CN103779854A - Novel surge protection device - Google Patents
Novel surge protection device Download PDFInfo
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- CN103779854A CN103779854A CN201210413119.2A CN201210413119A CN103779854A CN 103779854 A CN103779854 A CN 103779854A CN 201210413119 A CN201210413119 A CN 201210413119A CN 103779854 A CN103779854 A CN 103779854A
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- current sensor
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Abstract
The invention relates to a novel surge protection device. The novel surge protection device includes a disconnection switch, a current sensor 1, a current sensor 2, a detection driving unit, a disconnection actuator, an inductor and a lightning protection device, wherein the lightning protection device is connected in series with the disconnection switch, the detection driving unit in the surge protection device detects leak current state information of a line according to the current sensor 1 so as to drive the disconnection actuator to drive the disconnection switch to act, such that the surge protection device (SPD) can be separated from a protection line; and the current sensor 2 detects power frequency current in the line, and directly drives the disconnection actuator to drive the disconnection switch to switch off a surge protection device (SPD) closed circuit. The novel surge protection device of the invention is advantageous in convenient installation, avoidance of dead zones of an existing surge protection device (SPD) backup protection mode, and strong reliability.
Description
Technical field
The invention belongs to the surge protection technical field of electronic electric equipment.
Background technology
Thunder and lightning is by the charged cloud a kind of special weather phenomenon causing of aloft discharging.Thunder and lightning is the major reason that causes electronic equipment to damage, and it threatens the safe and stable operation of the every field electronic informations such as building, railway, civil aviaton, communication, industry control, military affairs.On the metallic circuits such as the power line being connected with electronic equipment, holding wire and control line, surge protector being installed is one of important measures of lightning protection.Surge protector has been widely used in various fields, has important effect in lightning protection.The quality of its state directly affects its lightning protection effect, thereby the safety of protected equipment is brought to hidden danger.
Present stage SPD has heat protection and two kinds of protective devices of overcurrent protection (internal or external) in use conventionally; thermel protection device is used for protecting the deteriorated heating of lightning protection component; overcurrent protective device is used for preventing the lightning protection component puncture short that transient over-current or overvoltage cause; overcurrent protection is simultaneously as a kind of backup protection mode of heat protection, so can play effective protective action in most of occasions.
But because heat conduction is a relatively slow process; the sensitivity of thermel protection device is low; still can play effective protection for slow temperature-rise period; but for low (in) in pressing system due to the steep temperature rise situation causing under sustained overvoltage state; heat is protected trip gear this process of perception in time and is not moved; cause lightning protection component breakdown; power current enters SPD circuit; in the time that this power current value does not reach the startup value of overcurrent protective device; overcurrent protective device also can not move, thereby causes SPD on fire.
In sum, there is serious protection blind area in protection angle in existing SPD, in this region, and all akinesias of thermel protection device and overcurrent protective device, thus there is serious potential safety hazard.
Summary of the invention
In order effectively to solve the above prior-art problems, the present invention propose a kind of can be easy for installation and the Novel electric surge protector for power-supply system of dependable performance.
The present invention is by the following technical solutions: the present invention is the surge protector for power electronic circuits system, and described surge protector mainly comprises section breaker, current sensor 1, current sensor 2, detects driver element, disjunction actuator, inductance and lightning protection component.Described lightning protection component and section breaker series connection, the current information that detection driver element detects according to described current sensor 1 drives disjunction actuator, drives section breaker action, and SPD is departed from from protection circuit; Current sensor 2 can make iron core in loop produce magnetic force by the current signal sensing, directly drives disjunction actuator to drive section breaker action, and then disjunction SPD path.
Described section breaker, current sensor 1, current sensor 2, detection driver element, disjunction actuator, inductance and lightning protection component, be all arranged in a housing, is an overall Novel electric surge protector.
The invention is characterized in:
1. this Novel electric surge protector has been abandoned the unsteadiness of thermel protection device and the protection blind area of overcurrent protective device;
This Novel electric surge protector by lightning protection component, section breaker, current sensor 1, current sensor 2, detect the integrated and one of driver element, disjunction actuator, inductance, be loaded on housing, can meet the requirement of power consumption equipment to surge protector discharge capacity, response time and three indexs of voltage protection level, strengthen the reliability of equipment;
3. in the time that surge current flows through, detecting driver element and inductance has inhibit feature to fast change pulse, guarantees that disjunction actuator is failure to actuate, the SPD surge current of normally releasing;
4. in the time of lightning protection component inefficacy short circuit, current sensor 2 senses the power current that flows through surge protector, produces magnetic force by the iron core in loop, makes the action of disjunction actuator, disconnects surge protector path;
5. in the time that surge protector leakage current exceedes rated current value, current sensor 1 senses the power frequency leakage current that flows through surge protector, also can make the action of disjunction actuator, disconnects surge protector path.
Accompanying drawing explanation
Fig. 1 is first embodiment of the present invention structural representation.
Fig. 2 is second embodiment of the present invention structural representation.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
As shown in Figure 1, the 1st, section breaker, the 2nd, current sensor 1,3rd, current sensor 2,4th, lightning protection component, the 5th, inductance, the 6th, disjunction actuator, the 7th, detect driver element, the 8th, shell, the 9th, link gear, the 10th, spring.
The present invention is the surge protector for power electronic circuits system, and described surge protector mainly comprises section breaker, current sensor 1, current sensor 2, detects driver element, disjunction actuator, inductance and lightning protection component.
Described current sensor 1 (2) can detect the power frequency leakage current bringing because lightning protection component is deteriorated.In the time that current sensor 1 (2) detects this electric current output current signal, detect driver element (7) and actuating signal can be sent to disjunction actuator (6), drive section breaker (1) to disconnect, thereby SPD is separated with circuit.
Described current sensor 2 (3) can detect because of the lightning protection component power current flowing through that lost efficacy.In the time that current sensor 2 (3) senses this electric current, the iron core in loop, because electromagnet principle produces magnetic force, directly drives disjunction actuator (6) action, and section breaker is opened, and cuts off SPD path.
In the loop of described current sensor 2 (3), string has inductance (5), and it has inhibit feature to fast change pulse, guarantees that disjunction actuator is failure to actuate, lightning protection component (4) surge current of normally releasing.
Described detection driver element (7) can be made up of devices such as resistance, inductance, electric capacity, voltage-stabiliser tube, diode, wiring boards, it can detect the information of current sensor 1 (2) output, drive disjunction actuator (6), thereby make section breaker (1) action.When thunder and lightning surge by time, it has inhibit feature to fast change pulse, guarantees that disjunction actuator is failure to actuate, lightning protection component (4) surge current of normally releasing.
Described disjunction actuator (6) is the principle by electromagnet, when producing magnetic force under the effect of iron core at electric current, thereby make the armature movement of disjunction actuator (5), and drive section breaker (1), the SPD in line disconnection by link gear (9).
Described section breaker (1), after disjunction actuator (6) action, can make circuit disconnect by the pulling force of spring (10).
Claims (9)
1. a Novel electric surge protector, is characterized in that: by lightning protection component, section breaker, current sensor 1, current sensor 2, detect the integrated and one of driver element, disjunction actuator, inductance, be loaded on housing.
2. a kind of Novel electric surge protector according to claim 1, is characterized in that: replace heat protection and overcurrent protection pattern by the pattern of a kind of accessory pathway conduction, control.
3. a kind of Novel electric surge protector according to claim 1, is characterized in that: section breaker and lightning protection component are connected in series.
4. according to the Novel electric surge protector described in claim 1,3 or 4; it is characterized in that: detect the leakage current situation on lightning protection component path by current sensor 1; and conduction is to detecting driver element, detects driver element and sends the action of signal controlling disjunction actuator, pulls open section breaker.
5. according to the Novel electric surge protector described in claim 1,3 or 4, it is characterized in that: detect the power current situation on lightning protection component path by current sensor 2, make the iron core in loop produce magnetic force, directly make the action of disjunction actuator, pull open section breaker.
6. Novel electric surge protector according to claim 1, is characterized in that: detecting driver element can be made up of devices such as resistance, inductance, electric capacity, voltage-stabiliser tube, diode, wiring boards.
7. Novel electric surge protector according to claim 1, is characterized in that: detect driver element and inductance and can suppress surge and passes through, stop the action of disjunction actuator, guarantee that surge normally releases.
8. Novel electric surge protector according to claim 1, is characterized in that: disjunction actuator carries out work by principle and the link gear of electromagnet.
9. Novel electric surge protector according to claim 1, is characterized in that: in shell, embed set screws component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413119.2A CN103779854B (en) | 2012-10-24 | 2012-10-24 | A kind of surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413119.2A CN103779854B (en) | 2012-10-24 | 2012-10-24 | A kind of surge protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103779854A true CN103779854A (en) | 2014-05-07 |
| CN103779854B CN103779854B (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210413119.2A Active CN103779854B (en) | 2012-10-24 | 2012-10-24 | A kind of surge protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN103779854B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016000355A1 (en) * | 2015-09-11 | 2017-03-16 | DEHN + SÖHNE GmbH + Co. KG. | Arrangement for the safe, independent of switchgear or fuses, mains-side separation of overvoltage protection devices in the case of critical operating conditions |
| CN110571775A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | Surge protector with circuit breaking device |
| CN113708336A (en) * | 2020-05-21 | 2021-11-26 | 菲尼克斯电气公司 | Overvoltage protection device |
Citations (8)
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| EP0350477A2 (en) * | 1988-07-06 | 1990-01-10 | Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft | Disconnexion device for surge arresters |
| CN2768192Y (en) * | 2005-01-11 | 2006-03-29 | 浙江德力西电器股份有限公司 | Thermal trip of low-pressure breaker |
| EP1870976A2 (en) * | 2006-06-20 | 2007-12-26 | ABB France | Device for protecting against voltage surges with improved capacity for securing by disconnection and corresponding method |
| CN101102042A (en) * | 2007-08-03 | 2008-01-09 | 中兴通讯股份有限公司 | A protection device for lightning strike surge protection circuit |
| CN101789590A (en) * | 2009-01-22 | 2010-07-28 | 孙巍巍 | Novel surge protective device |
| CN101882544A (en) * | 2010-06-10 | 2010-11-10 | 厦门大恒科技有限公司 | Air switch with functions of delayed releasing and automatic reclosing |
| CN102025141A (en) * | 2009-09-23 | 2011-04-20 | 深圳市槟城电子有限公司 | Anti-surge protection circuit |
| CN202888817U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
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2012
- 2012-10-24 CN CN201210413119.2A patent/CN103779854B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350477A2 (en) * | 1988-07-06 | 1990-01-10 | Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft | Disconnexion device for surge arresters |
| CN2768192Y (en) * | 2005-01-11 | 2006-03-29 | 浙江德力西电器股份有限公司 | Thermal trip of low-pressure breaker |
| EP1870976A2 (en) * | 2006-06-20 | 2007-12-26 | ABB France | Device for protecting against voltage surges with improved capacity for securing by disconnection and corresponding method |
| CN101102042A (en) * | 2007-08-03 | 2008-01-09 | 中兴通讯股份有限公司 | A protection device for lightning strike surge protection circuit |
| CN101789590A (en) * | 2009-01-22 | 2010-07-28 | 孙巍巍 | Novel surge protective device |
| CN102025141A (en) * | 2009-09-23 | 2011-04-20 | 深圳市槟城电子有限公司 | Anti-surge protection circuit |
| CN101882544A (en) * | 2010-06-10 | 2010-11-10 | 厦门大恒科技有限公司 | Air switch with functions of delayed releasing and automatic reclosing |
| CN202888817U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016000355A1 (en) * | 2015-09-11 | 2017-03-16 | DEHN + SÖHNE GmbH + Co. KG. | Arrangement for the safe, independent of switchgear or fuses, mains-side separation of overvoltage protection devices in the case of critical operating conditions |
| CN108028531A (en) * | 2015-09-11 | 2018-05-11 | 德恩及索恩两合股份有限公司 | Device for safely disconnecting an overvoltage protection means on the network side independently of a switchgear or a backup safety device in critical operating states |
| CN108028531B (en) * | 2015-09-11 | 2020-03-20 | 德恩塞两合公司 | Device for safely disconnecting an overvoltage protection means on the network side independently of a switchgear or a backup safety device in critical operating states |
| CN110571775A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | Surge protector with circuit breaking device |
| CN113708336A (en) * | 2020-05-21 | 2021-11-26 | 菲尼克斯电气公司 | Overvoltage protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103779854B (en) | 2017-09-29 |
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