JP5877612B2 - Power switching system at power failure - Google Patents

Description

  The present invention relates to a power switching system during a power failure that switches between a commercial power supply line and an external power supply line such as a generator during a power failure.

  In the event of an emergency such as an earthquake, the commercial power supply supplied by the power company may stop, making it impossible to use electricity. In such an emergency, it is conceivable to use an external power supply such as a generator. However, when an external power supply line is added in addition to the commercial power supply line, it is necessary to provide a switching device between the two power supply lines. There is.

  Thus, the switching device described above is preferred to be a manual type that switches manually and mechanically because of the simplicity of the structure, but this manual switching device is newly installed with a simple configuration such as lever operation. Attempting to do so will cause the switching device to be exposed, and it may be possible that the switching device is erroneously switched, or that an unintended short circuit occurs due to the entry of dust or the like.

The present invention has been made paying attention to the above-mentioned conventional problems, and an object of the present invention is to provide a protection function to a switching device with a simple manual configuration.
Moreover, this invention makes it the objective to provide the power supply switching system at the time of a power failure provided with the above-mentioned switching apparatus.

The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 is directed to a manual switching device for switching between a commercial power supply line and an external power supply line, and a distribution board. Housed in a housing having a cover body covering the front side, the switching device is a distribution board with a switching device in which a switching lever protrudes from the cover body ,
A power supply switching system at the time of a power failure provided with a control box that is connected to the external power supply line and is provided separately from the casing of the distribution board, and for safely supplying external power to the distribution board, An emergency stop button for forcibly stopping the supply of the external power source by a pressing operation, an abnormality / reset button for restarting the supply of the external power source by a pressing operation, and the external power source are provided on the front surface of the casing of the control box. Power supply switching at the time of power failure, characterized in that a power monitor and an external lamp receiving supply of branch power from a supply line, and a commercial lamp and return buzzer receiving supply of branch power from the commercial power supply line are arranged System .

According to a second aspect of the invention, the power failure power supply switching system according to claim 1, the external power source, the generator, a hybrid car battery, accumulator or a power outage when the power switching system, characterized in a solar cell, is there.

According to the distribution board with a switching device of the present invention, the manual switching device can be protected.
Further, according to the power supply switching system of the present invention, the commercial power supply line and the external power supply line can be switched safely and easily with a simple configuration.

1 is an overall configuration diagram of a power failure switching system according to an embodiment of the present invention. It is a block diagram of the outdoor relay box of FIG. It is a block diagram of the control box of FIG. It is a block diagram of the distribution board with a switching device of FIG. It is an electrical block diagram of the principal part of FIG.

A power failure switching system 1 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the power switching system 1 during a power failure is installed in a building such as a refuge or a house. The power switching system 1 at the time of a power failure includes a generator 3, an outdoor relay box 5, a control box 11, a distribution board 25 with a switching device, and a solar battery 39. The generator 3, the solar battery 39, Is an external power supply that operates in the event of a power failure. The generator 3 is of a transport type, and when the generator 3 is used as an external power source, it is connected to the outdoor relay box 5 with a dedicated cable 41.

  The outdoor relay box 5 is for drawing electricity from the generator 3 indoors. As shown in FIG. 2, a generator power indicator lamp 7 and a commercial power indicator lamp 9 are arranged in front of the housing of the outdoor relay box 5 and the corresponding power is supplied. In addition, the indicator lamp lights up.

  The control box 11 is for safely supplying electricity from the generator 3. As shown in FIG. 3, an electric power monitor 13, a commercial lamp 15, a generator lamp 17, an abnormality / reset button 19, a return buzzer 21, and an emergency stop button 23 are arranged on the front of the housing of the control box 11. Yes. The power monitor 13 displays the amount of power supplied from the generator 3, the commercial lamp 15 is turned on when commercial power is supplied, and the generator lamp 17 is supplied with generator power. The abnormality / reset button 19 is lit when the power is on, the generator power supply is resumed by pressing, and the return buzzer 21 sounds when the commercial power supply is restored. The button 23 forcibly stops the supply of the generator power by a pressing operation, and has a function as a stop means.

The distribution board 25 with a switching device is a part that particularly characterizes the present invention. As shown in FIG. 4, the casing includes a box-shaped base 27 that is rectangular and has an open front side, and a front surface of the base 27. A cover body 29 covering the opening side and a door 31 rotatably supported on the upper side of the cover body 29 are configured so that the cover body 29 is exposed when the door 31 is lifted and opened to the front side. It has become.
The cover body 29 is provided with a window hole, and the operation lever of the main breaker 33 and the operation lever of the branch breaker 35 are arranged through the window hole, and further, the external power source side, the commercial power source side, Similarly, the switching lever 37 as a switching device and the switching lever 37 between the generator side and the solar side are also arranged in a state protruding from the window hole.

This distribution board 25 with a switching device is installed by replacing an existing distribution board for commercial power.
The cover body 29 of the housing has a function as a protective plate and prevents entry of external dust and the like. Moreover, the cover body 29 can be removed, and the cable part can be easily replaced by removing the cover body 29. Furthermore, during normal operation, closing the cover body 29 with the door 31 can prevent erroneous operation of the operation lever or the like.
By housing the switching device in this housing and passing the switching lever through the window hole, the switching device can be provided with a protective function similar to that of the leakage breaker or the like. And since it installs replacing the existing distribution board for commercial power supplies, it is not necessary to ensure a new installation location.

The wiring and circuit configurations of the outdoor relay box 5, the control box 11, and the distribution board 25 with a switching device are as shown in FIG. For the convenience of visual recognition, only the wiring on the commercial power supply AC and the generator 3 side is shown, and the wiring on the solar battery 39 side is omitted.
Each power supply line is composed of a single-phase three-wire R phase, S phase, and T phase. The S phase is grounded, and the AC phase between the R phase and S phase and between the T phase and S phase is AC100V, and between the R phase and T phase is AC200V. Show.

In the outdoor relay box 5 for the generator power source, a no-fuse breaker 45 is connected to the generator power supply line 43, and further, power is supplied to the generator power indicator lamp 7 (FIG. 2). Further, power is supplied from the commercial power supply line 47 to the commercial power indicator lamp 9 (FIG. 2) via the branch line.
In the control box 11, branch power is supplied from the generator power supply line 43 to the power monitor 13 and the generator lamp 17 (FIG. 3), and the pressing operation of the emergency stop button 23 (FIG. 3) and power generation are performed. When the capacity is exceeded, the delay switch 61 opens to stop the power supply, and the delay switch 61 is closed by pressing the abnormality / reset button 19 (FIG. 3). On the other hand, branch power is supplied from the commercial power supply line 47 to the commercial lamp 15 and the return buzzer 21 (FIG. 3).

The distribution board with switching device 25 is provided with an existing board 51 for commercial power supply, a power switching system board 53 for power failure, and a dedicated distribution board 55 on the base 27 side.
The commercial power supply line 47 is connected to a no-fuse breaker 57 on the existing panel 51, and this front side is drawn out to the power switching system panel 53 in the event of a power failure, and power is supplied to the switching lever 37 of the switching device arranged there. Is supplied.
On the other hand, the power breaker 59 is connected to the generator power supply line 43 on the power switching system panel 53 during a power failure. Further, a timer circuit (not shown) and a delay switch 61 are provided. When power is supplied to the timer circuit and the delay switch 61 through the earth leakage breaker 59 and the delay time set by the timer circuit elapses, a delay occurs. The switch 61 is closed and power is supplied to the switching lever 37.

Depending on the operation of the switching lever 37 (FIG. 3), either the generator power supply line 43 and the switched power supply line 63 or the commercial power supply line 47 and the switched power supply line 63 are selected. Connected to and conducts.
After switching, the power supply line 63 is connected to the main breaker (no fuse breaker) 33 (FIG. 4) on the dedicated distribution board 55, and further, the branch power supply line is connected via the branch breaker 35 (FIG. 4). Power is supplied to lighting and outlets.

As described above, the distribution board 25 with the switching device includes a power supply during power failure for switching the generator power source, which is an external power source, in addition to the existing board 51 for commercial power supply and the dedicated distribution board 55 for the base 27. It is assembled with the switching system panel 53 added, and the power monitor 13, the commercial lamp 15, the generator lamp 17, abnormality / reset are provided on the separate control box 11 side to protect the generator power supply line 43. Since the button 19, the return buzzer 21, and the emergency stop button 23 are arranged together, the installation work is also easy.
The power switching system 1 at the time of power failure is switched by the switching lever 37 when the use of the external power source is started, but when the commercial power source AC is restored, it is automatically switched back to the commercial power supply line. I can say that.

  The distribution panel for commercial power supply has installation standards from the viewpoint of safety, but currently there is no particular restriction on the emergency external power supply. Although it should be done, the power switching system 1 during a power failure can be safely constructed by configuring as described above.

As described above, the embodiments of the present invention have been described in detail. However, the specific configuration is not limited to these embodiments, and the invention can be changed even if there is a design change without departing from the gist of the present invention. include.
For example, as an external power source, not only a generator but also a hybrid vehicle battery, a storage battery, a solar battery, and the like can be used.

  INDUSTRIAL APPLICABILITY According to the power failure switching system of the present invention, it can be used for a building to which commercial power is supplied such as a shelter or a house in case of an emergency.

DESCRIPTION OF SYMBOLS 1 ... Power supply switching system at the time of a power failure 3 ... Generator 5 ... Outdoor relay box 7 ... Generator power indicator 9 ... Commercial power indicator 11 ... Control box 13 ... Power monitor 15 ... Commercial lamp 17 ... Generator lamp 19 ... Abnormality / Reset button 21 ... Return buzzer 23 ... Emergency stop button 25 ... Distributor panel with switching device 27 ... Base 29 ... Cover body 31 ... Door 33 ... Main circuit breaker 35 ... Branch breaker 37 ... Switch lever 39 ... Solar battery 41 ... Dedicated cable 43 ... Generator power supply line 45 ... No-fuse breaker 47 ... Commercial power supply line 51 ... Existing panel 53 ... Stop power switching system panel 55 ... Dedicated distribution panel 57 ... No-fuse breaker 59 ... Earth leakage breaker 61 ... Delay Switch 63 ... Power supply line after switching AC ... Commercial power

Claims (2)

A manual switching device for switching between a commercial power supply line and an external power supply line and a distribution board are accommodated in a housing having a base and a cover body covering the front side thereof, and the switching device is the cover. A distribution board with a switching device with a switching lever protruding from the body ;
A power supply switching system at the time of a power failure provided with a control box that is connected to the external power supply line and is provided separately from the casing of the distribution board, and for safely supplying external power to the distribution board,
On the front of the control box housing, an emergency stop button that forcibly stops the external power supply by a pressing operation, an abnormality / reset button that restarts the external power supply by a pressing operation,
A power monitor and an external lamp that receive a branch power supply from the external power supply line;
A power supply switching system during a power failure, wherein a commercial lamp and a return buzzer for receiving branch power from the commercial power supply line are disposed. In the power failure switching system according to claim 1,
An external power source is a generator, a hybrid vehicle battery, a storage battery, or a solar battery.

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