JPH10309008A - Distribution board with earthquake-sensing breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board with an earthquake-sensing breaker which supplies power to lighting fixtures, etc., having less probability of causing consequential accidents arising from electricity as long as power is fed to the distribution board and prevents secondary troubles which may arise from a power failure (darkness) especially in the night, when the main breaker of the distribution board is caused to operate by the occurrence of a great earthquake causes. SOLUTION: In a distribution board with an earthquake-sensing breaker, a relay unit 4 made up of relays having an a-contact arrangement is incorporated inside the distribution board and a relay coil part is connected to the negative side of a main breaker 1 incorporated in the same distribution board. In addition to the circuit above, a circuit is provided which connects a load device to the power supply side terminals of the main breaker 1 and a contact of the relay is connected to a portion of one of two electric wires of this circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial application field] Even if a major earthquake such as furniture collapses occurs at night and the main breaker of the distribution board shuts off and a power failure occurs, a power failure (darkness) such as a person tripping over and falling over The present invention relates to a distribution board with a seismic breaker that turns on a lighting device to prevent a secondary accident caused by the above.

[0002]

2. Description of the Related Art Conventionally, when an earthquake exceeding a preset seismic intensity occurs, a main breaker incorporated in a distribution board cuts off to prevent a secondary disaster caused by electricity such as an electric fire. There was a distribution board.

[0003]

However, when a major earthquake that causes furniture to fall down at night occurs and the main breaker of the distribution board shuts off, the power goes out and the room becomes completely dark,
It is very inconvenient to evacuate to other places, and even if something falls on the aisle, it is very dangerous that a person may trip on it and get injured.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, when such a large earthquake occurs and a main breaker of a distribution board is turned off, as long as electricity is supplied to the distribution board, a secondary disaster occurs with respect to electricity. An object of the present invention is to provide a distribution board with a seismic breaker that supplies electricity to a lighting device or the like with a low probability and prevents a secondary accident caused by a power outage (darkness) especially at night.

[0005]

According to the present invention, there is provided a seismic sensor unit incorporated in a distribution board comprising a case and a panel. In a distribution board with a seismic sensing breaker that has a structure in which the main breaker also incorporated in the distribution board is shut off by a signal from the seismic sensor unit, a relay with a contact specification (the contact turns on when the relay coil has no voltage) A relay unit including a relay unit, and a relay coil unit connected to a load side of the main breaker, and a circuit connected to a load device from a power supply side terminal of the main breaker separately from the circuit. And connecting the contact point of the relay in the middle of one of the two electric wires of the circuit, and mounting a lighting device such as an emergency light as a load device. Has a structure that can.

[0006]

[Function] When an earthquake occurs, the seismic sensor installed inside the distribution board detects the seismic intensity, and when the seismic intensity exceeds a preset value, the seismic sensor unit is also installed inside the distribution board. An interruption signal is output to the main breaker that has been set. Upon receiving the cutoff signal, the main breaker performs a cutoff operation instantaneously by a built-in trip coil device, and cuts off a circuit, such as a heater, connected to the load, for generating a secondary electric fire or the like, and the main breaker is electrically operated. Although it prevents the occurrence of the next disaster, it also causes a total blackout including the lighting circuit, so if an earthquake occurs at night, it will be completely dark. At this time,
In the power distribution panel of the present invention, the relay coil of the relay unit connected to the load of the main breaker becomes non-voltage by the shut-off operation of the main breaker, the relay contacts are turned on, and the relay contact is connected to the power supply side of the main breaker. It supplies electricity to the lighting circuit, such as an emergency light, to prevent the occurrence of a secondary accident due to a power outage (darkness). In a normal state, the main breaker is in the ON state, so that a voltage is applied to the relay coil connected to the load side, and the relay contact is turned off.
The lighting equipment such as the emergency light is kept off in the FF state. In addition, according to the present invention, not only when an earthquake occurs, but also when a main breaker of a distribution board shuts off due to excessive use of electricity or earth leakage, an emergency light or other lighting device is similarly turned on to cause an accident due to a power failure. Can be prevented.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram to which claim 1 of the present invention is applied. Reference numeral 1 denotes a main breaker incorporated in a distribution board. A commercial power supplied from outside is connected to a power supply side (not shown) via a power meter, and each electric device (not shown) is connected to a load side. (Not shown) is connected to the branch breaker 2. The main breaker has a built-in function (trip coil device) that performs an instantaneous shutoff operation based on a signal from the seismic sensor unit 3. (Not shown) 3 is a seismic sensor unit, and the seismic sensor incorporated therein is set so as to operate according to the magnitude (seismic intensity) of the earthquake. A signal for shutting off the main breaker is output. Power to the seismic sensor unit is supplied from the load side of the main breaker as in the case of the branch breaker. Reference numeral 4 denotes a relay unit in which a relay 5 is incorporated. The power of the relay unit is supplied from the load side of the main breaker as in the case of the branch breaker and the seismic sensor unit. Applied to the coil. One of the relay contacts 6 of the relay unit is connected to the power supply L1 pole of the main breaker, and the other of the relay contacts 7 is connected to one of load devices such as lighting equipment. The other of the load devices is
It is connected to the power supply N pole of the main breaker.

Next, the operation will be described. When an earthquake occurs, a seismic sensor incorporated in the seismic sensor unit 3 determines the magnitude (seismic intensity) of the earthquake, and when the set value is exceeded, the seismic sensor unit operates to activate the main breaker 1 of the distribution board. A lead wire 8 pulled out from one end of a trip coil of a trip coil device (not shown) incorporated in
A voltage is applied to the trip coil, which is connected to two poles and the other end of which is connected to the N pole inside the main breaker, and the trip coil device operates to cut off the main breaker. When the main breaker is turned off, the power supply to the load is stopped, the seismic sensor unit is automatically reset, and the power supply to the load device (not shown) of the branch breaker 2 is also stopped, so that the total power failure occurs. Become. However, in the present invention, when the main breaker performs a cutoff operation, the power supply to the relay unit 4 is also stopped at the same time, and the relay coil is set to no voltage.
Then, power is supplied from a power source side of the master breaker to a load device such as an emergency light (not shown), and the lighting apparatus is turned on.
Secondary accidents due to power outages can be prevented.
At normal time, the main breaker is in ON state.
A voltage is applied to the relay coil connected to the load side, the relay contact is kept in an OFF state, and the lighting equipment such as the emergency light is in a light-off state. Further, even when the main breaker performs a breaking operation due to an overcurrent or a short circuit, an illuminating device such as an emergency light can be turned on in the same manner as described above to prevent an accident.

FIG. 2 is a diagram to which claim 2 of the present invention is applied. A circuit breaker 9 is arranged between the main breaker 1 and the relay unit 4 shown in FIG. 1, and the other configuration and operation are the same as those of the first aspect.

FIG. 3 is a diagram to which claim 3 of the present invention is applied. A circuit breaker 10 is arranged between a relay unit 4 and a lighting device (not shown) such as an emergency light shown in FIG. 1, and other configurations and operations are the same as those of the above-described claim 1. is there.

[0012]

According to the present invention, a lighting device such as an emergency light is instantly turned on in the event of an earthquake or when a power failure occurs due to a cut-off operation of a main breaker of a distribution board due to overcurrent or leakage. This has the effect of preventing an accident due to a power outage (darkness) especially at night.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of Embodiment 1 of the present invention.

FIG. 2 is an explanatory view of a second embodiment of the present invention.

FIG. 3 is an explanatory view of a third embodiment of the present invention.

FIG. 4 is a circuit diagram of a relay unit according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main breaker 2 Branch breaker 3 Seismic sensor unit 4 Relay unit 5 Relay 6 Relay contact (a) 7 Relay contact (c) 8 Lead wire 9 Circuit breaker 10 Circuit breaker

Claims (3)

[Claims] A seismic sensor unit is built in a distribution board consisting of a case and a panel, and a main breaker also built in the distribution board by a signal from the seismic sensor unit when an earthquake exceeding a set seismic intensity occurs. In a distribution board with a seismic breaker that has a structure that shuts off the relay, a contact (a contact is ON when the relay coil has no voltage)
A relay unit including a relay unit, and a relay coil unit connected to a load side of the main breaker, and a circuit connected to a load device from a power supply side terminal of the main breaker separately from the circuit. And a structure in which a contact point of the relay is connected in the middle of one of the two electric wires of the circuit, and a lighting device such as an emergency light can be attached as a load device. Distribution board with earthquake breaker. 2. The distribution board with a seismic breaker according to claim 1, wherein a circuit breaker is provided between the main breaker and the relay unit in a circuit connected to the load equipment such as the lighting equipment. 3. The power distribution circuit with a seismic breaker according to claim 1, wherein a circuit breaker is provided between the relay unit and the load equipment such as the lighting equipment in the circuit connected to the load equipment such as the lighting equipment. Board.