CN105633934B - A kind of novel surge protector - Google Patents
A kind of novel surge protector Download PDFInfo
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- CN105633934B CN105633934B CN201410669097.5A CN201410669097A CN105633934B CN 105633934 B CN105633934 B CN 105633934B CN 201410669097 A CN201410669097 A CN 201410669097A CN 105633934 B CN105633934 B CN 105633934B
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- magnetic field
- surge
- protective device
- overcurrent protective
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Abstract
The present invention relates to a kind of novel surge protector, including lightning protection component, overcurrent protective device, thermel protection device and shell, the lightning protection component and overcurrent protective device surge in series are released access, and the thermel protection device is located on lightning protection component electrode；The utility model surge protector further includes magnetic field induction device, judgment means, disjunction executing agency, section breaker, signal sensor, signal transmssion line, overcurrent protective device detector, data cell, connecting line, connection terminal.The utility model surge protector solve at all existing thermel protection device and overcurrent protective device action blind area and overcurrent protective device, the action situation of thermel protection device and lightning protection component working condition it is unknowable, caused security hidden trouble.
Description
Technical field
The invention belongs to the surge protection technical fields of electronic electric equipment.
Background technology
Thunder and lightning is a kind of special weather phenomenon caused by being discharged in the air by the cloud charged.Thunder and lightning is to cause electronic equipment
The major reason of damage, it threatens the peace of the every field electronic informations such as building, railway, civil aviaton, communication, industry control, military affairs
Full stable operation.Surge protection is installed on the metallic circuits such as the power cord, signal wire and control line being connect with electronic equipment
Device is one of important measures of lightning protection.Surge protector has been widely used in various fields, has weight in lightning protection
The effect wanted.The quality of its state then directly affects its lightning protection effect, to carry out hidden danger to the safety belt of protected equipment.
SPD usually has two kinds of protective devices of Thermal protection and overcurrent protection (internal or external), heat when in use at this stage
Protective device is used for protecting lightning protection component deterioration fever, caused by overcurrent protective device is used for preventing transient over-current or overvoltage
Lightning protection component puncture short, while a kind of back-up protection mode of the overcurrent protection as Thermal protection, so most of occasions all
Effective protective action can be played.
However, since heat transfer is a relatively slow process, the sensitivity of thermel protection device is low, for slowly heating up
Process still plays effective protection, and for it is low (in) steep temperature rise caused by under sustained over voltage condition in pressure system
Situation, Thermal protection trip gear cannot perceive this process without acting, cause lightning protection component breakdown, power current in time
Into SPD circuits, when this power frequency electric flow valuve does not reach the initiation value of overcurrent protective device, overcurrent protective device will not be sent out
It is lively to make, it is on fire so as to cause SPD；If the initiation value of overcurrent protective device is selected small, though can start, it is difficult to resist lightning current
Impact, cause SPD that can not normally release lightning current.
Moreover, existing surge protector thermel protection device and overcurrent protective device action state cannot by user and
When grasp, while the use state of surge protector internal lighting protection element can not be known by user, thus cause cannot and
When maintenance surge protector or replace internal element or device, cause lightning stroke or other accidents.
In conclusion the overcurrent protective device of existing SPD and thermel protection device are there are serious action blind area, SPD passes through
In the electric current in this region, the SPD that thermel protection device and overcurrent protective device cannot will all damage is detached from main circuit, to go out
Existing serious security risk；Overcurrent protective device and the action situation of thermel protection device and the working condition of lightning protection component simultaneously
It cannot in time be learnt by user, equally bring serious security risk.
Invention content
In order to effectively solve problem above in the prior art, the present invention proposes a kind of easy for installation and dependable performance use
In the novel surge protector of power-supply system, action blind area and the mistake of existing thermel protection device and overcurrent protective device are solved at all
The working condition for flowing protective device, the action situation of thermel protection device and lightning protection component is unknowable, caused security risk
Problem.
The present invention uses following technical scheme：The present invention is for the surge protector in power electronic circuits system, packet
Include lightning protection component, overcurrent protective device, thermel protection device and shell；The lightning protection component and overcurrent protective device series connection, are constituted
Surge is released access, and the thermel protection device is located on lightning protection component electrode.The invention also includes magnetic field induction device, judge dress
Set, disjunction executing agency, section breaker, signal sensor, signal transmssion line, overcurrent protective device detector, data cell, company
Wiring, connection terminal；The magnetic field induction device is released around access mounted on surge, and is connect with judgment means input terminal；
The judgment means output end is connect with disjunction executing agency；The disjunction actuating mechanism controls section breaker action；Described point
It disconnects and closes normally closed and be series at surge and release in access；The signal sensor be installed on lightning protection component electrode surface or near,
Or be installed on surge and release near access, it is connect with data cell by signal transmssion line；The overcurrent protective device detector
Overcurrent protective device both ends are parallel to, are connect with data cell by signal transmssion line；The data cell by connecting line with
Connection terminal connects.
The signal sensor can be installed on lightning protection component electrode surface or near, detect temperature, the magnetic of lightning protection component
The signals such as field, infrared；Surge can also be installed on to release near access, detection surge release the temperature of access, magnetic field, it is infrared,
The signals such as electric power；Signal sensor can also detect the action situation of thermel protection device.The overcurrent protective device detector
The state of overcurrent protective device can be detected, and is exported to data cell by signal transmssion line.The data cell in-built electrical
Source, or power supply is obtained outside connection terminal by connecting line.
Heretofore described judgment means built-in power and data processing unit；The break-up device can pass through mechanical linkage
Or electromagnetic mode or the mode of the two combination control section breaker action；The section breaker, which has, can make it restore normally off
Reset unit；The overcurrent protective device can be fuse or breaker；The lightning protection component, including varistor,
One or a combination set of discharge tube, TVS.
Core of the invention mechanism is magnetic field induction device and judgment means.When thering is electric current to flow through on access is released in surge
When, magnetic field induction device can sense magnetic field caused by the electric current, and the magnetic field signal sensed is passed through judgment means
Input terminal is transferred to the data processing unit built in judgment means, the data processing unit or according to the size in magnetic field, direction,
The physical quantitys such as change rate, duration judge magnetic field type (surge current, small power current, action blind area in power frequency electric
Stream, the magnetic field generated more than the power current for acting blind area are different)；Or magnetic field signal is converted into basis after current signal
The physical quantitys such as size, direction, change rate, the duration of the electric current judge to flow through the type of the electric current of surge leadage circuit.If
Judging result be smaller power current generate magnetic field (or being smaller power current), then disjunction executing agency be failure to actuate, disjunction
Switch does not turn off, and is protected by thermel protection device, and signal sensor is able to detect that thermel protection device acts at this time, can be by this
Signal is sent to data cell by data line, and data cell is connected by connecting line, connection terminal with external equipment, institute
It can be data acquisition equipment, the network switching equipment, monitoring device etc. to state external equipment；If judging result is in action blind area
The magnetic field (or being the power current in action blind area) that power current generates, then the action of disjunction executing agency, section breaker disconnect,
The access disconnection so that surge is released, overcurrent protective device detector will detect that overcurrent protective device has disconnected at this time, can be by this
Signal is sent to data cell by data line, and data cell, which is sent by connecting line to connection terminal external equipment, to be believed
Number, the external equipment can be data acquisition equipment, the network switching equipment, monitoring device etc.；If judging result is more than dynamic
Make the magnetic field (or for more than the power current for acting blind area) that the power current of blind area generates, then disjunction executing agency (7) is motionless
Work, section breaker do not turn off, and are directly protected by overcurrent protective device, and overcurrent protective device detector will detect that overcurrent is protected at this time
Protection unit has disconnected, and can this signal be sent to data cell by data line, and data cell is by connecting line to connection
Terminal outer equipment sends signal, and the external equipment can be data acquisition equipment, the network switching equipment, monitoring device etc.；
If judging result is the magnetic field (or being surge current) that surge current generates, by lightning protection component and overcurrent protective device series connection structure
It normally releases at surge access of releasing, signal sensor is able to detect that lightning protection component itself or surge are released temperature on access at this time
The variation of the signals such as degree, magnetic field, infrared, electric power the record lightning stroke time, will to analyze the information such as lightning current size, waveform
This type of information is sent to data cell by data line, and data cell passes through connecting line, connection terminal and external equipment phase
Even, the external equipment can be data acquisition equipment, the network switching equipment, monitoring device etc..
In the above Four processes, signal sensor can all release the lightning protection component detected or surge temperature on access
The signals such as degree, magnetic field, infrared, electric power are sent to data cell through data line, and data cell is by connecting line to connection
Terminal outer equipment sends signal, with learn the use state of lightning protection component, the service life, generation logout.The outside is set
Standby can be data acquisition equipment, the network switching equipment, monitoring device etc..
The present invention is characterized in that：
1. the utility model surge protector releases in surge and is provided with section breaker on access, by magnetic field induction device, sentence
Effective cooperation of disconnected device, disjunction executing agency and section breaker, solves the action of thermel protection device and overcurrent protective device
Blind zone problem；
2. the lightning protection component of the utility model surge protector, overcurrent protective device, thermel protection device, is sentenced magnetic field induction device
Disconnected device, disjunction executing agency, section breaker, signal sensor, signal transmssion line, overcurrent protective device detector, data sheet
Member, connecting line, connection terminal can be integrated in one, and are loaded on shell, meet electrical equipment to surge protector discharge capacity, sound
With the requirement of three indexs of voltage protection level between seasonable, the reliability of equipment is enhanced, can also be mounted in group in different modules
It is combined and collectively forms the present invention, be easily installed use；
3. the disjunction executing agency in the utility model surge protector acts or is failure to actuate according to the judging result of judgment means,
Energy needed for disjunction executing agency can be supplied by judgment means, can also be configured individual power supply, can also be supplied by power cord；
4. the present invention can not have overcurrent protective device；
5. the connection terminal of the utility model surge protector can be connected with external equipment, by signal sensor and overcurrent protection
The signal that device detector detects is sent to external equipment, and monitoring personnel is made to grasp the various states of surge protector.It is described
External equipment can be data acquisition equipment, the network switching equipment, monitoring device etc..The data acquisition equipment can acquire more
The information of a surge protector, the network switching equipment can connect multiple data acquisition equipments.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is first embodiment of the present invention principle schematic.
Fig. 3 is second embodiment of the present invention principle schematic.
Fig. 4 is third embodiment of the present invention principle schematic.
Fig. 5 is protecting effect schematic diagram of the present invention.
Fig. 6 is group network system first embodiment schematic diagram of the present invention.
Fig. 7 is group network system second embodiment schematic diagram of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples：
As shown, 1 is that surge is released access, 2 be magnetic field induction device, and 3 be lightning protection component, and 4 be overcurrent protective device,
5 be data processing unit, and 6 be judgment means, and 7 be disjunction executing agency, and 8 be section breaker, and 9 be thermel protection device, and 10 be outer
Shell, 11 be signal sensor, and 12 be signal transmssion line 1,13 be overcurrent protective device detector, and 14, which be signal transmssion line 2,15, is
Data cell, 16 be connecting line, and 17 be connection terminal, and 18 be the utility model surge protector, and 19 be data acquisition equipment, and 20 be prison
Equipment is controlled, 21 be connecting line 1,22 be data line, and 23 be the network switching equipment, and 24 be the reset unit of section breaker, and aa ' is to sentence
The input terminal of disconnected device, bb ' is the output end of judgment means.
Fig. 1 is the utility model surge protector first embodiment, and the utility model surge protector has overcurrent guarantor in this embodiment
Protection unit (4), the lightning protection component (3) and overcurrent protective device (4) surge in series are released access (1)；The magnetic field sense
It answers device (2) to release access (1) around mounted on surge, and is connect with judgment means (6) input terminal (aa ')；The judgement dress
(6) output end (bb ') is set to connect with disjunction executing agency (7)；The thermel protection device (9) is located on lightning protection component (3) electrode；
The signal sensor (11) is installed on lightning protection component (3) surface, the letters such as the temperature of detection lightning protection component (3), magnetic field, infrared
Number, the action situation of signal sensor (11) while also detection thermel protection device (9), and exported by signal transmssion line 1 (12)
Give data cell (15)；The overcurrent protective device detector (13) is connected in parallel on overcurrent protective device (4) both ends, and detection overcurrent is protected
The state of protection unit (4), and exported by signal transmssion line 2 (14) and give data cell (15)；The data cell (15) is built-in
Power supply can also obtain power supply by connecting line (16) outside connection terminal (17).
When having electric current to flow through on access (1) is released in surge, magnetic field induction device (2) can sense caused by the electric current
Magnetic field, and the magnetic field signal sensed is transferred to by the input terminal (aa ') of judgment means (6) built in judgment means (6)
Data processing unit (5), data processing unit (5) or according to physical quantitys such as the size in magnetic field, direction, change rate, duration
Judge magnetic field type (surge current, small power current, action blind area in power current, more than action blind area power frequency electric
The raw magnetic field of miscarriage is different)；Or magnetic field signal is converted to after current signal according to the size of the electric current, direction, variation
The physical quantitys such as rate, duration judge to flow through the type of the electric current of surge leadage circuit.If judging result is smaller power current
The magnetic field (or being smaller power current) of generation, then disjunction executing agency (7) is failure to actuate, section breaker (8) does not turn off, and is protected by heat
Protection unit (9) is protected, and signal sensor (11) is able to detect that thermel protection device (9) acts at this time, can pass through this signal
Cross signal transmssion line 1 (12) and be sent to data cell (15), data cell (15) by connecting line (16), connection terminal (17) with
External equipment is connected, and the external equipment can be data acquisition equipment, the network switching equipment, monitoring device etc.；If judging knot
Fruit is the magnetic field (or power current to act in blind area) for acting the power current in blind area and generating, then disjunction executing agency
(7) action, section breaker (8) disconnect, the access disconnection so that surge is released；If judging result is more than the power frequency electric of action blind area
Miscarry raw magnetic field (or being more than power current of action blind area), then disjunction executing agency (7) be failure to actuate, section breaker (8)
It does not turn off, is directly protected by overcurrent protective device (4), overcurrent protective device detector (13) will detect that overcurrent protection fills at this time
It sets (4) to have disconnected, this signal can be sent to data cell (15) by signal transmssion line 2 (14), data cell (15) passes through
Connecting line (16) sends signal to connection terminal (17) external equipment, and the external equipment can be data acquisition equipment, network
Switching equipment, monitoring device etc.；If judging result is the magnetic field (or being surge current) that surge current generates, by lightning protection component
(3) it normally releases with overcurrent protective device (4) surge in series access (1) of releasing, signal sensor (11) can be examined at this time
It measures lightning protection component (3) itself or surge is released the variations of signals such as temperature, magnetic field, infrared, electric power on access (1), to
The information such as lightning current size, waveform are analyzed, the record lightning stroke time, this type of information are sent to number by signal transmssion line 1 (12)
According to unit (15), data cell (15) is connected by connecting line (16), connection terminal (17) with external equipment, the external equipment
Can be data acquisition equipment, the network switching equipment, monitoring device etc..
The section breaker has the reset unit (being not drawn into schematic diagram) that it can be made to restore normally off；The disjunction
Executing agency can control section breaker action by way of mechanical linkage or electromagnetic mode or the two combination and (implement shown in Fig. 1
Disjunction executing agency (7) described in example is to control section breaker by electromagnetic mode to act, and other control modes are herein not
It repeats).
The lightning protection component can be one or a combination set of electronic devices such as varistor, discharge tube, TVS；The overcurrent
Protective device can be fuse or breaker.
Fig. 2 is the corresponding principle schematics of Fig. 1 (first embodiment), and the reset unit of section breaker (8) is depicted in figure
(24) data processing unit (5) and built in judgment means (6)；The reset unit (24) can make section breaker restore normally closed shape
State；The data processing unit (5) can not by magnetic field signal be converted to the function of current signal, magnetic field is handled,
Analysis, it is possibility to have the function simultaneously handles the electric current of conversion, analyzes that (data processing unit in following embodiment is equal
It is identical as the data processing unit in the present embodiment, repeat no more), aa ' is the input terminal of judgment means, and bb ' is judgment means
Output end.
Fig. 3 is the utility model surge protector second embodiment principle schematic, and the reset of section breaker (8) is depicted in figure
Data processing unit (5) built in unit (24) and judgment means (6).Without overcurrent protection in the surge protector of the embodiment
Device (4) is only held including release access (1), magnetic field induction device (2), lightning protection component (3), judgment means (6), disjunction of surge
Row mechanism (7), section breaker (8), thermel protection device (9), signal sensor (11), signal transmssion line 1 (12), data cell
(15), connecting line (16), connection terminal (17), wherein aa ' are the input terminals of judgment means, and bb ' is the output end of judgment means.
Because surge protector is when in use, if without built-in overcurrent protective device, rear end must concatenate overcurrent protective device,
Therefore the present embodiment description novel surge protector have power current by when its can be allowed external overcurrent protective device
It acts in time and surge protector is detached from protection circuit.
The component content of the utility model surge protector is mounted in different shells and collectively forms in embodiment shown in Fig. 4
The present invention.Wherein, overcurrent protective device (4) and overcurrent protective device detector (13) are placed in same housing, magnetic field induction dress
Set (2), lightning protection component (3), judgment means (6), disjunction executing agency (7), section breaker (8), thermel protection device (9), signal
Detector (11), signal transmssion line 1 (12), data cell (15), connecting line (16), connection terminal (17) are placed in same housing,
Wherein aa ' is the input terminal of judgment means, and bb ' is the output end of judgment means.
In Fig. 1, embodiment illustrated in fig. 2, the lightning protection component (3) of the utility model surge protector, magnetic field induction device (2), mistake
Flow protective device (4), thermel protection device (9), judgment means (6), disjunction executing agency (7), section breaker (8), signal detection
Device (11), signal transmssion line (including signal transmssion line 1 (12) and signal transmssion line 2 (14)), overcurrent protective device detector
(13), data cell (15), connecting line (16), connection terminal (17) are integrated in one, and are loaded on a shell, meet electrical equipment
Requirement to three surge protector discharge capacity, response time and voltage protection level indexs, enhances the reliability of equipment,
The composition of the utility model surge protector, which is encapsulated in combine in different modules, in Fig. 3, embodiment illustrated in fig. 4 collectively forms
The present invention is easily installed use, enhances practicability.
Fig. 5 is protecting effect schematic diagram of the present invention.Power frequency short circuit current can be divided into three parts：Small power frequency short circuit current,
Refer to the current range that thermel protection device can start；Big power frequency short circuit current, refers to the electric current model that overcurrent protective device can start
It encloses；And fall between, be also existing surge protector protective device power frequency short circuit current action blind area, it is referred to as dynamic
Make blind area.
Fig. 6 is group network system first embodiment schematic diagram of the present invention, and connecting line 1 (21) is by several the utility model surges in figure
Protector (18) is connected after linking together with data acquisition equipment (19), data acquisition equipment (19) by data line (22) with
Monitoring device (20) is connected.The connecting line 1 (21) accesses the connection terminal (17) of the utility model surge protector (18), the number
Internally data cell (15) power supply can be provided according to collecting device (19).The connecting line 1 (21) can be 485 buses or CAN
Bus or other line styles.The data line (22) can be cable, optical fiber or other line styles.
Fig. 7 is group network system second embodiment schematic diagram of the present invention, and the network switching equipment (23) can acquire multiple numbers in figure
According to the data of collecting device (19), simultaneous transmission gives monitoring device (20), constitutes the intelligent monitoring network of surge protector (18).
Using technical scheme of the present invention, reach corresponding technique effect, or think in the design for not departing from the present invention
Technical solution equivalents under thinking, within protection scope of the present invention.
Claims (7)
1. a kind of surge protector, including lightning protection component, overcurrent protective device, thermel protection device and shell, the lightning protection component
It releases access with overcurrent protective device surge in series, the thermel protection device is located on lightning protection component electrode, and feature exists
In：Further include magnetic field induction device, judgment means, disjunction executing agency, section breaker, signal sensor, signal transmssion line, mistake
Flow protective device detector, data cell, connecting line, connection terminal；The overcurrent protective device is fuse or breaker；Institute
It states magnetic field induction device to release around access mounted on surge, and is connect with judgment means input terminal；It is set in the judgment means
There are power supply, the size for analyzing magnetic field, direction, change rate, duration physical quantity or magnetic field signal is converted into current signal simultaneously
Analyze the size of the electric current, direction, change rate, duration physical quantity data processing unit, the data processing unit warp
Judgment means input terminal is connected with magnetic field induction device；When thering is electric current to flow through on access is released in surge, the magnetic field induction dress
It sets detection surge to release magnetic field caused by passage current, and the magnetic field signal detected is transmitted by judgment means input terminal
To the data processing unit built in judgment means, the data processing unit according to the size in magnetic field, direction, change rate, continue
Time physical quantity judges the type in magnetic field, or magnetic field signal is converted to after current signal according to the size of electric current, direction, variation
Rate, duration physical quantity judge to flow through surge and release the type of passage current；If judging result is small power current or unskilled labourer
Frequency electric current generate magnetic field, then disjunction executing agency be failure to actuate, section breaker does not turn off, and is protected by thermel protection device；If
Judging result is the magnetic field for acting the power current in blind area or the power current in action blind area and generating, then disjunction executing agency
Action, section breaker disconnect, and disconnect surge and release access；If judging result is more than the power current of action blind area or more than dynamic
Make the magnetic field that the power current of blind area generates, then disjunction executing agency is failure to actuate, and section breaker does not turn off, by overcurrent protective device
Protection；If judging result is magnetic field caused by surge current or surge current, normally released by surge access of releasing；It is described
Judgment means output end is connect with disjunction executing agency；The disjunction actuating mechanism controls section breaker action；The disjunction is opened
It closes normally closed and is series at surge and releases in access；The signal sensor be installed on lightning protection component electrode surface or near, or peace
It releases near access loaded on surge, the signal sensor is connect by signal transmssion line with data cell；The overcurrent protection
Device detector is parallel to overcurrent protective device both ends, is connect with data cell by signal transmssion line；The data cell is logical
Connecting line is crossed to connect with connection terminal.
2. surge protector according to claim 1, it is characterised in that：The surge protector does not include that overcurrent protection fills
It sets.
3. surge protector according to claim 1 or 2, it is characterised in that：The section breaker, which has, makes it restore normal
The reset unit of closed state.
4. surge protector according to claim 1 or 2, it is characterised in that：The disjunction executing agency is joined by machinery
Dynamic or electromagnetic mode or the mode of the two combination control section breaker action.
5. surge protector according to claim 1 or 2, it is characterised in that：The lightning protection component, magnetic field induction device,
Overcurrent protective device, thermel protection device, judgment means, disjunction executing agency, section breaker, signal sensor, signal transmssion line,
Overcurrent protective device detector, data cell, connecting line, connection terminal are located at same housing, or are installed on different housings or envelope
It is combined in different modules.
6. surge protector according to claim 1 or 2, it is characterised in that：The lightning protection component is varistor, electric discharge
One or a combination set of pipe, TVS electronic devices.
7. surge protector according to claim 1 or 2, it is characterised in that：The data cell passes through connecting line, connection
Terminal is connected with external equipment, and the external equipment is data acquisition equipment, the network switching equipment, monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669097.5A CN105633934B (en) | 2014-11-10 | 2014-11-10 | A kind of novel surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669097.5A CN105633934B (en) | 2014-11-10 | 2014-11-10 | A kind of novel surge protector |
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| Publication Number | Publication Date |
|---|---|
| CN105633934A CN105633934A (en) | 2016-06-01 |
| CN105633934B true CN105633934B (en) | 2018-11-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Surge protector with detection device |
| CN102545185A (en) * | 2010-12-29 | 2012-07-04 | 孙巍巍 | Surge protector with spare protection module |
| CN103855695A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN204391726U (en) * | 2014-11-10 | 2015-06-10 | 孙麓轩 | A kind of Novel electric surge protector |
-
2014
- 2014-11-10 CN CN201410669097.5A patent/CN105633934B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Surge protector with detection device |
| CN102545185A (en) * | 2010-12-29 | 2012-07-04 | 孙巍巍 | Surge protector with spare protection module |
| CN103855695A (en) * | 2012-12-05 | 2014-06-11 | 孙巍巍 | Novel surge protection device |
| CN204391726U (en) * | 2014-11-10 | 2015-06-10 | 孙麓轩 | A kind of Novel electric surge protector |
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| Publication number | Publication date |
|---|---|
| CN105633934A (en) | 2016-06-01 |
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