CN104577986A - Control and protection switch and circuit control method - Google Patents
Control and protection switch and circuit control method Download PDFInfo
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- CN104577986A CN104577986A CN201410804666.2A CN201410804666A CN104577986A CN 104577986 A CN104577986 A CN 104577986A CN 201410804666 A CN201410804666 A CN 201410804666A CN 104577986 A CN104577986 A CN 104577986A
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- control
- current transformer
- switch
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- coil current
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Abstract
The invention discloses a control and protection switch (CPS) and a method for controlling circuits by adopting the control and protection switch, belongs to the technical field of protection switches, and aims to provide a control and protection switch (CPS) which adopts a Rogowski-coil current transformer and a method for controlling and protecting the circuits. The control and protection switch at a current market usually adopts an electromagnetic induction type current transformer (CT) with an iron core, because the electromagnetic induction type current transformer (CT) is provided with an iron core, the phenomenon of magnetic saturation can be generated due to an overlarge electric current when a short circuit occurs, so that an index error is caused accordingly. The control and protection switch disclosed by the invention is low in cost and is light in weight; because the hollow Rogowski-coil current transformer is adopted, the generation of the phenomenon of magnetic saturation can be avoided, so that the reliability and the sensitivity of control and protection switch appliances on the function of short-circuit protection are greatly improved.
Description
Technical field
The present invention relates to protection switch technical field, particularly relate to a kind of method of control and protective switch and control circui.
Background technology
Protection switch is a kind of conventional electric elements, is mainly used in cutting off main circuit when current anomaly increases.
In prior art; be in the Chinese invention patent prospectus of 02127780.X in the patent No.; applicant Japan's Fuji Electric Co., Ltd. discloses a kind of protection switch; it operates an alarm switch when threading off instantaneously; forbid that alarm switch works when the trip control apparatus of such as voltage trip device and so on produces and threads off, thus operate alarm switch safely in dropout process instantaneously, in all scopes of operating current.The plunger transmitting moment tripping mechanism attracts the operation of the operating parts of operation and trip control apparatus, and to the locking piece of switching mechanism, (the dropout part of breech lock recipient is divided into thread off on one part and part of threading off once.Upper dropout part transmits the operation of moment tripping mechanism to breech lock recipient, and operates alarm switch.Lower dropout part transmits the operation of trip control apparatus to breech lock recipient, and therefore, alarm switch is because it can not work independent of the operation of trip control apparatus.
But, the control and protective switch in above-mentioned patent, employing be that there is induction current transformer (CT) unshakable in one's determination, the shortcomings such as there is easy magnetic saturation, current measuring range is narrow, and precision is low, and volume is large, and production cost is high.
Summary of the invention
Technical problem to be solved by this invention is the method providing one can have employed Luo-coil current transformer for the above-mentioned state of the art to replace the control and protective switch of induction current transformer (CT) and adopt this control and protective switch to control circuit.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
Plant control and protective switch, be applicable to the rated operational voltage of 220V or 380V, this control and protective switch includes a box-like Switch main body, described Switch main body includes the plastic casing of an inside with container cavity, described plastic casing is provided with rotary switch, and be formed with the swing handle of a protrusion on rotary switch, described swing handle extends in described container cavity;
In described container cavity, be provided with an integrated chip, described integrated chip one side is provided with intelligent controller, and another side is provided with transformer, wherein,
In described container cavity, be also provided with three groups of Luo-coil current transformers, described Luo-coil current transformer one end is connected with integrated chip with described transformer, and the other end extends in outside described plastic casing.
As improvement of the present invention, described Switch main body collection has disconnecting mechanism, contactor mechanism, operating mechanism, release mechanism, intelligent controller and Luo-coil current transformer, described disconnecting mechanism is coupled by wire and contactor, described contactor and intelligent controller couple, and described intelligent controller and described Luo-coil current transformer couple.
The invention also discloses a kind of method adopting above-mentioned control and protective switch to carry out control circui, include following steps:
1), by motor and described control and protective switching device (CPS) connected by punching Luo-coil current transformer, receive monitoring motor operating state by described control and protective switch;
2) described control and protective switch is given when Luo-coil current transformer senses motor operation exception by abnormal signal; make to be increased by the current anomaly of current transformer; logical operation and judgement is carried out again by intelligent controller; again trip signal is transmitted release mechanism, drive disconnecting mechanism to cut off main circuit by described release mechanism.
Compared with prior art; the invention has the advantages that: what the control and protective switch on existing market adopted usually is have induction current transformer (CT) unshakable in one's determination; this induction current transformer is owing to having iron core; because produce magnetic saturation phenomenon when electric current is excessive, and then index generation error can be caused when being short-circuited.Control and protective switch cost of the present invention is low; quality is light; and owing to have employed hollow Luo-coil current transformer, make it can avoid the generation of magnetic saturation phenomenon, greatly improve the reliability of control and protective switching device on short-circuit protection function and sensitivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of control and protective switch in the embodiment of the present invention;
Fig. 2 is the vertical view of middle control and protective switch embodiment illustrated in fig. 1;
Fig. 3 is the end view of control and protective switch in Fig. 1 embodiment.
Reference numeral:
1, Switch main body; 2, plastic casing; 21, container cavity; 3, rotary switch; 31, swing handle; 4, integrated chip; 5, intelligent controller; 6, transformer; 7, Luo-coil.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Figure 1-Figure 3, the present embodiment is a kind of control and protective switch, be applicable to the rated operational voltage of 220V or 380V, include a box-like Switch main body 1, described Switch main body includes the plastic casing 2 of an inside with container cavity 21, described plastic casing is provided with rotary switch 3, and described rotary switch is formed with the swing handle 31 of a protrusion, described swing handle extends in described container cavity;
An integrated chip 4 is provided with in described container cavity, described integrated chip one side is provided with intelligent controller 5, another side is provided with transformer 6, wherein, three groups of Luo-coil current transformers 7 are also provided with in described container cavity, described Luo-coil current transformer one end is connected with integrated chip with described transformer, and the other end extends in outside described plastic casing.
Disconnecting mechanism, contactor mechanism, release mechanism, intelligent controller and Luo-coil current transformer is provided with in described intelligent controller, described disconnecting mechanism is coupled by wire and contactor, described contactor couples with control controller, and described intelligent controller and described current transformer couple.
Adopt above-mentioned control and protective switch to carry out the method for control circui, include following steps:
1), by motor and described control and protective switching device (CPS) connected by punching Luo-coil current transformer, receive monitoring motor operating state by described control and protective switch;
2) described control and protective switch is given when Luo-coil current transformer senses motor operation exception by abnormal signal; make to be increased by the current anomaly of current transformer; logical operation and judgement is carried out again by intelligent controller; again trip signal is transmitted release mechanism, drive disconnecting mechanism to cut off main circuit by described release mechanism.
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a control and protective switch, be applicable to the rated operational voltage of 220V or 380V, this control and protective switch includes a box-like Switch main body, described Switch main body includes the plastic casing of an inside with container cavity, described plastic casing is provided with rotary switch, and be formed with the swing handle of a protrusion on rotary switch, described swing handle extends in described container cavity;
In described container cavity, be provided with an integrated chip, described integrated chip one side is provided with intelligent controller, and another side is provided with transformer, it is characterized in that:
In described container cavity, be also provided with three groups of Luo-coil current transformers, described Luo-coil current transformer one end is connected with integrated chip with described transformer, and the other end extends in outside described plastic casing.
2. control and protective switch according to claim 1; it is characterized in that: described Switch main body collection has disconnecting mechanism, contactor mechanism, operating mechanism, release mechanism, intelligent controller and Luo-coil current transformer; described disconnecting mechanism is coupled by wire and contactor; described contactor and intelligent controller couple, and described intelligent controller and described Luo-coil current transformer couple.
3. adopt control and protective switch as claimed in claim 1 to carry out a method for control circui, include following steps:
1), by motor and described control and protective switching device (CPS) connected by punching Luo-coil current transformer, receive monitoring motor operating state by described control and protective switch;
2) described control and protective switch is given when Luo-coil current transformer senses motor operation exception by abnormal signal; make to be increased by the current anomaly of current transformer; logical operation and judgement is carried out again by intelligent controller; again trip signal is transmitted release mechanism, drive disconnecting mechanism to cut off main circuit by described release mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804666.2A CN104577986A (en) | 2014-12-13 | 2014-12-13 | Control and protection switch and circuit control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410804666.2A CN104577986A (en) | 2014-12-13 | 2014-12-13 | Control and protection switch and circuit control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104577986A true CN104577986A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410804666.2A Pending CN104577986A (en) | 2014-12-13 | 2014-12-13 | Control and protection switch and circuit control method |
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| CN (1) | CN104577986A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487547A (en) * | 2002-06-25 | 2004-04-07 | 施耐德电器工业公司 | Electromagnetic protection and control assembly |
| CN1988098A (en) * | 2006-07-03 | 2007-06-27 | 浙江中凯电器有限公司 | Controller for digital control and protective switch appliance |
| CN101923988A (en) * | 2009-11-24 | 2010-12-22 | 浙江中凯科技股份有限公司 | Modular multifunctional electrical appliance |
| US20110310521A1 (en) * | 2008-07-02 | 2011-12-22 | Eaton Industries Gmbh | Electric protective switch device having control electronics |
| CN102401855A (en) * | 2011-11-22 | 2012-04-04 | 李云宏 | Electric digital instrument using Rogowski coil current transformer |
| CN102998517A (en) * | 2012-12-17 | 2013-03-27 | 浙江中凯科技股份有限公司 | Hall current detection device |
-
2014
- 2014-12-13 CN CN201410804666.2A patent/CN104577986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487547A (en) * | 2002-06-25 | 2004-04-07 | 施耐德电器工业公司 | Electromagnetic protection and control assembly |
| CN1988098A (en) * | 2006-07-03 | 2007-06-27 | 浙江中凯电器有限公司 | Controller for digital control and protective switch appliance |
| US20110310521A1 (en) * | 2008-07-02 | 2011-12-22 | Eaton Industries Gmbh | Electric protective switch device having control electronics |
| CN101923988A (en) * | 2009-11-24 | 2010-12-22 | 浙江中凯科技股份有限公司 | Modular multifunctional electrical appliance |
| CN102401855A (en) * | 2011-11-22 | 2012-04-04 | 李云宏 | Electric digital instrument using Rogowski coil current transformer |
| CN102998517A (en) * | 2012-12-17 | 2013-03-27 | 浙江中凯科技股份有限公司 | Hall current detection device |
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Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |