CN2821850Y - Selective protective switch - Google Patents
Selective protective switch Download PDFInfo
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- CN2821850Y CN2821850Y CN 200520045094 CN200520045094U CN2821850Y CN 2821850 Y CN2821850 Y CN 2821850Y CN 200520045094 CN200520045094 CN 200520045094 CN 200520045094 U CN200520045094 U CN 200520045094U CN 2821850 Y CN2821850 Y CN 2821850Y
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Abstract
The utility model discloses a selective switch, which comprises a tripping mechanism, an operating mechanism 102, a first contact head 104, an electromagnetic mechanism 106, and a second contact head 108, wherein the operating mechanism 103 controls the first contact head 104 and the second contact head 108 according to tripping signals of the tripping mechanism, and the electromagnetic mechanism 106 controls the second contact head 108. By using the technical scheme of the utility model, the defect of the selective protection function of a miniature breaker used in a terminal power distribution network is solved, and a method that the over step tripping between an upper and a lower switches can be solved on a certain degree is provided.
Description
Technical field
The utility model relates to Protector for electric appliances, more particularly, relates to the selective protection switch that uses in the terminal distribution network.
Background technology
At present; development along with architectural electricity and building automation; the application of miniature circuit breaker in the house power distribution system more and more widely; but, this type of switch (has only moving two segment protect characteristics of overload long delay and short circuit wink because mostly lacking the selective protection function; and do not have a short circuit short time delay protective feature) thus cause the phenomenon of overstep tripping in the house power distribution system commonplace, this has just greatly influenced the stability and the reliability of electric power system.Though front connected fuse can provide necessary short circuit backup protection, can not give the terminal power consumption equipment and protect with necessary selective, realizes this type of function so needed corresponding product badly, makes the terminal distribution system more reliable and more stable.
So just need a kind of selective switch that overcomes above-mentioned defective.
The utility model content
The purpose of this utility model provides a kind of selective protection switch that uses in the terminal distribution network, and its selective protection function can be realized by multiple mode.
According to one side of the present utility model, a kind of selective protection switch is provided, be connected between first binding post and second binding post, comprise: trip gear, operating mechanism, first contact, the electromagnetic mechanism and second contact, wherein said operating mechanism is controlled first contact and second contact according to the trip signal of described trip gear, described electromagnetic mechanism is controlled described second contact, trip gear comprises first overcurrent trip and second overcurrent trip, described second overcurrent trip current-limiting resistance of connecting, one end of described second overcurrent trip and current-limiting resistance is connected between first contact and second contact, the other end is connected in second binding post, described electromagnetic mechanism described first overcurrent trip of connecting, one end of the described electromagnetic mechanism and first overcurrent trip is connected first contact, and the other end connects first binding post; When protected circuit is in normal operating conditions, first contact and second contact are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through first overcurrent trip, electromagnetic mechanism, first contact, second contact successively and flows out; When overload took place circuit, first overcurrent trip acted on the operating mechanism, made win contact and the disconnection of second contact, cut off overload current; When being short-circuited current conditions, second contact is subjected to the effect of electromagnetic mechanism is scolded out at once, and current path becomes at once: first overcurrent trip, electromagnetic mechanism, first contact, current-limiting resistance, second overcurrent trip; Simultaneously, second overcurrent trip detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact is closed again so; If short trouble is not eliminated, then second overcurrent trip acts on win contact and second contact is disconnected fully.
According to an embodiment of the present utility model, described trip gear comprises first overcurrent trip and second overcurrent trip, wherein said first contact, one end links to each other with electromagnetic mechanism, electromagnetic mechanism is also linked an end of first overcurrent trip, the other end of first overcurrent trip is linked first binding post, the other end of second contact also links to each other with second binding post, connect second overcurrent trip and together be connected in parallel on the two ends of second contact of one current-limiting resistance, operating mechanism and first, second overcurrent trip links to each other, and act on first and second contacts, according to described first, second overcurrent trip closes it, divide operation; Electromagnetic mechanism only acts on second contact; When protected circuit is in normal operating conditions, first contact and second contact are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through first overcurrent trip, electromagnetic mechanism, first contact, second contact successively and flows out; When overload took place circuit, first overcurrent trip acted on the operating mechanism, made win contact and the disconnection of second contact, cut off overload current; When being short-circuited current conditions, second contact is subjected to the effect of electromagnetic mechanism is scolded out at once, and current path becomes at once: first overcurrent trip, electromagnetic mechanism, first contact, current-limiting resistance, second overcurrent trip; Simultaneously, second overcurrent trip detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact is closed again so; If short trouble is not eliminated, then second overcurrent trip acts on win contact and second contact is disconnected fully.
According to an embodiment of the present utility model, an end of the first contact other end and second contact constitutes a pair of contact structure jointly, and perhaps first contact and second contact are the single contacts of two series connection.
According to an embodiment of the present utility model, described first overcurrent trip and second overcurrent trip are bimetal leaf.
According to one side of the present utility model; a kind of selective protection switch is provided; be connected between first binding post and second binding post; comprise: trip gear, operating mechanism, first contact, electromagnetic mechanism and second contact; wherein said operating mechanism is controlled first contact and second contact according to the trip signal of described trip gear, and described electromagnetic mechanism is controlled described second contact.Described trip gear is an electronics trip gear, comprise detecting unit, electronic control unit and release, wherein series connection one detecting unit, detecting unit connect electronic control unit, electronic control unit connection release, release attended operation mechanism in the circuit between first binding post and the electromagnetic mechanism, first contact directly controlled by operating mechanism and second contact carries out branch, closing operation; The electric connecting mode of switch inside is that first binding post is linked electromagnetic mechanism, electromagnetic mechanism links first contact and second contact, second contact are linked second terminals, and a current-limiting resistance is connected in parallel on the two ends of second contact.Electromagnetic mechanism only acts on second contact; When in the circuit overload current taking place, detecting unit detects the fault current signal and is sent to electronic control unit, by the time of electronic control unit decision time-delay, triggers the release action then, drives operating mechanism first contact and second contact are disconnected; When being short-circuited electric current in the circuit, still detect the fault current signal and be sent to electronic control unit by detecting unit, electronic control unit starts default short circuit delay procedure, in this section delay time, when if short trouble is eliminated, be subjected to the electromagnetic mechanism effect and second contact that makes it to scold out is closed again, if short trouble is not eliminated, then electronic control unit triggers release, it is acted on first contact and second contact are disconnected fully.
According to an embodiment of the present utility model, described detecting unit is a current transformer, passes the circuit between first binding post and electromagnetic mechanism.
According to an embodiment of the present utility model, an end of the first contact other end and second contact constitutes a pair of contact structure jointly, and perhaps first contact and second contact are the single contacts of two series connection.
According to one side of the present utility model, a kind of selective protection switch is provided, be connected between first binding post and second binding post, comprise: trip gear, operating mechanism, first contact, electromagnetic mechanism and second contact, wherein said operating mechanism is controlled first contact and second contact according to the trip signal of described trip gear, and described electromagnetic mechanism is controlled described second contact; Described trip gear comprises first overcurrent trip and second overcurrent trip, described second overcurrent trip current-limiting resistance of connecting, one end of described second overcurrent trip and current-limiting resistance is connected between first contact and second contact, the other end is connected in second binding post, one end of described electromagnetic mechanism series connection connects first contact, the other end connects first binding post, one end of described first overcurrent trip is connected in second contact, and the other end is connected in second binding post; Operating mechanism links to each other with first, second overcurrent trip, and acts on first and second contacts, makes it close, divide operation according to described first, second overcurrent trip, and electromagnetic mechanism only acts on second contact; When protected circuit is in normal operating conditions, first contact and second contact are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism, first contact, second contact, first overcurrent trip successively and flows out; When overload took place circuit, first overcurrent trip acted on the operating mechanism, made win contact and the disconnection of second contact, cut off overload current; When being short-circuited current conditions, second contact is subjected to the effect of electromagnetic mechanism is scolded out at once, and current path becomes at once: electromagnetic mechanism, first contact, current-limiting resistance, second overcurrent trip; Simultaneously, second overcurrent trip detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, first contact is closed again so; If short trouble is not eliminated, then second overcurrent trip acts on win contact and second contact is disconnected fully.
According to an embodiment of the present utility model, described trip gear comprises first overcurrent trip and second overcurrent trip, wherein first contact, one end links to each other with electromagnetic mechanism, second contact is connected with first overcurrent trip and is linked second terminals again, connect second overcurrent trip and together be connected in parallel on the two ends of second contact and first overcurrent trip of one current-limiting resistance, operating mechanism and first, second overcurrent trip links to each other, and act on first and second contacts, according to described first, second overcurrent trip closes it, divide operation, electromagnetic mechanism only acts on second contact; When protected circuit is in normal operating conditions, first contact and second contact are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism, first contact, second contact, first overcurrent trip successively and flows out; When overload took place circuit, first overcurrent trip acted on the operating mechanism, made win contact and the disconnection of second contact, cut off overload current; When being short-circuited current conditions, second contact is subjected to the effect of electromagnetic mechanism is scolded out at once, and current path becomes at once: electromagnetic mechanism, first contact, current-limiting resistance, second overcurrent trip; Simultaneously, second overcurrent trip detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact is closed again so; If short trouble is not eliminated, then second overcurrent trip acts on win contact and second contact is disconnected fully.
According to an embodiment of the present utility model, an end of the first contact other end and second contact constitutes a pair of contact structure jointly, and perhaps first contact and second contact are the single contacts of two series connection.
According to an embodiment of the present utility model, described first overcurrent trip and second overcurrent trip are bimetal leaf.
Adopt the selective protection switch of the technical solution of the utility model design to remedy the deficiency of the miniature circuit breaker shortage selective protection function of using in the terminal distribution network, and a kind of mode that can solve overstep tripping problem between the superior and the subordinate's switch to a certain extent is provided.
Description of drawings
The above and other feature of the utility model, character and advantage will further describe below in conjunction with the accompanying drawings and embodiments, and identical in the accompanying drawings Reference numeral is represented identical feature all the time, wherein,
Fig. 1 is the structural principle schematic diagram according to first embodiment of first implementation of the present utility model;
Fig. 2 is the structural principle schematic diagram according to second embodiment of first implementation of the present utility model;
Fig. 3 is the structural principle schematic diagram according to the 3rd embodiment of first implementation of the present utility model;
Fig. 4 is the structural principle schematic diagram according to the 4th embodiment of second implementation of the present utility model;
Fig. 5 is the structural principle schematic diagram according to the 5th embodiment of second implementation of the present utility model;
Fig. 6 is the structural principle schematic diagram according to the 6th embodiment of second implementation of the present utility model;
Fig. 7 is the structural principle schematic diagram according to the 7th embodiment of the 3rd implementation of the present utility model;
Fig. 8 is the structural principle schematic diagram according to the 8th embodiment of the 3rd implementation of the present utility model;
Fig. 9 is the structural principle schematic diagram according to the 9th embodiment of the 3rd implementation of the present utility model;
Figure 10 is the structural principle schematic diagram according to the tenth embodiment of the 3rd implementation of the present utility model.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
Selective switch of the present utility model can use multiple mode to realize, describes below in conjunction with accompanying drawing:
Implementation one
This kind implementation comprises Fig. 1-embodiment shown in Figure 3, wherein trip gear comprises first overcurrent trip 200 and second overcurrent trip 202, second overcurrent trip, 202 series connection, one current-limiting resistance 300, one end of second overcurrent trip 202 and current-limiting resistance 300 is connected between first contact 104 and second contact 108, the other end is connected in second binding post 112, electromagnetic mechanism 106 series connection first overcurrent trip 200, one end of the electromagnetic mechanism 106 and first overcurrent trip 200 is connected first contact 104, and the other end connects first binding post 110; When protected circuit is in normal operating conditions, first contact 104 and second contact 108 are closed, and because the existence of current-limiting resistance 300, the current path of this switch inside flows through first overcurrent trip 200, electromagnetic mechanism 106, first contact 104, second contact 108 successively and flows out; When overload took place circuit, first overcurrent trip 200 acted on the operating mechanism 102, made win contact 104 and 108 disconnections of second contact, cut off overload current; When being short-circuited current conditions, second contact 108 is subjected to the effect of electromagnetic mechanism 106 is scolded out at once, and current path becomes at once: first overcurrent trip 200, electromagnetic mechanism 106, first contact 104, current-limiting resistance 300, second overcurrent trip 202; Simultaneously, second overcurrent trip 202 detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact 108 is closed again so; If short trouble is not eliminated, then second overcurrent trip 202 acts on win contact 104 and second contact 108 is disconnected fully.
On structure, the principal character of this kind implementation is: adopt mechanical trip gear, and first release and second release be distributed in the not homonymy of two contacts, electromagnetic mechanism is positioned at first release, one side.
First embodiment
With reference to figure 1, according to first embodiment of the present utility model, trip gear comprises first overcurrent trip 200 and second overcurrent trip 202, wherein first contact, 104 1 ends link to each other with electromagnetic mechanism 106, electromagnetic mechanism 106 is also linked an end of first overcurrent trip 200, the other end of first overcurrent trip 200 is linked first binding post 110, one end of first contact, 104 other ends and second contact 108 constitutes a pair of contact structure jointly, second contact 108 also links to each other with second binding post 112, one current-limiting resistance, 300 series connection, second overcurrent trip 202 also together is connected in parallel on the two ends of second contact 108, operating mechanism 102 and first, second overcurrent trip 200,202 link to each other, and act on first and second contacts 104, on 108, according to first, second overcurrent trip 200,202 close it, divide operation; 106 of electromagnetic mechanisms act on second contact 108, when protected circuit is in normal operating conditions, first contact 104 and second contact 108 are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through first overcurrent trip 200, electromagnetic mechanism 106, first contact 104, second contact 108 from first binding post 110 successively and flows out second binding post 112 again; When overload takes place in circuit, first overcurrent trip 200 acts on the operating mechanism 102, make win contact 104 and 108 disconnections of second contact, cut off overload current, it is characterized in that, when being short-circuited current conditions, second contact 108 is subjected to the effect of electromagnetic mechanism 106 is scolded out at once, and current path becomes at once: first overcurrent trip 200, electromagnetic mechanism 106, first contact 104, current-limiting resistance 300, second overcurrent trip 202; Simultaneously, second overcurrent trip 202 detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact 108 is closed again so; If short trouble is not eliminated, then second overcurrent trip 202 acts on win contact 104 and second contact 108 is disconnected fully, and having only at this moment that armrest is moving could closed again first contact 104 and second contact 108.Can see that from this embodiment the involved selective switch of the utility model can remedy miniature circuit breaker in the shortcoming aspect the selectivity function.According to first embodiment of the present utility model, first overcurrent trip 200 and second overcurrent trip 202 adopt bimetal leaf.
Second embodiment
With reference to figure 2, it shows second embodiment of the present utility model, it is with the difference of embodiment shown in Figure 1: first contact 104 and second contact 108 are two single contacts of connecting, rather than form the double-contact structure like that among first embodiment shown in the image pattern 1.Simultaneously, second overcurrent trip 202 and the current-limiting resistance 300 of series connection have exchanged the position mutually.
The 3rd embodiment
With reference to figure 3, it shows the 3rd embodiment of the present utility model, and it is with the difference of embodiment shown in Figure 1: first overcurrent trip 200 and the electromagnetic mechanism 106 of connecting exchanged the position mutually.
Sum up, adopts first kind of implementation, the device of series connection can transposition mutually on the same current branch, and the while, two contacts also can adopt different connected modes.This all is within protection range of the present utility model.Simultaneously, need explanation, first contact 104 described herein and second contact 108, first overcurrent trip 200 and second overcurrent trip 202, and first binding post 110 and second binding post 112 all be notion of equal value, that is, first binding post 110 can be that the end of incoming cables also can be a leading-out terminal, correspondingly, second binding post 112 can be leading-out terminal or end of incoming cables.
Implementation two
This kind implementation comprises Fig. 4-embodiment shown in Figure 6, wherein trip gear is an electronics trip gear 400, comprise detecting unit 402, electronic control unit 404 and release 406, wherein series connection one detecting unit 402, detecting unit 402 connect electronic control unit 404 in the circuit between first binding post 110 and the electromagnetic mechanism 106, electronic control unit 404 connects release 406, release 406 attended operation mechanisms 102, operating mechanism 102 direct control first contacts 104 and second contact 108 and carries out branch, closing operation; The electric connecting mode of switch inside is that first binding post 110 is linked electromagnetic mechanism 106, electromagnetic mechanism 106 links first contact 104 and second contact 108, second contact 108 are linked the two ends that second binding post, 112, one current-limiting resistances 300 are connected in parallel on second contact 108.106 of electromagnetic mechanisms act on second contact 108; In when, in the circuit overload current taking place when, detecting unit 402 detects the fault current signal and is sent to electronic control unit 404, by the time of electronic control unit 404 decision time-delays, trigger release 406 actions then, drive operating mechanism 102 first contact 104 and second contact 108 are disconnected; When being short-circuited electric current in the circuit, still detect the fault current signal and be sent to electronic control unit 404 by detecting unit 402, electronic control unit 404 starts default short circuit delay procedure, in this section delay time, when if short trouble is eliminated, second contact 108 that is subjected to electromagnetic mechanism 106 effects and makes it to scold out is closed again, if short trouble is not eliminated, then electronic control unit 404 triggers release 406, it is acted on first contact 104 and second contact 108 are disconnected fully.
This kind implementation characteristics structurally are: adopt electronic installation to substitute mechanical current-release device.Detecting unit 402 in the electronic installation can be a current transformer, if current transformer then passes the circuit between first binding post 110 and electromagnetic mechanism 106.
The 4th embodiment
With reference to figure 4, it shows the 4th embodiment of the present utility model, according to the 4th embodiment of the present utility model, first overcurrent trip 200 can reach by the principle that operating mechanism 102 disconnects first contact 104 and second contact 108 under the current overload situation and descend the operating principle available electron mode of second overcurrent trip 202 to finish in the short circuit current situation, wherein said trip gear is an electronics trip gear 400, comprise detecting unit 402, electronic control unit 404 and release 406 are connected into detecting unit 402 with first binding post 110, detecting unit 402 is connected into electronic control unit 404, electronic control unit 404 is connected into release 406, release 406 is connected into operating mechanism 102, operating mechanism 102 is directly controlled first contact 104 and second contact 108 and is divided, closing operation; Detecting unit 402 is also linked electromagnetic mechanism 106, electromagnetic mechanism 106 links first contact 104 and second contact 108, second contact 108 are linked second binding post 112, one end of first contact, 104 other ends and second contact 108 constitutes a pair of contact structure jointly, second contact 108 also links to each other with second binding post 112, one current-limiting resistance 300 is connected in parallel on the two ends of second contact 108, and 106 of electromagnetic mechanisms act on second contact 108.The operation principle of this embodiment is as follows, in when, in the circuit overload current taking place when, detecting unit 402 detects the fault current signal and is sent to electronic control unit 404, by the time of electronic control unit 404 decision time-delays, trigger release 406 actions then, drive and make first contact 104 and 108 disconnections of second contact on the operating mechanism 102; When being short-circuited electric current in the circuit, detect the fault current signal by detecting unit 402 and be sent to electronic control unit 404, electronic control unit 404 starts default short circuit delay procedure at once, in this section delay time, when if short trouble is eliminated, second contact 108 that is subjected to electromagnetic mechanism 106 effects and makes it to scold out is closed again, if short trouble is not eliminated, then electronic control unit 404 triggers release 406, make it act on operating mechanism 102 immediately first contact 104 and second contact 108 are disconnected fully, this moment can only the moving ability of armrest Closing Switch.Can see that from this embodiment the utility model can expand its defencive function by the part components and parts that change wherein.
The 5th embodiment
With reference to figure 5, it shows the 5th embodiment of the present utility model, the difference of itself and the 4th embodiment shown in Figure 4 is that first contact 104 and second contact 108 form the double-contact structures, rather than are the single contact of two series connection like that among the 4th embodiment shown in the image pattern 4.Simultaneously, electronic installation 400 and electromagnetic mechanism 106 are positioned at second binding post, 112 1 sides, rather than are positioned at first binding post, 110 1 sides as the 4th embodiment.
The 6th embodiment
With reference to figure 6, it shows the 6th embodiment of the present utility model, the difference of itself and the 5th embodiment shown in Figure 5 is that first contact 104 and second contact 108 are single contacts of two series connection, rather than form the double-contact structure like that among the 5th embodiment shown in the image pattern 5.
Sum up, adopt second kind of implementation, two contacts also can adopt different connected modes.This all is within protection range of the present utility model.Simultaneously, need explanation, first contact 104 described herein and second contact 108, and first binding post 110 and second binding post 112 all be notion of equal value, promptly, first binding post 110 can be that input terminal also can be an outlet terminal, and correspondingly, second binding post 112 can be outlet terminal or input terminal.
Implementation three
The embodiment that adopts this kind implementation is shown in Fig. 7-10, wherein trip gear comprises first overcurrent trip 500 and second overcurrent trip 502, second overcurrent trip, 502 series connection, one current-limiting resistance 300, one end of second overcurrent trip 502 and current-limiting resistance 300 is connected between first contact 104 and second contact 108, the other end is connected in one second binding post 112, one end of electromagnetic mechanism 106 series connection connects first contact 104, the other end connects first binding post 110, one end of first overcurrent trip 500 is connected in second contact 108, and the other end is connected in second binding post 112; Operating mechanism 102 links to each other with first, second overcurrent trip 500,502, and act on first and second contacts 104,108, make it close, divide operation according to first, second overcurrent trip 500,502,106 of electromagnetic mechanisms act on second contact 108; When protected circuit is in normal operating conditions, first contact 104 and second contact 108 are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism 106, first contact 104, second contact 108, first overcurrent trip 500 successively and flows out; When overload took place circuit, first overcurrent trip 500 acted on the operating mechanism 106, made win contact 104 and 108 disconnections of second contact, cut off overload current; When being short-circuited current conditions, second contact 108 is subjected to the effect of electromagnetic mechanism 106 is scolded out at once, and current path becomes at once: electromagnetic mechanism, first contact 104, current-limiting resistance, second overcurrent trip 502; Simultaneously, second overcurrent trip 502 detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact 108 is closed again so; If short trouble is not eliminated, then second overcurrent trip 502 acts on win contact 104 and second contact 108 is disconnected fully.
On structure, the principal character of this kind implementation is: adopt mechanical trip gear, and first release and second release be distributed in the same side of two contacts, electromagnetic mechanism is positioned at opposite side.
The 7th embodiment
With reference to figure 7, it shows the 7th embodiment of the present utility model, and according to the 7th embodiment of the present utility model, first overcurrent trip 500 and second contact 108 be cascaded can guarantee that two overcurrent trips only work under each autocorrelative operating mode; Trip gear comprises first overcurrent trip 500 and second overcurrent trip 502, wherein first contact, 104 1 ends link to each other with electromagnetic mechanism 106, one end of the other end and second contact 108 constitutes a pair of contact structure jointly, second contact 108 is connected with first overcurrent trip 500 and is linked leading-out terminal again, one current-limiting resistance, 300 series connection, second overcurrent trip 502 also together is connected in parallel on the two ends of second contact 108 and first overcurrent trip 500, operating mechanism 102 and first, second overcurrent trip 500,502 link to each other, and act on first and second contacts 104, on 108 according to described first, second overcurrent trip 500,502 close it, divide operation, 106 of electromagnetic mechanisms act on second contact 108; When protected circuit is in normal operating conditions, first contact 104 and second contact 108 are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism 106, first contact 104, second contact 108, first overcurrent trip 500 from first binding post 110 successively and flows out second binding post 112 again; When overload took place circuit, first overcurrent trip 500 acted on the operating mechanism, made win contact 104 and 108 disconnections of second contact, cut off overload current; When being short-circuited current conditions, second contact 108 is subjected to the effect of electromagnetic mechanism 106 is scolded out at once, and current path becomes at once: electromagnetic mechanism 106, first contact 104, current-limiting resistance 300, second overcurrent trip 502; Simultaneously, second overcurrent trip 502 detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact 108 is closed again so; If short trouble is not eliminated, then second overcurrent trip 502 acts on and makes win contact 104 and the disconnection of second contact, 108 switches on the operating mechanism, and at this moment having only armrest to move could closed again first contact 104 and second contact 108.According to the 7th embodiment of the present utility model, first overcurrent trip 500 and second overcurrent trip 502 adopt bimetal leaf.
The 8th embodiment
With reference to figure 8, it shows the 8th embodiment of the present utility model, and its difference with the 7th embodiment is: first contact 104 and second contact 108 are two single contacts of connecting, rather than form the double-contact structure like that among the 7th embodiment shown in the image pattern 7.Simultaneously, second overcurrent trip 502 and the current-limiting resistance 300 of series connection have exchanged the position mutually.
The 9th embodiment
With reference to figure 9, it shows the 9th embodiment of the present utility model, and the difference of itself and the 7th embodiment is: first contact 104 and second contact 108 constitute the double-contact of another kind of form; Simultaneously, electromagnetic mechanism 106 and trip gear have exchanged the position.
The tenth embodiment
With reference to Figure 10, it shows the tenth embodiment of the present utility model, the difference of itself and the 9th embodiment is, changed the node location of the branch road that forms by the current-limiting resistance 300 and second overcurrent trip 502, in this embodiment, this node at first is connected to first overcurrent trip 500, is connected to binding post afterwards, rather than picture is connected the outside of first overcurrent trip 500 in other embodiments.
Sum up, adopts first kind of implementation, the device of series connection can transposition mutually on the same current branch, and the while, two contacts also can adopt different connected modes.This all is within protection range of the present utility model.Simultaneously, need explanation, first contact 104 described herein and second contact 108, first overcurrent trip 500 and second overcurrent trip 502, and first binding post 110 and second binding post 112 all be notion of equal value, that is, first binding post 110 can be that input terminal also can be an outlet terminal, correspondingly, second binding post 112 can be outlet terminal or input terminal.
Need explanation; though show ten different embodiment of three kinds of implementations of the present utility model above; but scope of the present utility model is not limited to above-mentioned several specifically described embodiment; wherein each parts trip gear; operating mechanism 102; first contact 104; electromagnetic mechanism 106; second contact 108; comprise first overcurrent trip 200 in the trip gear; 500 and second overcurrent trip 202; 502; and the concrete putting position of electronics trip gear 400 is not limited to three above-mentioned specific embodiments; their putting position is variable; as long as its principle meet by the foregoing description can push away maximum magnitude; that is: a kind ofly be connected selective protection switch between first binding post and second binding post; comprise: trip gear; operating mechanism; first contact; the electromagnetic mechanism and second contact; wherein operating mechanism is controlled first contact and second contact according to the trip signal of trip gear; electromagnetic mechanism is controlled second contact, promptly should be considered to be within the protection range of the present utility model.
Adopt the selective protection switch of the technical solution of the utility model design to remedy the deficiency of the miniature circuit breaker shortage selective protection function of using in the terminal distribution network, and a kind of mode that can solve overstep tripping problem between the superior and the subordinate's switch to a certain extent is provided.
Though the technical solution of the utility model is illustrated in conjunction with preferred embodiment; but it should be appreciated by those skilled in the art; various modifications or change for the above embodiments are predictable; this should not be regarded as having exceeded protection range of the present utility model; therefore; protection range of the present utility model is not limited to above-mentioned specifically described embodiment, and should be the most wide in range scope that meets the inventive features that discloses in this place.
Claims (9)
1. selective protection switch, be connected between first binding post (110) and second binding post (112), it is characterized in that, comprise: trip gear, operating mechanism (102), first contact (104), electromagnetic mechanism (106) and second contact (108), wherein said operating mechanism (102) is controlled first contact (104) and second contact (108) according to the trip signal of described trip gear, described electromagnetic mechanism (106) control described second contact (108), described trip gear comprises first overcurrent trip (200) and second overcurrent trip (202), described second overcurrent trip (202) series connection one current-limiting resistance (300), one end of described second overcurrent trip (202) and current-limiting resistance (300) is connected between first contact (104) and second contact (108), the other end is connected in second binding post (112), described electromagnetic mechanism (106) series connection described first overcurrent trip (200), one end of described electromagnetic mechanism (106) and first overcurrent trip (200) is connected first contact (104), and the other end connects first binding post (110);
When protected circuit is in normal operating conditions, first contact (104) and second contact (108) are closed, and because the existence of current-limiting resistance (300), the current path of this switch inside flows through first overcurrent trip (200), electromagnetic mechanism (106), first contact (104), second contact (108) successively and flows out; When overload took place circuit, first overcurrent trip (200) acted on the operating mechanism (102), and contact of winning (104) and second contact (108) are disconnected, and cut off overload current; When being short-circuited current conditions, second contact (108) is subjected to the effect of electromagnetic mechanism (106) is scolded out at once, and current path becomes at once: first overcurrent trip (200), electromagnetic mechanism (106), first contact (104), current-limiting resistance (300), second overcurrent trip (202); Simultaneously, second overcurrent trip (202) detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact (108) is closed again so; If short trouble is not eliminated, then second overcurrent trip (202) acts on contact of winning (104) and second contact (108) is disconnected fully.
2. selective protection switch as claimed in claim 1, it is characterized in that, described trip gear comprises first overcurrent trip (200) and second overcurrent trip (202), wherein said first contact (104) one ends link to each other with electromagnetic mechanism (106), electromagnetic mechanism (106) is also linked an end of first overcurrent trip (200), the other end of first overcurrent trip (200) is linked first terminals (110), the other end of second contact (108) also links to each other with second terminals (112), one current-limiting resistance (300) series connection second overcurrent trip (202) also together is connected in parallel on the two ends of second contact (108), operating mechanism (102) and first, second overcurrent trip (200), (202) link to each other, and act on first and second contacts (104), (108) on, according to described first, second overcurrent trip (200), (202) it is closed, divide operation; Electromagnetic mechanism (106) only acts on second contact (108);
When protected circuit is in normal operating conditions, first contact (104) and second contact (108) are closed, and because the existence of current-limiting resistance (300), the current path of this switch inside flows through first overcurrent trip (200), electromagnetic mechanism (106), first contact (104), second contact (108) successively and flows out; When overload took place circuit, first overcurrent trip (200) acted on the operating mechanism (102), and contact of winning (104) and second contact (108) are disconnected, and cut off overload current; When being short-circuited current conditions, second contact (108) is subjected to the effect of electromagnetic mechanism (106) is scolded out at once, and current path becomes at once: first overcurrent trip (200), electromagnetic mechanism (106), first contact (104), current-limiting resistance (300), second overcurrent trip (202); Simultaneously, second overcurrent trip (202) detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact (108) is closed again so; If short trouble is not eliminated, then second overcurrent trip (202) acts on contact of winning (104) and second contact (108) is disconnected fully.
3. selective protection switch as claimed in claim 1 or 2 is characterized in that, described first overcurrent trip (200) and second overcurrent trip (202) are bimetal leaf.
4. selective protection switch, be connected between first binding post (110) and second binding post (112), it is characterized in that, comprise: trip gear, operating mechanism (102), first contact (104), electromagnetic mechanism (106) and second contact (108), wherein said trip gear is an electronics trip gear (400), comprise detecting unit (402), electronic control unit (404) and release (406), wherein series connection one detecting unit (402) in the circuit between first binding post (110) and the electromagnetic mechanism (106), detecting unit (402) connects electronic control unit (404), electronic control unit (404) connects release (406), release (406) attended operation mechanism (102), first contact (104) directly controlled by operating mechanism (102) and second contact (108) divides, closing operation; The electric connecting mode of switch inside is that first terminals (110) are linked electromagnetic mechanism (106), electromagnetic mechanism (106) links first contact (104) and second contact (108), second contact (108) are linked second terminals (112), one current-limiting resistance (300) is connected in parallel on the two ends of second contact (108), and electromagnetic mechanism (106) only acts on second contact (108);
In when, in the circuit overload current taking place when, detecting unit (402) detects the fault current signal and is sent to electronic control unit (404), by the time of electronic control unit (404) decision time-delay, trigger release (406) action then, drive operating mechanism (102) first contact (104) and second contact (108) are disconnected; When being short-circuited electric current in the circuit, still detect the fault current signal and be sent to electronic control unit (404) by detecting unit (402), electronic control unit (404) starts default short circuit delay procedure, in this section delay time, when if short trouble is eliminated, second contact (108) that is subjected to electromagnetic mechanism (106) effect and makes it to scold out is closed again, if short trouble is not eliminated, then electronic control unit (404) triggers release (406), it is acted on first contact (104) and second contact (108) are disconnected fully.
5. selective protection switch as claimed in claim 4 is characterized in that, described detecting unit (402) is a current transformer, passes the circuit between first binding post (110) and electromagnetic mechanism (106).
6. selective protection switch, be connected between first binding post (110) and second binding post (112), it is characterized in that, comprise: trip gear, operating mechanism (102), first contact (104), electromagnetic mechanism (106) and second contact (108), wherein said trip gear comprises first overcurrent trip (500) and second overcurrent trip (502), described second overcurrent trip (502) series connection one current-limiting resistance (300), one end of described second overcurrent trip (502) and current-limiting resistance (300) is connected between first contact (104) and second contact (108), the other end is connected in second binding post (112), one end of described electromagnetic mechanism (106) series connection connects first contact (104), the other end connects first binding post (110), one end of described first overcurrent trip (500) is connected in second contact (108), and the other end is connected in second binding post (112);
Operating mechanism (102) links to each other with first, second overcurrent trip (500), (502), and act on first and second contacts (104), (108), make it close, divide operation according to described first, second overcurrent trip (500), (502), electromagnetic mechanism (106) only acts on second contact (108); When protected circuit is in normal operating conditions, (104 and second contact (108) is closed to first contact, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism (106), first contact (104), second contact (108), first overcurrent trip (500) successively and flows out; When overload took place circuit, first overcurrent trip (500) acted on the operating mechanism (106), and contact of winning (104) and second contact (108) are disconnected, and cut off overload current; When being short-circuited current conditions, second contact (108) is subjected to the effect of electromagnetic mechanism (106) is scolded out at once, and current path becomes at once: electromagnetic mechanism, first contact (104), current-limiting resistance, second overcurrent trip (502); Simultaneously, second overcurrent trip (502) detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact (108) is closed again so; If short trouble is not eliminated, then second overcurrent trip (502) acts on contact of winning (104) and second contact (108) is disconnected fully.
7. selective protection switch as claimed in claim 6, it is characterized in that, described trip gear comprises first overcurrent trip (500) and second overcurrent trip (502), wherein first contact (104) one ends link to each other with electromagnetic mechanism (106), second contact (108) is connected with first overcurrent trip (500) and is linked second binding post (112) again, one current-limiting resistance (300) series connection second overcurrent trip (502) also together is connected in parallel on second contact (108) and the two ends of first overcurrent trip (500), operating mechanism (102) and first, second overcurrent trip (500), (502) link to each other, and act on first and second contacts (104), (108) on, according to described first, second overcurrent trip (500), (502) it is closed, divide operation, electromagnetic mechanism (106) only acts on second contact (108);
When protected circuit is in normal operating conditions, first contact (104) and second contact (108) are closed, and because the existence of current-limiting resistance, the current path of this switch inside flows through electromagnetic mechanism (106), first contact (104), second contact (108), first overcurrent trip (500) successively and flows out; When overload took place circuit, first overcurrent trip (500) acted on the operating mechanism (106), and contact of winning (104) and second contact (108) are disconnected, and cut off overload current; When being short-circuited current conditions, second contact (108) is subjected to the effect of electromagnetic mechanism (106) is scolded out at once, and current path becomes at once: electromagnetic mechanism, first contact (104), current-limiting resistance, second overcurrent trip (502); Simultaneously, second overcurrent trip (502) detects fault current and correspondingly makes the reaction of delayed releasing, and in this section delay time, if short trouble is eliminated, second contact (108) is closed again so; If short trouble is not eliminated, then second overcurrent trip (502) acts on contact of winning (104) and second contact (108) is disconnected fully.
8. as claim 6 or 7 described selective protection switch, it is characterized in that described first overcurrent trip (500) and second overcurrent trip (502) are bimetal leaf.
9. as claim 1 to 2; or each described selective protection switch in 4 to 7; it is characterized in that; one end of first contact (104) other end and second contact (108) constitutes a pair of contact structure jointly, and perhaps first contact (104) and second contact (108) are the single contacts of two series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045094 CN2821850Y (en) | 2005-09-19 | 2005-09-19 | Selective protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045094 CN2821850Y (en) | 2005-09-19 | 2005-09-19 | Selective protective switch |
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| Publication Number | Publication Date |
|---|---|
| CN2821850Y true CN2821850Y (en) | 2006-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520045094 Expired - Lifetime CN2821850Y (en) | 2005-09-19 | 2005-09-19 | Selective protective switch |
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| CN (1) | CN2821850Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102077435A (en) * | 2008-06-27 | 2011-05-25 | 西门子公司 | Method for selectively triggering circuit breakers in the event of a short circuit |
| CN101630612B (en) * | 2008-07-15 | 2011-06-29 | 浙江正泰电器股份有限公司 | Main contact device of selective protective breaker |
| CN101488424B (en) * | 2008-01-14 | 2011-07-13 | 上海电科电器科技有限公司 | Selective protection switch |
| CN101807497B (en) * | 2009-02-17 | 2014-10-15 | 施耐德电器工业公司 | Direct-current circuit breaker with selectivity |
| CN107210168A (en) * | 2015-01-23 | 2017-09-26 | J·斯姆尔科利 | Line protection switch |
| CN108376974A (en) * | 2018-02-11 | 2018-08-07 | 国网陕西省电力公司电力科学研究院 | A kind of power distribution network relay protection system based on current limliting Graded coordination |
| US11413736B2 (en) | 2015-11-11 | 2022-08-16 | Robert Bosch Gmbh | Hand-held power tool |
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2005
- 2005-09-19 CN CN 200520045094 patent/CN2821850Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488424B (en) * | 2008-01-14 | 2011-07-13 | 上海电科电器科技有限公司 | Selective protection switch |
| CN102077435A (en) * | 2008-06-27 | 2011-05-25 | 西门子公司 | Method for selectively triggering circuit breakers in the event of a short circuit |
| US8503142B2 (en) | 2008-06-27 | 2013-08-06 | Siemens Aktiengesellschaft | Method for selectively triggering circuit breakers in the event of a short circuit |
| CN102077435B (en) * | 2008-06-27 | 2014-04-30 | 西门子公司 | Method for selectively triggering circuit breakers in the event of a short circuit |
| CN101630612B (en) * | 2008-07-15 | 2011-06-29 | 浙江正泰电器股份有限公司 | Main contact device of selective protective breaker |
| CN101807497B (en) * | 2009-02-17 | 2014-10-15 | 施耐德电器工业公司 | Direct-current circuit breaker with selectivity |
| CN107210168A (en) * | 2015-01-23 | 2017-09-26 | J·斯姆尔科利 | Line protection switch |
| US11413736B2 (en) | 2015-11-11 | 2022-08-16 | Robert Bosch Gmbh | Hand-held power tool |
| CN108376974A (en) * | 2018-02-11 | 2018-08-07 | 国网陕西省电力公司电力科学研究院 | A kind of power distribution network relay protection system based on current limliting Graded coordination |
| CN108376974B (en) * | 2018-02-11 | 2019-09-03 | 国网陕西省电力公司电力科学研究院 | A kind of power distribution network relay protection system based on current limliting Graded coordination |
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