CN212695094U - Circuit breakers, distribution systems and signal detection systems - Google Patents
Circuit breakers, distribution systems and signal detection systems Download PDFInfo
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- CN212695094U CN212695094U CN202021609894.1U CN202021609894U CN212695094U CN 212695094 U CN212695094 U CN 212695094U CN 202021609894 U CN202021609894 U CN 202021609894U CN 212695094 U CN212695094 U CN 212695094U
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Abstract
本实用新型涉及低压电器领域，具体涉及一种断路器，其断路极电路包括输入端子T1、输出端子T2和主触头机构，断路器还包括第一信号组件，第一信号组件包括第一信号端子ST1和辅助触头机构，第一信号端子ST1通过辅助触头机构与输出端子T2相连，操作机构OM驱动主触头机构闭合且辅助触头机构断开，或者操作机构OM驱动主触头机构断开且辅助触头机构闭合；所述第一信号端子ST1用于判断主触头机构是否熔焊；本实用新型断路器可检测主触头机构是否发生熔焊。本实用新型还公开一种包括所述断路器的配电系统，其装配更加安全、可靠；本实用新型还公开一种包括所述配电系统的信号检测系统，能检测断路器的主触头机构是否熔焊。
The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. The circuit breaker circuit includes an input terminal T1, an output terminal T2 and a main contact mechanism. The circuit breaker further includes a first signal component, and the first signal component includes a first signal The terminal ST1 and the auxiliary contact mechanism, the first signal terminal ST1 is connected to the output terminal T2 through the auxiliary contact mechanism, the operating mechanism OM drives the main contact mechanism to close and the auxiliary contact mechanism is disconnected, or the operating mechanism OM drives the main contact mechanism open and the auxiliary contact mechanism is closed; the first signal terminal ST1 is used to judge whether the main contact mechanism is welded; the circuit breaker of the utility model can detect whether the main contact mechanism is welded. The utility model also discloses a power distribution system including the circuit breaker, the assembly of which is safer and more reliable; the utility model also discloses a signal detection system including the power distribution system, which can detect the main contacts of the circuit breaker Whether the mechanism is fusion welded.
Description
Technical Field
The utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker; to a power distribution system comprising said circuit breaker; it also relates to a signal detection system comprising said power distribution system.
Background
The circuit breaker can be used for switching on and switching off electrical equipment of a circuit, as the main contact of the circuit breaker needs to bear larger current generally, when the switching-on and switching-off times of the circuit breaker are too large, the resistance between the main contacts is too large, or the heat productivity of the contacts is larger due to too large instantaneous current flowing through, the main contact is easy to generate fusion welding and adhesion, and the circuit breaker can not be switched off. The existing circuit breaker has no fusion welding detection function and has potential safety hazards in use.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a circuit breaker which can detect whether the main contact mechanism generates fusion welding; also provided is a power distribution system including the circuit breaker, which is more secure and reliable in assembly; the signal detection system comprises the power distribution system, and realizes detection on whether fusion welding occurs to the main contact mechanism of the circuit breaker.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circuit breaker comprises a circuit breaker pole circuit and an operating mechanism OM, wherein the circuit breaker pole circuit comprises an input terminal T1, an output terminal T2 and a main contact mechanism connected between the input terminal T1 and the output terminal T2 in series, and the main contact mechanism comprises a main contact MC1 and a main static contact SC1 which are matched; the circuit breaker further comprises a first signal assembly, the first signal assembly comprises a first signal terminal ST1 and an auxiliary contact mechanism, the auxiliary contact mechanism comprises an auxiliary moving contact MC2 and an auxiliary static contact SC2 which are matched with each other, and the first signal terminal ST1 is connected with an output terminal T2 through the auxiliary contact mechanism; the operating mechanism OM is in driving fit with the main contact mechanism and the auxiliary contact mechanism respectively, and drives the main contact mechanism to be closed and the auxiliary contact mechanism to be opened or drives the main contact mechanism to be opened and the auxiliary contact mechanism to be closed; the first signal terminal ST1 is used to determine whether the main contact mechanism is welded.
Preferably, after the circuit breaker performs the opening operation, it is determined that the main contact mechanism is welded if the first signal terminal ST1 outputs a signal, and it is determined that the main contact mechanism is not welded if the first signal terminal ST1 does not output a signal.
Preferably, the auxiliary contact mechanism is driven to close/open by the operating mechanism OM or the active contact MC 1.
Preferably, the driving end of the auxiliary contact mechanism is located on a moving path of the operating mechanism OM or the active contact MC1 when the circuit breaker is switched on or switched off.
Preferably, when the circuit breaker is switched on, the operating mechanism OM drives the main contact mechanism to be closed and the auxiliary contact mechanism to be opened; when the circuit breaker is opened, the operating mechanism OM drives the main contact mechanism to be disconnected and the auxiliary contact mechanism to be closed.
Preferably, the auxiliary contact mechanism is a microswitch.
Preferably, the first signal assembly further comprises a current limiting resistor R1, and the first signal terminal ST1 is connected in series with the auxiliary contact mechanism through the current limiting resistor R1.
Preferably, the circuit breaker further comprises a second signal assembly, the second signal assembly comprises a second signal terminal ST2, the second signal terminal ST2 is connected with the output terminal T2, and the second signal terminal ST2 is used for judging the closed and open states of the main contact mechanism.
Preferably, the second signal assembly further includes a current limiting resistor R2, and the second signal terminal ST2 is connected to the output terminal T2 through the current limiting resistor R2.
Preferably, after the circuit breaker performs the opening operation, it is determined that the main contact mechanism is welded if the first signal terminal ST1 outputs a signal or both the first signal terminal ST1 and the second signal terminal ST2 output signals, closed if the first signal terminal ST1 outputs no signal and the second signal terminal ST2 outputs a signal, and opened if the first signal terminal ST1 outputs no signal and the second signal terminal ST2 outputs a signal.
Preferably, the circuit breaker further comprises a through pole circuit comprising an input terminal T3, an output terminal T4, and a through pole conductor connected in series between the input terminal T3 and the output terminal T4.
A power distribution system comprising the circuit breaker; the power distribution system also comprises a power supply and a Load which are respectively connected with the input end and the output end of the circuit breaker; the power supply is a direct current power supply DC or an alternating current power supply AC.
Preferably, the circuit breaker further comprises a through pole circuit comprising an input terminal T3, an output terminal T4, and a through pole conductor connected in series between the input terminal T3 and the output terminal T4; the power supply is connected to the input terminal T1 and the input terminal T3, respectively, and the Load is connected to the output terminal T2 and the output terminal T4, respectively.
A signal detection system comprising said power distribution system; the signal detection system also comprises a first signal detection device V1, and the first signal detection device V1 is connected with a first signal terminal ST1 to judge whether the main contact mechanism of the circuit breaker is welded or not.
Preferably, the circuit breaker further comprises a second signal assembly, the second signal assembly comprises a second signal terminal ST2, and the second signal terminal ST2 is connected with the output terminal T2;
the signal detection system further comprises a second signal detection device V2, the second signal detection device V2 being connected to the second signal terminal ST2 for determining the closed and open state of the main contact mechanism.
Preferably, the circuit breaker further comprises a through pole circuit comprising an input terminal T3, an output terminal T4, and a through pole conductor connected in series between the input terminal T3 and the output terminal T4; the input terminal T1 and the input terminal T3 are respectively connected with a power supply, the output terminal T2 and the output terminal T4 are respectively connected with a Load, and the first signal detection device V1 is connected between the first signal terminal ST1 and the input terminal T3; the signal detection system further includes a second signal detection device connected between the second signal terminal ST2 and the input terminal T3.
The utility model discloses a circuit breaker, it is including the pole circuit and the first signal subassembly that open circuit, the pole circuit that opens circuit includes main contact mechanism, first signal subassembly includes first signal terminal ST1 and auxiliary contact mechanism, first signal terminal ST1 is connected with the output terminal T2 of the pole circuit that opens circuit through auxiliary contact mechanism, main contact mechanism is opposite with the open action with the closure of auxiliary contact mechanism, operating device OM drive main contact mechanism is closed and the disconnection of auxiliary contact mechanism promptly, perhaps operating device OM drive main contact mechanism disconnection or auxiliary contact mechanism are closed, whether the fusion welding of main contact mechanism is judged to the first signal terminal of accessible. Furthermore, the utility model discloses the circuit breaker can also set up the second signal subassembly, and the second signal subassembly includes that second signal terminal ST2 is connected with output terminal T2, and the disconnection and the closed state of main contact mechanism are judged to accessible second signal terminal ST 2.
The utility model discloses a power distribution system, it includes Load is connected to the output of circuit breaker, and the input of circuit breaker is connected, and first signal terminal is connected with the output terminal ST2 that opens circuit the utmost point for power distribution system's assembling process is more reliable, safer.
The utility model discloses a signal detection system, it includes distribution system and first signal detection device V1, first signal detection device V1 obtains output signal from first signal terminal in order to judge whether circuit breaker main contact mechanism welds; in addition, a second signal assembly can be arranged in the circuit breaker, and a second signal detection device V2 in the signal detection system can acquire an output signal from a second signal terminal ST2 to judge the opening and closing states of the main contact mechanism of the circuit breaker.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the circuit breaker of the present invention, the circuit breaker is in a closing state;
fig. 2 is a schematic structural diagram of a first embodiment of the circuit breaker of the present invention, the circuit breaker is in an open state;
fig. 3 is a schematic structural view of a first embodiment of the circuit breaker of the present invention, with the main contact mechanism fusion welded;
fig. 4 is a schematic structural diagram of a second embodiment of the circuit breaker of the present invention, the circuit breaker is in an open state;
fig. 5 is a schematic structural diagram of a third embodiment of the circuit breaker of the present invention, wherein the circuit breaker is in an open state;
fig. 6 is a schematic structural diagram of the power distribution system of the present invention;
fig. 7 is a schematic structural diagram of the signal detection system of the present invention.
Detailed Description
The following further describes embodiments of the circuit breaker, the power distribution system including the circuit breaker, and the signal detection system including the power distribution system according to the present invention with reference to the embodiments shown in fig. 1 to 7. The circuit breaker, the power distribution system, and the signal detection device of the present invention are not limited to the description of the following embodiments.
The utility model discloses circuit breaker includes circuit breaker pole circuit and operating device OM, and circuit breaker pole circuit includes input terminal T1, output terminal T2 and concatenates the main contact mechanism between input terminal T1 and output terminal T2, and main contact mechanism includes active contact MC1 and main static contact SC1 that the cooperation was used; the circuit breaker further comprises a first signal assembly, the first signal assembly comprises a first signal terminal ST1 and an auxiliary contact mechanism, the auxiliary contact mechanism comprises an auxiliary moving contact MC2 and an auxiliary static contact SC2 which are matched with each other, and the first signal terminal ST1 is connected with an output terminal T2 through the auxiliary contact mechanism; the operating mechanism OM is in driving fit with the main contact mechanism and the auxiliary contact mechanism respectively, and drives the main contact mechanism to be closed and the auxiliary contact mechanism to be opened or drives the main contact mechanism to be opened and the auxiliary contact mechanism to be closed; the first signal terminal ST1 is used to determine whether the main contact mechanism is welded. The utility model discloses circuit breaker, its first signal terminal are used for judging whether fusion welding of main contact mechanism, and the user of being convenient for in time discovers the fusion welding problem of circuit breaker and in time handles, are favorable to improving user's power consumption security.
Preferably, after the circuit breaker performs the opening operation, it is determined that the main contact mechanism is welded if the first signal terminal ST1 outputs a signal, and it is determined that the main contact mechanism is not welded if the first signal terminal ST1 does not output a signal.
Preferably, the auxiliary contact mechanism is a microswitch.
The circuit breaker of the present invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1 and 2, a first embodiment of the circuit breaker of the present invention is disclosed, which comprises a circuit breaker pole circuit, an operating mechanism OM and a first signal assembly; the circuit breaker pole circuit includes an input terminal T1, an output terminal T2, and a main contact mechanism connected in series between the input terminal T1 and the output terminal T2; the main contact mechanism comprises a driving contact MC1 and a main static contact SC1 which are matched for use, wherein the driving contact MC1 is connected with an output terminal T2, and the main static contact SC1 is connected with an input terminal T1; the operating mechanism OM is in driving fit with the main contact mechanism and the auxiliary contact mechanism, and the closing and opening actions of the main contact mechanism and the auxiliary contact mechanism are opposite.
Preferably, as shown in fig. 1, when the circuit breaker of the present invention is switched on, the operating mechanism OM drives the main contact mechanism to close and drives the auxiliary contact mechanism to open; as shown in fig. 2, the utility model discloses during circuit breaker tripping, operating device OM drive main contact mechanism breaks off and drives the auxiliary contact mechanism closure.
It should be noted that the operating mechanism OM may directly drive the auxiliary contact mechanism to act, or may indirectly drive the auxiliary contact mechanism to act, specifically: and the operating mechanism OM drives the main contact mechanism to act and then drives the auxiliary contact mechanism to act through the active contact MC1 in the main contact mechanism. Further, the driving end of the auxiliary contact mechanism is located on the moving path of the operating mechanism OM or the active contact MC1 when the circuit breaker is switched on or switched off.
It should be noted that the utility model discloses the circuit breaker can also be: the active contact MC1 is connected to the input terminal T1 and the main stationary contact SC1 is connected to the output terminal T2; the input terminal T1 is used for connecting a power supply, the output terminal T2 is used for connecting a Load, and the main contact mechanism is used for connecting or disconnecting a circuit between the power supply and the Load.
Preferably, as shown in fig. 1 and 2, the input terminal T1, the main contact mechanism, the auxiliary contact mechanism, and the first signal terminal ST1 are connected in series to form a first signal branch, which is a part of a first signal detection circuit, and a signal detection device externally connected to the circuit breaker can obtain a signal from the first signal terminal ST 1. Further, as shown in fig. 1 and 2, the first signal assembly further includes a current limiting resistor R1, the first signal terminal ST1 is connected in series with the auxiliary contact mechanism through a current limiting resistor R1, and the current limiting resistor R1 is used for limiting the magnitude of the current flowing through the first signal assembly, so as to prevent the current from being too large and burning or damaging a signal detection device externally connected to a circuit breaker connected to the first signal terminal ST 1.
Preferably, the resistance value of the current limiting resistor R1 is larger than or equal to 1k omega.
Preferably, the auxiliary contact mechanism is a microswitch.
The following is a specific principle of the first signal terminal ST1 for determining whether the main contact mechanism is welded:
as shown in fig. 2, the utility model discloses during the circuit breaker separating brake, main contact mechanism does not have the fusion welding, and active contact MC1 and main static contact SC1 can normally break off, and auxiliary contact mechanism is closed, and first signal terminal ST1 is not output signal this moment. As shown in fig. 3, the utility model discloses after the circuit breaker executed the separating brake operation, main contact mechanism fusion welding, the unable normal disconnection of main static contact SC1 of active contact MC1 still had the electricity to be connected, and auxiliary contact mechanism is closed, and first signal terminal ST1 output signal this moment can this judge main contact mechanism fusion welding. That is to say, the utility model discloses after the circuit breaker carried out the separating brake operation, if first signal terminal ST1 output signal then judge the main contact mechanism fusion welding; if the first signal terminal ST1 has no signal output, it is determined that the main contact mechanism is not welded.
As shown in fig. 4, the second embodiment of the circuit breaker of the present invention is disclosed.
The circuit breaker of the second embodiment is different from the circuit breaker of the first embodiment in that: the circuit breaker of the second embodiment further includes a second signal assembly including a second signal terminal ST2, the second signal terminal ST2 being connected to the output terminal T2, the second signal terminal ST2 being used to determine the closed and open states of the main contact mechanism.
Preferably, as shown in fig. 4, the input terminal T1, the main contact mechanism, and the second signal terminal ST2 are connected in series to form a second signal branch, which is a part of a second signal detection circuit, and a signal detection device externally connected to the circuit breaker can obtain a signal from the first signal terminal ST 2. Further, as shown in fig. 4, the second signal component further includes a current limiting resistor R2, the second signal terminal ST2 is connected to the output terminal T2 through a current limiting resistor R2, and the current limiting resistor R2 is used to limit the magnitude of the current flowing through the first signal component, so as to avoid the current from burning or damaging a signal detection device externally connected to the circuit breaker connected to the second signal terminal ST 1.
Preferably, the resistance of the current limiting resistor R2 is larger than or equal to 1k omega.
The following is a principle of the second signal terminal ST2 for determining the closed and open states of the main contact mechanism:
the utility model discloses when the circuit breaker was closed a floodgate, main contact mechanism was closed, second signal terminal ST2 output signal.
As shown in fig. 4, the utility model discloses during the circuit breaker separating brake, main contact mechanism breaks off, and second signal terminal ST2 does not have signal output.
That is, if the second signal terminal ST2 outputs a signal, it is determined that the main contact mechanism is closed; when the second signal terminal ST2 has no signal output, it is determined that the main contact mechanism is open.
Preferably, the second signal terminal ST2 can be used in cooperation with the first signal terminal ST2 to determine the closed and open states of the main contact mechanism, specifically: when the circuit breaker is switched on, the main contact mechanism is closed, the auxiliary contact mechanism is opened, at the moment, the first signal terminal ST1 has no signal output, and the second signal terminal ST2 outputs signals; that is, if no signal is output from the first signal terminal ST1 and a signal is output from the second signal terminal ST2, the main contact mechanism is closed. As shown in fig. 4, when the circuit breaker of the present invention is opened, if the main contact mechanism can be normally opened without fusion welding, the auxiliary contact mechanism is closed, and at this time, the first signal terminal ST1 has no signal output, and the second signal terminal has no signal ST2 output; that is, if no signal is output from either the first signal terminal ST1 or the second signal terminal ST2, the main contact mechanism is opened.
Preferably, the second signal terminal ST2 may be used in cooperation with the first signal terminal ST1 to determine whether the main contact mechanism is welded, specifically: when the circuit breaker is opened, if the main contact mechanism can not be normally disconnected by fusion welding, the electric connection still exists, the auxiliary contact mechanism is closed, and at the moment, the first signal terminal ST1 and the second signal terminal ST2 both output signals; that is, the utility model discloses after the circuit breaker carried out the separating brake operation, if first signal terminal ST1 and second signal terminal ST2 when all output signal, judge the fusion welding of main contact mechanism.
It should be pointed out, the utility model discloses an among the circuit breaker, its pole circuit that opens circuit, first signal subassembly, second signal subassembly use for a one-to-one cooperation, consequently the utility model discloses the circuit breaker is not limited to including a pole circuit that opens circuit, can be in order to include a plurality of pole circuits that open circuit, still includes the first signal subassembly and the second signal subassembly that use with every pole circuit cooperation that opens circuit respectively, that is to say, only through the improvement that the increase and decrease pole circuit that opens circuit, first signal subassembly, second signal subassembly's figure goes on the circuit breaker, should fall in the protection scope of this application equally.
As shown in fig. 5, the third embodiment of the circuit breaker of the present invention is shown.
The circuit breaker of the third embodiment is different from the circuit breaker of the second embodiment in that: the circuit breaker of the third embodiment further comprises a through pole circuit comprising an input terminal T3, an output terminal T4, and a through pole conductor connected in series between the input terminal T3 and the output terminal T4. Specifically, the input end of the circuit breaker of the present invention includes an input terminal T1 and an input terminal T3, and the output end of the circuit breaker includes an output terminal T2 and an output terminal T4; the input terminal T1 and the input terminal T3 are used for connecting a power supply, the output terminal T2 and the output terminal T4 are used for connecting a Load, and the main contact mechanism is used for connecting or disconnecting a circuit between the power supply and the Load.
As shown in fig. 6, the utility model also discloses a distribution system including the circuit breaker.
As shown in fig. 6, the utility model discloses distribution system circuit breaker, power and Load, the input and the output of circuit breaker link to each other with power, Load respectively.
Specifically, as shown in fig. 6, the circuit breaker of the power distribution system of the present invention has the same structure as the circuit breaker of the third embodiment, the output terminal T2 and the output terminal T4 of the circuit breaker are respectively connected to two ends of the Load, the input terminal T1 and the input terminal T3 of the circuit breaker are respectively connected to two ends of the power supply, and the main contact mechanism in the circuit breaker is used for connecting and disconnecting the circuit between the power supply and the Load. Further, as shown in fig. 6, the power supply is a direct current power supply DC or an alternating current power supply AC; when the power supply is an alternating current power supply AC, the input terminal T1 of the open pole circuit is connected with the phase pole of the alternating current power supply AC, and the input terminal T3 of the through pole circuit is connected with the N pole of the alternating current power supply AC.
The utility model discloses distribution system, the output terminal T2 and the output terminal T4 of its circuit breaker are connected with the both ends of Load respectively, and the input terminal T1 and the input terminal T3 of circuit breaker are connected with the both ends of power respectively, and first signal terminal ST1 and second signal terminal ST2 all are connected with the output terminal T2 of circuit breaker the utility model discloses in distribution system's the assembling process, be being connected the in-process with circuit breaker and power promptly, because the circuit breaker is in the separating brake state, first signal terminal ST1 can not take the electric potential with second signal terminal ST2 for distribution system's assembling process is more reliable, safer.
It should be noted that the utility model discloses distribution system's circuit breaker also can with the utility model discloses the circuit breaker structure of second embodiment is the same, and at this moment, the one end that the looks utmost point or the positive pole of power passed through circuit breaker and Load links to each other, and the N utmost point or the negative pole of power then link to each other with the Load other end through the wire, and need not to set up direct utmost point circuit in the circuit breaker. Or, the utility model discloses distribution system also can use the utility model discloses the circuit breaker of first embodiment, this moment, the one end that the looks utmost point or the positive pole of power passed through circuit breaker and Load links to each other, and the N utmost point or the negative pole of power then link to each other with the Load other end through the wire, and need not to set up direct utmost point circuit in the circuit breaker, and the circuit breaker that only this first embodiment lacks main contact mechanism and closes and off-state detects.
As shown in fig. 7, the utility model also discloses a signal detection system including distribution system.
As shown in fig. 7, the signal detecting system of the present invention includes a power distribution system, a first signal detecting device V1 and a second signal detecting device V2; the first signal detection device V1 is connected with a first signal terminal ST1 of the circuit breaker, the second signal detection device V2 is connected with a second signal terminal ST2 of the circuit breaker, the first signal detection device V1 acquires signals from the first signal terminal ST1 to judge whether the main contact mechanism of the circuit breaker is welded or not, and the second signal detection device V2 acquires signals from the second signal terminal ST2 to judge the closed state and the open state of the main contact mechanism of the circuit breaker.
Specifically, as shown in fig. 7, the first signal detection device V1 is connected between the first signal terminal ST1 and the input terminal T3 of the through pole circuit, and the second signal detection device V2 is connected between the second signal terminal ST2 and the input terminal T3 of the through pole circuit; in this way, the power supply, the main contact mechanism, the auxiliary contact mechanism, the first signal terminal ST1 and the first signal detection device V1 may form a first signal detection loop, and the first signal detection device V1 is connected in parallel with the Load; the power supply, the main contact mechanism, the second signal terminal ST2, and the second signal detecting device V2 may form a second signal detecting circuit, and the second signal detecting device V2 is connected in parallel with the Load.
Preferably, the first signal detecting device V1 and the second signal detecting device V2 are voltage signal detecting devices or current signal detecting devices.
It should be noted that the utility model discloses signal detection system also can use the utility model discloses the circuit breaker of first embodiment or second embodiment only needs to connect in parallel first signal detection device V1, second signal detection device V2 and Load can.
The principle of the first signal detection device V1 for determining whether the main contact mechanism is welded or not and the principle of the second signal detection device V2 for determining the closed and open states of the main contact mechanism are the same as those described above, and are not described again.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (16)
1. A circuit breaker comprises a circuit breaker pole circuit and an operating mechanism OM, wherein the circuit breaker pole circuit comprises an input terminal T1, an output terminal T2 and a main contact mechanism connected between the input terminal T1 and the output terminal T2 in series, and the main contact mechanism comprises a main contact MC1 and a main static contact SC1 which are matched; the method is characterized in that: the circuit breaker further comprises a first signal assembly, the first signal assembly comprises a first signal terminal ST1 and an auxiliary contact mechanism, the auxiliary contact mechanism comprises an auxiliary moving contact MC2 and an auxiliary static contact SC2 which are matched with each other, and the first signal terminal ST1 is connected with an output terminal T2 through the auxiliary contact mechanism; the operating mechanism OM is in driving fit with the main contact mechanism and the auxiliary contact mechanism respectively, and drives the main contact mechanism to be closed and the auxiliary contact mechanism to be opened or drives the main contact mechanism to be opened and the auxiliary contact mechanism to be closed; the first signal terminal ST1 is used to determine whether the main contact mechanism is welded.
2. The circuit breaker of claim 1, wherein: after the breaker performs the opening operation, if the first signal terminal ST1 outputs a signal, the welding of the main contact mechanism is judged, and if the first signal terminal ST1 does not output a signal, the welding of the main contact mechanism is judged.
3. The circuit breaker of claim 1, wherein: the auxiliary contact mechanism is driven to close/open by an operating mechanism OM or an active contact MC 1.
4. The circuit breaker of claim 3, wherein: the driving end of the auxiliary contact mechanism is positioned on the moving path of the operating mechanism OM or the active contact MC1 when the circuit breaker is switched on or switched off.
5. The circuit breaker of claim 1, wherein: when the circuit breaker is switched on, the operating mechanism OM drives the main contact mechanism to be closed and the auxiliary contact mechanism to be opened; when the circuit breaker is opened, the operating mechanism OM drives the main contact mechanism to be disconnected and the auxiliary contact mechanism to be closed.
6. The circuit breaker of claim 3, wherein: the auxiliary contact mechanism is a microswitch.
7. The circuit breaker of claim 1, wherein: the first signal assembly further includes a current limiting resistor R1, and the first signal terminal ST1 is connected in series with the auxiliary contact mechanism through the current limiting resistor R1.
8. The circuit breaker of claim 1, wherein: the circuit breaker further comprises a second signal assembly, wherein the second signal assembly comprises a second signal terminal ST2, the second signal terminal ST2 is connected with the output terminal T2, and the second signal terminal ST2 is used for judging the closed state and the open state of the main contact mechanism.
9. The circuit breaker of claim 8, wherein: the second signal assembly further includes a current limiting resistor R2, and the second signal terminal ST2 is connected to the output terminal T2 through the current limiting resistor R2.
10. The circuit breaker of claim 8, wherein: after the circuit breaker performs the opening operation, the welding of the main contact mechanism is judged if the first signal terminal ST1 outputs a signal or the signals of the first signal terminal ST1 and the second signal terminal ST2 are both output, the closing of the main contact mechanism is judged if the first signal terminal ST1 outputs no signal and the second signal terminal ST2 outputs no signal, and the opening of the main contact mechanism is judged if the first signal terminal ST1 outputs no signal and the second signal terminal outputs no signal ST 2.
11. The circuit breaker of claim 1, wherein: the circuit breaker also includes a through pole circuit including an input terminal T3, an output terminal T4, and a through pole conductor connected in series between the input terminal T3 and the output terminal T4.
12. An electrical distribution system comprising a circuit breaker according to any one of claims 1 to 11; the power distribution system also comprises a power supply and a Load which are respectively connected with the input end and the output end of the circuit breaker; the power supply is a direct current power supply DC or an alternating current power supply AC.
13. The power distribution system of claim 12, wherein: the circuit breaker further comprises a shoot-through pole circuit comprising an input terminal T3, an output terminal T4, and a shoot-through pole conductor connected in series between the input terminal T3 and the output terminal T4; the power supply is connected to the input terminal T1 and the input terminal T3, respectively, and the Load is connected to the output terminal T2 and the output terminal T4, respectively.
14. A signal detection system comprising the power distribution system of claim 12; the signal detection system also comprises a first signal detection device V1, and the first signal detection device V1 is connected with a first signal terminal ST1 to judge whether the main contact mechanism of the circuit breaker is welded or not.
15. The signal detection system of claim 14, wherein: the circuit breaker further comprises a second signal assembly, wherein the second signal assembly comprises a second signal terminal ST2, and the second signal terminal ST2 is connected with the output terminal T2;
the signal detection system further comprises a second signal detection device V2, the second signal detection device V2 being connected to the second signal terminal ST2 for determining the closed and open state of the main contact mechanism.
16. The signal detection system according to claim 14 or 15, wherein: the circuit breaker further comprises a shoot-through pole circuit comprising an input terminal T3, an output terminal T4, and a shoot-through pole conductor connected in series between the input terminal T3 and the output terminal T4; the input terminal T1 and the input terminal T3 are respectively connected with a power supply, the output terminal T2 and the output terminal T4 are respectively connected with a Load, and the first signal detection device V1 is connected between the first signal terminal ST1 and the input terminal T3; the signal detection system further includes a second signal detection device connected between the second signal terminal ST2 and the input terminal T3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021609894.1U CN212695094U (en) | 2020-08-05 | 2020-08-05 | Circuit breakers, distribution systems and signal detection systems |
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| CN202021609894.1U CN212695094U (en) | 2020-08-05 | 2020-08-05 | Circuit breakers, distribution systems and signal detection systems |
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| CN212695094U true CN212695094U (en) | 2021-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952129A (en) * | 2020-08-05 | 2020-11-17 | 浙江正泰电器股份有限公司 | Circuit breakers, distribution systems and signal detection systems |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952129A (en) * | 2020-08-05 | 2020-11-17 | 浙江正泰电器股份有限公司 | Circuit breakers, distribution systems and signal detection systems |
| CN111952129B (en) * | 2020-08-05 | 2025-07-08 | 浙江正泰电器股份有限公司 | Circuit breaker, power distribution system and signal detection system |
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