CN107068346A - A kind of protection system of marine transformer - Google Patents
A kind of protection system of marine transformer Download PDFInfo
- Publication number
- CN107068346A CN107068346A CN201710096146.4A CN201710096146A CN107068346A CN 107068346 A CN107068346 A CN 107068346A CN 201710096146 A CN201710096146 A CN 201710096146A CN 107068346 A CN107068346 A CN 107068346A
- Authority
- CN
- China
- Prior art keywords
- water
- main controller
- transformer
- protection system
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of protection system of marine transformer; the water-cooling apparatus to be cooled down to it is connected including water-cooled transformer, main controller and with the water-cooled transformer; the main controller is connected with the water-cooled transformer and the water-cooling apparatus signal respectively; the water-cooled transformer is provided with temperature collecting device, the start and stop of main controller water-cooling apparatus according to the temperature control that the temperature collecting device is gathered.Using the protection system of marine transformer disclosed by the invention; by setting temperature collecting device on water-cooled transformer; by gathering the temperature on water-cooled transformer in real time and being transferred to main controller; when temperature is higher than preset temperature, main controller can control water-cooling apparatus and start; to be cooled down to water-cooled transformer; protect the normal operation of water-cooled transformer; the device can in real time be monitored to water-cooled transformer and water-cooling apparatus; water-cooled transformer is cooled in time, extends its service life indirectly.
Description
Technical field
The present invention relates to wind power technology apparatus field, more specifically to a kind of protection system of marine transformer.
Background technology
With the development of offshore wind farm technology, increasing sea wind field is set up, in order to improve step-up transformer
The ability of environment resistant, many owners use hermetically sealed water cooling step-up transformer, on the one hand can protect transformer directly by salt
The influence of mist, humid air, another aspect transformer heating can be passed to outside tower by Water-cooling circulating equipment.But because transformation
Device at sea, and transformer needed when load is larger water cooling equipment assist radiating, existing apparatus can not be to water cooling transformation
Device and cooling device carry out effective monitoring, it is impossible to the problem of cooling in time to water-cooled transformer.
The content of the invention
In view of this, it is an object of the invention to provide a kind of protection system of marine transformer, to solve existing apparatus
The problem of effective monitoring can not be carried out to system, can not be cooled in time to water-cooled transformer.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of protection system of marine transformer, including water-cooled transformer, main controller and be connected with the water-cooled transformer
With the water-cooling apparatus cooled down to it, the main controller respectively with the water-cooled transformer and the water-cooling apparatus signal
Connection, the water-cooled transformer is provided with temperature collecting device, the temperature that the main controller is gathered according to the temperature collecting device
Control the start and stop of the water-cooling apparatus.
Preferably, the water-cooled transformer is provided with the smog being connected with the main controller and/or arc light detection device, described
Main controller is connected with the smog and/or arc light detection device with the letter according to the smog and/or the detection of arc light detection device
Number carry out corresponding control operation.
Preferably, the pipeline of the water-cooling apparatus is provided with the device for detecting water pressure being connected with the main controller signal.
Preferably, the water-cooling apparatus is provided with the motor overcurrent protective device being connected with the main controller signal.
Preferably, in addition to the main controller signal warning device being connected, the warning device is according to the master control
The enabling signal of device is alarmed with predetermined manner.
Preferably, wind pressure detection device, the wind pressure detection device and the master control are additionally provided with the water-cooling apparatus
Device signal is connected.
Preferably, the water-cooled transformer is provided with the overtemperature tripgear being connected with the main controller signal.
Preferably, the inner radiator of the water-cooling apparatus is provided with water leakage monitor, the water leakage monitor
It is connected with the main controller signal.
Preferably, the inner radiator is provided with the Inlet and outlet water temperature-detecting device being connected with the main controller signal.
Preferably, the housing of the water-cooled transformer is provided with the environment for monitoring of environmental temperature and/or ambient humidity
Temperature and/or ambient humidity detection means.
The protection system for the marine transformer that the present invention is provided, including water-cooled transformer, main controller and and water-cooled transformer
The water-cooling apparatus to be cooled down to it is connected, main controller is connected with water-cooled transformer and water-cooling apparatus signal respectively, water
Cold transformer is provided with temperature collecting device, and temperature control water-cooling apparatus that main controller is gathered according to temperature collecting device is opened
Stop.The protection system of the marine transformer provided using the present invention, by setting temperature collecting device on water-cooled transformer, leads to
Cross and gather the temperature on water-cooled transformer in real time and be transferred to main controller, main controller can control water when temperature is higher than preset temperature
Cooling device starts, to be cooled down to water-cooled transformer, protects the normal operation of water-cooled transformer, the device can be to water
Cold transformer and water-cooling apparatus are monitored in real time, and water-cooled transformer is cooled in time, extend its service life indirectly.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the protection system of marine transformer provided in an embodiment of the present invention.
Marked in accompanying drawing as follows：
Water-cooled transformer 1, temperature collecting device 2, main controller 3, water-cooling apparatus 4.
Embodiment
The embodiment of the invention discloses a kind of protection system of marine transformer, system can not be entered with solving existing apparatus
Row effective monitoring, the problem of can not cool in time to water-cooled transformer.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, structural representations of the Fig. 1 for the protection system of marine transformer provided in an embodiment of the present invention.
In a kind of specific embodiment, the protection system for the marine transformer that the present invention is provided, including water cooling transformation
Device 1, main controller 3 and the water-cooling apparatus 4 to be cooled down to it is connected with water-cooled transformer 1, general, water-cooled transformer 1
It can be connected with water-cooling apparatus 4 by communication, such as connection mode, main controller 3 is filled with water-cooled transformer 1 and water cooling respectively
The connection of 4 signals is put, water-cooled transformer 1 is provided with temperature collecting device 2, and temperature collecting device 2 can be specially temperature sensor, preferably
Ground, the two can be fixed by way of being removably fixedly connected, and temperature collecting device 2 is in real time to water-cooled transformer 1
Temperature is acquired, and temperature signal is sent to main controller 3, and main controller 3 is judged real time temperature and preset temperature, when
When temperature is higher than preset temperature, the control water-cooling apparatus 4 of main controller 3 starts, and water-cooled transformer 1 is cooled.The device leads to
Cross and set temperature of the temperature collecting device 2 in real time to water-cooled transformer 1 to be acquired on water-cooled transformer 1, main controller 3 is carried out
The judgement of temperature, the startup of water-cooling apparatus 4 is controlled according to judged result, to cool in time to water-cooled transformer 1, and it is tied
Structure is simple, be easy to implement.
Specifically, water-cooled transformer 1 is provided with the smog that be connected with main controller 3 and/or arc light detection device, main controller 3 and
Smog and/or the connection of arc light detection device are controlled accordingly with the signal detected according to smog and/or arc light detection device
Operation.
When water-cooled transformer 1 breaks down, as caused by fire or short circuit during flame, pass through smoke detector pair
Smog is monitored, and sends failure smoke signal to main controller 3, and main controller 3 is cut off in transformer fault, it is to avoid therefore
Barrier expands, and influences the safe operation of whole system.Certainly, in other embodiments, can also set arc light detection device to because
Arc light caused by short circuit current or other factors is detected, to be monitored in real time to it, it is ensured that the security of system.Master control
The signal that device 3 is detected according to smoke detector carries out corresponding control operation, and circuit can be such as cut off in time, or stops becoming
Operation of depressor etc., it is preferable that by be respectively arranged on water-cooled transformer 1 main controller 3 connect smoke detector and
The electricity of arc light detection device, the smog detected according to smoke detector and arc light detection device and the detection of arc light detection device
Arc signal carries out corresponding control operation, can need voluntarily to be configured according to actual operation, is only more preferred herein
Embodiment, within the scope of the present invention.
Further, the pipeline of water-cooling apparatus 4 is provided with the device for detecting water pressure being connected with the signal of main controller 3.
In order to prevent the pipeline of water-cooling apparatus 4 from generation that is damaged, causing security incident occur, water can be set on pipeline
Detection means is pressed, can be specifically pressure sensor or flow sensor etc., as long as identical technique effect can be reached i.e.
Can, concrete implementation form is not construed as limiting, main controller 3 is connected with device for detecting water pressure signal, is examined according to device for detecting water pressure
The pressure signal measured is compared with preset pressure value, when the pressure value detected is less than preset pressure value, can pass through master
Control the valve where device 3 closes the pipeline to close, it is preferred that can be configured in each branch road of water-cooling apparatus 4, according to difference
The difference of the pressure value of branch road, judges the position of leak, facilitates staff to position in time, in protection scope of the present invention
It is interior.
Further, water-cooling apparatus 4 is provided with the motor overcurrent protective device being connected with the signal of main controller 3.
It is understood that the status signal in order to detect motor operation in real time, can set motor electricity in corresponding circuit
Machine overcurrent protective device, in a kind of specific embodiment, is specifically as follows current fuse, and the circuit too high to electric current enters
Row cut-out in time, to prevent the generation of security incident, and transmits the signal to main controller 3, main controller 3 can enter according to the signal
The corresponding operation of row, such as record accident frequency, or remind the generation of the current accident of staff etc., specifically can be according to reality
Voluntarily it is configured the need for border.
Specifically, also including the warning device being connected with the signal of main controller 3, warning device is believed according to the startup of main controller 3
Number alarmed with predetermined manner.
The signal that warning device can be sent according to main controller 3 is alarmed with predetermined manner, such as when hydraulic pressure is reduced, can be led to
Buzzer buzzing is crossed to point out the current hydraulic pressure of staff to reduce, when there is arc light or occurs flame in the short circuit of water-cooled transformer 1,
Can by the forms such as buzzer and indicator lamp point out staff, in a kind of specific embodiment, warning device can with it is pre-
If terminal is connected, staff is reminded currently to be related to the alarm of the system by way of sending warning message to default terminal
Information, default terminal can be the forms such as display, mobile terminal or flat board, can voluntarily be configured according to the actual needs,
It is within the scope of the present invention.
In order to which main controller 3 is more easily shown to each warning message, display screen can be set on main controller 3, pass through
Display screen prompt message reminds the current warning message of staff, in order to which staff grasps the running status of system in time
And abort situation.
Further, wind pressure detection device is additionally provided with water-cooling apparatus 4, wind pressure detection device connects with the signal of main controller 3
Connect.
In order to which each state to water-cooling apparatus 4 is monitored, wind pressure detection device is can have disposed thereon, with to its blast
Monitored in real time, in other embodiments, hair can also be worked as by setting water pump to control warning device to be monitored water pump
Pump motor power supply is cut off when raw water pump dallies in time, is monitored in real time with the various running statuses to water-cooling apparatus 4.
Further, water-cooled transformer 1 is provided with the overtemperature tripgear being connected with the signal of main controller 3.A kind of real
Apply in example, voluntarily tripped when the temperature of water-cooled transformer 1 is too high, overtemperature tripgear can be specially overheating fuse, certainly this
Place is only preferred embodiment, can voluntarily set the specific shape of overtemperature tripgear according to the actual needs in other embodiments
Formula, as long as identical technique effect can be reached.It is preferred that, temperature sensor can also be set thereon, when temperature mistake
Alarm signal is sent when high to main controller 3.
Specifically, the inner radiator of water-cooling apparatus 4 is provided with water leakage monitor, water leakage monitor and main controller
3 signals are connected.In order to be fed back in time when the inner radiator of water-cooling apparatus 4 is leaked, water is set to leak prison on inner radiator
Survey device to be monitored it, in a kind of preferred embodiment, water leakage monitor can be specially liquid level floating ball sensor,
Certainly, it is only herein more preferred embodiment, in other embodiments, can voluntarily sets water leakage monitoring to fill as needed
The concrete form put, as long as identical effect can be reached.
Further, inner radiator is provided with the Inlet and outlet water temperature-detecting device being connected with the signal of main controller 3.In one kind implementation
In example, set temperature sensor to detect inflow temperature and leaving water temperature on inner radiator, temperature signal is sent to
Main controller 3, main controller 3 can be operated accordingly according to temperature signal, and user can record to temperature, to be filled to water cooling
The working condition for putting 4 is observed.
Further, the housing of water-cooled transformer 1 is provided with the environment for monitoring of environmental temperature and/or ambient humidity
Temperature and/or ambient humidity detection means.In order to monitor influence of the external environment condition to water-cooled transformer 1 or water-cooling apparatus 4,
In a kind of embodiment, ambient temperature detection device and ambient humidity detection means can be set on water-cooled transformer 1, it is right by its
The temperature and humidity of environment is detected, and the signal of detection is sent to main controller 3, the recorded data of main controller 3, Huo Zhegen
Judge whether to be capable of in the data area of normal work in water-cooled transformer 1 according to the signal, with the normal work to working equipment
Make device to be detected, certainly, in other embodiments, ambient temperature detection device or ring can also be only set as needed
Border humidity detector, within the scope of the present invention.
Preferably, environment temperature or humidity can also be detected, when environment temperature or humidity exceed setting range, led to
Startup heating and dehumidification device is crossed, to ensure the normal work of water-cooled transformer 1.By setting temperature in inner radiator or outer radiator
Sensor is spent, the temperature to its Inlet and outlet water is monitored, and water temperature signal is sent to main controller 3, and main controller 3 can be according to the letter
Number operated accordingly.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of protection system of marine transformer, it is characterised in that become including water-cooled transformer, main controller and with the water cooling
Depressor connects water-cooling apparatus to be cooled down to it, the main controller respectively with the water-cooled transformer and the water cooling
Device signal is connected, and the water-cooled transformer is provided with temperature collecting device, and the main controller is adopted according to the temperature collecting device
The start and stop of water-cooling apparatus described in the temperature control of collection.
2. protection system according to claim 1, it is characterised in that the water-cooled transformer is provided with to be connected with the main controller
The smog and/or arc light detection device connect, the main controller is connected with the smog and/or arc light detection device with according to described
Smog and/or the signal of arc light detection device detection carry out corresponding control operation.
3. protection system according to claim 2, it is characterised in that the pipeline of the water-cooling apparatus be provided with it is described
The device for detecting water pressure of main controller signal connection.
4. protection system according to claim 3, it is characterised in that the water-cooling apparatus is provided with to be believed with the main controller
Number connection motor overcurrent protective device.
5. protection system according to claim 4, it is characterised in that the also alarm including being connected with the main controller signal
Device, the warning device is alarmed according to the enabling signal of the main controller with predetermined manner.
6. protection system according to claim 5, it is characterised in that blast detection dress is additionally provided with the water-cooling apparatus
Put, the wind pressure detection device is connected with the main controller signal.
7. protection system according to claim 6, it is characterised in that the water-cooled transformer is provided with and the main controller
The overtemperature tripgear of signal connection.
8. protection system according to claim 7, it is characterised in that the inner radiator of the water-cooling apparatus is let out provided with water
Monitoring device is leaked, the water leakage monitor is connected with the main controller signal.
9. protection system according to claim 8, it is characterised in that the inner radiator is provided with and the main controller signal
The Inlet and outlet water temperature-detecting device of connection.
10. protection system according to claim 9, it is characterised in that the housing of the water-cooled transformer, which is provided with, to be used for
The environment temperature and/or ambient humidity detection means of monitoring of environmental temperature and/or ambient humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096146.4A CN107068346A (en) | 2017-02-22 | 2017-02-22 | A kind of protection system of marine transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096146.4A CN107068346A (en) | 2017-02-22 | 2017-02-22 | A kind of protection system of marine transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107068346A true CN107068346A (en) | 2017-08-18 |
Family
ID=59621839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710096146.4A Pending CN107068346A (en) | 2017-02-22 | 2017-02-22 | A kind of protection system of marine transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107068346A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213012A (en) * | 2018-09-11 | 2019-01-15 | 广东瑞智电力科技有限公司 | A kind of offshore wind farm boosting dry-type transformer control system |
| CN115313800A (en) * | 2022-05-17 | 2022-11-08 | 固赢科技(深圳)有限公司 | High-power self-adaptive power supply control system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537257A (en) * | 2010-12-17 | 2012-07-04 | 吴舒克 | Overload protection device for gear box |
| CN102580273A (en) * | 2012-02-29 | 2012-07-18 | 常州邦安电力装备有限公司 | Novel oil immersion power transformer extinguishing device |
| CN102842404A (en) * | 2012-09-28 | 2012-12-26 | 丹东欣泰电气股份有限公司 | Dry type transformer device for offshore wind power generation |
| CN202996498U (en) * | 2012-11-30 | 2013-06-12 | 申达电气集团有限公司 | Spiral plate type cooler with alarm function for transformer |
| CN103677007A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation water-cooling control system for transformer of submerged arc furnace |
| CN204117767U (en) * | 2014-09-22 | 2015-01-21 | 宁波天安（集团）股份有限公司 | A kind of Oversea wind power generation dry-type transformer |
| JP2016102626A (en) * | 2014-11-28 | 2016-06-02 | 東芝プラントシステム株式会社 | Transformer cooling apparatus for underground substation, transformer cooling system and transformer cooling method |
| CN205377094U (en) * | 2016-03-09 | 2016-07-06 | 宁夏意洋节能科技有限公司 | Special block terminal of smart power grids |
| US20160203883A1 (en) * | 2015-01-14 | 2016-07-14 | David W. Richardson | Semi Submersible Nuclear Power Plant and Multi-Purpose Platform |
| CN205829138U (en) * | 2016-07-12 | 2016-12-21 | 江西劲能科技电子有限公司 | Intelligent transformer |
| CN206532671U (en) * | 2017-02-22 | 2017-09-29 | 海南金盘电气有限公司 | A kind of protection system of marine transformer |
-
2017
- 2017-02-22 CN CN201710096146.4A patent/CN107068346A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537257A (en) * | 2010-12-17 | 2012-07-04 | 吴舒克 | Overload protection device for gear box |
| CN102580273A (en) * | 2012-02-29 | 2012-07-18 | 常州邦安电力装备有限公司 | Novel oil immersion power transformer extinguishing device |
| CN102842404A (en) * | 2012-09-28 | 2012-12-26 | 丹东欣泰电气股份有限公司 | Dry type transformer device for offshore wind power generation |
| CN202996498U (en) * | 2012-11-30 | 2013-06-12 | 申达电气集团有限公司 | Spiral plate type cooler with alarm function for transformer |
| CN103677007A (en) * | 2013-12-03 | 2014-03-26 | 柳州市五环水暖器材经营部 | Oil circulation water-cooling control system for transformer of submerged arc furnace |
| CN204117767U (en) * | 2014-09-22 | 2015-01-21 | 宁波天安（集团）股份有限公司 | A kind of Oversea wind power generation dry-type transformer |
| JP2016102626A (en) * | 2014-11-28 | 2016-06-02 | 東芝プラントシステム株式会社 | Transformer cooling apparatus for underground substation, transformer cooling system and transformer cooling method |
| US20160203883A1 (en) * | 2015-01-14 | 2016-07-14 | David W. Richardson | Semi Submersible Nuclear Power Plant and Multi-Purpose Platform |
| CN205377094U (en) * | 2016-03-09 | 2016-07-06 | 宁夏意洋节能科技有限公司 | Special block terminal of smart power grids |
| CN205829138U (en) * | 2016-07-12 | 2016-12-21 | 江西劲能科技电子有限公司 | Intelligent transformer |
| CN206532671U (en) * | 2017-02-22 | 2017-09-29 | 海南金盘电气有限公司 | A kind of protection system of marine transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213012A (en) * | 2018-09-11 | 2019-01-15 | 广东瑞智电力科技有限公司 | A kind of offshore wind farm boosting dry-type transformer control system |
| CN109213012B (en) * | 2018-09-11 | 2021-02-09 | 广东明阳电气股份有限公司 | Offshore wind power boost dry-type transformer control system |
| CN115313800A (en) * | 2022-05-17 | 2022-11-08 | 固赢科技(深圳)有限公司 | High-power self-adaptive power supply control system |
| CN115313800B (en) * | 2022-05-17 | 2024-06-04 | 固赢科技(深圳)有限公司 | High-power self-adaptive power supply control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106026033B (en) | A kind of capacitor box on-line monitoring automatic safety device and its working method | |
| US20170131117A1 (en) | Method and appartus for monitoring a condition of a meter | |
| CN107326934A (en) | Intelligent well cover monitoring system based on Internet of Things | |
| CN209820523U (en) | Boiler safety monitoring system based on Internet of things | |
| CN110515340A (en) | A kind of inspection remote power feeding system and its method cooperateing with protection with fire-fighting system | |
| CN206532671U (en) | A kind of protection system of marine transformer | |
| CN201732134U (en) | Panel-type short-circuit and earth fault indicator with pre-alarm function | |
| CN107068346A (en) | A kind of protection system of marine transformer | |
| CN205845230U (en) | Wind power generating set intelligent fire linked system | |
| CN209028769U (en) | A kind of electronic box intelligent monitoring and controlling device | |
| CN205566018U (en) | Take motor of electric leakage alarm function | |
| CN208507283U (en) | A kind of cable with alarming sign | |
| CN216210693U (en) | Intelligent power distribution data acquisition equipment and intelligent operation and maintenance platform that security performance is high | |
| CN108107948A (en) | A kind of Temperature Controller for Dry-Type Transformer | |
| CN205665601U (en) | Cabinet body wetness monitoring system and wind generating set's automatically controlled cabinet | |
| CN208766858U (en) | Hv cable termination infrared measurement of temperature tutoring system | |
| CN210923000U (en) | Water leakage detection device for fire-fighting robot | |
| CN204143587U (en) | A kind of cable duct fire protection alarm device | |
| CN212719234U (en) | Gas leakage remote monitoring and positioning device | |
| CN205263986U (en) | Electric fire monitoring and forewarning system based on point type temperature -sensing element | |
| CN207410005U (en) | A kind of energy saving power grid measure voltage ＆ current protective device | |
| CN206849211U (en) | A kind of transformer station's fire-preventing monitor | |
| CN208028314U (en) | A kind of security against fire intelligent socket | |
| CN206363487U (en) | A kind of warning system for magnetic resonance device | |
| CN106017271A (en) | Auxiliary scale for observing icing of power transmission line |
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 |
Application publication date: 20170818 |
|
| RJ01 | Rejection of invention patent application after publication |