Power supply switching system

Abstract

To facilitate the maintenance of distance between movable and fixed contacts when the system is switched off, in electrical and electronic equipment used in systems where power consumption is changed. [Solution] A power switching system comprising electrical and electronic equipment having a first terminal section 11 connectable to a commercial power supply, a second terminal section 12 connectable to a power conditioner, a movable contact 14 having a movable contact 141, a fixed contact 15 having a fixed contact 151, and a case housing the movable contact, wherein the case is provided with an electric wire 16 connected to the movable contact, and when the movable contact is operated, both the end on the side where the movable contact is located and the end on the opposite side are movable, and the connection part 19 between the movable contact and the electric wire is configured to be movable within the case when the movable contact is operated so that the movable contact makes contact with or separates from the fixed contact.

Description

Technical Field

[0001] The present invention relates to a power utilization switching system.

Background Art

[0002] Patent Document 1 discloses using a switch that opens and closes a circuit using a relay in a system equipped with a commercial power source and distributed power sources (such as solar power and storage batteries).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0004] By the way, usually, one end of the movable contact provided in the relay (the end opposite to the end having the movable contact) is fixed to a case or the like. Therefore, even in the off state, the distance between the movable contact and the fixed contact is relatively close. Thus, when a large current is applied, welding or the like may occur between the fixed contact and the movable contact. Also, there is a risk of an electrical accident due to welding.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The inventor of the present case has tried to solve this problem by earnestly studying this point. The problem to be solved by the present invention is to make it easy to ensure the distance between the movable contact and the fixed contact when off, in an electrical and electronic device provided in a system used when changing the power utilization.

Means for Solving the Problems

[0006] To solve the above problems, the present invention provides a power utilization switching system comprising an electrical and electronic device having a first terminal section electrically connectable to a commercial power supply, a second terminal section electrically connectable to a power conditioner, a movable contact having a movable contact, a fixed contact having a fixed contact, and a case housing the movable contact, wherein the case is equipped with an electric wire connected to the movable contact, and both the end on the side where the movable contact is located and the end on the opposite side are movable when the movable contact is operated so that the movable contact makes contact with or separates from the fixed contact, and the connection between the movable contact and the electric wire is movable within the case when the movable contact is operated so that the movable contact makes contact with or separates from the fixed contact.

[0007] Furthermore, it is preferable to have a configuration that allows the movable contact to disengage from the fixed contact in the event of a commercial power outage, and allows the movable contact to make contact with the fixed contact when the commercial power is restored.

[0008] Furthermore, it is preferable that the electrical and electronic equipment be configured such that, in the event of a commercial power outage, the movable contacts disengage from the fixed contacts based on a signal sent from the power conditioner, and, when the commercial power is restored, the movable contacts make contact with the fixed contacts based on the electricity sent to the first terminal.

[0009] Furthermore, it is preferable to have a configuration that allows the device to operate using the electricity sent to the first terminal when commercial power is restored, and to use the movement of the device to cause the movable contact to make contact with the fixed contact.

[0010] Furthermore, it is preferable that the signals received by the electrical and electronic equipment from the power conditioner and the electricity supplied from the commercial power supply to the first terminal section be of different types.

[0011] Furthermore, it is preferable to have a configuration that includes a box for housing electrical and electronic equipment in which the electrical and electronic equipment is housed.

[0012] Furthermore, it is preferable that the electrical and electronic equipment housing box, which houses the electrical and electronic equipment, also houses at least one of either primary-side power distribution equipment connected to the primary side of the electrical and electronic equipment, or secondary-side power distribution equipment electrically connected to the secondary side of the electrical and electronic equipment. [Effects of the Invention]

[0013] In the present invention, it is possible to make it easier to ensure the distance between the movable contacts and the fixed contacts when the system is turned off, in electrical and electronic equipment provided in a system used when changing the power consumption. [Brief explanation of the drawing]

[0014] [Figure 1] This diagram shows an example of connecting a commercial power supply, electrical and electronic equipment (circuit breaker), a power conditioner, and a load device. [Figure 2] This diagram shows a different connection example from Figure 1, involving a commercial power supply, electrical and electronic equipment (circuit breaker), power conditioner, and load device. [Figure 3] This diagram shows an example of connecting a commercial power supply, electrical and electronic equipment (switches), a power conditioner, and a load device. [Figure 4] This diagram shows a different connection example from Figure 1, involving a commercial power supply, electrical and electronic equipment (switches), a power conditioner, and a load device. [Figure 5] This is a front view showing an example of an electrical and electronic device (circuit breaker) that combines a circuit breaker and a control unit. [Figure 6] This is a front view showing an example of an electrical and electronic device (changeover switch) that combines a circuit breaker and a control unit. [Figure 7] This is a cross-sectional view showing the internal structure of the circuit breaker according to the embodiment. However, part of the case has been omitted. [Figure 8] This diagram shows the positional relationship of equipment, etc., during the on / off operation of the circuit breaker in the embodiment. However, (8a) is the on state and (8b) is the off state. [Figure 9]It is a cross-sectional view showing the internal structure of the changeover switch of the embodiment. [Figure 10] It is a diagram showing the change in the positional relationship of devices and the like in the operation of the changeover switch of the embodiment. However, (10a) is a state in which the first connection terminal and the third connection terminal are conductive, and (10b) is a state in which the second connection terminal and the third connection terminal are conductive. [Figure 11] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment dedicated to electrical and electronic equipment is provided. [Figure 12] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment and power conditioner distribution equipment is provided. [Figure 13] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment, power conditioner distribution equipment, main breaker, and branch breaker is provided. [Figure 14] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment and primary side distribution equipment is provided. [Figure 15] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment, primary side distribution equipment, and power conditioner distribution equipment is provided. [Figure 16] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment, primary side distribution equipment, power conditioner distribution equipment, main breaker, and branch breaker is provided. [Figure 17] It is a diagram showing an example when an enclosure for housing electrical and electronic equipment, primary side distribution equipment, power conditioner distribution equipment, and secondary side distribution equipment is provided.

Embodiments for Carrying Out the Invention

[0015] The following describes embodiments for carrying out the invention. The power utilization switching system of this embodiment comprises an electrical and electronic device 1 having a first terminal section 11 electrically connectable to a commercial power supply 91, a second terminal section 12 electrically connectable to a power conditioner 92, a movable contact 14 having a movable contact 141, a fixed contact 15 having a fixed contact 151, and a case 17 that houses the movable contact 14. The power utilization switching system also includes an electric wire 16 connected to the movable contact 14 inside the case 17. Furthermore, when the movable contact 14 is operated so that the movable contact 141 makes contact with or separates from the fixed contact 151, both the end on the side where the movable contact 141 is located and the end on the opposite side of that end are movable. Moreover, the connection portion 19 between the movable contact 14 and the electric wire 16 is movable within the case 17 when the movable contact 14 is operated so that the movable contact 141 makes contact with or separates from the fixed contact 151. In other words, the degree of freedom of movement of the movable contact 14 can be increased compared to a system where one end of the movable contact is fixed to the case. Therefore, in an electrical and electronic device 1 provided in a system used when changing the power consumption, it becomes easier to ensure the distance between the movable contact 141 and the fixed contact 151 when the system is off.

[0016] The power switching system in this embodiment is used when utilizing solar power generation and commercial power supply 91. This system includes electrical and electronic equipment 1, which includes movable contacts 141 and fixed contacts 151 that open and close the electrical circuit. Specifically, these include circuit breakers, switches, disconnectors, etc. However, in the following explanation, circuit breakers and switching switches will be used as examples.

[0017] For example, if the electrical and electronic equipment 1 is a circuit breaker equipped with a first terminal section 11 and a second terminal section 12, the commercial power supply 91 is electrically connected to the first terminal section 11, and the power conditioner 92 and load device 93 are electrically connected to the second terminal section 12, and the electrical and electronic equipment 1 can be configured to change whether or not electricity is supplied from the commercial power supply 91 to the load device 93 by opening and closing contacts provided in the electrical and electronic equipment 1 (see Figures 1 and 2).

[0018] Furthermore, if the electrical and electronic equipment 1 is a changeover switch equipped with a first terminal section 11, a second terminal section 12, and a third terminal section 13, the commercial power supply 91 is electrically connected to the first terminal section 11, the power conditioner 92 to the second terminal section 12, and the load device 93 to the third terminal section 13. The system can be configured so that the source of electricity supplied to the load device 93 can be switched between the commercial power supply 91 and the emergency power supply 94 by switching the contacts (see Figures 3 and 4).

[0019] The electrical and electronic equipment 1 of this embodiment includes a first terminal section 11 that can be electrically connected to a commercial power supply 91, a second terminal section 12 that can be electrically connected to a power conditioner 92 and a load device 93, a movable contact 14 having a movable contact 141, and a fixed contact 15 having a fixed contact 151. A bendable wire 16 is connected to the movable contact 14, and the entire movable contact 14 can be moved while the movable contact 14 and the wire 16 are connected. Incidentally, when the entire movable contact 14 moves, the connection section 19, which is the connection point between the movable contact 14 and the wire 16, moves in accordance with the movement of the movable contact 14.

[0020] Furthermore, the electrical and electronic equipment 1 is equipped with a mechanical mechanism that can be used to move the movable contact 14. The mechanical mechanism is used when operating the movable contact 14 so that the movable contact 141 makes contact with or separates from the fixed contact 151. The mechanical mechanism in this embodiment is equipped with a link mechanism having a plurality of link members and is configured so that an appropriate force is applied to the movable contact 14. For this reason, it is preferable that the electrical and electronic equipment 1 be equipped with a link mechanism having a plurality of link members.

[0021] The electrical and electronic equipment 1 of this embodiment includes a first terminal section 11, a second terminal section 12, and a circuit breaker 21 which includes a mechanical mechanism. Adjacent to the circuit breaker 21 is a control unit 22 used to control the circuit breaker 21. If complex control is not required, the electrical and electronic equipment 1 can be made without the control unit 22, but by including the control unit 22, the range of uses for the electrical and electronic equipment 1 can be broadened.

[0022] In the example shown in Figure 5, the electrical and electronic equipment 1 is a circuit breaker, and in order to enable the movement of the handle 24 provided on the breaker unit 21, an operating unit 23 is fitted onto the handle 24, and the control unit 22 controls the movement of this operating unit 23. For example, it is preferable to configure the motor provided on the control unit 22 and the operating unit 23 to work in conjunction, so that at least one of the on operation or off operation (opening or closing of the movable contact 141 and the fixed contact 151) can be controlled.

[0023] In the example shown in Figure 6, the electrical and electronic equipment 1 is a changeover switch, and the control unit 22 is equipped with a solenoid that can be used to move the movable contact 14 provided on the interruption unit 21. By moving the operating unit which is linked to the solenoid, at least one of the on operation or off operation (opening or closing of the movable contact 141 and the fixed contact 151) can be controlled.

[0024] Here, we will explain the movement of the movable contact 14 of the electrical and electronic equipment 1. The electrical and electronic equipment 1 in the example shown in Figure 5 is a circuit breaker, and as can be seen from Figure 7, the wires 16 are housed in the case 17. These wires 16 are connected to the movable contact 14, and when the fixed contact 151 and the movable contact 141 are in contact, electricity supplied from the commercial power supply 91 can be passed through them.

[0025] As can be seen from Figures 7 and 8, in this circuit breaker, the movable contact 14 is not fixed to the case 17 itself, but is positioned to rest on the spring 27. Therefore, the range of motion of the movable contact 14 can be increased compared to when the movable contact 14 is directly fixed to the case 17. The movable contact 14 is equipped with a projection (not shown) that can fit inside the spring 27, and the movable contact 14 and the spring 27 are connected by inserting the projection into the spring 27.

[0026] Furthermore, a flexible wire 16 is connected to the movable contactor 14 so that it can follow the movement of the movable contactor 14 when the movable contactor 141 makes contact with or separates from the fixed contactor 151 (see Figure 8). The wire 16 is housed in the case 17 in a bent state (not under tension) and not taut so that it can follow the movement of the movable contactor 14.

[0027] In this example, the mechanical mechanism includes a linkage mechanism that includes a handle 24 operated to change the positional relationship between the fixed contact 151 and the movable contact 141, a crossbar 25 which moves approximately vertically in Figure 8 and, by moving downward, presses down on the movable contact 14 to bring the movable contact 141 and the fixed contact 151 into contact, and a connecting member 26 which links the handle 24 and the crossbar 25 to synchronize their movements.

[0028] Next, we will explain the case of a changeover switch. The changeover switch shown in Figure 6 has a first terminal section 11, a second terminal section 12, and a third terminal section 13 in the interruption section 21, and a movable contact 14 is provided inside the case 17 of the interruption section 21 (see Figure 9). This movable contact 14 is not directly fixed to the case 17, but is configured to move in a swinging motion in accordance with adjacent members (see Figure 10).

[0029] Furthermore, the blocking unit 21 of this embodiment includes a mechanical mechanism and a case 17 housing the mechanical mechanism for each pole. The mechanical mechanism also includes a rotating member that can rotate around an axis. The axis of this embodiment passes through multiple rotating members, and multiple rotating members can be moved by moving the axis. In this embodiment, adjacent rotating members are engaged with each other at an engaging portion, and a link member provided in the control unit 22 is engaged with the rotating member located at one end.

[0030] Furthermore, the control unit 22 of this embodiment is equipped with multiple solenoids, and the operation status of these solenoids determines whether the third terminal 13 is connected to the first terminal 11 or the second terminal 12.

[0031] By the way, in this embodiment, the electrical and electronic equipment 1 has a commercial power supply 91 connected to the primary side, and a power conditioner 92 and a load device 93 connected to the secondary side. Since an emergency power supply 94, such as a solar power generation system or a storage battery, is connected to the power conditioner 92, the electrical and electronic equipment 1 is connected to the emergency power supply 94 via the power conditioner 92. The load device 93 connected to the electrical and electronic equipment 1 is, for example, a distribution board to which multiple load devices are connected. However, it is also possible to have a configuration in which the load devices are directly connected to the electrical and electronic equipment 1.

[0032] The role of the electrical and electronic equipment 1 in this embodiment is to supply electricity from the commercial power supply 91 to the load device 93 connected to the secondary side of the electrical and electronic equipment 1 when electricity is supplied from the commercial power supply 91 (when no power outage occurs). However, electricity from the emergency power supply 94 connected via the power conditioner 92 may also be supplied to the load device 93, in addition to the electricity from the commercial power supply 91.

[0033] In contrast, if a power outage occurs in the commercial power supply 91 and electricity is not supplied, the role of the electrical and electronic equipment 1 is to supply electricity from the emergency power supply 94 to the load device 93. In this case, if the electricity supplied from the emergency power supply 94 flows back to the commercial power supply 91 side through the electrical and electronic equipment 1, there is a risk of electrical accidents such as electric shock. For this reason, if sufficient electricity is not supplied to the electrical and electronic equipment 1 from the commercial power supply 91, it is preferable to configure the commercial power supply 91 and the load device 93 so that they are not electrically connected.

[0034] Specifically, in the case of a circuit breaker, reverse power flow can be prevented by separating the fixed contact 151 and the movable contact 141. In the case of a changeover switch, reverse power flow can be prevented by switching the connection destination of the third terminal section 13 to which the load device 93 is connected, from the first terminal section 11 to which the commercial power supply 91 is connected, to the second terminal section 12 to which the power conditioner 92 is connected.

[0035] In order to enable the interruption or switching of electrical and electronic equipment 1 when electricity is not supplied to the electrical and electronic equipment 1 from the commercial power supply 91, in this embodiment, a signal output from the power conditioner 92, which has detected a power outage in the commercial power supply 91, is used to interrupt or switch the contacts of the electrical and electronic equipment 1.

[0036] The signal output from the power conditioner 92 at this time may be exemplified by DC12V, DC24V, AC100V, or AC200V, but it is not limited to these examples. For example, it may be a signal of a voltage of other magnitude or a signal of a specific frequency. Also, the waveform of the signal used at this time may be exemplified by a sine wave, square wave, or triangular wave, but it is not limited to these and can be any waveform.

[0037] The electrical and electronic equipment 1 receives a signal output from the power conditioner 92 to either disconnect or switch the contacts that remain connected. Preferably, this disconnection or switching is performed using a solenoid or motor provided in the control unit 22. In this case, it is preferable that the signal output from the power conditioner 92 corresponds to the type of solenoid or motor used in the electrical and electronic equipment 1.

[0038] For example, when using a motor driven by a DC power supply, it is preferable to output DC12V or 24V, and when using a solenoid driven by an AC power supply, it is preferable to output AC100V or AC200V from the power conditioner 92 to the electrical and electronic equipment 1.

[0039] Furthermore, the route through which the signal output from the power conditioner 92 to the electrical and electronic equipment 1 passes may be through a cable or the like connecting the second terminal 12 of the electrical and electronic equipment 1 to the power conditioner 92. In this case, the signal can be sent using the electrical path that goes from the power conditioner 92 to the load device 93 via the electrical and electronic equipment 1. Of course, it is not necessary to send the signal using such a path. For example, a signal line that carries only signals may be connected between the electrical and electronic equipment 1 and the power conditioner 92.

[0040] Such cables and signal lines can be connected to the control unit 22 of the electrical and electronic equipment 1. The control unit 22 to which the cables and signal lines are connected can be exemplified by controlling the operation unit 23 to open or close contacts upon receiving a signal. Alternatively, the control unit 22 that receives the signal may open or close contacts provided within the control unit 22 itself.

[0041] Incidentally, it is possible that after a power outage occurs in the commercial power supply 91 and the contacts of the electrical and electronic equipment 1 are disconnected or switched, the commercial power supply 91 may be restored. Therefore, when the commercial power supply 91 is restored, it is preferable to detect the change from a state where electricity is not supplied from the commercial power supply 91 to a state where electricity is supplied, and to connect or switch the contacts of the electrical and electronic equipment 1 so that the electricity sent from the commercial power supply 91 can be supplied to the load device 93 via the electrical and electronic equipment 1.

[0042] To enable this, it is preferable to have a configuration that allows the movable contact 141 to disengage from the fixed contact 151 when the commercial power supply 91 is interrupted, and allows the movable contact 141 to make contact with the fixed contact 151 when the commercial power supply 91 is restored.

[0043] In this case, it is preferable that the electrical and electronic equipment 1 be configured to be able to detect on its own the change from a state where electricity is not supplied to a state where electricity is supplied. For example, it is preferable that the electrical and electronic equipment 1 be configured to be able to operate so that when the commercial power supply 91 is interrupted, the movable contact 141 disengages from the fixed contact 151 based on a signal sent from the power conditioner 92, and so that when the commercial power supply 91 is restored, the movable contact 141 makes contact with the fixed contact 151 based on the electricity sent to the first terminal section 11.

[0044] Furthermore, it is preferable to configure the system so that the electricity supplied to the first terminal 11 is used to operate equipment such as solenoids and motors, and the resulting movement is used to cause the movable contact 141 to make contact with the fixed contact 151. In other words, it is preferable to configure the system so that when the commercial power supply 91 is restored, the electricity supplied to the first terminal 11 is used to operate equipment, and the movement of said equipment is used to cause the movable contact 141 to make contact with the fixed contact 151.

[0045] To enable this, it is preferable that the type of electricity supplied from the commercial power supply 91 to the electrical and electronic equipment 1 and the type of signal output from the power conditioner 92 during a power outage are different. For example, the type of electricity that the electrical and electronic equipment 1 detects itself when power is restored may be AC100V or AC200V, but this type of electricity should be different from the type of electricity in the signal output from the power conditioner 92 when the commercial power supply 91 is out of service. More specifically, this means that the signal output from the power conditioner 92 when the commercial power supply 91 is out of service should be DC12V or DC24V. Examples of different types of electricity include the difference between direct current and alternating current, but also cases where the magnitude of the voltage or other parameters is clearly different.

[0046] As can be understood from these descriptions, it is preferable that the signals received by the electrical and electronic equipment 1 from the power conditioner 92 and the electricity supplied from the commercial power supply 91 to the first terminal section 11 be of different types.

[0047] By the way, the circuit breaker in the example of electrical and electronic equipment 1 has a first terminal section 11 and a second terminal section 12. If the commercial power supply 91 is connected to the first terminal section 11 and the power conditioner 92 and load device 93 are connected to the second terminal section 12, the wiring work to the second terminal section 12 becomes time-consuming. For this reason, it is preferable to configure the circuit breaker to have a second terminal section 12 and a third terminal section as secondary terminal sections, so that the power conditioner 92 is connected to the second terminal section 12 and the load device 93 is connected to the third terminal section.

[0048] It is preferable that the electrical and electronic equipment 1, such as circuit breakers used in the power utilization switching system, be housed in an electrical and electronic equipment housing box 5. In other words, it is preferable that the power utilization switching system be configured to include an electrical and electronic equipment housing box 5 in which the electrical and electronic equipment 1 is housed.

[0049] For example, a dedicated electrical and electronic equipment enclosure 5 may be provided for the electrical and electronic equipment 1 (see Figure 11). In this case, the electrical and electronic equipment enclosure 5 would be prepared separately from the distribution board 96 connected to the power conditioner 92, but this eliminates the need for space inside the distribution board 96 to place the electrical and electronic equipment 1, and also protects the electrical and electronic equipment 1. Furthermore, it increases the flexibility of the placement of the electrical and electronic equipment 1. If the distribution board 96 is for household use, it may be difficult to adopt a larger distribution board 96 than the one already installed, but even in such cases, it is possible to accommodate the electrical and electronic equipment 1 if it can be placed outside the distribution board 96.

[0050] Furthermore, in the example power switching system shown in Figure 11, commercial power supply 91 can be connected to the primary side of the electrical and electronic equipment 1, and a distribution board 96 is connected to the secondary side of the electrical and electronic equipment 1. However, in order to enable power to be supplied to the distribution board 96 via the power conditioner 92 when the commercial power supply 91 is unavailable, the power conditioner 92 is electrically connected to the distribution board 96.

[0051] Incidentally, the wires connecting the electrical and electronic equipment 1 and the distribution board 96, and the wires connecting the power distribution equipment and the distribution board 96 are provided separately, but the electrical and electronic equipment 1 and the power conditioner 92 are electrically connected via the distribution board 96. This is also the case in the following examples where the distribution board 96 is used.

[0052] Furthermore, if power distribution equipment is provided to protect the circuit between the power conditioner 92 and the distribution board 96, it can be placed between the power conditioner 92 and the distribution board 96 or inside the power conditioner 92.

[0053] Needless to say, the power conditioner 92 is electrically connected to emergency power sources 94 such as solar power generation equipment and storage batteries, and the distribution board 96 is connected to load devices 93.

[0054] In the example shown in Figure 11, a dedicated electrical and electronic equipment enclosure 5 was used, which allows for disconnection from the commercial power supply 91. However, the configuration is not limited to this example. In the example shown in Figure 12, the electrical and electronic equipment enclosure 5 houses the electrical and electronic equipment 1 and a power conditioner distribution device 83 that can be interposed between the power conditioner 92 and the distribution board 96. The power conditioner 92 is electrically connected to the distribution board 96 via the power conditioner distribution device 83 housed in the electrical and electronic equipment enclosure 5. The power conditioner distribution device 83 can be a circuit breaker, terminal block, or the like.

[0055] Furthermore, in the example shown in Figure 13, a main circuit breaker 71 is connected to the secondary side of the electrical and electronic equipment 1. This main circuit breaker 71 and branch circuit breakers 72 located on the secondary side of the main circuit breaker 71 are housed together with the electrical and electronic equipment 1 in the electrical and electronic equipment housing box 5. In the example shown in Figure 13, there is only one branch circuit breaker 72 housed in the electrical and electronic equipment housing box 5, but it can be configured to have multiple branch circuit breakers. Also, in the example shown in Figure 13, a power conditioner distribution device 83 used for connecting to the power conditioner 92 is also housed in the electrical and electronic equipment housing box 5 that contains the electrical and electronic equipment 1. In this example, the electrical and electronic equipment 1 and the power conditioner 92 are electrically connected via the main circuit breaker 71. This is also the case in the following examples using the main circuit breaker 71.

[0056] As can be seen from Figure 14, the power distribution equipment (primary side power distribution equipment 81) provided on the primary side of the electrical and electronic equipment 1 may be housed in the electrical and electronic equipment housing box 5. In this case, electricity is supplied from the commercial power supply 91 to the electrical and electronic equipment 1 via the primary side power distribution equipment 81 housed in the electrical and electronic equipment housing box 5, and also supplied to the secondary side of the electrical and electronic equipment 1. In the example shown in Figure 14, electricity is supplied to the distribution board 96 located on the secondary side of the electrical and electronic equipment 1.

[0057] The primary side power distribution equipment 81 may be a terminal block, or a circuit breaker capable of protecting the primary side circuit of the electrical and electronic equipment 1. Furthermore, the primary side power distribution equipment 81 may be used to accommodate cases where the size and connection method of the primary side terminals and wires connected to them of the electrical and electronic equipment 1 differ. In addition, the primary side power distribution equipment 81 may be used when adding new equipment to the primary side of the electrical and electronic equipment 1.

[0058] The example shown in Figure 15 houses the electrical and electronic equipment 1, the primary side power distribution equipment 81 located on the primary side of the electrical and electronic equipment 1, and the power conditioner power distribution equipment 83 connected to the power conditioner 92 in the electrical and electronic equipment housing box 5. In this example, the distribution board 96 and the power conditioner 92 are connected to the power conditioner power distribution equipment 83 housed in the electrical and electronic equipment housing box 5, and the commercial power supply 91 is connected to the primary side power distribution equipment 81.

[0059] The example shown in Figure 16 houses electrical and electronic equipment 1, primary side power distribution equipment 81 located on the primary side of electrical and electronic equipment 1, power conditioner power distribution equipment 83 connected to power conditioner 92, main circuit breaker 71, and branch circuit breaker 72 in an electrical and electronic equipment housing box 5. In this example, the power conditioner 92 is connected to the power conditioner power distribution equipment 83 housed in the electrical and electronic equipment housing box 5, and the commercial power supply 91 is connected to the primary side power distribution equipment 81.

[0060] The example shown in Figure 17 houses electrical and electronic equipment 1, primary side power distribution equipment 81 located on the primary side of electrical and electronic equipment 1, secondary side power distribution equipment 82 located on the secondary side of electrical and electronic equipment 1, and power conditioner power distribution equipment 83 interposed in the path that sends electricity from the power conditioner 92 to the secondary side power distribution equipment 82, all within an electrical and electronic equipment housing box 5. In this example, the power conditioner 92 is connected to the power conditioner power distribution equipment 83 housed in the electrical and electronic equipment housing box 5, a distribution board 96 is connected to the secondary side power distribution equipment 82, and commercial power supply 91 is connected to the primary side power distribution equipment 81. The primary side power distribution equipment 81 and the secondary side power distribution equipment 82 may be terminal blocks or circuit breakers that can be used for circuit protection.

[0061] The secondary power distribution equipment 82 may be designed to allow connection of wires other than those originating from the secondary side of the electrical and electronic equipment 1. This would allow connection of compatible wires even if the size or connection method of the wires originating from the secondary side of the electrical and electronic equipment 1 is not compatible with the connection to the distribution board 96. Furthermore, the secondary power distribution equipment 82 may be used as a connection point when adding new equipment to the secondary side of the electrical and electronic equipment 1.

[0062] As can be understood from these descriptions, the power utilization switching system is preferably configured such that the electrical and electronic equipment housing box 5, which houses the electrical and electronic equipment 1, houses at least one of either a primary-side power distribution device 81 connected to the primary side of the electrical and electronic equipment 1, or a secondary-side power distribution device 82 electrically connected to the secondary side of the electrical and electronic equipment 1.

[0063] Furthermore, as shown in the examples in Figures 11, 12, 14, 15, and 17, when the electrical and electronic equipment enclosure 5 is interposed between the commercial power supply 91 and the distribution board 96, and the electrical and electronic equipment enclosure 5 is connected to the distribution board 96 after installation, it is also possible to pre-connect the wires coming out of the electrical and electronic equipment 1 and the wires coming out of the power conditioner distribution equipment 83 to the secondary distribution equipment 82 before delivery of the electrical and electronic equipment enclosure 5, and then, after installation, connect the wires coming out of the secondary distribution equipment 82 to the distribution board 96 to connect the electrical and electronic equipment 1 and the distribution board 96. In this way, it becomes unnecessary to perform the wiring work from the commercial power supply 91 to the distribution board 96 all at once, and the efficiency of the work can be expected to be improved.

[0064] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments and can be configured in various ways. For example, the power utilization switching system may be configured using only electrical and electronic equipment, or it may be configured by adding other equipment to the electrical and electronic equipment. Alternatively, the power distribution equipment may be placed outside the housing box for the electrical and electronic equipment, and both the wires carrying electricity from the commercial power source and the wires carrying electricity from the power conditioner may be connected to the power distribution equipment. [Explanation of Symbols]

[0065] 1. Electrical and electronic equipment 5. Boxes for storing electrical and electronic equipment 11 First terminal section 12 Second terminal section 14 Movable contact 15 Fixed contact 16 Electric wire 17 cases 81 Primary power distribution equipment 82 Secondary power distribution equipment 91 Commercial power supply 92 Power Conditioner 141 Movable contact 151 Fixed contacts

Claims

1. A first terminal section that can be electrically connected to a commercial power supply, A second terminal section that can be electrically connected to the power conditioner, A movable contactor having a movable contact point, A fixed contactor having fixed contacts, A case that houses the movable contact inside, A power switching system comprising electrical and electronic equipment having, The case contains wires connected to the movable contacts, When the movable contact is operated so that it makes contact with or separates from the fixed contact, both the end on the side where the movable contact is located and the end on the opposite side are movable. The connection point between the movable contact and the wire is a power utilization switching system that is movable within the case when the movable contact is operated so that the movable contact makes contact with or disengages from the fixed contact.

2. In the event of a commercial power outage, the movable contacts can be operated to separate from the fixed contacts. The power utilization switching system according to claim 1, which is capable of operating so that a movable contact makes contact with a fixed contact when commercial power is restored.

3. Electrical and electronic equipment, In the event of a commercial power outage, the system can operate so that the movable contacts separate from the fixed contacts based on a signal sent from the power conditioner. The power utilization switching system according to claim 2, which is capable of operating so that when commercial power is restored, the movable contact makes contact with the fixed contact based on the electricity sent to the first terminal.

4. The power utilization switching system according to claim 2 or 3, which, when commercial power is restored, operates the equipment using the electricity sent to the first terminal, and uses the movement of the equipment to operate so that the movable contacts make contact with the fixed contacts.

5. The power utilization switching system according to claim 3, wherein the signals received by the electrical and electronic equipment from the power conditioner and the electricity supplied from the commercial power supply to the first terminal are of different types.

6. The power utilization switching system according to claim 1, comprising a box for housing electrical and electronic equipment in which electrical and electronic equipment is housed.

7. The power utilization switching system according to claim 6, wherein at least one of a primary-side power distribution device connected to the primary side of the electrical and electronic equipment, or a secondary-side power distribution device electrically connected to the secondary side of the electrical and electronic equipment, is housed in an electrical and electronic equipment housing box for housing electrical and electronic equipment.

Images