CN209217699U

CN209217699U - A kind of A.C. contactor from carrying coil short protection

Info

Publication number: CN209217699U
Application number: CN201920077343.6U
Authority: CN
Inventors: 张年宝; 张磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2019-08-06
Anticipated expiration: 2029-01-17

Abstract

The utility model discloses a kind of from the A.C. contactor for carrying coil short protection, it is related to Protection Technology for Motors field, including threephase motor, first breaker, second breaker, first button switch, second button switch and A.C. contactor, the C phase of three phase mains is sequentially connected in series the first breaker, the coil of A.C. contactor, second button switch, in the A phase of first button switch and the second breaker access three phase mains, the auxiliary contact of second button switch parallel connection A.C. contactor, the utility model circuit connection is simple, the electric wire connected on each A.C. contactor is less, electric wire can be saved, make the wiring in cabinet more succinct cheer and bright simultaneously, in the maintenance work in later period, it is conveniently replaceable electric wire or component, it avoids generating maloperation, production is not interfered with, meet industry mark simultaneously Standard, low manufacture cost are suitble to enterprise to promote and use, and electrician is also allowed to be easier use and receiving.

Description

A kind of A.C. contactor from carrying coil short protection

Technical field

The utility model relates to Protection Technology for Motors fields, particularly relate to a kind of from the exchange for carrying coil short protection Contactor.

Background technique

For a long time, people are the protectors for being used as the secondary line of A.C. contactor with fuse, due to electrical Often there are many A.C. contactors in switchgear, and there is very big difference in the size of fuse and A.C. contactor, so It needs to need to fix more fuses in the loop, in switchgear by more fuse connections.Use the feelings for arriving more fuses Under condition, the wiring of secondary line can be very intricate in switchgear, causes to be routed in disorder, ordinary maintenance or replacement in switchgear When the components such as button switch, indicator light, often because of complicated installation scenarios, the line of required adjustment can not find Road, also can not find connection it is each surrender device to two fuses being applied to, if maloperation, wrong has occurred in period Route or wrong fuse will close electronic chance error, subsequent to need rewiring, influence manufacturing schedule, without Turn off the serious accident that the direct charged for replacement of fuse is likely to result in electrician's electric shock again.

Utility model content

In view of this, the purpose of this utility model is that propose it is a kind of from carry coil short protection A.C. contactor and Protector.

It is provided by the utility model a kind of from the A.C. contactor for carrying coil short protection, including three based on above-mentioned purpose Phase motor, the first breaker, the second breaker, the first button switch, the second button switch and A.C. contactor, three phase mains C phase be sequentially connected in series first breaker, the coil of the A.C. contactor, second button switch, described first by In the A phase of button switch and second breaker access three phase mains, the auxiliary of the second button switch parallel connection A.C. contactor is touched Point.

Optionally, the auxiliary contact of the A.C. contactor are secondary normally opened contact.

Optionally, first breaker be DZ47-60C10A model or DZ47-60C18A model breaker, it is described Second breaker is also DZ47-60C10A model or DZ47-60C18A model breaker.

Optionally, A, B, C three-phase of the three phase mains are respectively through the first knife switch, the second knife switch and third lock Knife-like switch accesses in the main contacts of the A.C. contactor, and the leading-out terminal of A.C. contactor accesses the threephase motor.

Optionally, A, B, C three-phase of the three phase mains access the main contacts of the A.C. contactor by threephase switch In, the leading-out terminal of A.C. contactor accesses the threephase motor.

Optionally, in the main touching of first knife switch, the second knife switch, third knife switch and A.C. contactor Access first breaker, the second breaker between point, or the main contacts of the threephase switch and A.C. contactor it Between access first breaker, the second breaker.

Optionally, including threephase motor, the second breaker, the first button switch, the second button switch and ac contactor Device, the A phase of three phase mains are sequentially connected in series second breaker, the first button switch, the second button switch and A.C. contactor Coil access zero curve N phase in, the auxiliary contact of the second button switch parallel connection A.C. contactor, the auxiliary of the A.C. contactor Contact is secondary normally opened contact.

Optionally, A, B, C three-phase of the three phase mains are respectively through the first knife switch, the second knife switch and third lock Knife-like switch accesses in the main contacts of the A.C. contactor, and the leading-out terminal of A.C. contactor accesses the threephase motor, in institute It states and accesses described second between the first knife switch, the second knife switch, third knife switch and the main contacts of A.C. contactor Breaker.

Optionally, A, B, C three-phase of the three phase mains access the main contacts of the A.C. contactor by threephase switch In, the leading-out terminal of A.C. contactor accesses the threephase motor, the main contacts of the threephase switch and A.C. contactor it Between access second breaker.

From the above it can be seen that provided by the utility model a kind of from the A.C. contactor for carrying coil short protection Circuit connection is simple, and each A.C. contactor installs two breakers from carrying, and the electric wire connected on A.C. contactor is more It is few, electric wire can be saved, while making the wiring in cabinet more succinct cheer and bright, in the maintenance work in later period In, it is conveniently replaceable electric wire or component, avoids generating maloperation, does not interfere with production, while meeting professional standard, make It is at low cost, it is suitble to enterprise to promote and use, electrician is also allowed to be easier use and receiving.

Detailed description of the invention

Fig. 1 is the circuit diagram for passing through 380V voltage in the utility model embodiment；

Fig. 2 is the circuit diagram for passing through 220V voltage in the utility model embodiment.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and Referring to attached drawing, the utility model is further described.

It should be noted that all statements for using " first " and " second " are for area in the utility model embodiment Be divided to two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience, It should not be construed as the restriction to the utility model embodiment, subsequent embodiment no longer illustrates this one by one.

As one embodiment of the utility model, the utility model provides a kind of from the exchange for carrying coil short protection Contactor, including threephase motor M, the first circuit breaker Q F1, the second circuit breaker Q F2, the first button switch SB1, the second button are opened SB2 and A.C. contactor KM is closed, the C phase of three phase mains is sequentially connected in series the first circuit breaker Q F1, the A.C. contactor KM Coil, the second button switch SB2, the first button switch SB2 and the second circuit breaker Q F2 access three phase mains In A phase, the auxiliary contact of the second button switch SB2 parallel connection A.C. contactor KM.

It is provided by the utility model a kind of simple from the A.C. contactor circuit connection for carrying coil short protection, each A.C. contactor installs two breakers from carrying, and the electric wire connected on A.C. contactor is less, can save electric wire, simultaneously So that the wiring in cabinet is more succinct cheer and bright, in the maintenance work in later period, it is conveniently replaceable electric wire or member Device, avoids generating maloperation, does not interfere with production, while meeting professional standard, and low manufacture cost is suitble to enterprise to promote simultaneously It uses, electrician is also allowed to be easier use and receiving.

The utility model is illustrated below with reference to preferred embodiment.

Referring to Fig. 1, such circuit is passed through 380V voltage condition for A.C. contactor KM, including threephase motor M, the One circuit breaker Q F1, the second circuit breaker Q F2, the first button switch SB1, the second button switch SB2 and A.C. contactor KM.Three-phase A, B, C three-phase of power supply access the friendship through the first knife switch K1, the second knife switch K2 and third knife switch K3 respectively In the main contacts for flowing contactor KM, the leading-out terminal of A.C. contactor KM accesses the threephase motor M, here it is possible to not use Three knife switches directly choose a threephase switch QS, i.e. A, B, C three-phase of three phase mains passes through threephase switch QS (in figure not Show) it accesses in the main contacts of the A.C. contactor KM, the leading-out terminal of A.C. contactor KM accesses the threephase motor M. The C phase of the three phase mains be sequentially connected in series the first circuit breaker Q F1, the coil of the A.C. contactor KM, described second by In the A phase of button switch SB2, the first button switch SB1 and the second circuit breaker Q F2 access three phase mains, the second button The auxiliary contact of switch SB2 parallel connection A.C. contactor KM, the auxiliary contact of the A.C. contactor KM are secondary normally opened contact, this reality The first button switch SB1 in novel is used to be used as and start switch as shutdown switch, the second button switch SB2.Wherein, the first open circuit The model DZ47-60C10A or DZ47-60C18A of device QF1, the model of the second circuit breaker Q F2 is also DZ47- 60C10A or DZ47-60C18A, rated current 40A A.C. contactor below choose DZ47-60C10A model breaker, volume The A.C. contactor of constant current 40A (containing 40A) or more chooses DZ47-60C18A model breaker.

The working principle of the utility model are as follows: close each corresponding first knife switch of three phase mains A, B, C three-phase K1, the second knife switch Q2 and third knife switch Q3 or threephase switch QS, then close two the first breakers of breaker QF1 and the second circuit breaker Q F2.The second button switch SB2 is pressed, in this case, the coil both ends of A.C. contactor KM are powered, is handed over The main contacts for flowing contactor KM, which is powered, to be attracted, and the secondary normally opened contact of A.C. contactor KM can be also attracted therewith, realize ac contactor The coil of device KM is self-locking, and threephase motor M is worked normally；The first button switch SB1 is pressed, in this case, A.C. contactor KM The power-off of coil both ends, the main contacts of A.C. contactor KM disconnects, and the secondary normally opened contact of A.C. contactor KM can also disconnect therewith, Threephase motor M stops working.

Referring to Fig. 2, such circuit is passed through 220V voltage condition for A.C. contactor KM, including threephase motor M, the Two circuit breaker Q F2, the first button switch SB1, the second button switch SB2 and A.C. contactor KM.A, B, C three-phase of three phase mains The main touching of the A.C. contactor KM is accessed through the first knife switch K1, the second knife switch K2 and third knife switch K3 respectively In point, the leading-out terminal of A.C. contactor KM accesses the threephase motor M, here it is possible to which it is direct not use three knife switches A threephase switch QS is chosen, i.e. A, B, C three-phase of three phase mains accesses the friendship by threephase switch QS (not shown) In the main contacts for flowing contactor KM, the leading-out terminal of A.C. contactor KM accesses the threephase motor M.It is opened in first plug-in strip It closes and accesses second open circuit between K1, the second knife switch K2, third knife switch K3 and the main contacts of A.C. contactor KM Device QF2, the A phase of the three phase mains are sequentially connected in series the second circuit breaker Q F2, the first button switch SB1, the second button switch The coil of SB2 and A.C. contactor KM access in zero curve N phase, and the auxiliary of the second button switch SB2 parallel connection A.C. contactor KM is touched Point, the auxiliary contact of the A.C. contactor KM are secondary normally opened contact, and the first button switch SB1 is as stopping in the utility model Switch, the second button switch SB2 are used as and start switch.Wherein, the model DZ47-60C10A of the first circuit breaker Q F1 or DZ47-60C18A, the model of the second circuit breaker Q F2 are also DZ47-60C10A or DZ47-60C18A, rated current 40A A.C. contactor below chooses DZ47-60C10A model breaker, the A.C. contactor of rated current 40A (containing 40A) or more Choose DZ47-60C18A model breaker.

The working principle of the utility model are as follows: close each corresponding first knife switch of three phase mains A, B, C three-phase K1, the second knife switch Q2 and third knife switch Q3 or threephase switch QS, then close the second circuit breaker Q F2.Press Two button switch SB2, in this case, the coil both ends of A.C. contactor KM are powered, the main contacts of A.C. contactor KM, which is powered, to be inhaled It closes, the secondary normally opened contact of A.C. contactor KM can be also attracted therewith, realize that the coil of A.C. contactor KM is self-locking, threephase motor M is worked normally；The first button switch SB1 is pressed, in this case, the coil both ends of A.C. contactor KM power off, A.C. contactor The main contacts of KM disconnects, and the secondary normally opened contact of A.C. contactor KM can also disconnect therewith, and threephase motor M stops working.

The utility model integrally can be made a device, by two breaker the first circuit breaker Q F1 and the second breaker QF2 is linked together with A.C. contactor KM, two sides of A.C. contactor KM can be built with guide groove iron be linked together or The two sides A.C. contactor KM are fixedly connected with guide groove ear, buckle etc., and breaker is inserted into guide groove ear or is inserted into buckle i.e. It can.A.C. contactor KM is realized from the function of carrying coil short protection.

For example, in the case that A.C. contactor KM is passed through 380V voltage, use to two breaker the first circuit breaker Q F1 and Second circuit breaker Q F2, the first circuit breaker Q F1 and the second circuit breaker Q F2 and A.C. contactor KM is linked together, rated current 40A It can be linked together with guide groove iron between A.C. contactor KM below and the first circuit breaker Q F1 and the second circuit breaker Q F2, specified electricity The A.C. contactor KM of stream 40A (containing 40A) or more then can respectively be fixedly connected with a guide groove ear in the two sides A.C. contactor KM Perhaps breaker is inserted into guide groove ear or is inserted into buckle by a buckle.

In the case that A.C. contactor KM is passed through 220V voltage, use to the second circuit breaker Q of breaker F2, second is disconnected Device QF2 and A.C. contactor KM are linked together on road, rated current 40A A.C. contactor KM below and the second circuit breaker Q F2 it Between can be linked together with guide groove iron, the A.C. contactor KM of rated current 40A (contain 40A) or more then can be in A.C. contactor KM One side is fixedly connected with a guide groove ear, and perhaps breaker is inserted into guide groove ear or is inserted into buckle by buckle.

In conclusion each A.C. contactor carries peace certainly the utility model has the following beneficial effects: circuit connection is simple Two breakers are loaded onto, the electric wire connected on A.C. contactor is less, can save electric wire, while making in cabinet Wiring is more succinct cheer and bright, in the maintenance work in later period, is conveniently replaceable electric wire or component, avoids generating and accidentally grasp Make, do not interfere with production, while meeting professional standard, low manufacture cost is suitble to enterprise to promote and use, also electrician is allowed more to hold Easy use and receiving.

It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the utility model, the above reality Applying can also be combined between the technical characteristic in example or different embodiments, and step can be realized with random order, and be deposited In many other variations of the different aspect of the utility model as described above, for simplicity, they are not provided in details.

In addition, to simplify explanation and discussing, and in order not to which the utility model indigestion can be made, in provided attached drawing In can show or can not show and connect with the well known power ground of integrated circuit (IC) chip and other components.In addition, Device can be shown in block diagram form, to avoid making the utility model indigestion, and this has also contemplated following facts, Details i.e. about the embodiment of these block diagram arrangements be height depend on will implement the utility model platform (that is, These details should be completely within the scope of the understanding of those skilled in the art).Elaborate detail (for example, circuit) with In the case where the exemplary embodiment for describing the utility model, it will be apparent to those skilled in the art that can be Without implementing the utility model in the case where these details or in the case that these details change.Therefore, this A little descriptions should be considered as illustrative rather than restrictive.

Although having been incorporated with specific embodiment of the utility model the utility model is described, before The description in face, many replacements of these embodiments, modifications and variations will be apparent for those of ordinary skills 's.

The embodiments of the present invention are intended to cover fall into all such within the broad range of appended claims Replacement, modifications and variations.Therefore, within the spirit and principle of the utility model, any omission for being made, modification, equivalent Replacement, improvement etc., should be included within the scope of protection of this utility model.

Claims

1. a kind of from the A.C. contactor for carrying coil short protection, which is characterized in that including threephase motor, the first open circuit Device, the second breaker, the first button switch, the second button switch and A.C. contactor, the C phase of three phase mains are sequentially connected in series described First breaker, the coil of the A.C. contactor, second button switch, first button switch and described second are broken Road device accesses in the A phase of three phase mains, the auxiliary contact of the second button switch parallel connection A.C. contactor.

2. according to claim 1 from the A.C. contactor for carrying coil short protection, which is characterized in that the exchange connects The auxiliary contact of tentaculum are secondary normally opened contact.

3. according to claim 1 from the A.C. contactor for carrying coil short protection, which is characterized in that the three-phase electricity A, B, C three-phase in source access the A.C. contactor through the first knife switch, the second knife switch and third knife switch respectively Main contacts in, the leading-out terminal of A.C. contactor accesses the threephase motor.

4. according to claim 3 from the A.C. contactor for carrying coil short protection, which is characterized in that the three-phase electricity A, B, C three-phase in source access in the main contacts of the A.C. contactor by threephase switch, the leading-out terminal access of A.C. contactor The threephase motor.

5. according to claim 4 from the A.C. contactor for carrying coil short protection, which is characterized in that described first Accessed between knife switch, the second knife switch, third knife switch and the main contacts of A.C. contactor first breaker, Second breaker, or first breaker, second are accessed between the threephase switch and the main contacts of A.C. contactor Breaker.

6. according to claim 1 from the A.C. contactor for carrying coil short protection, which is characterized in that including three-phase electricity The A phase of motivation, the second breaker, the first button switch, the second button switch and A.C. contactor, three phase mains is sequentially connected in series institute It states in the coil access zero curve N phase of the second breaker, the first button switch, the second button switch and A.C. contactor, second presses The auxiliary contact of button switch parallel connection A.C. contactor, the auxiliary contact of the A.C. contactor are secondary normally opened contact.

7. according to claim 6 from the A.C. contactor for carrying coil short protection, which is characterized in that the three-phase electricity A, B, C three-phase in source access the A.C. contactor through the first knife switch, the second knife switch and third knife switch respectively Main contacts in, the leading-out terminal of A.C. contactor accesses the threephase motor, opens in first knife switch, the second plug-in strip It closes, access second breaker between third knife switch and the main contacts of A.C. contactor.

8. according to claim 7 from the A.C. contactor for carrying coil short protection, which is characterized in that the three-phase electricity A, B, C three-phase in source access in the main contacts of the A.C. contactor by threephase switch, the leading-out terminal access of A.C. contactor The threephase motor accesses second breaker between the threephase switch and the main contacts of A.C. contactor.

9. according to claim 1 from the A.C. contactor for carrying coil short protection described in any one of -8, feature exists In the model DZ47-60C10A or DZ47-60C18A of first breaker, the model of second breaker is also DZ47-60C10A or DZ47-60C18A.