WO2019091406A1

WO2019091406A1 - Low-voltage power distribution device and method for controlling low-voltage power distribution device tripping

Info

Publication number: WO2019091406A1
Application number: PCT/CN2018/114395
Authority: WO
Inventors: 马锋; 周磊; 刘全和; 双兵; 伯纳德⋅珍-巴普蒂斯特; 田西蒙
Original assignee: 施耐德电气工业公司; 马锋
Priority date: 2017-11-07
Filing date: 2018-11-07
Publication date: 2019-05-16
Also published as: RU2742141C1; AU2018363439A1; EP3706154A1; CN109755078B; AU2018363439B2; EP3706154A4; EP3706154B1; CN109755078A

Abstract

A low-voltage power distribution device and a method for controlling low-voltage power distribution device tripping. The low-voltage power distribution device (200) comprises: a detection unit (100), which is configured to issue a closed state signal to a control unit when the low-voltage power distribution device is in a closed state; and the control unit (202), which is coupled to the detection unit and which is configured to switch the low-voltage power distribution unit from the closed state to an open state when the closed state signal is received and a tripping condition is satisfied. The method for use in controlling low-voltage power distribution device tripping comprises detecting whether the low-voltage power distribution device is in a closed state; detecting whether a tripping condition for low-voltage power distribution device tripping exists; causing the low-voltage power distribution device to execute a tripping action in response to the low-voltage power distribution device being in the closed state and the tripping condition being satisfied. The state of the low-voltage power distribution device may be clearly determined by means of detecting a closed state so as to prevent damage to the device and a circuit.

Description

Low-voltage power distribution device and method for controlling tripping of low-voltage power distribution device

Cross-reference to related applications

This application claims priority from Chinese patent application filed on Nov. 7, 2017, application No. 201711086939.4.

Technical field

The present disclosure relates to power distribution devices, and in one application, to low voltage power distribution devices.

Background technique

Currently, various low-voltage power distribution devices (also known as low-voltage power distribution accessories) such as leakage protectors, arc fault protectors, overvoltage/undervoltage protectors are connected between the main power supply and the load circuit. It can provide various protections such as leakage protection, arc protection, undervoltage/overvoltage protection for the main power supply or load circuit, thus ensuring the safety of the main power supply or load circuit. Some low voltage power distribution units are capable of providing one or more of the combined functions of the above described protection functions. Generally, the low-voltage power distribution device has a closing state and an opening state. In the closing state, the low-voltage power distribution device connects the main power source and the load circuit; in the opening state, the low-voltage power distribution device disconnects the main power source and the load circuit. connection. In the low-voltage power distribution device, there is generally a control circuit board, and when a fault such as leakage, arcing, and undervoltage/overvoltage occurs, the control circuit board can control the tripping mechanism to generate a tripping action, thereby making the low-voltage power distribution device The gate state is switched to the open state, thereby avoiding the above failure causing damage to the main power source or load.

The low-voltage power distribution device generally adopts the wiring method of the upper incoming line, that is, the incoming line connecting the main power supply is connected from the upper end interface of the low-voltage power distribution device, and the lower end interface of the low-voltage power distribution device is connected to the load circuit. Most of the current low-voltage power distribution units are also designed for the upper line. Therefore, when the above-mentioned failure occurs in the circuit or the low-voltage power distribution device, the low-voltage power distribution device controls the tripping, and simultaneously cuts off the power of the control circuit board. In order to meet the various needs of users, for example, due to various factors, the user may have to connect the main power supply and the load circuit by means of the down line, and developed a variety of low voltage distributions that can also be connected by the lower line. Electrical device. Down the line, as the name implies, that is, the main power supply is connected to the lower end of the low-voltage power distribution device, and the load circuit is connected to the upper end interface. However, since the internal circuit of the low-voltage power distribution device is not adjusted correspondingly, various problems occur in the low-voltage power distribution device when the lower-line mode is adopted.

Summary of the invention

One aspect of the disclosure provides a method for controlling tripping of a low voltage power distribution device. The method includes detecting whether the low-voltage power distribution device is in a closed state; detecting whether a trip condition associated with tripping of the low-voltage power distribution device is satisfied; and responding to the low-voltage power distribution device being in a closed state and the trip signal is satisfied, causing the low voltage The power distribution device performs a tripping action to switch the low voltage power distribution device from the closed state to the open state.

In some embodiments, wherein the tripping condition comprises at least one of an overvoltage, an undervoltage, a short circuit, a leakage, and an arc fault.

In some embodiments, the method further includes signaling an alert to the user in response to the trip condition being satisfied.

A second aspect of the present disclosure provides a low voltage power distribution apparatus. The low voltage power distribution apparatus includes a detection unit configured to issue a closing state signal to the control unit if the low voltage power distribution device is in a closed state; and a control unit coupled to the detection unit and configured to receive When the closing state signal and the tripping condition are satisfied, the low-voltage power distribution device is switched from the closed state to the open state for tripping.

In some embodiments, the low voltage power distribution apparatus further includes a power source configured to supply power to at least the detection unit; a communication component coupled to the detection unit operative to communicate the detection unit with the power source in the closed state.

In some embodiments, the communication component includes a first conductive contact coupled to the detection unit, a second conductive contact coupled to the power source, and a conductive component including a first contact portion and a second contact portion, the first contact portion coupling To the first conductive contact, the second contact portion is capable of contacting the second conductive contact in the closed state to connect the detecting unit to the power source.

In some embodiments, the low voltage power distribution apparatus further includes a handle that is switchable between a closing position and an opening position in response to a user operation, thereby connecting the low voltage power distribution device between the closing state and the opening state Switching; and a drive member pivotally disposed in the low voltage power distribution device and operable to rotate from the first position to the second position in response to the handle being switched from the open position to the closed position to cause the second contact Partially contacting the second conductive contact.

In some embodiments, the electrically conductive component further includes a third contact portion, and the low voltage power distribution device further includes a test component including a test unit for testing the effectiveness of the low voltage power distribution device; the test contact coupled to the test unit And a test button that drives the third contact portion to contact the test contact in response to the user's pressing, thereby communicating the test unit with the power source if the second contact portion contacts the second conductive contact.

In some embodiments, the first conductive contact, the second conductive contact, and the test contact are respectively conductive pins disposed at different locations within the low voltage power distribution device.

In some embodiments, the electrically conductive member is a torsion spring and the first contact portion is a helical portion of the torsion spring, the second contact portion is a first free end extending from the helical portion of the torsion spring, and the third contact portion is twisted The second free end of the helical portion of the spring extends.

Further features of the present disclosure will become apparent from the description of the exemplary embodiments.

The disclosure is not intended to identify key or critical features of the embodiments of the present disclosure, and is not intended to limit the scope of the disclosure. Other features of the present disclosure will be readily understood by the following description.

DRAWINGS

The above and other objects, features and advantages of the embodiments of the present invention will become more <RTIgt; In the figures, various embodiments of the present disclosure are described by way of example and not limitation

1 shows a schematic structural view of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure;

2 illustrates a side view of a low voltage switchgear in a closed state, in accordance with an exemplary embodiment of the present disclosure;

3 illustrates a side view of a low voltage switchgear in an open state, in accordance with an exemplary embodiment of the present disclosure;

4 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure;

FIG. 5 illustrates an exploded perspective view of a portion of a low voltage switchgear in accordance with an exemplary embodiment of the present disclosure;

FIG. 6 illustrates a block flow diagram of a method of controlling tripping of a low voltage power distribution device in accordance with an exemplary embodiment of the present disclosure.

Detailed ways

The principles of the present disclosure will now be described with reference to various exemplary embodiments illustrated in the drawings. It is to be understood that the description of the embodiments is only to be understood by those skilled in the art, and is not intended to limit the scope of the disclosure in any way. It should be noted that similar or identical reference numerals may be used in the drawings where possible, and similar or identical reference numerals may indicate similar or identical functions. Those skilled in the art will readily appreciate that the alternative embodiments of the structures and methods described herein may be employed without departing from the principles of the disclosure.

As used herein, the term "include" and its various variants may be understood to mean an open term, which means "including but not limited to". The term "based on" can be understood to mean "based at least in part." The term "an embodiment" can be understood to mean "at least one embodiment." The term "another embodiment" may be understood to mean "at least one other embodiment."

The low-voltage power distribution device generally has a control circuit board, and the detection module on the control circuit board can detect faults such as leakage, arc, and undervoltage/overvoltage, and send the detection result to the control unit as an electrical signal. The control unit determines, according to the signal, a trip condition in the circuit for tripping the low-voltage power distribution device, thereby issuing a trip trigger signal for triggering tripping of the trip structure, and the trip mechanism completes the trip according to the trip trigger signal. Buckle action. In some low-voltage power distribution units, the detection module may not be on the control board, and it may be powered by a separate power source.

In some cases, especially in the case of the lower-input line connection, the low-voltage power distribution unit still uses the control circuit board and its connection method when the low-voltage power distribution device is still connected. This brings a lot of problems. For example, since the lower incoming line connection method is that the main power source is connected to the lower end interface of the low voltage power distribution device, when the above fault is detected, although the control circuit board can control the trip mechanism to complete the tripping action, thereby disconnecting the main power source and the load circuit The connection, but after the trip, that is, in the case where the low-voltage power distribution device is in the open state, the control circuit board is always charged because the main power source is connected from the lower end inlet.

When the control circuit board is energized, it can complete its various functions. The control unit will still send a trip trigger signal to the trip mechanism according to the trip condition, and the trip mechanism will generate a trip action according to the signal. However, at this time, the low-voltage power distribution device still in the open state does not respond to the tripping action, that is, the tripping mechanism will always operate in this case. This idling operation often causes the tripping mechanism to malfunction such as burnout, resulting in the entire low-voltage power distribution device being unusable.

In view of this problem, some low-voltage power distribution devices use the lower incoming line and, after tripping, disable the fault detecting mechanism to prevent the tripping mechanism from being burned out. In this case, if the fault in the circuit has not been eliminated, the user can still complete the closing operation. Since the fault detection mechanism is disabled at this time, the control unit does not receive the fault signal from the fault detection mechanism, and thus does not issue a trip trigger signal. The tripping mechanism therefore does not produce an action, that is to say, in the event of a circuit failure, the circuit can still be in a connected state, and the low-voltage power distribution device only warns the user that the fault still exists by flashing the warning light. Although this can protect the trip mechanism and even the low-voltage power distribution device from damage, this may cause more serious problems. For example, the user may not notice the flashing warning light and continue other work, which may lead to the circuit. Damage to the load can even threaten the user's personal safety.

Embodiments of the present disclosure provide an improved low voltage power distribution apparatus 200 and method of controlling tripping of low voltage power distribution apparatus 200 to address or at least partially address the above and other potential problems of conventional approaches.

An improvement of the low voltage power distribution apparatus 200 and a method of controlling the trip of the low voltage power distribution apparatus 200 according to an exemplary embodiment of the present disclosure will be described in detail below with reference to FIGS. 1 through 6. FIG. 1 illustrates a structural diagram of a detecting unit and a test assembly of a low voltage switching device according to an exemplary embodiment of the present disclosure. The improved low voltage power distribution unit 200 will now be described in conjunction with FIG.

In general, the low voltage power distribution apparatus 200 of the present disclosure includes a detection unit 100 and a control unit 202. The detecting unit 100 is disposed in the low voltage power distribution device 200 for issuing a closing state signal when the low voltage power distribution device 200 is in a closed state. The closing status signal can be an electrical signal or other type of digital or analog signal. Control unit 202 is coupled to detection unit 100. It should be understood that control unit 202 may be coupled directly to detection unit 100, or may be coupled to detection unit 100 by a filter circuit or modulation circuit. That is to say, the closing state signal of the detecting unit 100 may be directly sent to the control unit 202, or may be filtered or modulated and sent to the control unit 202.

After receiving the closing state signal, if there is still a trip condition in the circuit, the control unit 202 controls the low voltage power distribution device 200 to trip. It should be understood that the low voltage power distribution apparatus according to the present disclosure triggers the trip signal only if the control unit 202 receives both the closing state signal and the trip condition. That is to say, in the open state, even if the trip condition still exists, the control unit 202 does not trigger any signal because the switch state signal is not detected or received, and the trip mechanism does not Produce any action. Therefore, by setting the detection unit 100 to indicate the closing state, which is equivalent to adding the closed loop control to the low voltage power distribution device 200, the control unit 202 can have a clearer judgment on the state of the low voltage power distribution device 200, thereby avoiding the low voltage distribution. Electrical device 200, as well as the load and its circuitry, are subject to damage.

In some embodiments, the above functions may be implemented in the following manner. The low voltage power distribution device 200 may further include a power source 215 for supplying power to at least the detecting unit 100. The detecting unit 100 will only issue a closing state signal if it is powered, that is, when the power source 215 is turned on. In some embodiments, the power source 215 can be a buck module disposed in the low voltage power distribution device 200. The buck module supplies power to the detecting unit 100 by lowering the voltage of the main power source. In some embodiments, the power source 215 can also be a battery or the like.

The low voltage power distribution apparatus 200 can also include a communication component 201 that can be coupled to the detection unit 100 and that can be operated to communicate the detection unit 100 with the power source 215 with the low voltage power distribution apparatus in a closed state, thereby detecting Unit 100 will be powered to issue a closing status signal.

Since the communication unit 201 communicates the power source 215 with the detecting unit 100 only in the closed state, the detecting unit 100 issues a closing state signal to the control unit 202. After the low voltage power distribution device 200 is tripped, the connection between the detecting unit 100 and the power source 215 is disconnected. Therefore, at this time, the detecting unit 100 cannot issue a closing state signal because it is not powered. This realizes the detection of the closing state by the simple detecting unit 100 and the communicating component 201, and substantially realizes the above-mentioned detecting function without any structural modification to the conventional low-voltage power distribution device, thereby saving the cost and improving the low voltage. The reliability of the power distribution unit.

In some embodiments, as shown in FIG. 1, the detecting unit 100 can be a circuit. The circuit can send an electrical signal at the output when the power source 215 is turned on, and the control unit 202 confirms that the low-voltage power distribution device 200 is in the closed state after receiving the electrical signal. It should be understood that the detection unit 100 can also take any other form that enables a switch-on status signal to be issued in communication with the power source 215.

In some embodiments, the low voltage power distribution device can also include a trip mechanism (not shown). The control unit 202 completes the tripping action by issuing a trip trigger signal to the trip mechanism. In some embodiments, the detection unit 100, the power source 215, the communication assembly 201, the control unit 202, and the trip mechanism can be disposed on a control circuit board (not shown) in the low voltage dispensing device. The control circuit board can be an integral circuit board or a separate structure, each module being in a separate split structure to more precisely control each unit or module.

Details of the communication assembly 201 will be described below with reference to FIG. 1 and FIGS. 2 to 5. In some embodiments, as shown in FIG. 1, the communication assembly 201 includes two conductive contacts (referred to as a first conductive contact 203 and a second conductive contact 204 for convenience of description) and a conductive member 205. The first conductive contact 203 is coupled to the detection unit 100 and the second conductive contact 204 is coupled to the power source 215. A portion of conductive member 205 (referred to as first contact portion 206 for convenience of description) is coupled to first conductive contact 203, while another portion (referred to as first contact portion 207 for convenience of description) is operable to close The second conductive contact 204 is contacted in a state to communicate the detecting unit 100 and the power source 215. .

How to achieve the conduction of the second contact portion 207 in contact with the second conductive contact 204 in the case of the closed state will be described below with reference to FIGS. 2 and 3. 2 illustrates a side view of a low voltage switchgear in a closed state, according to an exemplary embodiment of the present disclosure; and FIG. 3 illustrates a side view of a low voltage switchgear in a tripped state, according to an exemplary embodiment of the present disclosure. As can be seen from the figures, in some embodiments, the low voltage power distribution device 200 can have a handle 208 and a drive component 209. The handle 208 is switchable in two positions (referred to as closing position and opening position, respectively for convenience of description) in response to a user's operation. When the handle 208 is in the closing position, the low-voltage power distribution device 200 is in the closed state, and when in the opening position, the low-voltage power distribution device 200 is in the open state.

The drive member 209 is pivotally disposed in the low voltage power distribution device 200. During the switching of the handle from the open position of FIG. 3 to the closed position of FIG. 2, the drive member 209 can be driven to rotate from the first position P1 to the second position P1. In this process, the driving member 209 forces the second contact portion 207 to contact the second conductive contact 204, thereby achieving the second contact portion 207 contacting the second conductive contact 204 in the closed state to complete the detection unit 100 and the power supply 215. through.

As described above, the low voltage power distribution device 200 is switched from the closed state to the open state by the tripping action to disconnect the main power source from the load circuit. It should be understood that the low voltage power distribution unit 200 can also be switched from the closed state to the open state by the handle 208. Whether the low voltage power distribution device 200 is switched from the closed state to the open state due to the tripping action or the operation of the handle 208, the position of the handle 208 is correspondingly switched from the closing position to the opening position. The drive member 209 is thus also rotated from the second position P2 back to the first position P1. At this time, the second contact portion 207 does not receive the pressing force of the driving member 209, but disconnects the second conductive contact 204 to disconnect the detecting unit 100 from the power source 215.

In some embodiments, as shown in Figures 1, 2 and 3. The conductive member 205 can also include a third contact portion 213, and the low voltage power distribution device 200 further includes a test assembly 210 that can, for example, test the effectiveness of the low voltage power distribution device 200. In some embodiments, the test component 210 includes a test unit 211, a test contact 212, and a test button 214. In some embodiments, test unit 211 can be a circuit that is coupled to a respective module that requires testing. The test unit 211 is coupled to the test contact 212, and in response to a user's pressing, the test button 214 can drive the third contact portion 213 into contact with the test contact 212 such that in the closed state, that is, the second contact portion 207 contacts In the case of the second conductive contact 204, the test unit 211 is in communication with the power source 215 to power the test unit 211.

As shown in FIG. 1, the test unit 211 can be a circuit that performs a test function. It should be understood that the test unit 211 can also take any other form that can be implemented in a test function.

As shown in Figures 4 and 5, in some embodiments, the first conductive contact 203, the second conductive contact 204, and the test contact 212 are respectively conductive pins disposed in the low voltage power distribution device. The three conductive contacts are in the form of conductive pins that allow the conductive contacts to perform conductive functions while also acting as a fulcrum or pivot for the movement of certain components. The three conductive pins, that is, the first conductive contact 203, the second conductive contact 204, and the test contact 212 may be made of a metal material.

It should be understood that, in some embodiments, the first conductive contact 203, the second conductive contact 204, or the test contact 212 may also be in the form of a conductive pin, for example, may be separately disposed on the low voltage power distribution device. Any other form of contact structure within 200 that enables circuit conduction.

In some embodiments, as shown in FIG. 4, the conductive member 205 can be a torsion spring. The torsion spring generally has a helical portion and at least two free ends extending from the helical portion (referred to as a first free end and a second free end for convenience of description). In some embodiments, the helical portion of the torsion spring acts as the first contact portion 206, the second contact portion 207 can be the first free end, and the third contact portion 213 can be the second free end. In view of the need for construction in the low voltage power distribution apparatus 200, the first free end and the second free end may have suitable lengths and may be bent or deformed to enable the torsion spring to accommodate the first conductive contact in the low voltage power distribution apparatus 200. 203. The second conductive contact 204 and the test contact 212 are disposed.

In some embodiments, the low voltage power distribution device 200 also includes an alarm unit (not shown). The alarm unit is capable of alerting the user if the fault detection mechanism detects that there is a trip condition in the circuit. For example, the alarm unit can issue a light alarm, an audible alarm, or a combination of both depending on the trip condition to alert the user that there is a fault in the circuit that requires maintenance as soon as possible.

The improvement in the structure of the low-voltage power distribution device is described in detail above with reference to Figs. It is also important that the control logic of control unit 202 also needs to be improved accordingly in order to better address some of the problems associated with conventional low voltage power distribution units. This is reflected in the method of controlling the trip of the low voltage power distribution unit 200.

Referring to Figure 6, a block flow diagram 600 of a method of controlling tripping of a low voltage power distribution device is illustrated in accordance with an exemplary embodiment of the present disclosure.

At block 601, it is detected if the low voltage power distribution device 200 is in a closed state. In some embodiments, the closing state can be detected by the detecting unit 100 as described above, that is, the block 601 can be executed by the detecting unit 100. The detecting unit 100 transmits the closing state information to the control unit 202 in the closed state. It should of course be understood that in some embodiments, the block 601 can also be performed by any other component or unit capable of detecting the closed state.

At block 602, it is detected if the trip condition associated with the low voltage power distribution device is met. In some embodiments, the block 602 can be performed by the fault detection mechanism described above. The fault detecting mechanism may transmit a trip condition signal to the control unit 202 upon detecting that the trip condition is satisfied. In some embodiments, the content in block 602 can also be performed by control unit 202.

It should be noted that although block 601 is described before block 602, it does not mean that it can only be performed in the described order of the two

blocks

601 and 602, and the method can be performed in other orders. For example, block 601 and block 602 can be performed simultaneously, or the contents of block 602 can be performed first, and then the contents of block 601 can be performed.

At block 604, in response to the low voltage power distribution device 200 being in the closed state and the trip condition being satisfied, the low voltage power distribution device is caused to perform a trip action to switch the low voltage power distribution device from the closed state to the open state. In some embodiments, block 604 can be performed by control unit 202 described above. In some embodiments, the block 604 can cause the low voltage power distribution device 200 to trip by the control unit 202 sending a trip trigger signal to the venting mechanism.

It can be seen that the method will trip the trip device only if both the closed state and the tripping condition are satisfied. This is equivalent to adding closed-loop control when controlling the disconnect. For example, at block 605, when the low voltage power distribution apparatus 200 is in the open state, the tripping action is not performed, so that components related to performing the tripping action, such as tripping mechanisms, etc., are not frequently operated. Burned out. At this point, at block 606, control unit 202 is already in a standby state without triggering a signal such as a trip signal.

Further, if the low-voltage power distribution device 200 is detected to be in the closed state in the case where the tripping condition is satisfied, the low-voltage power distribution device is also tripped to be switched from the closed state to the open state. This ensures safe use of the load circuit and even the low voltage power distribution unit 200.

In some embodiments, the above method can be applied to a low voltage power distribution device in a down wiring state. Of course, it should be understood that the method can also be applied to any other low voltage power distribution device that needs to detect the closing state. In some embodiments, the trip conditions described above may include, but are not limited to, at least one of overvoltage, undervoltage, short circuit, leakage, and arc fault of the circuit.

In some embodiments, for example, at block 603, an alert signal is sent to the user in response to the trip condition being satisfied. Based on the alarm signal, the user will perform maintenance on the circuit or the low-voltage power distribution device to eliminate the fault that triggers the trip condition. This further ensures the safe use of the low voltage power distribution unit 200.

While some specific embodiments of the present disclosure have been shown by way of example, it is understood that Those skilled in the art will appreciate that the above-described embodiments may be modified without departing from the scope and spirit of the disclosure. The scope of the disclosure is defined by the appended claims.

In the specification and the claims below, the terms "comprise" and "comprising" are understood to include the recited component or group of components, but do not exclude any other component or group of components.

The reference to any prior art in this specification is not, and should not be construed,

It is to be understood that the following claims are only intended to be a contingent of the claims, and are not intended to limit the scope of the claims to any future patent application based on this application. The ingredients may be added or deleted in the following claims to further define or redefine the present disclosure.

Claims

A method (600) for controlling tripping of a low voltage power distribution device (200), wherein the method comprises:

Detecting (601) whether the low voltage power distribution device (200) is in a closed state;

Detecting (602) whether a trip condition associated with the low voltage power distribution device (200) is met;

Responding to the low voltage power distribution device (200) being in the closed state and the trip condition being satisfied, causing the low voltage power distribution device (200) to perform a (604) tripping action to The electric device (200) is switched from the closed state to the open state.
The method of claim 1 wherein said tripping condition comprises at least one of an overvoltage, an undervoltage, a short circuit, an electrical leakage, and an electrical arc fault.
The method of claim 1 further comprising:

In response to the trip condition being satisfied, an alert signal is sent (603) to the user.
A low voltage power distribution device (200), characterized in that the low voltage power distribution device (200) comprises:

a detection unit (100) configured to issue a closing state signal to the control unit (202) if the low voltage power distribution device (200) is in a closed state;

The control unit (202) coupled to the detection unit (100) and configured to cause the low voltage power distribution device (200) to receive the closing status signal and satisfy a trip condition Switching from the closed state to the open state for tripping.
The low-voltage power distribution apparatus (200) according to claim 4, further comprising:

a power source (215) configured to supply power to at least the detecting unit (100);

A communication component (201) coupled to the detection unit (100) is operable to communicate the detection unit (100) with the power source (215) in the closed state.
The low-voltage power distribution apparatus (200) according to claim 5, wherein the communication component (201) comprises:

a first conductive contact (203) coupled to the detection unit (100),

a second conductive contact (204) coupled to the power source (215), and

A conductive member (205) includes a first contact portion (206) and a second contact portion (207), the first contact portion (206) being coupled to the first conductive contact (203), the second contact The portion (207) is capable of contacting the second conductive contact (204) in the closed state to connect the detection unit (100) to the power source (215).
The low-voltage power distribution apparatus (200) of claim 5, further comprising:

a handle (208) capable of switching between a closing position and a opening position in response to a user operation, thereby switching the low voltage power distribution device (200) between the closing state and the opening state ;as well as

a drive member (209) pivotally disposed in the low voltage power distribution device (200) and operable to switch from the trip position to the close position in response to the handle (208) The first position (P1) is rotated to the second position (P2) such that the second contact portion (207) contacts the second conductive contact (204).
The low-voltage power distribution apparatus (200) according to claim 5, wherein the conductive member (205) further includes a third contact portion (213), and the low-voltage power distribution device (200) further includes a test component (210), the test component (210) includes:

a test unit (211) for testing the effectiveness of the low voltage power distribution device (200);

Testing a contact (212) coupled to the test unit (211);

a test button (214) that drives the third contact portion (213) to contact the test contact (212) in response to a user's depression, thereby contacting the second conductive portion at the second contact portion (207) The test unit (211) is in communication with the power source (215) in the case of a contact (204).
The low voltage power distribution unit (200) according to claim 8, wherein said first conductive contact (203), said second conductive contact (204) and said test contact (212) are respectively disposed at Conductive pins at different locations within the low voltage power distribution unit (200).
The low-voltage power distribution apparatus (200) according to claim 9, wherein said conductive member (205) is a torsion spring, and said first contact portion (206) is a spiral portion of said torsion spring, The second contact portion (207) is a first free end extending from the spiral portion of the torsion spring, and the third contact portion (213) is extended from the spiral portion of the torsion spring Second free end.