CN106953311B - A kind of Current Transformer Secondary over-voltage protector - Google Patents
A kind of Current Transformer Secondary over-voltage protector Download PDFInfo
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- CN106953311B CN106953311B CN201710307134.1A CN201710307134A CN106953311B CN 106953311 B CN106953311 B CN 106953311B CN 201710307134 A CN201710307134 A CN 201710307134A CN 106953311 B CN106953311 B CN 106953311B
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- Prior art keywords
- current transformer
- voltage protector
- transformer secondary
- secondary over
- over
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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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Abstract
The invention discloses a kind of Current Transformer Secondary over-voltage protectors, it is related to electric power electric technical field, Current Transformer Secondary over-voltage protector of the 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 over-voltage protector or the temperature and humidity in environment are more than certain value, fan could operate, timely cool-down dehumidification, it can prevent over-voltage protector aging, it prolongs its service life, and circuit is protected according to the property of diode, make circuit that there is very high safety.
Description
Technical field
The present invention relates to electric power electric technical fields, and in particular to a kind of Current Transformer Secondary over-voltage protector.
Background technique
Over-voltage protector is using the Zinc-oxide piezoresistor original part of high pressure high energy as core, using different encapsulating structures
Manufactured series of products are widely used in the industries such as electric power, power electronics, electrical, electrician, to various power electronic equipments
Surge voltage applies overvoltage protection, has the characteristics that performance is beneficial, stable, easy for installation, it is excessively electric not only to limit atmosphere
Pressure, moreover it is possible to limit the electrical caused switching overvoltage of the switches such as vacuum short circuit, effective solution is because switching overvoltage is to setting
The cumulative damage problem of standby insulation.Existing current transformer (CT) is widely used in electric system, it is ammeter, kilowatt-hour meter
With the essential kit of current control system.When normal work, Current Transformer Secondary overvoltage near short circuit state,
Output voltage is very low.In the case where actual motion, in operation if secondary winding open circuit or first winding flow through it is abnormal electric
Stream, such as lightning current, resonance overcurrent, capacitance charging current, inductance starting current all can generate thousands of volts even in secondary side
It is too drastic and burn to not only result in current transformer, or even jeopardizes the life security of staff for the overvoltage of volts up to ten thousand.
But existing Current Transformer Secondary over-voltage protector, internal electric source module heating amount is big, worked
Continue big calorific value in journey and will lead to resistance value to become larger, so that the temperature rise change rate of power module is steeply risen, Jin Erying
The normal work for having rung Current Transformer Secondary over-voltage protector, therefore, it is necessary to one kind for cooling down Current Transformer Secondary
The device of over-voltage protector.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of Current Transformer Secondary over-voltage protector, it has
Stable working performance, heat dissipation effect are more thorough, also have preferable clearing damp, are that one kind is able to achieve heat discharging operation controllability and removes
The novel current transformer secondary overvoltage protector of wet operability.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of Current Transformer Secondary over-voltage protector, including shell, bus, Temperature and Humidity module, node, ground connection
Round, piezoresistor, the node are connect 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 individual varistors, institute
Varistor one end is stated to connect with the bus, the other end is connected with fan, the fan also with the Temperature and Humidity mould
Block is connected, and the piezoresistor and the Temperature and Humidity module with the fan by connecting after in parallel again, described
3 exhaust outlets are also contained on the surface of shell, and earthing bar mouth is located at the bottom of the Current Transformer Secondary over-voltage protector, institute
It states Current Transformer Secondary over-voltage protector and also contains grounded bracket, make the Current Transformer Secondary over-voltage protector
Bottom is in vacant state.
Preferably, the Current Transformer Secondary over-voltage protector also contains pressure relief device.
Preferably, the shell of the Current Transformer Secondary over-voltage protector is compound by polytetrafluoroethylene (PTFE) and silicon rubber
Obtained insulation crust.
Preferably, it also connects between the Temperature and Humidity module and the fan diode, and two pole
The anode of pipe is connect with the Temperature and Humidity module, and the cathode of the diode is connect with the fan.
Preferably, the node in the Current Transformer Secondary over-voltage protector is at least 4.
Preferably, the exhaust outlet be located at the left side of the Current Transformer Secondary over-voltage protector, right side and
The back side, wherein being protected positioned at the exhaust outlet in left side and the exhaust outlet positioned at right side along the Current Transformer Secondary overvoltage
The center line bilateral symmetry of shield.
Preferably, the earthing bar mouth is copper, aluminum or stainless steel.
Beneficial effects of the present invention: the present invention provides a kind of Current Transformer Secondary over-voltage protector, 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 operate in time, distribute heat caused by varistor work, prevent heat excessively high and lead to piezoresistor aging, prolong
The service life of long piezoresistor；This external fan is also connect with temperature sensor and humidity sensor, when in working environment
When temperature and humidity is excessively high, rheumatism can be transported from turn, play the role of dehumidifying and cooling, in addition, among sensor and fan also
It connects a diode, had both made not will cause short circuit when piezoresistor works or is breakdown, there is circuit very
Good safety, it is mutually indepedent between piezoresistor, after some piezoresistor punch through damage, circuit will not be generated
It influences, safety is good.It is moist that there is Current Transformer Secondary over-voltage protector of the invention good heat dissipation to remove, can be according to electricity
The variation automatic work of road and environment, timely cool-down dehumidification, and there is very high safety, over-voltage protector can be prevented
Aging prolongs its service life.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
The cross section structure schematic diagram of Fig. 1 Current Transformer Secondary over-voltage protector.
The overall structure diagram of Fig. 2 Current Transformer Secondary over-voltage protector.
The module connection diagram of Fig. 3 Current Transformer Secondary over-voltage protector.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment
Referring to Fig.1~Fig. 3, a kind of Current Transformer Secondary over-voltage protector 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 connect with the bus, and Temperature and Humidity module is by temperature sensor
14, humidity sensor 11, signal adapter 12 and digital display 5 form, and the piezoresistor is by 4 individual pressure-sensitive electricity
Resistance is formed in parallel, and described varistor one end is connect with bus, and the other end is connected with fan 4, the fan also with the temperature
Humidity detecting module is connected, diode 13 of also connecting between Temperature and Humidity module and the fan, and two pole
The anode of pipe is connect with the Temperature and Humidity module, and the cathode of the diode connect the piezoresistor with the fan
With the Temperature and Humidity module by connecting again with the fan after parallel connection, on the surface of the shell also containing 3 exhausts
Mouthful, the exhaust outlet is located at left side, right side and the back side of the Current Transformer Secondary over-voltage protector, wherein being located at
The exhaust outlet in left side and the exhaust outlet positioned at right side are left along the center line of the Current Transformer Secondary overvoltage protection
Right symmetrical, stainless steel earthing bar mouth is located at the bottom of the Current Transformer Secondary over-voltage protector；The current transformer
Secondary overvoltage protector also contains grounded bracket, makes the bottom of the Current Transformer Secondary over-voltage protector in hanging shape
State is easy to the heat dissipation of the Current Transformer Secondary over-voltage protector.
To sum up, the embodiment of the present invention has the following beneficial effects: Current Transformer Secondary over-voltage protector of the invention
, can be according to the variation automatic work of circuit and environment, timely cool-down dehumidification with good heat dissipation except moist, and have very high
Safety, over-voltage protector aging can be prevented, prolonged its service life.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the 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
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of Current Transformer Secondary over-voltage protector, it is characterised in that including shell, bus, Temperature and Humidity module,
Node, ground connection round, piezoresistor, the node are connect with the bus, and the Temperature and Humidity module is by temperature sensing
Device, humidity sensor, signal adapter and digital display composition, the piezoresistor by 4 individual varistors simultaneously
Join, described varistor one end is connect with the bus, and the other end is connected with fan, the fan also with it is described warm and humid
Degree detection module is connected, the piezoresistor and the Temperature and Humidity module pass through it is in parallel after again with the fan string
Connection, also contains 3 exhaust outlets on the surface of the shell, and earthing bar mouth is located at the Current Transformer Secondary over-voltage protector
Bottom, the Current Transformer Secondary over-voltage protector also contains grounded bracket, keeps the Current Transformer Secondary excessively electric
The bottom for pressing protector is in vacant state.
2. Current Transformer Secondary over-voltage protector as described in claim 1, which is characterized in that the current transformer two
Secondary over-voltage protector also contains pressure relief device.
3. Current Transformer Secondary over-voltage protector as claimed in claim 2, which is characterized in that the current transformer two
The shell of secondary over-voltage protector is by the compound obtained insulation crust of polytetrafluoroethylene (PTFE) and silicon rubber.
4. Current Transformer Secondary over-voltage protector as described in claim 1, which is characterized in that in the Temperature and Humidity
It also connects between module and the fan diode, and the anode of the diode connects with the Temperature and Humidity module
It connects, the cathode of the diode is connect with the fan.
5. Current Transformer Secondary over-voltage protector as described in claim 1, which is characterized in that the exhaust outlet distinguishes position
In left side, right side and the back side of the Current Transformer Secondary over-voltage protector, wherein be located at left side exhaust outlet with it is described
Positioned at right side exhaust outlet along the Current Transformer Secondary overvoltage protection center line bilateral symmetry.
6. Current Transformer Secondary over-voltage protector as described in claim 1, which is characterized in that the current transformer two
Node in secondary over-voltage protector is at least 4.
7. Current Transformer Secondary over-voltage protector as described in claim 1, which is characterized in that the earthing bar mouth 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 |
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| CN106953311A CN106953311A (en) | 2017-07-14 |
| CN106953311B true CN106953311B (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710307134.1A Active CN106953311B (en) | 2017-04-29 | 2017-04-29 | A kind of Current Transformer Secondary over-voltage protector |
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Families Citing this family (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 |
| 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 |
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 |
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| Publication number | Publication date |
|---|---|
| CN106953311A (en) | 2017-07-14 |
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