CN211404423U - Circuit breaker - Google Patents

Abstract

The utility model relates to a can realize the circuit breaker of local demonstration and the long-range conveying of dropout state simultaneously. The circuit breaker includes: the tripping state detection device is used for detecting the tripping state of the circuit breaker to generate a tripping signal; the tripping state indicating device is connected to the tripping state detecting device and used for receiving the tripping signal from the tripping state detecting device and locally indicating the tripping state; and the communication device is connected to the tripping state detection device and used for receiving the tripping signal from the tripping state detection device and converting the tripping signal into a remote communication signal to be sent to a remote device.

Description

Circuit breaker

Technical Field

The utility model relates to a circuit breaker especially relates to circuit breaker with dropout state indication.

Background

A circuit breaker is an important electrical device that can open and close an electric circuit and can automatically open the electric circuit in the event of an abnormality in the electric circuit. The automatic breaking function of the circuit breaker can be realized through a release in the circuit breaker, and the tripping action of the release can cause the tripping state of the circuit breaker to change.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a can realize circuit breaker of local instruction of dropout state and teletransmission simultaneously.

According to the utility model discloses an embodiment provides a circuit breaker, include: the tripping state detection device is used for detecting the tripping state of the circuit breaker to generate a tripping signal; the tripping state indicating device is connected to the tripping state detecting device and used for receiving the tripping signal from the tripping state detecting device and locally indicating the tripping state; and the communication device is connected to the tripping state detection device and used for receiving the tripping signal from the tripping state detection device and converting the tripping signal into a remote communication signal to be sent to a remote device.

Optionally, the communication device includes a first signal converter and a second signal converter, the first signal converter is connected to the trip state detection device and is configured to receive the trip signal from the trip state detection device and convert the trip signal into a local communication signal, and the second signal converter is connected to the first signal converter and is configured to receive the local communication signal from the first signal converter and convert the local communication signal into the remote communication signal.

Optionally, the trip state detecting device includes a first switch, the first switch includes a first trip signal port and a second trip signal port for providing the trip signal, the first trip signal port is connected to the trip state indicating device, and the second trip signal port is connected to the first signal converter.

Optionally, the first switch further comprises a first local communication signal receiving port connected to the first signal converter for receiving the local communication signal from the first signal converter, the trip state detection apparatus further comprises a second switch,

the second switch includes a local communication signal transmission port, and the local communication signal transmission port is configured to transmit the local communication signal received by the local communication signal reception port to the second signal converter.

Optionally, the circuit breaker includes a first cable and a second cable, the trip state indicating device includes a third wire connector and a fourth wire connector, the third wire connector includes a trip signal receiving port and a second local communication signal receiving port, the first cable includes a trip signal conductor and a local communication signal conductor, a first end of the trip signal conductor is connected to the first trip signal port of the first wire connector, a second end of the trip signal conductor is connected to the trip signal receiving port of the third wire connector of the trip state indicating device, a first end of the local communication signal conductor is connected to the local communication signal transmitting port of the second wire connector, a second end of the local communication signal conductor is connected to the second local communication signal receiving port of the third wire connector of the trip state indicating device, and a first end of the second cable is connected to the fourth wire connector of the trip state indicating device, the second end of the second cable is connected to the second signal converter, and is used for sending the local communication signal received by the second local communication signal receiving port to the second signal converter.

Optionally, the circuit breaker further includes a dc power supply, the dc power supply is connected to the second signal converter to supply power to the second signal converter, and the dc power supply further supplies power to the trip state detection device, the trip state indication device, and the first signal converter through the first cable and the second cable.

Optionally, the trip state indicating device includes a trip state indicating lamp and an external interface for indicating the trip state.

Optionally, the trip state indicating device further includes a voltage isolating circuit, configured to isolate the voltage of the trip state detecting device from the voltage of the external interface indicated by the trip state.

Optionally, the trip state indication external interface has two ports, and the two ports are connected in series with an external power supply and an external indicator light.

Optionally, the trip state detection device includes a first resistor, a second resistor and a key switch, a first end of the first resistor is connected to a first pole of the power supply, a second end of the first resistor is connected to a first end of the second resistor as an output end of the trip signal, a second end of the second resistor is connected to a second pole of the power supply, the key switch is connected in parallel with the first resistor, and a key of the key switch is connected to a release moving mechanism of the circuit breaker through a mechanical structure.

Drawings

These and/or other aspects, features and advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic circuit diagram of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a trip state detection apparatus according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a trip state indicating device according to an embodiment of the present invention;

fig. 4 shows a schematic circuit diagram of a circuit breaker according to an embodiment of the present invention;

fig. 5 shows a schematic circuit diagram of a circuit breaker according to an embodiment of the present invention;

fig. 6 shows a schematic circuit diagram of a circuit breaker according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a trip state detection device and a first cable according to an embodiment of the present invention;

fig. 8 shows a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to exemplary embodiments thereof. The invention is not limited to the embodiments described herein, however, which may be embodied in many different forms. The described embodiments are intended only to be exhaustive and complete, and to fully convey the concept of the invention to those skilled in the art. Features of the various embodiments described may be combined with each other or substituted for each other unless expressly excluded or otherwise excluded in context.

In the embodiments of the present invention, unless otherwise specifically stated, "connected" does not mean that "directly connected" or "directly in contact" is necessary, but only needs to be electrically connected.

The tripping state of the circuit breaker is important information of the circuit breaker, and has important significance for monitoring and maintaining the circuit breaker. Based on this, the utility model provides a can realize the circuit breaker of local instruction and the long-range conveying of circuit breaker dropout state simultaneously.

Fig. 1 shows a schematic diagram of a related circuit structure of a circuit breaker 100 according to an embodiment of the present invention. As shown in fig. 1, the circuit breaker 100 may include a trip state detection device 101, a trip state indication device 102, and a communication device 103, wherein the trip state indication device 102 and the communication device 103 are respectively connected to the trip state detection device 101. The trip state detection device 101 is used for detecting the trip state of the circuit breaker to generate a trip signal. The trip state indicating device 102 is used for receiving the trip signal from the trip state detecting device and locally indicating the trip state. The communication device 103 is used for receiving the trip signal from the trip state detection device and converting the trip signal into a remote communication signal, such as a communication signal of a Modbus, so as to send the remote communication signal to a remote device.

According to the utility model discloses circuit breaker 100's dropout state can be used for local control through the local instruction of dropout state indicating device 102 to can convert the telecommunication signal that is fit for telecommunication into through communication device 103 and send the remote equipment and be used for remote monitoring, thereby make things convenient for circuit system maintainer's control and maintenance greatly. Note that, in the present invention, "local" indicates a range that maintenance personnel can collectively check the circuit breaker when checking the circuit breaker in the field, and for example, the local "indicates a range that maintenance personnel can physically directly connect to the main body of the circuit breaker and display the range through an indicator light. "remote" means a monitoring center that is not in the same viewing area as the circuit breaker, e.g., located in a different room or a more remote location.

The tripping state of the circuit breaker is represented by the mechanical state of the tripper, and when the circuit breaker trips, the mechanical state of the tripper changes, so the tripping state detection device 101 can adopt various suitable detection schemes from the mechanical state to an electrical signal to detect the tripping state and generate a tripping signal. As an implementation manner, fig. 2 shows a schematic circuit structure diagram of the trip state detection apparatus 101 according to an embodiment of the present invention. The trip state detection device 101 includes a first resistor R1, a second resistor R2, and a key switch S. The first end of the first resistor R1 is connected with a first pole V of a power supply, the second end of the first resistor R1 is connected with the first end of the second resistor R2 to serve as an output end SD of the trip signal, and the second end of the second resistor R2 is connected with a second pole GND of the power supply. The key switch S is connected in parallel with the first resistor R1, and its key is connected with a trip mechanism of the circuit breaker through a mechanical structure. Because the key of the key switch S is connected to the moving mechanism of the release, when the release movement occurs, the key switch S is pressed down, which causes the output terminal SD to be short-circuited with the first pole V of the power supply, so that the voltage of the release signal output terminal SD is equal to V. In contrast, when the circuit breaker is not tripped, the key switch S is not pressed, the switch is opened, and thus the voltage of the trip signal output terminal SD is obtained by dividing the voltage by the resistors R1 and R2, specifically, equal to V · R2/(R1+ R2), for example, when R1 is equal to R2, the voltage of the trip signal output terminal SD is V/2. Therefore, the trip state detection device 101 can detect the trip state of the circuit breaker and generate a trip signal. Note that, in the example of fig. 2, the first pole of the power supply is set to the V-voltage pole, and the second pole of the power supply is set to the GND pole; obviously, it is also possible to set the second pole of the power supply as the V-voltage pole and the first pole of the power supply as the GND pole, i.e. to swap the V-voltage pole and the GND pole. In the latter setting, when no trip occurs, the voltage at the trip signal output terminal SD is V · R1/(R1+ R2), and when a trip occurs, the voltage at the trip signal output terminal SD is 0.

According to the embodiment of the present invention, the trip state indicating device 102 can adopt various suitable modes to locally indicate the trip state after acquiring the trip signal, for example, the indicating lamp or the buzzer controlled by the trip signal indicates, and in necessary cases, the trip state indicating device 102 can include a suitable voltage conversion circuit to convert the voltage obtained from the trip signal output terminal SD into a suitable voltage capable of controlling the indicating lamp to be turned on or turned off or controlling the buzzer to sound or not, and there are various available voltage conversion circuits in the prior art, such as a triode circuit, and the description is not repeated here.

In one embodiment, the trip status indicator 102 may include both a built-in trip status indicator light and a trip status indicating external interface. A built-in trip status indicator light is used for standardized trip status indication. The trip state indication external interface may provide a control signal to the user indicating the trip state for a user-customized trip state indication, e.g., the user may wish to alarm via a buzzer or flashing lights. Fig. 3 shows a schematic structural diagram of the trip state indicating device 102 according to an embodiment of the present invention. Reference symbol a in fig. 3 denotes a trip state indication external interface, and reference symbol B denotes a trip state indication lamp. For the trip status indication external interface a, it can be connected with an external indicator light L, and if necessary, can be connected with an external power supply P in series. For the trip status indicator light B, for example, it indicates that the circuit breaker is in a non-trip state (closing or opening) when it is displayed green, and indicates a trip state when it is displayed red. Meanwhile, the tripping state indicating device comprising the built-in tripping state indicating lamp and the tripping state indicating external interface can simultaneously meet the general standardized requirement of users on tripping state indication and the personalized special requirement of users, and the applicability of the equipment is improved.

Optionally, the trip state indicating device 102 may further include a voltage isolation circuit, configured to isolate the voltage of the trip state detecting device from the voltage of the external interface indicated by the trip state. The tripping state detection device is close to the high-voltage power of the circuit breaker breaking circuit, the high-voltage power can be brought when a fault occurs, the high-voltage power can be transmitted to the tripping state indicating device and the tripping state indicating external interface through the connection between the tripping state detection device and the tripping state indicating device, and therefore damage and even injury to a human body can be caused to an external indicator of a user. Therefore, according to the utility model discloses an embodiment can set up voltage isolation circuit in trip state indicating device for keep apart the voltage of trip state detection device and the voltage that the external interface was instructed to the trip state. For example, the voltage isolation circuit may be implemented by a relay, and the on/off of the relay switch is controlled by a trip signal input by the trip state detection device. The two ends of the relay switch are connected to the two ports of the external interface indicated by the tripping state, so that the tripping signal input by the tripping state detection device can control the connection and disconnection of the two ports of the external interface indicated by the tripping state, and if the external power supply P and the indicator light L which are connected in series are connected to the two ports of the external interface indicated by the tripping state, as shown in fig. 3, the on and off of the indicator light L can be controlled through the connection and disconnection of the two ports. In addition, due to the intervention of the relay, the voltages of the two ports of the tripping state indication external interface are isolated from the tripping signal voltage and the power supply voltage of the tripping state detection device, so that the tripping state indication external interface is protected from possible high voltage influence of the tripping state detection device.

According to an embodiment of the present invention, the communication device may include a first signal converter and a second signal converter. Fig. 4 shows a schematic diagram of a related circuit structure of a circuit breaker 400 according to an embodiment of the present invention. The circuit breaker 400 may include a trip state detection device 401, a trip state indication device 402, and a communication device 403. The trip state detection means 401 and the trip state indicating means 402 are similar to the trip state detection means 101 and the trip state indicating means 102, and the above description about the trip state detection means 101 and the trip state indicating means 102 is equally applicable to the trip state detection means 401 and the trip state indicating means 402. The communication device 403 includes a first signal converter 4031 and a second signal converter 4032. The first signal converter 4031 is connected to the trip state detection device 401, and is configured to receive the trip signal from the trip state detection device and convert the trip signal into a local communication signal. The second signal converter 4032 is coupled to the first signal converter 4031 for receiving the local communication signal from the first signal converter 4031 and converting the local communication signal to the remote communication signal. As explained above, the connection between the second signal converter 4032 and the first signal converter 4031 is not necessarily a "direct connection", which can be switched, for example, by the trip status detection means 401 and/or the trip status indication means 402. According to the present embodiment, the communication device 403 first converts the trip signal into a local communication signal suitable for local transmission, for example, a CAN (controller area network) based communication signal, by the first signal converter 4031, and then converts the local communication signal into a remote communication signal suitable for remote transmission, for example, a Modbus based communication signal, by the second signal converter 4032. The hierarchical communication mode enables the collection and transmission of signals to be more convenient and has stronger expandability.

Optionally, in order to realize signal transmission, the trip state detection device may include a first switch, the first switch includes a first trip signal port and a second trip signal port for providing the trip signal, the first trip signal port is connected to the trip state indicating device, and the second trip signal port is connected to the first signal converter. Further optionally, the first switch further includes a first local communication signal receiving port, the first local communication signal receiving port is connected to the first signal converter, and is configured to receive the local communication signal from the first signal converter, the trip state detection apparatus further includes a second switch, the second switch includes a local communication signal sending port, and the local communication signal sending port is configured to send the local communication signal received by the local communication signal receiving port to the second signal converter.

Fig. 5 shows a schematic diagram of a related circuit structure of a circuit breaker 500 including the wire connector and the port thereof according to an embodiment of the present invention. The circuit breaker 500 includes a trip state detection device 501, a trip state indication device 502, and a communication device 503, and the communication device 503 includes a first signal converter 5031 and a second signal converter 5032. The above description about the trip state detection means 101, the trip state indication means 102, the communication means 103/403, the first signal converter 4031 and the second signal converter 4032 also applies to the trip state detection means 501, the trip state indication means 502, the communication means 503, the first signal converter 5031 and the second signal converter 5032. The trip state detection apparatus 501 includes a first connector 5011 and a second connector 5012, the first connector 5011 may be an RJ45 connector, for example, and the second connector 5012 may be a knob wire crimper, for example, which may connect wires more firmly. The first switch 5011 includes a first trip signal port a for providing the trip signal, a second trip signal port b, and a first local communication signal receiving port c. The first trip signal port a is connected to the trip state indicating device 502, and the second trip signal port b and the first local communication signal receiving port c are each connected to the first signal converter 5031. The first signal converter 5031 converts the trip signal received from the second trip signal port b into a local communication signal, and transmits the local communication signal to the first local communication signal receiving port c. The second switch 5012 includes a local communication signal transmitting port d, and the local communication signal transmitting port d is connected to the first local communication signal receiving port c to obtain a local communication signal and transmit the local communication signal to the second signal converter 5032. In other words, in the present embodiment, the first signal converter 5031 is connected to the second signal converter 5032 after being relayed by the trip state detection device 501, and of course, after being relayed by the trip state detection device 501, the signal can be relayed by the trip state indication device 502. It should be noted that, in the present embodiment, although each port of the connector is shown as one port, it may also represent a combination of a plurality of physical ports. For example, for the first local communication signal receiving port c and the local communication signal transmitting port d, the ports may be a combination of a plurality of physical ports depending on the local signal format used, for example, the ports may include two high and low physical ports when a CAN signal is used. In addition, the above-described connector may also include other ports, such as a power port, for passing power between the various components.

In the above embodiment, the first signal converter is connected to the second signal converter after being switched by the trip state detection device 501. Further, the first signal converter can be connected to the second signal converter through the tripping state indicating device after being relayed by the tripping state detecting device. In this case, the trip signal for the trip state indicating means and the local communication signal for the second signal converter can also be transmitted from the trip state detecting means with the same cable. For this reason, fig. 6 shows a schematic diagram of a related circuit structure of the circuit breaker 600 according to an embodiment of the present invention. The circuit breaker 600 includes a trip state detection apparatus 601, a trip state indication apparatus 602, and a communication apparatus 603, the communication apparatus 603 includes a first signal converter 6031 and a second signal converter 6032, and the trip state detection apparatus 601 includes a first wire connector 6011 and a second wire connector 6012. The above description about the trip state detecting device 101/401/501, the trip state indicating device 102/402/502, the communication device 103/403/503, the first signal converter 4031/5031, the second signal converter 4032/5032, the first wire connector 5011, and the second wire connector 5012 is equally applicable to the trip state detecting device 601, the trip state indicating device 602, the communication device 603, the first signal converter 6031, the second signal converter 6032, the first wire connector 6011, and the second wire connector 6012.

In the embodiment of fig. 6, the first wire connector 6011 includes a first trip signal port a for providing the trip signal, a second trip signal port b, and first local communication signal receiving ports c1 and c2, where the ports c1 and c2 are high and low signal terminals of a CAN signal, respectively. The first wire connector 6011 further includes power ports v and g, where v is a high voltage terminal and g is a low voltage terminal, e.g., g is a ground. The second switch 5012 includes local communication signal transmission ports d1 and d2 and power supply ports v and g. The trip state indicating device 602 includes a third and fourth wire connector 6021, 6022, which may be, for example, an RJ45 wire connector. The third wire connector 6021 includes a trip signal receiving port e and second local communication signal receiving ports f1 and f2, and includes power supply ports v and g. The fourth connector 6022 includes ports h1 and h2 and power supply ports v and g connected to the second local communication signal reception ports f1 and f2, respectively. In addition, the circuit breaker 600 further includes a first cable 604 and a second cable 605, the first cable 604 is used for connecting the trip state detection device 601 with the trip state indication device 602, the second cable 605 is used for connecting the trip state indication device 602 with the second signal converter 6032, wherein the first cable 604 includes a trip signal conductor TS and local communication signal conductors LS1 and LS2 and a conductor for conducting power, and the second cable 605 includes a conductor for transmitting a local communication signal and a conductor for conducting power.

The power ports v and g of all the components of the circuit breaker 600 are connected and connected to the signal converters 6031 and 6032 for sharing the power. For example, the circuit breaker 600 may further include a direct current power supply connected to the second signal converter 6032 to supply power thereto, and supply power to the trip state detecting means 601, the trip state indicating means 602, and the first signal converter 6031 through the first cable and the second cable. It should be noted that, of course, the power lines in the circuit breaker 600 do not have to be conducted through the power ports v and g, and may be conducted in other manners, such as separate power lines. In other words, in some embodiments, one or more of the above-described connectors may not include power ports v and g, and the corresponding cables may not include power conductors therein.

In fig. 6, a first trip signal port a is connected to a trip signal receiving port e of the third wire connector 6021 of the trip state indicating device 602 through a trip signal conductor TS, for transmitting a trip signal to the trip state indicating device 602. As shown, a first end of the trip signal conductor TS is connected to the first trip signal port a of the first wire connector 6011, and a second end of the trip signal conductor TS is connected to the trip signal receiving port e of the third wire connector 6021 of the trip state indicating device 602. The second trip signal port b is connected to the first signal converter 6031 for transmitting a trip signal to the first signal converter 6031. The first signal converter 6031 converts the trip signal received from the second trip signal port b into a local communication signal, and transmits to the first local communication signal reception ports c1 and c2 connected thereto. The first local communication signal receiving ports c1 and c2 are connected to the local communication signal transmitting ports d1 and d2 of the second switch 6012, respectively, for transmitting the received local communication signals to the local communication signal transmitting ports d1 and d 2. The local communication signal transmitting ports d1 and d2 are connected to the second local communication signal receiving ports f1 and f2 of the third switch 6021 of the trip state indicating apparatus 602 through the local communication signal conductors LS1 and LS2 of the first cable 604, respectively. As shown, first ends of the local communication signal conductors LS1 and LS2 are connected to the local communication signal transmitting ports d1 and d2 of the second switch 6012, and second ends of the local communication signal conductors LS1 and LS2 are connected to the second local communication signal receiving ports f1 and f2 of the third switch 6021 of the trip state indicating device 602. In this embodiment, the trip signal conductor TS, the local communication signal conductors LS1 and LS2, and the power conductor are disposed in the same cable 604, which makes the wiring cleaner and maintenance more convenient.

Fig. 7 is a schematic structural diagram of an example of a trip state detection device 701 and a first cable 704 suitable for a circuit breaker 600 according to an embodiment of the present invention. In fig. 7, the trip state detection apparatus 701 includes a first switch 7011 having one port connected to a trip signal conductor TS and the other ports connected to a first signal converter (not shown) through a conductor. The trip state detection device 701 further includes a second wire connector 7012, the second wire connector 7012 includes four ports, which are a power port v and a power port g, a local communication signal transmission port d2 and a local communication signal transmission port d1, from top to bottom, and are further labeled as "+", "-", "L" and "H" in this order on the trip state detection device 701. The four conductors connected to the second connector 7012 together with the trip signal conductor TS form a first cable 704 for connection to a third connector (not shown) of the trip status indicating device.

Returning to fig. 6, the ports h1 and h2 of the fourth wire connector 6022 are connected to the second local communication signal receiving ports f1 and f2, respectively, for transmitting the local communication signal to the fourth wire connector 6022, which in turn transmits the local communication signal to the second signal converter 6032 through the second cable 605 connected to the second signal converter 6032. As shown, a first end of the second cable 605 is connected to the fourth wire connector 6022 of the trip status indication apparatus, and a second end of the second cable 605 is connected to the second signal converter 6032, so as to transmit the local communication signal received by the second local communication signal receiving port 6022 to the second signal converter 6032. The second signal converter 6032 converts the local communication signals to remote communication signals for transmission to a remote device, such as to Modbus signals.

According to the above embodiment of the utility model, transmit local communication signal and tripping signal to a switch of tripping state indicating device through same root cable together, will transmit local communication signal to the second signal converter through another switch of tripping state indicating device, can realize the local demonstration and the long-range conveying of tripping state simultaneously, and compact structure is clean and tidy. In addition, the structure can easily realize products of different grades, is convenient for product upgrading and meets the requirements of different users. For example, for the circuit breaker in fig. 6, two levels of products can be easily implemented, one is a circuit breaker that supports both remote transmission of the trip state and local indication as shown in fig. 6, and the other is a circuit breaker that supports only remote transmission of the trip state and does not support local indication. For the latter, it is only necessary to omit the trip state indicating device 602 and the second cable 605 and to connect the second signal converter directly to the second switch 6012 of the trip state detecting device by using one cable including only the local communication signal conductors LS1 and LS2 and the power supply conductor instead of the first cable 604. Similarly, if upgrading from the latter product to the product shown in fig. 6, only the first cable 604, the trip state indicating device 602, and the second cable 605 need to be added, and the design of the trip state detecting device 601, the first signal converter 6031, and the second signal converter 6032 need not be changed.

Fig. 8 shows a schematic structural diagram of a circuit breaker 800 according to an embodiment of the present invention. As shown, the circuit breaker 800 includes a circuit breaker main body 806, the circuit breaker main body 806 has a release (not shown) therein, and a trip state detection device 801 and a first signal converter 8031 are embedded, and in order to more clearly illustrate the structures of the trip state detection device 801 and the first signal converter 8031, an enlarged example schematic diagram of these two components is shown in fig. 8, as shown in a dotted line. The circuit breaker 800 also includes a trip status indicating device 802, a second signal translator 8032, a first cable 804, and a second cable 805. The description of the components above with respect to fig. 6 applies equally to the components in fig. 8, unless otherwise noted. The trip state detection device 801 is connected to the trip state indicating device 802 through a first cable 804, the trip state indicating device 802 is connected to a second signal converter 8032 through a second cable 805, and the second signal converter converts the signal with the trip state information into a remote communication signal and transmits the remote communication signal to a remote device through a remote communication interface, for example, the second signal converter has a Modbus interface. An example of the first cable 804 and the second cable 805 is schematically shown in fig. 8, as indicated in the dashed boxes of reference numerals 804 and 805, for example, the second cable 805 may be an RJ45 connection cable, and the first cable 804 may be a simple change to an RJ45 connection cable, i.e. one end to be connected to the trip state detection apparatus 801 is detached for connection to the corresponding port, respectively. In the example of fig. 8, the circuit breaker 800 further includes a direct current power source P2 connected to the second signal converter 8032 for supplying power to the second signal converter 8032 and supplying power to the trip state detection apparatus 801, the trip state indication apparatus 802, and the first signal converter 8031 through the first cable 804 and the second cable 805. In addition, the trip state indicating device 802 includes, in addition to a built-in trip state indicator lamp, a trip state indicating external interface, on which an external power supply P1 and an indicator lamp L are connected in series, for providing a user-customized trip state indication. As described above, according to the utility model discloses an embodiment can realize the local demonstration and the teletransmission of dropout state simultaneously, and compact structure is clean and tidy to make things convenient for the product to upgrade.

The block diagrams of circuits, devices, apparatus, devices, and systems presented herein are meant to be illustrative examples only and are not intended to require or imply that the blocks, devices, and systems shown in the block diagrams must be connected or arranged or configured in a manner consistent with the teachings of the block diagrams. As will be appreciated by one skilled in the art, these circuits, devices, apparatus, devices, systems may be connected, arranged, configured in any manner that achieves the intended purposes.

It should be understood by those skilled in the art that the foregoing specific embodiments are merely exemplary and not limiting, and that various modifications, combinations, sub-combinations and substitutions may be made in the embodiments of the invention depending upon design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A circuit breaker, characterized by comprising:

the tripping state detection device is used for detecting the tripping state of the circuit breaker to generate a tripping signal;

the tripping state indicating device is connected to the tripping state detecting device and used for receiving the tripping signal from the tripping state detecting device and locally indicating the tripping state; and

and the communication device is connected to the tripping state detection device and used for receiving the tripping signal from the tripping state detection device and converting the tripping signal into a remote communication signal to be sent to a remote device.

2. The circuit breaker of claim 1, wherein:

the communication device comprises a first signal converter and a second signal converter,

the first signal converter is connected to the trip state detection device, and is configured to receive the trip signal from the trip state detection device and convert the trip signal into a local communication signal, an

The second signal converter is connected to the first signal converter for receiving the local communication signal from the first signal converter and converting the local communication signal into the remote communication signal.

3. The circuit breaker of claim 2, wherein:

the trip state detection means includes a first wire connector,

the first switch includes a first trip signal port and a second trip signal port for providing the trip signal,

the first trip signal port is connected to the trip state indicating device, an

The second trip signal port is connected to the first signal converter.

4. The circuit breaker of claim 3, wherein:

the first switch also includes a first local communication signal receiving port,

the first local communication signal receiving port is connected to the first signal converter for receiving the local communication signal from the first signal converter,

the trip state detection apparatus further includes a second connector,

the second switch includes a local communication signal transmission port, an

The local communication signal sending port is used for sending the local communication signal received by the local communication signal receiving port to the second signal converter.

5. The circuit breaker of claim 4, wherein:

the circuit breaker includes a first cable and a second cable,

the trip state indicating means includes a third connector and a fourth connector,

the third switch includes a trip signal receiving port and a second local communication signal receiving port,

the first cable includes a trip signal conductor and a local communication signal conductor,

a first end of the trip signal conductor is connected to a first trip signal port of the first wire connector, a second end of the trip signal conductor is connected to a trip signal receiving port of a third wire connector of the trip state indicating device,

a first end of the local communication signal conductor is connected to a local communication signal transmission port of the second switch, a second end of the local communication signal conductor is connected to a second local communication signal reception port of a third switch of the trip state indicating device, an

The first end of the second cable is connected to the fourth wire connector of the trip state indicating device, and the second end of the second cable is connected to the second signal converter, and is used for sending the local communication signal received by the second local communication signal receiving port to the second signal converter.

6. The circuit breaker of claim 5, wherein:

the circuit breaker further comprises a direct current power supply connected to the second signal converter to supply power to the second signal converter,

the direct current power supply also supplies power to the trip state detection device, the trip state indication device and the first signal converter through the first cable and the second cable.

7. The circuit breaker according to any one of claims 1 to 6, characterized in that:

the trip state indicating device comprises a trip state indicating lamp and an external interface for indicating the trip state.

8. The circuit breaker of claim 7, wherein:

the trip state indicating device further comprises a voltage isolation circuit for isolating the voltage of the trip state detection device from the voltage of the trip state indication external interface.

9. The circuit breaker of claim 7, wherein:

the tripping state indication external interface is provided with two ports which are connected with an external power supply and an external indicator lamp in series.

10. The circuit breaker according to any one of claims 1 to 6, characterized in that:

the tripping state detection device comprises a first resistor, a second resistor and a key switch,

the first end of the first resistor is connected with the first pole of a power supply, the second end of the first resistor is connected with the first end of the second resistor to be used as the output end of the tripping signal, the second end of the second resistor is connected with the second pole of the power supply,

the key switch is connected with the first resistor in parallel,

and the key of the key switch is connected with a release moving mechanism of the circuit breaker through a mechanical structure.

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