JPH06339205A - Emergency automatic illumination distribution board - Google Patents

Abstract

PURPOSE:To facilitate inspection, maintenance at the time of power interruption by providing a lamp for a panelboard through a relay, and lighting the lamp even if a current limiter or a ground-fault circuit breaker is operated. CONSTITUTION:Since a current flows through a secondary side bus E of a ground-fault circuit breaker 2 when the circuit is normal, a magnetic force is generated in a holding circuit 7 of a relay 4 to hold a b-contact 6 open. While the contact 6 is open, the current from a power source does not flow through a small lamp 5, and hence the lamp 5 is not lit. When a current limiter 1 or the breaker 2 is operated due to excessive use of an electric apparatus or a trouble in the apparatus to cut off a circuit thereby to cause the power source to be interrupted, no current flows through the bus E of the breaker 2. Accordingly, the force is not generated in the circuit 7, and the contact 6 is closed. As a result, the current of the power source flows from the primary side of the limiter 1 to the lamp 5 through the closed contact 6, and the lamp 5 is lit. Therefore, the area of the panelboard board B is illuminated at night to facilitate inspection, maintenance at the time of power interruption.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board installed in a home and automatically illuminated in an emergency.

[0002]

2. Description of the Related Art Conventionally, a current limiting device (installed by a power company) and an earth leakage breaker are installed on a distribution board installed in an apartment, a dwelling unit, or the like. The current limiter interrupts the circuit when the maximum usage current value exceeds a predetermined contract current value due to overuse of electric equipment. The earth leakage breaker interrupts the circuit when electricity leakage occurs due to equipment failure or the like.

[0003]

In the conventional distribution board, when the current limiter or the earth leakage breaker has been activated due to overuse of electric equipment in the home or failure of the equipment during darkness at night, the circuit is broken. Is cut off and the surrounding area becomes dark. In this case, the power distribution board is illuminated with a flashlight, a candle, or the like to perform the return operation of the current limiter or the earth leakage breaker, or if the flashlight or the candle is not found, the return operation is performed by hand.

Therefore, the present invention has been made in view of the above-mentioned problems of the prior art, and the object thereof is that the current limiter of the distribution board or the earth leakage breaker is activated at night. Even in this case, it is to make maintenance and inspection easy.

[0005]

In order to achieve the above object, the present invention provides a current limiter for shutting off the circuit when the maximum current value used exceeds a predetermined current value, and a current limiter of the current limiter. In a distribution board having a leakage breaker connected to the secondary side and breaking the circuit at the time of leakage, a holding circuit connected to the secondary bus bar of the leakage breaker, and one end connected to the primary side of the current limiter, When the circuit is normal, it is opened by the holding force of the holding circuit, and has a relay that has a contact that closes when the circuit is cut off, and is connected to the other end of the contact of this relay, and the contact that is closed when the circuit is cut off And a lamp that is supplied with a power supply current and is turned on.

[0006]

In the above invention, the lamp is attached to the distribution board via the relay so that the lamp is turned on when the current limiter or the earth leakage breaker is activated to cut off the circuit. As a result, even if the current limiter or earth leakage breaker of the distribution board is activated at night, the lamp will turn on and the illuminance around the distribution board will be automatically secured. Easy to do. Specifically, the relay is provided with a contact (b contact) and a holding circuit (electromagnetic circuit). One end of this contact is connected to the primary side of the current limiter and the other end is connected to the lamp.
Further, the holding circuit is connected to the secondary side bus bar of the earth leakage breaker. When the circuit is normal, a current is flowing through the secondary bus of the earth leakage breaker, so a holding force (magnetic force) is generated in the holding circuit (electromagnetic circuit) and the contacts are open. If the current limiter or earth leakage breaker is activated and the circuit is cut off due to overuse of electric equipment or equipment failure, current does not flow to the secondary bus of the earth leakage breaker, so the holding circuit holds it. No force is generated and the contacts are closed. As a result, the power supply current is supplied from the primary side of the current limiter to the lamp through the closed contact, and the lamp is lit. As described above, in the present invention, the distribution board itself is provided with the lamp (maintenance light) which is automatically turned on at the time of a power failure due to the operation of the main switch, so that the maintenance and the inspection can be easily performed.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an emergency automatic illumination distribution board of the present invention, and FIG. 2 is a side view. FIG. 3 is a circuit diagram of the emergency automatic illumination distribution board of the present invention. The distribution board B is installed at a predetermined position in the home, and a box C is provided with a current limiter 1, an earth leakage breaker 2, a plurality of branch breakers 3, a relay 4, and a small lamp 5, respectively. There is. The distribution board B is attached via a cover D so as to be openable and closable.

The current limiter 1 shuts off the circuit when the maximum current value to be used exceeds a predetermined contract current value. To the secondary side of the current limiter 1, an earth leakage breaker 2 is connected which shuts off the circuit when the equipment fails and electricity leakage occurs. Further, a plurality of branch breakers 3 are connected to the secondary side bus bar of the earth leakage breaker 2. Further, the relay 4 is connected to the primary side of the current limiter 1 and the secondary side bus of the earth leakage breaker 2.

Further, a small lamp 5 is connected to the relay 4. An enlarged view of this small lamp 5 is shown in FIG.
It shows in (b). As the small lamp 5, for example, an incandescent bulb (100V, 10W) is used. By turning on the small lamp 5, even when the current limiter 1 or the earth leakage breaker 2 of the distribution board B is activated at night, the illuminance around the distribution board B is automatically secured. ,
Easy maintenance and inspection in case of power failure.

Further, as shown in FIG.
A b-contact 6 and a holding circuit (electromagnetic circuit) 7 are provided. One end 61 of the b-contact 6 is connected to the primary side of the current limiter 1, and the other end 62 is connected to the small lamp 5. Further, the holding circuit 7 is connected to the secondary side bus E of the earth leakage breaker 2. The b contact 6 is open when the circuit is normal, and closed when the circuit is cut off. When the b-contact 6 is closed, the power source current flows to the small lamp 5 through the closed b-contact 6 to light the small lamp 5. On the other hand, when the b contact 6 is in the open state, the power source current does not flow through the small lamp 5, so the small lamp 5 does not light.

Finally, the operation of the present invention will be described. First,
When the circuit is normal, a current is flowing through the secondary-side bus E of the earth leakage breaker 2, so that a holding force (magnetic force) is generated in the holding circuit 7 of the relay 4 and the b-contact 6 is kept open. This b
When the contact 6 is in the open state, the power source current does not flow to the small lamp 5, so that the small lamp 5 does not light.

When the current limiter 1 or the earth leakage breaker 2 is activated and the circuit is cut off due to overuse of electric equipment or equipment failure (during a power failure), the secondary side bus bar E of the earth leakage breaker 2 is connected. Since no current flows, no holding force is generated in the holding circuit 7, and the b-contact 6 is closed. As a result, the power supply current flows from the primary side of the current limiter 1 to the small lamp 5 through the closed b contact 6, and the small lamp 5 is turned on. Therefore, even if the current limiter 1 or the earth leakage breaker 2 of the distribution board B operates at night, the small lamp 5 lights up and illuminates the surroundings of the distribution board B. Inspection can be performed easily.

[0013]

According to the present invention, the lamp is attached to the distribution board via the relay, and the lamp is turned on when the current limiter or the earth leakage breaker is activated to cut off the circuit. Even if the current limiter or the earth leakage breaker of the distribution board is activated at night, the illuminance around the distribution board is automatically secured, and maintenance and inspection at the time of power failure can be easily performed.

[Brief description of drawings]

FIG. 1 is a front view of an emergency automatic illumination distribution board of the present invention.

2 (a) is a side view of an emergency automatic illumination distribution board of the present invention, and FIG. 2 (b) is an enlarged view of part A of FIG. 2 (a).

FIG. 3 is a circuit diagram of an emergency automatic illumination distribution board of the present invention.

[Explanation of symbols]

 B distribution board 1 current limiter 2 earth leakage breaker 3 branch breaker 4 relay 5 small lamp 6 b contact 7 holding circuit

Claims (1)

[Claims] 1. A current limiter for interrupting the circuit when the maximum current value used exceeds a predetermined current value, and an earth leakage breaker connected to the secondary side of the current limiter for interrupting the circuit at the time of electricity leakage. In the distribution board having, the holding circuit connected to the secondary bus of the earth leakage breaker, and one end is connected to the primary side of the current limiter, the circuit is in the open state by the holding force of the holding circuit when the circuit is normal, the circuit A relay having a contact that is closed when cut off, and a lamp that is connected to the other end of the contact of the relay and that is lit by being supplied with a power supply current through the contact closed when the circuit is cut off. Emergency automatic lighting distribution board.