CN205791513U - A kind of protection device being suitable for high power load test - Google Patents
A kind of protection device being suitable for high power load test Download PDFInfo
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- CN205791513U CN205791513U CN201620496551.6U CN201620496551U CN205791513U CN 205791513 U CN205791513 U CN 205791513U CN 201620496551 U CN201620496551 U CN 201620496551U CN 205791513 U CN205791513 U CN 205791513U
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- air pressure
- time relay
- relay
- cooling blower
- equipment
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Abstract
This utility model relates to load testing technical field, especially relate to a kind of protection device being suitable for high power load test, it includes the cooling blower that the protection switch disconnector with equipment is connected, also include air pressure relay, the time relay and output instrument of reporting to the police, the described time relay is in parallel with cooling blower, the normally-closed contact of described air pressure relay is together in series with the time relay and warning device and forms warning output loop, the normally opened contact of described air pressure relay connects the subsequent control loop having equipment, the energy worked by core parts and produce can be taken away continuously, play a very good protection.
Description
Technical field
This utility model relates to load testing technical field, especially relates to a kind of protection device being suitable for high power load test.
Background technology
Power component is generally configured without blast switch protection alarm device at present, and when blower fan breaks down and do not has properly functioning, at this moment equipment is still in work, and the heat now produced cannot be taken away by air blast cooling, then easily cause core parts and burn.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of protection device being suitable for high power load test, can take away the energy worked by core parts and produce continuously, play a very good protection.
This utility model uses following technological means to realize utility model purpose.
A kind of protection device being suitable for high power load test; it includes the cooling blower that the protection switch disconnector with equipment is connected; it also includes air pressure relay, the time relay and warning output instrument; the described time relay is in parallel with cooling blower; the normally-closed contact of described air pressure relay is together in series with the time relay and warning device and forms warning output loop, and the normally opened contact of described air pressure relay connects the subsequent control loop having equipment.
Further, described cooling blower and the time relay arrange a start stop switch having linkage jointly.
Further, action after the described time relay is set to 10s.
This utility model has the beneficial effect that a kind of protection device being suitable for high power load test described in the utility model, can take away the energy worked by core parts and produce continuously, play a very good protection.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Detailed description of the invention
This utility model provides the gum cover of a kind of heatproof insulation protection, is described in detail this utility model below in conjunction with the accompanying drawings.
As it is shown in figure 1, QF1 is the protection switch disconnector of equipment in figure, KA is the time relay, and M is cooling blower, and J0 is air pressure relay, and label 1 is the subsequent control loop of equipment, and label 2 is output instrument of reporting to the police.A kind of protection device being suitable for high power load test described in the utility model; it includes the cooling blower that the protection switch disconnector with equipment is connected; cooling blower uses the axial flow blower being applicable to heat radiation; it also includes air pressure relay, the time relay and warning output instrument; the described time relay is in parallel with cooling blower; the normally-closed contact of described air pressure relay is together in series with the time relay and warning device and forms warning output loop, and the normally opened contact of described air pressure relay connects the subsequent control loop having equipment.Described cooling blower and the time relay arrange a start stop switch having linkage jointly, and after pressing start stop switch, cooling blower and the time relay simultaneously enter work, it is preferred that the described time relay is set to action after 10s.
Equipment normally works after lower cooling blower power on, and blower fan has following two states: one, cooling blower normally works, then the normally-closed contact of air pressure relay disconnects, and makes warning output loop disconnect；The normally opened contact Guan Bi of air pressure relay, the subsequent control loop connection of equipment, equipment normally works；Two, cooling blower does not run or cooling blower blast is not enough, then the normally-closed contact attonity of air pressure relay, then, after the time that elapsed time relay sets, output instrument output alarm signal of reporting to the police is to remind operator's equipment to break down；The normally opened contact of air pressure relay also attonity, the subsequent control loop of equipment is not turned on, then other electrical equipment of equipment also cannot normally work, and core parts are out of service.
Principle of the present utility model is, when cooling blower is connected, the time relay also begins to work simultaneously, and air pressure relay is acted on by blast, and its normally opened contact closes, and normally-closed contact disconnects；Because cooling blower is in time being energized to cooling blower generation enough blast, need one comparatively short period, action after the time relay can be set to 10s here, just can touch warning output loop and report to the police when being typically due to cooling blower fault and deficiency in draught.In sum, this utility model is used for generator test, the test load protection device needing blower fan forced heat radiation that set of cells is aging and the equipment such as charging pile is used, and has higher requirements especially for heat radiation, need to be taken away the core parts of energy by blower fan.
The above is only better embodiment of the present utility model, therefore all equivalence changes done according to structure, feature and the principle described in this utility model patent claim or modification, all it is included in this utility model patent claim.
Claims (3)
1. the protection device being suitable for high power load test; it is characterized in that: it includes the cooling blower that the protection switch disconnector with equipment is connected; it also includes air pressure relay, the time relay and warning output instrument; the described time relay is in parallel with cooling blower; the normally-closed contact of described air pressure relay is together in series with the time relay and warning device and forms warning output loop, and the normally opened contact of described air pressure relay connects the subsequent control loop having equipment.
A kind of protection device being suitable for high power load test the most according to claim 1, it is characterised in that: described cooling blower and the time relay arrange a start stop switch having linkage jointly.
A kind of protection device being suitable for high power load test the most according to claim 2, it is characterised in that: the described time relay is set to action after 10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620496551.6U CN205791513U (en) | 2016-05-27 | 2016-05-27 | A kind of protection device being suitable for high power load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620496551.6U CN205791513U (en) | 2016-05-27 | 2016-05-27 | A kind of protection device being suitable for high power load test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205791513U true CN205791513U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620496551.6U Active CN205791513U (en) | 2016-05-27 | 2016-05-27 | A kind of protection device being suitable for high power load test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205791513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870907A (en) * | 2016-05-27 | 2016-08-17 | 湖南福德电气有限公司 | Protection device applicable to high-power load test |
-
2016
- 2016-05-27 CN CN201620496551.6U patent/CN205791513U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870907A (en) * | 2016-05-27 | 2016-08-17 | 湖南福德电气有限公司 | Protection device applicable to high-power load test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |