CN201623455U - Three-phase alternating current electric utilization protector - Google Patents
Three-phase alternating current electric utilization protector Download PDFInfo
- Publication number
- CN201623455U CN201623455U CN201020143017XU CN201020143017U CN201623455U CN 201623455 U CN201623455 U CN 201623455U CN 201020143017X U CN201020143017X U CN 201020143017XU CN 201020143017 U CN201020143017 U CN 201020143017U CN 201623455 U CN201623455 U CN 201623455U
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- Prior art keywords
- phase
- protector
- contactor
- alternating current
- switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a three-phase alternating current electric utilization protector. A contact is connected with a switch K. An open-phase protector is connected to a main line between the switch K and the contactor, and is connected with the contactor. The open-phase protector and the contactor are arranged in an insulation outer casing. The utility model has the advantages of simple structure and reasonable design, not only can control the phase failure of large current, but also is convenient to operate, reduces the cost, prevents the electric appliances from burning out during running with open phase, and has reliable working and wide applying range.
Description
Technical field
The utility model relates to a kind of three-phase alternating current power protector, especially a kind of three-phase alternating current power protector that prevents that electrical equipment from burning because of open-phase running.
Background technology
At present, because electrical network self reason or power supply input wires are unreliable, the situation of phase-deficient operation appears in Switching Power Supply sometimes, and phase-deficient operation is difficult for being discovered, and the three-phase alternating current power protector is exactly to be used for the device of protective circuit in this case.At present, known three-phase alternating current power protector generally is made up of current transformer, control circuit, executive circuit and power circuit.It is installed between electrical equipment and the switch; when electrical equipment in use; when causing the variation of phase voltage and electric current because of the phase failure; current transformer will the perception phase-deficient operation the generation of situation; thereby the related switch of control circuit control executive circuit interrupting power circuit reaches the effect of protection electrical equipment.Three-phase alternating current power protector complex structure on the present market, the cost height, reliability is not high, and is to the environmental impact sensitivity, not easy to operate.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, and this protector can not only be controlled the phase failure of big electric current, and easy to operate three-phase alternating current power protector.
In order to achieve the above object, the technical solution adopted in the utility model is: contactor is connected with K switch, and phase failure protector is connected on the main line between K switch and the contactor, and is connected with contactor, and phase failure protector and contactor are loaded in the insulation crust.
The utility model has the advantages that:
Simple in structure, reasonable in design, this protector can not only be controlled the phase failure of big electric current, and easy to operate, can prevent that electrical equipment from burning because of open-phase running, reliable operation, applied range when reducing cost.
Description of drawings
Fig. 1 is the utility model structural representation;
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model contactor 4 is connected with K switch 3, and phase failure protector 1 is connected on the main line between K switch 3 and the contactor 4, and is connected with contactor 4, and phase failure protector 1 and contactor 4 are loaded in the insulation crust 2.
Connect by copper conductor between described phase failure protector 1 and the contactor 4.
Its course of work of brief description:
The utility model is when the needs electrical work; connect K switch 3; when cause the operating state following time of electrical work owing to electrical network self reason or the insecure reason of power supply input wires at open-phase running; because phase failure protector 1 is connected with main line between K switch 3 and the contactor 4; the variation of phase failure voltage is by lead input phase failure protector 1, and phase failure protector 1 control normally closed contactor 4 commutates, and contactor 4 plays the effect of switch; circuit disconnects, thereby avoids burning of electrical equipment.Phase failure protector 1 and contactor 4 are loaded in the insulation crust 2, and be isolated with external environment, avoided the influence of external environment to phase failure protector 1 and contactor 4, also played the protective effect to phase failure protector 1 and contactor 4.
Claims (2)
1. three-phase alternating current power protector; comprise phase failure protector (1), insulation crust (2), K switch (3) and contactor (4); it is characterized in that: contactor (4) is connected with K switch (3); phase failure protector (1) is connected on the main line between K switch (3) and the contactor (4); and be connected with contactor (4), phase failure protector (1) and contactor (4) are loaded in the insulation crust (2).
2. three-phase alternating current power protector according to claim 1 is characterized in that: connect by copper conductor between described phase failure protector (1) and the contactor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020143017XU CN201623455U (en) | 2010-03-29 | 2010-03-29 | Three-phase alternating current electric utilization protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020143017XU CN201623455U (en) | 2010-03-29 | 2010-03-29 | Three-phase alternating current electric utilization protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623455U true CN201623455U (en) | 2010-11-03 |
Family
ID=43026910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020143017XU Expired - Fee Related CN201623455U (en) | 2010-03-29 | 2010-03-29 | Three-phase alternating current electric utilization protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623455U (en) |
-
2010
- 2010-03-29 CN CN201020143017XU patent/CN201623455U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20120329 |