temperature, when collecting temperature higher than alarm temperature, transformation cabinet will be aerated, and be reduced transformation cabinet Internal temperature, when when collecting temperature higher than power-off temperature, by the power supply in directly cut-out transformation cabinet.
In this way, according to detection transformation cabinet leakage current, when transformation cabinet leaks electricity, staff is warned, In the case that drain conditions are serious, transformation cabinet is powered off, it is to avoid staff enters in the case of unwitting to transformation cabinet Row operation, so as to bring puzzlement even life danger to staff, while by gathering the temperature in transformation cabinet, when electric leakage or When external cause causes temperature drift in transformation cabinet, cooling is aerated to transformation cabinet, by power distribution cabinet internal temperature control suitable In suitable scope, when temperature is too high, transformation cabinet is powered off, it is to avoid transformation cabinet burns, damage transformation cabinet bring through Ji loss.
Brief description of the drawings
Fig. 1 is a kind of module diagram of high-low pressure transformation cabinet leakage controller system;
Fig. 2 is a kind of method flow diagram of high-low pressure transformation cabinet electric leakage control method.
Embodiment
Reference picture 1, a kind of high-low pressure transformation cabinet leakage controller system proposed by the present invention, including:
Detection of electrical leakage module, for detecting transformation cabinet leakage current I;
Detection of electrical leakage module at least includes a detection of electrical leakage submodule;
In the present embodiment, the leakage current of transformation cabinet is detected by least one detection of electrical leakage submodule.
Temperature detecting module, for gathering power transformation in-cabinet temperature T;
Temperature detecting module at least includes a temperature sensor;
In the present embodiment, power transformation in-cabinet temperature is acquired by least one temperature sensor block.
Ventilation module, communicates to connect with control module, for the instruction action according to control module, transformation cabinet inside is entered Row ventilation.
Alarm module, communicates to connect with control module, for the instruction action according to control module, sends information warning;
Power-off modular, is communicated to connect with control module, for the instruction action according to control module, to transformation cabinet inside electricity Source is turned off;
Control module, is communicated to connect, control module passes through detection of electrical leakage module with detection of electrical leakage module, temperature detecting module Detect that transformation cabinet leakage current I, control module gather power transformation in-cabinet temperature T by temperature detecting module, and by I and predetermined current Threshold value is compared, and is acted according to comparative result instruction control alarm module, power-off modular;T is entered with preset temperature threshold value Row compares, and is acted according to comparative result instruction control ventilation module, alarm module, power-off modular.
Control module, specifically for:Alarm current I is provided with control module0, interruption current Imax, wherein I0<Imax
Work as I0≤I<ImaxWhen, control module instruction control alarm module action;
Work as ImaxDuring≤I, control module instruction control power-off modular.
Control module, specifically for:Alarm temperature T is provided with control module0, power-off temperature Tmax, wherein T0<Tmax
Work as T0≤T<TmaxWhen, control module instruction control ventilation module action, until T<a T0When, control module instruction control Ventilation module stopping action processed, wherein 0<a<1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work;
In the present embodiment, the leakage current and predetermined current that control module detects detection of electrical leakage module are compared Compared with when the leakage current that detection of electrical leakage module is detected is higher than alarm current, control module controls alarm module to work people Member sends information warning, it is to avoid staff carries out operation to transformation cabinet in the case of unwitting and brings unnecessary trouble, When the leakage current that detection of electrical leakage module is detected is higher than interruption current, control module control power-off modular directly cuts off power transformation Power supply in cabinet, it is to avoid staff carries out operation to transformation cabinet in the case of unwitting and brings life danger;Control module The power transformation in-cabinet temperature and preset temperature that temperature detecting module is collected are compared, when the temperature in transformation cabinet is higher than alarm During temperature, control module control ventilation module is aerated to transformation cabinet, when the temperature in transformation cabinet is higher than power-off temperature, control Molding block control power-off modular directly cuts off the power supply in transformation cabinet.
Reference picture 2, a kind of high-low pressure transformation cabinet electric leakage control method proposed by the present invention, it is characterised in that including:
Step S1, detection transformation cabinet leakage current I;
In the present embodiment, by detecting the leakage current of transformation cabinet, judge whether leaked electricity in transformation cabinet.
Step S2, collection power transformation in-cabinet temperature T;
In this step, power transformation in-cabinet temperature T is gathered by temperature sensor;
In the present embodiment, transformation cabinet internal temperature is gathered by temperature sensor, so as to be carried out to transformation cabinet corresponding Operation.
Step S3, I is compared with predetermined current threshold, and is issued the user with information warning according to comparative result or cut Disconnected transformation cabinet power supply;
This step is specifically included:Predetermined current threshold includes alarm current I0, interruption current Imax, wherein I0<Imax
Work as I0≤I<ImaxWhen, issue the user with information warning;
Work as ImaxDuring≤I, transformation cabinet power supply is cut off.
In the present embodiment, the leakage current detected and predetermined current are compared, when the electric leakage electricity detected When stream is higher than alarm current, information warning is sent to staff, it is to avoid staff is in the case of unwitting to transformation cabinet Carry out operation and bring unnecessary trouble, when the leakage current detected is higher than interruption current, directly cut off in transformation cabinet Power supply, it is to avoid staff carries out operation to transformation cabinet in the case of unwitting and brings life danger.
Step S4, T is compared with preset temperature threshold value, and according to comparative result transformation cabinet is aerated or to Family sends information warning and cuts off transformation cabinet power supply.
This step is specifically included:Preset temperature threshold value includes alarm temperature T0, power-off temperature Tmax, wherein T0<Tmax
Work as T0≤T<TmaxWhen, transformation cabinet is aerated, until T<a T0When, stopping is aerated to transformation cabinet, wherein 0 <a<1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work to user Send information warning and cut off transformation cabinet power supply;
In the present embodiment, the power transformation in-cabinet temperature and preset temperature temperature detecting module collected is compared, When the temperature in transformation cabinet is higher than alarm temperature, control module control ventilation module is aerated to transformation cabinet, so as to reduce Temperature in transformation cabinet, when the temperature in transformation cabinet is higher than power-off temperature, control module control power-off modular directly cuts off change Power supply in electric cabinet, it is to avoid temperature is too high to trigger electrical equipment burning in transformation cabinet, so as to bring economic loss.
Present embodiment, when transformation cabinet leaks electricity, is warned according to detection transformation cabinet leakage current to staff Show, in the case where drain conditions are serious, transformation cabinet is powered off, it is to avoid staff is in the case of unwitting to power transformation Cabinet is operated, so that puzzlement even life danger is brought to staff, while by gathering the temperature in transformation cabinet, working as leakage When electricity or external cause cause temperature drift in transformation cabinet, cooling is aerated to transformation cabinet, by power distribution cabinet internal temperature control In suitable scope, when temperature is too high, transformation cabinet is powered off, it is to avoid transformation cabinet burns, damage transformation cabinet band Carry out economic loss.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (9)

1. a kind of high-low pressure transformation cabinet leakage controller system, it is characterised in that including:
Detection of electrical leakage module, for detecting transformation cabinet leakage current I;
Temperature detecting module, for gathering power transformation in-cabinet temperature T;
Ventilation module, communicates to connect with control module, for the instruction action according to control module, transformation cabinet inside is led to Wind;
Alarm module, communicates to connect with control module, for the instruction action according to control module, sends information warning;
Power-off modular, communicates to connect with control module, for the instruction action according to control module, transformation cabinet internal electric source is entered Row disconnects;
Control module, is communicated to connect, control module is detected by detection of electrical leakage module with detection of electrical leakage module, temperature detecting module Transformation cabinet leakage current I, control module gather power transformation in-cabinet temperature T by temperature detecting module, and by I and predetermined current threshold It is compared, and is acted according to comparative result instruction control alarm module, power-off modular;T is compared with preset temperature threshold value Compared with, and acted according to comparative result instruction control ventilation module, alarm module, power-off modular.
2. high-low pressure transformation cabinet leakage controller system according to claim 1, it is characterised in that the control module, tool Body is used for:Alarm current I is provided with control module0, interruption current Imax, wherein I0<Imax
Work as I0≤I<ImaxWhen, control module instruction control alarm module action;
Work as ImaxDuring≤I, control module instruction control power-off modular.
3. high-low pressure transformation cabinet leakage controller system according to claim 1, it is characterised in that the control module, tool Body is used for:Alarm temperature T is provided with control module0, power-off temperature Tmax, wherein T0<Tmax
Work as T0≤T<TmaxWhen, control module instruction control ventilation module action, until T<a T0When, control module instruction control is logical The stopping of wind module is acted, wherein 0<a<1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work.
4. high-low pressure transformation cabinet leakage controller system according to claim 1, it is characterised in that the detection of electrical leakage module At least include a detection of electrical leakage submodule.
5. high-low pressure transformation cabinet leakage controller system according to claim 1, it is characterised in that the temperature detecting module At least include a temperature sensor.
The control method 6. a kind of high-low pressure transformation cabinet leaks electricity, it is characterised in that including:
S1, detection transformation cabinet leakage current I;
S2, collection power transformation in-cabinet temperature T;
S3, I and predetermined current threshold be compared, and information warning or cut-out transformation cabinet are issued the user with according to comparative result Power supply;
S4, T and preset temperature threshold value be compared, and according to comparative result be aerated or issue the user with police to transformation cabinet Show information and cut off transformation cabinet power supply.
The control method 7. high-low pressure transformation cabinet according to claim 6 leaks electricity, it is characterised in that step S3, is specifically included: Predetermined current threshold includes alarm current I0, interruption current Imax, wherein I0<Imax
Work as I0≤I<ImaxWhen, issue the user with information warning;
Work as ImaxDuring≤I, transformation cabinet power supply is cut off.
The control method 8. high-low pressure transformation cabinet according to claim 6 leaks electricity, it is characterised in that step S4, is specifically included: Preset temperature threshold value includes alarm temperature T0, power-off temperature Tmax, wherein T0<Tmax
Work as T0≤T<TmaxWhen, transformation cabinet is aerated, until T<a T0When, stopping is aerated to transformation cabinet, wherein 0<a< 1;
Work as Tmax<During T, the action of control module instruction control power-off modular, control module instruction alarm module work are issued the user with Information warning simultaneously cuts off transformation cabinet power supply.
The control method 9. high-low pressure transformation cabinet according to claim 6 leaks electricity, it is characterised in that in step s 2, pass through Temperature sensor collection power transformation in-cabinet temperature T.
CN201710334918.3A 2017-05-12 2017-05-12 A kind of high-low pressure transformation cabinet leakage controller system and method Pending CN107069675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710334918.3A CN107069675A (en) 2017-05-12 2017-05-12 A kind of high-low pressure transformation cabinet leakage controller system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710334918.3A CN107069675A (en) 2017-05-12 2017-05-12 A kind of high-low pressure transformation cabinet leakage controller system and method

Publications (1)

Publication Number Publication Date
CN107069675A true CN107069675A (en) 2017-08-18

Family

ID=59596339

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710334918.3A Pending CN107069675A (en) 2017-05-12 2017-05-12 A kind of high-low pressure transformation cabinet leakage controller system and method

Country Status (1)

Country Link
CN (1) CN107069675A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108714931A (en) * 2018-05-31 2018-10-30 安徽电信器材贸易工业有限责任公司 A kind of optical cable Cutter Control System
CN109510311A (en) * 2018-12-10 2019-03-22 新疆信息产业有限责任公司 Power distribution cabinet running environment monitoring device and its application method
JP2023057072A (en) * 2021-10-08 2023-04-20 Igr技研株式会社 Leak current blocking device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203324778U (en) * 2013-06-06 2013-12-04 江苏创导电气有限公司 Fire automatic alarm switch cabinet
CN104393576A (en) * 2012-05-31 2015-03-04 德清县供电局 Low-voltage power distribution cabinet safety protection method
CN104638531A (en) * 2013-11-13 2015-05-20 天津市科惠生产力促进中心 Intelligent integrated power distribution cabinet
CN204696642U (en) * 2015-06-04 2015-10-07 张生国 A kind of laboratory power supply protective device
CN105305375A (en) * 2015-11-04 2016-02-03 成都聚智工业设计有限公司 Electric leakage protection device of distribution box
CN106384950A (en) * 2016-11-25 2017-02-08 国网江西省电力公司赣西供电分公司 Power distribution cabinet with automatic fault alarm function and alarm method thereof
CN106530582A (en) * 2016-12-22 2017-03-22 国网山东省电力公司鄄城县供电公司 Electrical fire monitoring device, system and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104393576A (en) * 2012-05-31 2015-03-04 德清县供电局 Low-voltage power distribution cabinet safety protection method
CN203324778U (en) * 2013-06-06 2013-12-04 江苏创导电气有限公司 Fire automatic alarm switch cabinet
CN104638531A (en) * 2013-11-13 2015-05-20 天津市科惠生产力促进中心 Intelligent integrated power distribution cabinet
CN204696642U (en) * 2015-06-04 2015-10-07 张生国 A kind of laboratory power supply protective device
CN105305375A (en) * 2015-11-04 2016-02-03 成都聚智工业设计有限公司 Electric leakage protection device of distribution box
CN106384950A (en) * 2016-11-25 2017-02-08 国网江西省电力公司赣西供电分公司 Power distribution cabinet with automatic fault alarm function and alarm method thereof
CN106530582A (en) * 2016-12-22 2017-03-22 国网山东省电力公司鄄城县供电公司 Electrical fire monitoring device, system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108714931A (en) * 2018-05-31 2018-10-30 安徽电信器材贸易工业有限责任公司 A kind of optical cable Cutter Control System
CN109510311A (en) * 2018-12-10 2019-03-22 新疆信息产业有限责任公司 Power distribution cabinet running environment monitoring device and its application method
JP2023057072A (en) * 2021-10-08 2023-04-20 Igr技研株式会社 Leak current blocking device
JP7270945B2 (en) 2021-10-08 2023-05-11 Igr技研株式会社 Leakage current interrupter

Similar Documents

Publication Publication Date Title
CN104062924B (en) Method for early warning, system and air conditioner
CN107069675A (en) A kind of high-low pressure transformation cabinet leakage controller system and method
CN105889054A (en) Air compressor working environment monitoring system capable of being remotely monitored
CN104305628B (en) Multifunctional monitoring alarm safety helmet for electric power
CN105066242A (en) Kitchen cooling system and kitchen cooling method
CN104053254A (en) Electric heating protection circuit and method
CN205718196U (en) A kind of based on Embedded freezer intelligence control system
CN110474293A (en) A kind of band detects automatically and the fire prevention of Self-resetting, earth leakage circuit-breaker and guard method
CN108180540A (en) A kind of control method and device of air-conditioning system
CN104733658A (en) Battery cabinet with automatic temperature control
CN201707576U (en) Intelligent control system of industrial temperature control equipment
CN202382369U (en) Electronic intelligent energy saving control device for computer room air conditioners
CN202364485U (en) Cabinet with regional temperature control function and fully-digital monitoring function
CN210346055U (en) Remote control type refrigeration house system with multiple refrigeration units
CN102496871A (en) Transformer station with automatic temperature reduction function
CN214380041U (en) Intelligent weak current system based on remote control
CN206818850U (en) A kind of apparatus for monitoring power supply
CN103546017B (en) A kind of power adaption system
CN110474292A (en) A kind of band detects automatically and the earth leakage circuit-breaker of Self-resetting and guard method
CN204630163U (en) A kind of cold water and source pump
CN203847365U (en) Multifunctional monitoring and controlling alarm of vacuum pump
CN204731614U (en) A kind of electrostatic automatic monitoring instrument
CN104896820A (en) Overheat protection control method
CN204833617U (en) Domestic carbon monoxide leaks protection device
CN210606010U (en) Household gas alarm

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170818