CN204614686U - Electrical apparatus-switching device - Google Patents
Electrical apparatus-switching device Download PDFInfo
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- CN204614686U CN204614686U CN201520325095.4U CN201520325095U CN204614686U CN 204614686 U CN204614686 U CN 204614686U CN 201520325095 U CN201520325095 U CN 201520325095U CN 204614686 U CN204614686 U CN 204614686U
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- switching device
- short
- electrical apparatus
- control assembly
- assembly
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Abstract
The utility model discloses a kind of electrical apparatus-switching device, comprising: short-circuit protection assembly, control assembly and executive module.Short-circuit protection component detection short trouble also carries out short-circuit protection.Control assembly detects curtage parameter, sends control signal, detection failure provide protection to fault according to curtage parameter.Executive module receives the control signal that control assembly sends, and performs connect or breaking operation according to control signal.Electrical apparatus-switching device structure of the present utility model is simple, reliability is high, volume is little, can realize multiple protection and control.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, more particularly, relates to a kind of electrical apparatus-switching device.
Background technology
Be arranged in industrialized technical equipment and be generally used for three-phase alternating-current motor for controlling and connecting big current and high-tension switching device, this switching device is also referred to as motor starter.Switching device as motor starter has following function usually in order to protect motor:
1) motor is connected or disconnected by service requirement.This function is by being called that the standard cell of contactor realizes.Contactor is used for repeating to connect or disconnect operating current according to service requirement.
2) for motor provides short-circuit protection and overload protection.Short-circuit protection and overload protection are generally be integrated in be called in the standard cell of circuit breaker.When there is short circuit or produce overload big current, circuit breaker is by power consumption equipment, and namely motor disconnects from power supply network.
In conventional design, two standard cells, namely contactor and circuit breaker are placed on a common support, then are placed in a public housing.This just makes, and the volume of switching device increases, part increases, apparatus design complicated.More parts and complicated design make the cost increase of switching device, and decline for the bearing capacity of electric current, are not suitable for short circuit or the overload protection of larger current.
Utility model content
The utility model is intended to propose a kind of compact conformation, electrical apparatus-switching device that volume is little.
According to an embodiment of the present utility model, propose a kind of electrical apparatus-switching device, comprising: short-circuit protection assembly, control assembly and executive module.Short-circuit protection component detection short trouble also carries out short-circuit protection.Control assembly detects curtage parameter, sends control signal, detection failure provide protection to fault according to curtage parameter.Executive module receives the control signal that control assembly sends, and performs connect or breaking operation according to control signal.
In one embodiment, short-circuit protection assembly is motor protection switch or circuit breaker.
In one embodiment, control assembly is controller, and the input of its middle controller is realized by instrument transformer.
In one embodiment, the control signal that control assembly sends comprises: normal start stop signal and fault-signal.
In one embodiment, control assembly detects the fault except short trouble.Such as: overload current, overload voltage, Electric Motor Open-phase Situation, motor stall, motor block.
In one embodiment, executive module is contactor.
In one embodiment, executive module divides deenergizing according to fault-signal, and executive module turns on and off circuit according to normal start stop signal.
In one embodiment, short-circuit protection assembly and control assembly series connection, control assembly and executive module series connection.
Electrical apparatus-switching device structure of the present utility model is simple, reliability is high, volume is little, can realize multiple protection and control.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the structural configuration schematic diagram of the electrical apparatus-switching device according to an embodiment of the present utility model.
Fig. 2 discloses the structural representation of the electrical apparatus-switching device according to an embodiment of the present utility model.
Embodiment
The utility model proposes a kind of electrical apparatus-switching device, comprising: short-circuit protection assembly, control assembly and executive module.Short-circuit protection component detection short trouble also carries out short-circuit protection.Control assembly detects curtage parameter, sends control signal, detection failure provide protection to fault according to curtage parameter.Executive module receives the control signal that control assembly sends, and performs connect or breaking operation according to control signal.
Shown in figure 1 and Fig. 2, Fig. 1 and Fig. 2 discloses the structural representation of the electrical apparatus-switching device according to an embodiment of the present utility model.Short-circuit protection assembly 102, control assembly 103 and executive module 104 are placed in a housing 101.Short-circuit protection assembly 102 and control assembly 103 are connected; control assembly 103 and executive module 104 are connected; the setting position of control assembly 103 not special requirement, and in the illustrated embodiment in which, control assembly 103 is arranged between short-circuit protection assembly 102 and executive module 104.
Short-circuit protection assembly 102 can be protection switch or circuit breaker.Short-circuit protection assembly 102 is protected for the short trouble of circuit, and when there is short trouble in circuit, short-circuit protection assembly 102 pairs of circuit carry out short-circuit protection.
Control assembly 103 carries out detection to parameters such as such as curtages and analyzes and judge.In one embodiment, control assembly 103 is controllers, and the input of controller is realized by instrument transformer.One of function of control assembly 103 sends control signal according to curtage parameter, and another function of control assembly 103 is according to curtage parameter detecting fault and provides protection to fault.The control signal that control assembly 103 sends comprises: normal start stop signal and fault-signal.Normal start stop signal is used for carrying out normal frequent to electrical apparatus-switching device.Control assembly 103 can detect other fault type (short trouble is protected by short-circuit protection assembly 102) except short trouble; such as, the fault that control assembly 103 detects includes but not limited to: overload current, overload voltage, Electric Motor Open-phase Situation, motor stall, motor block.
Executive module 104 is contactors.The function of executive module 104 comprises the control signal executable operations according to control assembly 103, and executive module 104 is actuators of control assembly 103.One of function of executive module 104 is that normal start stop signal turns on and off circuit, realizes the normal frequent of controlling electric device.Another function of executive module 104 is that executive module 104 carries out disjunction according to fault-signal to the fault current gone out beyond short trouble according to fault-signal point deenergizing.
Electrical apparatus-switching device structure of the present utility model is simple, reliability is high, volume is little, can realize multiple protection and control.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (8)
1. an electrical apparatus-switching device, is characterized in that, comprising:
Short-circuit protection assembly, short-circuit protection component detection short trouble also carries out short-circuit protection;
Control assembly, control assembly detects curtage parameter, sends control signal, detection failure provide protection to fault according to curtage parameter;
Executive module, receives the control signal that control assembly sends, and performs connect or breaking operation according to control signal.
2. electrical apparatus-switching device as claimed in claim 1, it is characterized in that, described short-circuit protection assembly is motor protection switch or circuit breaker.
3. electrical apparatus-switching device as claimed in claim 1, it is characterized in that, described control assembly is controller.
4. electrical apparatus-switching device as claimed in claim 3, it is characterized in that, the control signal that described control assembly sends comprises: normal start stop signal and fault-signal.
5. electrical apparatus-switching device as claimed in claim 4, is characterized in that, described control assembly detects the fault except short trouble.
6. electrical apparatus-switching device as claimed in claim 3, it is characterized in that, described executive module is contactor.
7. electrical apparatus-switching device as claimed in claim 6, is characterized in that,
Described executive module divides deenergizing according to fault-signal;
Described executive module turns on and off circuit according to normal start stop signal.
8. electrical apparatus-switching device as claimed in claim 1, is characterized in that,
Described short-circuit protection assembly and control assembly series connection;
Described control assembly and executive module series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520325095.4U CN204614686U (en) | 2015-05-19 | 2015-05-19 | Electrical apparatus-switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520325095.4U CN204614686U (en) | 2015-05-19 | 2015-05-19 | Electrical apparatus-switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204614686U true CN204614686U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520325095.4U Active CN204614686U (en) | 2015-05-19 | 2015-05-19 | Electrical apparatus-switching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204614686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845402A (en) * | 2016-06-12 | 2016-08-10 | 国家电网公司 | Variable-impedance transformer |
-
2015
- 2015-05-19 CN CN201520325095.4U patent/CN204614686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845402A (en) * | 2016-06-12 | 2016-08-10 | 国家电网公司 | Variable-impedance transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |