CN103792872B - For the supervising device of Surge Protector, Surge Protector and armarium - Google Patents
For the supervising device of Surge Protector, Surge Protector and armarium Download PDFInfo
- Publication number
- CN103792872B CN103792872B CN201210434605.2A CN201210434605A CN103792872B CN 103792872 B CN103792872 B CN 103792872B CN 201210434605 A CN201210434605 A CN 201210434605A CN 103792872 B CN103792872 B CN 103792872B
- Authority
- CN
- China
- Prior art keywords
- surge protector
- supervising device
- power
- signal
- armarium
- 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.)
- Active
Links
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
This application discloses a kind of supervising device for Surge Protector, including：At least one acquisition module（2）；One microprogram control unit（3）, data storage to abnormal condition；One power module（1）, can continue to after device looses power as microprogram control unit（3）There is provided power supply, so that it has time enough record momentary status；With an output unit（4）.When equipment goes up electricity again, microprogram control unit（3）The abnormal condition of the history of the state of Surge Protector and Surge Protector during the power down of self-inspection last time; thus carrying out output signal process; as long as self-inspection is to protector disabler during last power down; or historical record have recorded fault message, then just output fault-signal is to output unit（4）.Disclosed herein as well is a kind of Surge Protector including described supervising device and a kind of armarium.
Description
Technical field
The present invention relates to a kind of Surge Protector technical field, more particularly, to a kind of monitoring dress for Surge Protector
Put, a kind of Surge Protector and a kind of include this Surge Protector armarium.
Background technology
Due to reasons such as short circuit, power supply switching, massive engine startup or thunders and lightnings, may in loop or communication line
Suddenly peak current or voltage, i.e. surge are produced.Therefore, extensively install in electronic equipment, instrument and meter and communication line
Surge Protector, to effectively absorb the huge energy of burst, it is to avoid surge produces infringement to equipment.Impacted by surge
Afterwards although protection can be provided for equipment, but the main unit of Surge Protector itself especially Surge Protector may
Burn out.Therefore, for ensureing the effectiveness of the Surge Protector as safety convenience instrument, know Surge Protector whether also in time
Whether be very important, otherwise equipment may be in the de-protected precarious position of mistake if can work or soon failing.
But in reality, the Surge Protector that is sometimes currently in use is due to experienced moment surge and burnt out or will burning
Bad, Surge Protector has lost defencive function, is still being continuing with without being perceived as, result frequently results in generation and sets
Standby security incident.Thus, carrying out real-time monitoring to the state of Surge Protector is extremely necessary, will fully solve surge and protect
Shield device has lost defencive function but has not been hardly perceived this problem.
Content of the invention
In view of this, the embodiment of the present invention proposes a kind of supervising device for Surge Protector, in order to more reliably
Real-time monitoring is carried out to the state of Surge Protector, historical record is done to abnormal condition, thus effectively eliminating surge protection
Device has lost defencive function but still has been continuing with such defect.The embodiment of the present invention also will propose a kind of surge protection
Device, has lost defencive function but still has been continuing with such defect in order to eliminate Surge Protector.The embodiment of the present invention is also
A kind of armarium including this Surge Protector is proposed.
According to one embodiment of the invention, there is provided a kind of supervising device for a Surge Protector, including：
At least one acquisition module, for the signal of collection reflection Surge Protector working condition；
One microprogram control unit, the signal for being gathered to acquisition module judges, and to being judged as anon-normal
Often the data of state is stored, and for recording the momentary status of Surge Protector after this supervising device power down；
One power module, can continue to provide power supply for microprogram control unit after this supervising device power down, makes shred
Sequence controller has the momentary status of time enough record Surge Protector；With
One output unit, is derived from the signal of microprogram control unit for output；
Wherein, when electricity gone up again by supervising device, microprogram control unit can self-inspection last time power down when Surge Protector
Instantaneous state and Surge Protector abnormal condition historical record, and self-inspection on once power down when surge protect
When the instantaneous state of shield device is that disabler or historical record have recorded warning or fault message, output is reported to the police or fault letter
Number arrive output unit.
According to a kind of embodiment, described power module can continue to after device looses power for microprogram control unit provide to
Few 200ms is preferably the power supply of 300ms.
Alternatively, the signal of described acquisition module collection is at least one in temperature, magnetic, light, infrared ray and electric power.
According to a kind of embodiment, the collection sensor of described acquisition module is T-shaped thermocouple.
Preferably, microprogram control unit, power module, output unit and the acquisition module collection in addition to collection sensor
Cheng Yuyi controls printed circuit board (PCB)（PCB）.
Alternatively, described microprogram control unit will be non-volatile to the data of described abnormal condition and instantaneous state write one
Memorizer.
According to a kind of embodiment, also include at least one relay, described microprogram control unit triggers described relay
With by output unit output signal.
According to another embodiment of the present invention, additionally provide a kind of Surge Protector, including a main unit, its feature exists
In also including any of the above-described kind of supervising device.
Alternatively, described supervising device is installed in the housing of Surge Protector.
Alternatively, part in addition to the collection sensor of acquisition module for the described supervising device can embed the control of an equipment
In circuit processed.
Alternatively, the main unit of this Surge Protector includes varistor, suppression diode, gas-discharge tube, electric discharge
One or more of gap and choking-winding.
According to further embodiment of this invention, there is provided a kind of armarium, including a power distribution system, this power distribution
One Surge Protector as above is installed in system.
Preferably, warning or fault-signal are supplied to the control centre of armarium by described output unit.
Preferably, described armarium further includes a catalyst, for the warning according to output unit or fault letter
Number disconnecting the main power source of armarium.
The supervising device circuit of the embodiment of the present invention is simple, can monitor in real time Surge Protector state, automatically provide report
Alert and fault-signal gives the control centre of the equipment using Surge Protector.And, the supervising device of the embodiment of the present invention can
Record the abnormal condition of the Surge Protector being gathered when not having power down, and record Surge Protector after device looses power
Momentary status, status information can be automatically saved after device looses power, root when being conducive to equipment to restart again simultaneously
According to information record, automatic detection is carried out to the function of Surge Protector, thus judging whether Surge Protector had lost efficacy or will
Lost efficacy, therefore the embodiment of the present invention can fully monitor the abnormal condition that Surge Protector occurs at any time, so as to
Enough defencive functions that is safer, realizing Surge Protector exactly.
Brief description
The preferred embodiments of the present invention will be described in detail by referring to accompanying drawing below, make those of ordinary skill in the art more
Understand the above and other feature and advantage of the present invention, in accompanying drawing：
Fig. 1 schematically shows the embodiment of the present invention for the schematic diagram of the supervising device of Surge Protector.
Fig. 2 illustrates a kind of schematic diagram of embodiment of embodiment of the present invention Surge Protector and its supervising device.
Fig. 3 and Fig. 4 is two kinds of embodiments of the Surge Protector of the supervising device being provided with the embodiment of the present invention respectively
Schematic diagram.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, detailed further to the present invention by the following examples
Describe in detail bright.
Fig. 1 schematically shows the embodiment of the present invention for the schematic diagram of the supervising device of Surge Protector.As seen from the figure, originally
The supervising device for Surge Protector of inventive embodiments includes four elementary cells, that is, power module 1, at least one
2, microprogram control unit of acquisition module（MCU）3 and an output unit 4.Supervising device equipped with the embodiment of the present invention
Surge Protector be mountable to various equipment, such as armarium, communication apparatus etc..
Function and the operation of each elementary cell are specifically described below.
Power module 1 is in supervising device power down（Equipment power down due to surge of Surge Protector is for example installed, leads to
Supervising device power down）After can continue to for MCU 3 provide power supply, make MCU 3 have the wink of time enough record Surge Protector
Between state.For example, power module 1 can continue to provide at least 200 milliseconds for MCU 3 after a power failure（ms）Power supply, power supply
Time can select in the range of 200ms-600ms, preferably 300ms.
Which kind of at least one in the signals such as acquisition module 2 collecting temperature, magnetic, light, infrared ray and electric power, specifically adopts
Signal can be selected according to specific needs and design.The collection sensor of acquisition module 2 can sense reflection surge protection
The signal of device working condition, is preferably arranged in inside Surge Protector.For example, common T-shaped thermocouple selected by collection sensor,
Temperature range is 0-300 DEG C.And the temperature signal of MCU 3 this thermocouple of real-time reception.
MCU 3 is used for the data being gathered being processed and judging, and the data being judged as abnormal condition is entered
Row storage.MCU 3 is additionally operable to record the momentary status of Surge Protector after this supervising device power down.
More specifically, MCU 3 processes gathered signal, and the signal that collection is come judges, and exports in real time
Status information.For example, if the temperature variable collecting is T, when 50 DEG C<T<When 80 DEG C, it is judged as the data of abnormal condition,
By output unit 4 output alarm signal；When T≤50 DEG C, it is judged as the data of normal condition；And when T >=80 DEG C, judge
Data for abnormal condition breaks down, and output simultaneously is reported to the police or fault-signal.Judgement for the signal being gathered
Standard, the concrete condition of the position relationship between the sensor that according to detection object, can be adopted and different components is entering
Professional etiquette is fixed, and this is that those skilled in the art are assured that by conventional method.
MCU 3 can also carry out data record, i.e. records the Surge Protector being gathered when supervising device does not have power down
Abnormal condition, for example report to the police, fault message, and after supervising device power down record Surge Protector momentary status,
And these records are write nonvolatile memory（The read only memory EPROM of for example erasable programming）Preserve.
When equipment goes up electricity again, MCU 3 can the power down of self-inspection last time when the instantaneous state of Surge Protector and wave
The historical record of the abnormal condition of surge protector, thus carry out output signal process.For example, for equipment last time power down,
Self-detection result is that the instantaneous state of Surge Protector was not lost efficacy for function, then MCU 3 does not export fault-signal.If last time is fallen
After electricity, regardless of whether having excluded high voltage surge fault, as long as self-inspection is to the instantaneous state of Surge Protector during last power down
For disabler, or self-inspection have recorded warning or fault message to historical record, then MCU 3 just report to the police or fault by output
To output unit 4, output unit 4 output is from the warning of MCU 3 or fault-signal such that it is able to avoid Surge Protector for signal
Lost efficacy but not well known, and continued to using such situation it is ensured that can safely and reliably utilize Surge Protector to protect
Shield equipment.
Output unit 4 output is derived from warning and the breakdown switch amount signal of MCU 3, for warning.Further, export list
Unit 4 may also provide signal simultaneously and drives external protector.For example, output unit 4 can provide signals to the control of equipment
Center.Furthermore it is also possible to drive a catalyst to carry out the main power source of direct off device, with the case of warning or fault
There is provided reliable safeguard protection to equipment.
There are following shortcomings in some traditional Surge Protectors：1. working condition cannot obtain monitor in real time；2. equipment falls
After electricity, Surge Protector can not record momentary status, and nor the disablement signal that produced of record Surge Protector, because
And when equipment is again started up it is impossible to judge whether to be continuing with equipment according to history information.
From the description of the above-mentioned supervising device that the embodiment of the present invention is used for Surge Protector, this supervising device circuit
Simply, can monitor in real time Surge Protector state, automatically provide warning and fault-signal to device systems control centre.
And, this supervising device is able to record that the abnormal condition of the Surge Protector being gathered when not having power down, and
And after device looses power record Surge Protector momentary status, status information can be automatically saved after device looses power simultaneously,
When being conducive to equipment to restart again, automatic detection is carried out to the function of Surge Protector according to information record, thus judge
Whether Surge Protector had lost efficacy or will lose efficacy, and therefore the embodiment of the present invention can fully monitor Surge Protector any
When the abnormal condition that occurs such that it is able to defencive function that is safer, realizing Surge Protector exactly.
The supervising device of the embodiment of the present invention and there is the reliably protecting that the Surge Protector of this supervising device can play
Effect has great importance for electronic equipment and communication line etc., such as in field of medical device, for transmission of electricity safety
Require very high, the supervising device of the present invention is installed and Surge Protector can greatly enhance the safety coefficient of equipment.
Fig. 2 illustrates that the embodiment of the present invention is used for a kind of schematic diagram of embodiment of Surge Protector and its supervising device.
It is main unit SP of Surge Protector in the left side of diagram, be the control printed circuit board (PCB) of supervising device on the right side of diagram.
Wherein, main unit SP of this Surge Protector can include varistor, suppression diode, gas-discharge tube, discharging gap
One or more of with choking-winding.
In figure illustrates that main unit SP includes four varistors R1, R2, R3 and R4, and this four varistors are connected to and three
Four line L1, L2, L3 and N being electrically connected.The function of main unit SP is when circuit inputs instantaneous pressure or device interior LC
When circuit produces high pressure, high pressure is made to be connected to the earth, it is to avoid high pressure access arrangement, thus protection equipment.In the example shown, by temperature
Sensor TS is positioned over the longitudinal inwall neighbouring with R3 of R2, and this temperature sensor TS is, for example, T-shaped thermocouple.
Printed circuit board (PCB) carries a MCU.Interface X1（Including X1 (1) and X1 (2)）Connect thermocouple TS and gather signal
T, X2（Including X2 (1) and X2 (2)）For power module, connect 24V DC source, continue as in equipment and supervising device power down
MCU provides the power supply no less than 300ms, X3 and X4 is output unit, wherein X3（Including X3 (1) and X3 (2)）For surge protection
Device warning output, X4（Including X4 (1) and X4 (2)）For the output of Surge Protector fault.For example, when 50 DEG C<T<When 80 DEG C, MCU
Trigger relay K1, by X3 output alarm signal；And when T >=80 DEG C, MCU trigger relay K2, fault is exported by X4
Signal.In addition, X4 can connect one group of drive signal to catalyst or other actuator to cut off main power source.
When power down or equipment are closed, MCU can automatically save the up-to-date warning of Surge Protector and error condition, makes to set
Standby Surge Protector state can be carried out when restarting to report to the police and fault-signal automatic detection, it is to avoid protector mistake
It is continuing with after effect and cause serious accident.For example, when the power distribution system being applied to CT（PDS）When, open in equipment
When dynamic, can be according to information to this power distribution system function self-inspection.
Report to the police and rub-out signal can inform equipment control centre in real time, according to the requirement to power protection for the equipment and
Related product standard carries out troubleshooting.For example, when being applied to the power distribution system of CT, when electrical network produces instantaneous pressure
And disconnected mutually and when producing reverse instantaneous pressure, this protector can feed back information to CT system in real time, CT system is by root
It is believed that number carrying out the protection of correlation, these information records are got off, so that product repairing simultaneously.
Fig. 3 and 4 is two kinds of embodiments of the Surge Protector of the supervising device being provided with the embodiment of the present invention respectively
Schematic diagram, is wherein still come illustrative with the Surge Protector of varistor form.
As shown in figure 3, embodiment of the present invention supervising device controlled printing board PCB as the one of Surge Protector
Individual adnexa is installed in the housing of Surge Protector, thus control function is embedded into the inside of Surge Protector.
Fig. 4 illustrates another kind of collocation form of embodiment of the present invention supervising device.In this collocation form, Surge Protector carries
For signal（Such as temperature）Output interface X1（Including X1 (1) and X1 (2)）, the function of printing board PCB will be controlled（Described prison
The part in addition to the collection sensor of acquisition module of control device）Inside the control circuit of an embedded equipment, wherein this equipment
Above-mentioned surge ripple protector is installed.
Although Surge Protector is explanation acquisition module taking varistor as a example in Fig. 2-4 illustrated embodiment, this
Skilled person should understand that, to gather the signals such as magnetic, light, infrared ray, electric power using other acquisition modules.
The embodiment of the present invention also provides a kind of armarium, CT equipment, MRI machine or X-ray machine etc..This medical treatment
Equipment includes a power distribution system, is provided with a Surge Protector as above in this power distribution system.
As described above, warning or fault-signal can be supplied to the control of armarium by the output unit 4 of supervising device
Center.
Armarium can further include a catalyst, for the warning according to output unit 4 or fault-signal Lai
Disconnect the main power source of armarium.
The Surge Protector for the supervising device of Surge Protector and using this supervising device to the present invention above
Preferred implementation be illustrated, the supervising device as described previously for the present invention and the specific features of Surge Protector
As shape, size the effect of feature according to disclosed in above-mentioned can carry out specific design, these designs are all those skilled in the art
It is capable of.In addition, those skilled in the art the feature of the various embodiments of above-mentioned disclosure can also be combined and
Change, is defined by the purpose realizing the present invention.
This application discloses a kind of supervising device for Surge Protector, including：At least one acquisition module；One micro-
Cyclelog, the data processing to collection and judgement, the data storage to abnormal condition；One power supply mould of power-supply system
Block, can continue to provide power supply for microprogram control unit, so that it has time enough record moment after device powers down power down
State；With an output unit.Microprogram control unit carries out data record, i.e. record the anon-normal being gathered when not having power down
Often state, records the momentary status of Surge Protector after device looses power, and these records write EPROM is preserved.Work as equipment
When going up electricity again, the history of the state of Surge Protector and Surge Protector during the power down of microprogram control unit self-inspection last time
Abnormal condition, thus carrying out output signal process, as long as self-inspection is to protector function during the last last time power-off power down
Lost efficacy, or historical record have recorded fault message, then just output fault-signal was to output unit.Disclosed herein as well is
A kind of Surge Protector including described supervising device and a kind of armarium.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (13)
1. a kind of supervising device for a Surge Protector, including：
At least one acquisition module (2), for the signal of collection reflection Surge Protector working condition；
One microprogram control unit (3), the signal for being gathered to acquisition module (2) judges, and non-to being judged as
The data of normal condition is stored, and for recording the momentary status of Surge Protector after this supervising device power down；
One power module (1), can continue to provide power supply for microprogram control unit (3) after this supervising device power down, makes micro-
Cyclelog (3) has the momentary status of time enough record Surge Protector；With
One output unit (4), is derived from the signal of microprogram control unit (3) for output；
Wherein, when electricity gone up again by supervising device, microprogram control unit (3) can the power down of self-inspection last time when Surge Protector
The historical record of the abnormal condition of instantaneous state and Surge Protector, and self-inspection on once power down when surge protection
When the instantaneous state of device is that disabler or historical record have recorded warning or fault message, output is reported to the police or fault-signal
To output unit (4).
2. supervising device as claimed in claim 1, wherein, described power module (1) can continue to as micro- after device looses power
Cyclelog (3) provides at least power supply of 200ms.
3. supervising device as claimed in claim 2, wherein, described power module (1) can continue to as micro- after device looses power
Cyclelog (3) provides the power supply of 300ms.
4. supervising device as claimed in claim 1, wherein, signal that described acquisition module (2) gathers is temperature, magnetic, light, red
At least one in outside line and electric power.
5. supervising device as claimed in claim 1, wherein, the collection sensor of described acquisition module is T-shaped thermocouple.
6. the supervising device as any one of claim 1-5, wherein, microprogram control unit (3), power module (1), defeated
Go out unit (4) and the acquisition module (2) in addition to collection sensor is integrated in a control printed circuit board (PCB) (PCB).
7. supervising device as claimed in claim 1, wherein, also includes at least one relay (K1, K2), described microprogram control
Device (3) processed triggers described relay with by output unit (4) output signal.
8. a kind of Surge Protector, including a main unit it is characterised in that also including as any one of claim 1-7 institute
The supervising device stated.
9. Surge Protector as claimed in claim 8, wherein, described supervising device is installed in the housing of Surge Protector.
10. Surge Protector as claimed in claim 8, wherein, described supervising device remove acquisition module collection sensor it
Outer part can embed in the control circuit of an equipment.
A kind of 11. armarium, including a power distribution system, are provided with just like claim 8-10 in this power distribution system
Any one of Surge Protector.
12. armarium as claimed in claim 11, wherein, warning or fault-signal are supplied to by described output unit (4)
The control centre of armarium.
13. armarium as claimed in claim 11, wherein, described armarium further includes a catalyst, for root
To disconnect the main power source of armarium according to the warning of output unit (4) or fault-signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210434605.2A CN103792872B (en) | 2012-11-02 | 2012-11-02 | For the supervising device of Surge Protector, Surge Protector and armarium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210434605.2A CN103792872B (en) | 2012-11-02 | 2012-11-02 | For the supervising device of Surge Protector, Surge Protector and armarium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103792872A CN103792872A (en) | 2014-05-14 |
| CN103792872B true CN103792872B (en) | 2017-03-08 |
Family
ID=50668663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210434605.2A Active CN103792872B (en) | 2012-11-02 | 2012-11-02 | For the supervising device of Surge Protector, Surge Protector and armarium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103792872B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549510A (en) * | 2015-12-31 | 2016-05-04 | 天津鑫源达泰建筑工程有限公司 | Monitoring system of surge protection device |
| DE102017200125B3 (en) * | 2016-12-20 | 2018-03-01 | Siemens Aktiengesellschaft | Arrangement and method for condition monitoring of a surge arrester |
| CN110301822A (en) * | 2018-03-27 | 2019-10-08 | 佛山市顺德区美的饮水机制造有限公司 | Water dispenser and its fault detection method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9901286D0 (en) * | 1999-01-22 | 1999-03-10 | Zymax International Limited | Surge protector |
| CN200941243Y (en) * | 2005-12-23 | 2007-08-29 | 广西地凯科技有限公司 | Radio remote monitoring system |
| CN101102041B (en) * | 2006-07-07 | 2011-06-15 | 上海雷迅防雷技术有限公司 | Surge protector with automatic monitoring function |
| CN100449903C (en) * | 2007-05-08 | 2009-01-07 | 桂林工学院 | Intelligent power arrester |
| CN201887465U (en) * | 2010-12-22 | 2011-06-29 | 上海雷迅防雷技术有限公司 | Intelligent surge protector with line monitoring function |
| CN202050230U (en) * | 2010-12-29 | 2011-11-23 | 孙巍巍 | Surge protector with monitoring function |
-
2012
- 2012-11-02 CN CN201210434605.2A patent/CN103792872B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103792872A (en) | 2014-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103792872B (en) | For the supervising device of Surge Protector, Surge Protector and armarium | |
| CN108245049B (en) | Fault processing method of food processor | |
| CN110571884A (en) | direct-current charger with online monitoring function of discharge loop and online monitoring method of discharge loop | |
| CN104392757A (en) | DCS for nuclear power station | |
| CN108099623A (en) | A kind of battery protecting method and device based on cell voltage | |
| CN203983943U (en) | A kind of regulator cubicle arc light detecting device | |
| CN110040024A (en) | A kind of electric car charger | |
| CN112906074B (en) | Data self-destruction circuit | |
| CN219801979U (en) | Platform region operation monitoring and alarming device | |
| CN100452599C (en) | Protection method for detecting power module outlet internal short-circuit and detection protecting circuit | |
| CN111948575A (en) | Current transformer secondary side neutral line disconnection detection method and device | |
| CN105549510A (en) | Monitoring system of surge protection device | |
| CN110410309A (en) | Large-scale compressor set auxiliary machinery method for monitoring operation states | |
| CN106813342B (en) | Control method of infrared humidifying device and infrared humidifying device | |
| CN216086135U (en) | Online comprehensive intelligent circuit breaker | |
| CN210327005U (en) | Leading protection device of voltage transformer | |
| CN107884686A (en) | A kind of L N lines insulation degradation monitoring method | |
| CN114153301A (en) | Power failure monitoring device and method and external protective equipment | |
| CN109193568B (en) | Thermal protection device, motor and thermal protection method thereof | |
| CN113054624A (en) | Special breaker for intelligent low-voltage surge protector and control method thereof | |
| CN111525690A (en) | Intelligent system capable of monitoring and controlling power grid state in real time | |
| CN107026411B (en) | A kind of intelligent protection device and its implementation of armouring power high voltage equipment internal discharge failure | |
| CN219204081U (en) | Alarm circuit and device of generator | |
| CN105262066A (en) | DC intelligent protective unit | |
| CN215498266U (en) | Electric power iron tower arrester protection device |
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 |