CN203167513U - Novel digital current transformer secondary overvoltage protection device - Google Patents
Novel digital current transformer secondary overvoltage protection device Download PDFInfo
- Publication number
- CN203167513U CN203167513U CN 201320159087 CN201320159087U CN203167513U CN 203167513 U CN203167513 U CN 203167513U CN 201320159087 CN201320159087 CN 201320159087 CN 201320159087 U CN201320159087 U CN 201320159087U CN 203167513 U CN203167513 U CN 203167513U
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- shell
- current transformer
- protection device
- overvoltage protection
- transformer secondary
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Abstract
The utility model discloses a novel digital current transformer secondary overvoltage protection device which comprises a shell which is provided with a wiring terminal. The shell is internally provided with a data calculation control panel and a power supply module. The outer side of the power supply module is also provided with miniature fans. The periphery of the shell is provided with a plurality of heat dissipation holes. Compared with the prior art, the novel digital current transformer secondary overvoltage protection device has the following advantages that since two miniature fans are added next to the internal power supply module, the heat dissipation of the power supply module with large heat productivity in a working process is realized well. At the same time, the periphery of the shell is provided with the plurality of heat dissipation holes, thus the heat in the shell can be dissipated rapidly, the convection of air flow in the shell is achieved, and a good channel is provided for a cooling effect. So the normal working of the novel digital current transformer secondary overvoltage protection device is ensured well.
Description
Technical field
The utility model relates to field of power, in particular a kind of new digital formula Current Transformer Secondary overvoltage protection device.
Background technology
In electric power system, in electric power system, current transformer (CT) is the little electric current that big electric current is become regulation, is widely used in one-shot measurement, control and protection.It is the requisite kit of ammeter, kilowatt-hour meter and current control system.During the current transformer operate as normal, secondary side is in approximate short-circuit condition, output voltage is very low, if but the secondary winding open circuit that is in operation, or a winding flows through abnormal current, as lightning current, resonance overcurrent, electric capacity charging current, inductance starting current, a load short circuit current etc., will produce the overvoltage of thousands of volts even volts up to ten thousand at secondary side, not only insulation works the mischief to electrical secondary system for this, also can make the too drastic and scaling loss of current transformer, even the life security that jeopardizes the staff.Therefore need to adopt the Current Transformer Secondary overvoltage protection device to prevent the superpotential generation of current transformer in the electric power system.The existing Current Transformer Secondary overvoltage protection device that uses; its internal electric source module caloric value is big; continuing big caloric value in the course of the work will cause resistance value to become big; thereby the temperature rise rate of change of power module is sharply risen, and then influenced the operate as normal of Current Transformer Secondary overvoltage protection device.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of thermal diffusivity is good, the new digital formula Current Transformer Secondary overvoltage protection device of stable work in work.
The utility model is achieved through the following technical solutions:
A kind of new digital formula Current Transformer Secondary overvoltage protection device; comprise shell, described shell is provided with binding post, is provided with data computation control board and power module in the described shell; the described power module outside also is provided with mini-fan, is provided with a plurality of louvres around the described shell.
Described mini-fan has 2.
Described louvre is strip.
The utility model has the following advantages compared to existing technology:
The new digital formula Current Transformer Secondary overvoltage protection device that the utility model provides because portion's power module next door has increased by 2 mini-fans, makes the big power module of caloric value can well realize heat radiation within it in the course of the work.Simultaneously, the utility model has a plurality of louvres around shell, and the heat in the shell can be scattered rapidly, and the enclosure air-flow can form convection current, for radiating effect provides good passage.Thereby well guaranteed the operate as normal of new digital formula Current Transformer Secondary overvoltage protection device.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Referring to Fig. 1; the new digital formula Current Transformer Secondary overvoltage protection device that the utility model provides; comprise shell 1; shell 1 is provided with binding post 2; have the louvre 3 of a plurality of strips around the shell 1; be provided with data computation control board and power module in the shell 1, the power module outside also is provided with 2 mini-fans (scheming not shown).By 2 mini-fans the big power module of caloric value is dispelled the heat, and in time discharge heat by the louvre 3 around the shell 1, thereby guaranteed the operate as normal of new digital formula Current Transformer Secondary overvoltage protection device.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. new digital formula Current Transformer Secondary overvoltage protection device; comprise shell; described shell is provided with binding post; be provided with data computation control board and power module in the described shell; it is characterized in that: the described power module outside also is provided with mini-fan, is provided with a plurality of louvres around the described shell.
2. new digital formula Current Transformer Secondary overvoltage protection device as claimed in claim 1, it is characterized in that: described mini-fan has 2.
3. new digital formula Current Transformer Secondary overvoltage protection device as claimed in claim 2, it is characterized in that: described louvre is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159087 CN203167513U (en) | 2013-04-01 | 2013-04-01 | Novel digital current transformer secondary overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159087 CN203167513U (en) | 2013-04-01 | 2013-04-01 | Novel digital current transformer secondary overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203167513U true CN203167513U (en) | 2013-08-28 |
Family
ID=49028660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159087 Expired - Fee Related CN203167513U (en) | 2013-04-01 | 2013-04-01 | Novel digital current transformer secondary overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203167513U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080316A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | Wind cooling device of secondary over-voltage protector of intermittent current transformer |
| CN104104053A (en) * | 2014-06-12 | 2014-10-15 | 安徽三和电力技术有限公司 | Cooling device for secondary over-voltage protector of current transformer |
| CN104113036A (en) * | 2014-06-11 | 2014-10-22 | 安徽三和电力技术有限公司 | Cooling apparatus for current transformer secondary overvoltage protection device |
| CN106332532A (en) * | 2016-11-22 | 2017-01-11 | 佛山电力设计院有限公司 | Temperature-adjustable shell of current transformer used for power distribution network low-voltage electric cabinet |
-
2013
- 2013-04-01 CN CN 201320159087 patent/CN203167513U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113036A (en) * | 2014-06-11 | 2014-10-22 | 安徽三和电力技术有限公司 | Cooling apparatus for current transformer secondary overvoltage protection device |
| CN104080316A (en) * | 2014-06-12 | 2014-10-01 | 安徽三和电力技术有限公司 | Wind cooling device of secondary over-voltage protector of intermittent current transformer |
| CN104104053A (en) * | 2014-06-12 | 2014-10-15 | 安徽三和电力技术有限公司 | Cooling device for secondary over-voltage protector of current transformer |
| CN106332532A (en) * | 2016-11-22 | 2017-01-11 | 佛山电力设计院有限公司 | Temperature-adjustable shell of current transformer used for power distribution network low-voltage electric cabinet |
| CN106332532B (en) * | 2016-11-22 | 2018-11-02 | 佛山电力设计院有限公司 | A kind of temperature controllable shell of current transformer for power distribution network low pressure electric cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20160401 |