CN106953311A - A kind of Current Transformer Secondary overvoltage protection device - Google Patents
A kind of Current Transformer Secondary overvoltage protection device Download PDFInfo
- Publication number
- CN106953311A CN106953311A CN201710307134.1A CN201710307134A CN106953311A CN 106953311 A CN106953311 A CN 106953311A CN 201710307134 A CN201710307134 A CN 201710307134A CN 106953311 A CN106953311 A CN 106953311A
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- CN
- China
- Prior art keywords
- current transformer
- overvoltage protection
- protection device
- transformer secondary
- secondary overvoltage
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of Current Transformer Secondary overvoltage protection device, it is related to electric power electric technical field, the Current Transformer Secondary overvoltage protection device of the present invention includes shell, bus, Temperature and Humidity module, node, it is grounded round, piezoresistor, diode, the Temperature and Humidity module is by temperature sensor, humidity sensor, signal adapter and digital display composition, in the present invention only when the piezoresistor work in overvoltage protection device or the temperature and humidity in environment exceed certain value, fan could be operated, timely cool-down dehumidification, it is prevented from overvoltage protection device aging, extend its service life, and circuit is protected according to the property of diode, make circuit that there is very high security.
Description
Technical field
The present invention relates to electric power electric technical field, and in particular to a kind of Current Transformer Secondary overvoltage protection device.
Background technology
Overvoltage protection device be the Zinc-oxide piezoresistor original paper using high pressure high energy as core, using different encapsulating structures
The series of products being made, are widely used in the industries such as electric power, power electronics, electric, electrician, to various power electronic equipments
Surge voltage apply overvoltage protection, with performance it is beneficial, stably, it is easy for installation the characteristics of, can not only limit air excessively electric
Pressure, moreover it is possible to limit the electric caused switching overvoltage of the switch such as vacuum short circuit, effectively solve because switching overvoltage pair is set
The cumulative damage problem of standby insulation.Existing current transformer (CT) is widely used in power system, and it is ammeter, kilowatt-hour meter
The essential kit with current control system.During normal work, Current Transformer Secondary overvoltage near short circuit state,
Output voltage is very low.In the case of actual motion, if in operation secondary winding open a way, or first winding flow through it is abnormal electric
Stream, such as lightning current, resonance overcurrent, capacitance charging current, inductance starting current all can produce thousands of volts in secondary side even
The overvoltage of volts up to ten thousand, it is too drastic and burn to not only result in current transformer, or even jeopardizes the life security of staff.
But, existing Current Transformer Secondary overvoltage protection device, its internal electric source module heating amount is big, worked
Continuing big caloric value in journey will cause resistance value to become big, so that the temperature rise rate of change of power module steeply rises, Jin Erying
The normal work of Current Transformer Secondary overvoltage protection device is rung, accordingly, it would be desirable to which a kind of be used to cool down Current Transformer Secondary
The device of overvoltage protection device.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of Current Transformer Secondary overvoltage protection device, it has
Stable work in work, radiating effect are more thorough, also with preferable clearing damp, are that one kind can realize heat discharging operation controllability and remove
The novel current transformer secondary overvoltage protector of wet operability.
To realize object above, the present invention is achieved by the following technical programs：
A kind of Current Transformer Secondary overvoltage protection device, including shell, bus, Temperature and Humidity module, node, ground connection
Round, piezoresistor, the node are connected with the bus, and the Temperature and Humidity module is passed by temperature sensor, humidity
Sensor, signal adapter and digital display composition, the piezoresistor are formed in parallel by 4 single piezoresistors,
Described piezo-resistance one end is connected with the bus, and the other end is connected with fan, the fan also with the Temperature and Humidity
Module is connected, the piezoresistor with the detection module by being that the fan is connected after parallel connection, in the shell
Surface also containing 3 exhaust outlets, the earthing bar mouthful is located at the bottom of the Current Transformer Secondary overvoltage protection device, institute
State Current Transformer Secondary overvoltage protection device and also contain grounded bracket, make the Current Transformer Secondary overvoltage protection device
Bottom is in vacant state.
It is preferred that, the Current Transformer Secondary overvoltage protection device also contains pressure relief device.
It is preferred that, the shell of the Current Transformer Secondary overvoltage protection device is combined by polytetrafluoroethylene (PTFE) and silicon rubber
Obtained insulation crust.
It is preferred that, a diode of also being connected between the Temperature and Humidity module and the fan, and two pole
The positive pole of pipe is connected with the Temperature and Humidity module, and the negative pole of the diode is connected with the fan.
It is preferred that, the node in the Current Transformer Secondary overvoltage protection device is at least 4.
It is preferred that, the exhaust outlet respectively positioned at the left side of the Current Transformer Secondary overvoltage protection device, right side and
The back side, wherein the exhaust outlet positioned at left side is protected with the exhaust outlet positioned at right side along the Current Transformer Secondary overvoltage
The center line of shield is symmetrical.
It is preferred that, the ground connection round is copper, aluminum or stainless steel.
Beneficial effects of the present invention：The invention provides a kind of Current Transformer Secondary overvoltage protection device, the present invention will
Fan is connected by being connected in series in one end of piezoresistor, and only when piezoresistor works, fan can just be operated, wind
Fan can be operated in time, distributed the heat produced by piezo-resistance work, prevented that heat is too high and causes piezoresistor aging, prolong
The service life of long piezoresistor；This external fan is also connected with temperature sensor and humidity sensor, when in working environment
When temperature and humidity is too high, rheumatism can transport automatic turn, play a part of dehumidifying and cooling, in addition, in the middle of sensor and fan also
One diode of series connection, had both made, when piezoresistor works or be breakdown, all without short circuit is caused, to make circuit have very
It is separate between good security, piezoresistor, after some piezoresistor punch through damage, circuit will not be produced
Influence, security is good.It is moist that there is the Current Transformer Secondary overvoltage protection device of the present invention good radiating to remove, can be according to electricity
The change of road and environment works automatically, timely cool-down dehumidification, and with very high security, is prevented from overvoltage protection device
Aging, extends its service life.
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
The accompanying drawing to be used needed for having technology description is 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.
The cross section structure schematic diagram of Fig. 1 Current Transformer Secondary overvoltage protection devices.
The overall structure diagram of Fig. 2 Current Transformer Secondary overvoltage protection devices.
The module connection diagram of Fig. 3 Current Transformer Secondary overvoltage protection devices.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.
Embodiment
1~Fig. 3 of reference picture, a kind of Current Transformer Secondary overvoltage protection device of the invention, including shell 1, bus 3,
Temperature and Humidity module, node 6, ground connection round 8, piezoresistor 10, pressure relief device 9, the Current Transformer Secondary are excessively electric
Pressure protector contains node described at least four, and the node is connected with the bus, and Temperature and Humidity module is by temperature sensor
14th, humidity sensor 11, signal adapter 12 and digital display 5 are constituted, and the piezoresistor is by 4 single pressure-sensitive electricity
Resistance device be formed in parallel, described piezo-resistance one end is connected with bus, and the other end is connected with fan 4, the fan also with it is described
Temperature and Humidity module is connected, a diode 13 of also being connected between Temperature and Humidity module and the fan, and described two
The positive pole of pole pipe is connected with the Temperature and Humidity module, and the negative pole of the diode is connected the piezo-resistance with the fan
Device, by being that the fan is connected after parallel connection, also contains 3 exhaust outlets, institute with the detection module on the surface of the shell
Left side, right side and the back side that exhaust outlet is located at the Current Transformer Secondary overvoltage protection device respectively are stated, wherein positioned at left side
Exhaust outlet and the exhaust outlet positioned at right side along center line of the Current Transformer Secondary overvoltage protection or so pair
Claim, the stainless steel earthing bar mouthful is located at the bottom of the Current Transformer Secondary overvoltage protection device；The current transformer
Secondary overvoltage protector also contains grounded bracket, and the bottom for making the Current Transformer Secondary overvoltage protection device is in hanging shape
State, it is easy to the radiating of the Current Transformer Secondary overvoltage protection device.
To sum up, the embodiment of the present invention has the advantages that：The Current Transformer Secondary overvoltage protection device of the present invention
With good radiating except moist, can automatically it be worked according to the change of circuit and environment, timely cool-down dehumidification, and with very high
Security, be prevented from overvoltage protection device aging, extend its service life.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of Current Transformer Secondary overvoltage protection device, it is characterised in that including shell, bus, Temperature and Humidity module,
Node, ground connection round, piezoresistor, the node are connected with the bus, and the Temperature and Humidity module is by TEMP
Device, humidity sensor, signal adapter and digital display composition, the piezoresistor is by 4 single piezoresistors
Be formed in parallel, described piezo-resistance one end is connected with the bus, and the other end is connected with fan, the fan also with the temperature
Humidity detecting module is connected, the piezoresistor with the detection module by being that the fan is connected after parallel connection,
The surface of the shell is also containing 3 exhaust outlets, and the earthing bar mouthful is located at the Current Transformer Secondary overvoltage protection device
Bottom, the Current Transformer Secondary overvoltage protection device also contains grounded bracket, makes the Current Transformer Secondary excessively electric
The bottom for pressing protector is in vacant state.
2. Current Transformer Secondary overvoltage protection device as claimed in claim 1, it is characterised in that the current transformer two
Secondary overvoltage protection device also contains pressure relief device.
3. Current Transformer Secondary overvoltage protection device as claimed in claim 2, it is characterised in that the current transformer two
The shell of secondary overvoltage protection device is by polytetrafluoroethylene (PTFE) and the compound obtained insulation crust of silicon rubber.
4. Current Transformer Secondary overvoltage protection device as claimed in claim 3, it is characterised in that in the Temperature and Humidity
Also connected between module and the fan diode, and the positive pole of the diode connects with the Temperature and Humidity module
Connect, the negative pole of the diode is connected with the fan.
5. Current Transformer Secondary overvoltage protection device as claimed in claim 4, it is characterised in that the exhaust outlet distinguishes position
In left side, right side and the back side of the Current Transformer Secondary overvoltage protection device, wherein positioned at left side exhaust outlet with it is described
Center line of the exhaust outlet along the Current Transformer Secondary overvoltage protection positioned at right side is symmetrical.
6. Current Transformer Secondary overvoltage protection device as claimed in claim 5, it is characterised in that the current transformer two
Node in secondary overvoltage protection device is at least 4.
7. Current Transformer Secondary overvoltage protection device as claimed in claim 6, it is characterised in that the ground connection round is copper
Matter, aluminum or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307134.1A CN106953311B (en) | 2017-04-29 | 2017-04-29 | A kind of Current Transformer Secondary over-voltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307134.1A CN106953311B (en) | 2017-04-29 | 2017-04-29 | A kind of Current Transformer Secondary over-voltage protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106953311A true CN106953311A (en) | 2017-07-14 |
| CN106953311B CN106953311B (en) | 2019-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307134.1A Active CN106953311B (en) | 2017-04-29 | 2017-04-29 | A kind of Current Transformer Secondary over-voltage protector |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022735A (en) * | 2017-12-04 | 2018-05-11 | 成都滕达科技有限公司 | A kind of protective device of electric mutual inductor |
| CN108736460A (en) * | 2018-07-25 | 2018-11-02 | 安徽硕日光电科技有限公司 | A kind of current mutual inductor overvoltage protector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101002073B1 (en) * | 2010-05-18 | 2010-12-17 | 여인식 | Surge protection apparatus |
| CN204167891U (en) * | 2014-08-06 | 2015-02-18 | 深圳市艾尔特通讯技术有限公司 | Large galvanization Surge Protector |
| CN204681067U (en) * | 2015-02-09 | 2015-09-30 | 安徽亚辉电气自动化有限公司 | A kind of Current Transformer Secondary overvoltage protection device |
| CN105514961A (en) * | 2014-09-24 | 2016-04-20 | 天津市永丰泰科技发展有限公司 | Surge protector with temperature detection function |
| CN205195242U (en) * | 2015-12-17 | 2016-04-27 | 毕国辉 | Secondary overvoltage protection device of current transformer |
-
2017
- 2017-04-29 CN CN201710307134.1A patent/CN106953311B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101002073B1 (en) * | 2010-05-18 | 2010-12-17 | 여인식 | Surge protection apparatus |
| CN204167891U (en) * | 2014-08-06 | 2015-02-18 | 深圳市艾尔特通讯技术有限公司 | Large galvanization Surge Protector |
| CN105514961A (en) * | 2014-09-24 | 2016-04-20 | 天津市永丰泰科技发展有限公司 | Surge protector with temperature detection function |
| CN204681067U (en) * | 2015-02-09 | 2015-09-30 | 安徽亚辉电气自动化有限公司 | A kind of Current Transformer Secondary overvoltage protection device |
| CN205195242U (en) * | 2015-12-17 | 2016-04-27 | 毕国辉 | Secondary overvoltage protection device of current transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022735A (en) * | 2017-12-04 | 2018-05-11 | 成都滕达科技有限公司 | A kind of protective device of electric mutual inductor |
| CN108736460A (en) * | 2018-07-25 | 2018-11-02 | 安徽硕日光电科技有限公司 | A kind of current mutual inductor overvoltage protector |
| CN108736460B (en) * | 2018-07-25 | 2023-11-24 | 合肥森岑汽车用品有限公司 | Overvoltage protector for current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106953311B (en) | 2019-04-19 |
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