KR20020010730A - Circuit breaker with lamp of leakage of electricity - Google Patents

Abstract

PURPOSE: An earth leakage breaker is provided to allow users and managing person to easily recognize the occurrence of electric leakage by operating a leakage indicator lamp attached to the breaker. CONSTITUTION: An earth leakage breaker(10) comprises a power unit(60), a load unit(40), an electric leakage detection unit, a driving unit, a test unit(20), a cut-off unit(30), an amplifier unit, and a leakage indicator lamp(50). The power unit(60) receives power. The load unit(40) supplies current to the load. The electric leakage detection unit detects electric leakage. The driving unit drives a switch upon detection of electric leakage. The test unit(20) tests an operation of the earth leakage breaker. The cut-off unit(30) prevents connection between the power unit and load. The amplifier unit is connected to circuit lines lead out from two terminals of the circuit of the driving unit, and connected to terminals of the power unit. And the leakage indicator lamp(50) is turned on by the current output from the amplifier unit.

Description

CIRCUIT BREAKER WITH LAMP OF LEAKAGE OF ELECTRICITY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in earth leakage circuit breaker, and more particularly, to an earth leakage circuit breaker having an earth leakage display lamp which displays a state in which a lamp is turned on when the power supply to the load side is interrupted due to an electric leakage.

In general, an earth leakage breaker is a device which is installed in a distribution panel forming an AC low voltage circuit and is used for the purpose of preventing an electric shock of a human body, a fire caused by an electric leakage, and a safety accident caused by an overcurrent and a short circuit.

Hereinafter, the structure and operation principle of the earth leakage breaker will be described and the problems with the conventional technology.

With reference to the accompanying drawings will be described in detail the problem according to the prior art.

When the ground circuit breaker unit 1 and the wiring circuit breaker 2, which cut off the short circuit, are placed in contact with each other, the unit power terminal 3 and the load terminal 4 formed on one side of the ground circuit breaker unit 1 are wires for supplying power. The unit power terminal 3 and the load terminal 4 are connected by being fastened by a plurality of terminal screws 5 connected to each other.

Conventionally, in the structure of the ground fault circuit breaker as described above, the state of the ground fault at the time of occurrence of a ground fault at the load side can be seen by the switch of the ground fault breaker, which is displayed as off and on. Therefore, a problem occurred when a short circuit state of the earth leakage breaker could not be recognized visually.

The technical problem to be achieved by the present invention is to attach a ground fault indicator lamp to the load portion of the ground fault breaker in order to clarify the ground fault check indication to be able to immediately check the ground fault.

1 is a perspective view of the prior art;

2 is a circuit breaker with a ground fault indicator lamp according to an exemplary embodiment of the present invention.

3 is a detailed circuit diagram of the earth leakage breaker of FIG. 2;

****** Describes the parts of the main part of the drawing ******

10: leakage circuit breaker, 20: test button,

30: breaking part, 40: load part,

50: short circuit indicator lamp.

According to an embodiment of the present invention, an earth leakage circuit breaker including an earth leakage display lamp includes: a power supply unit receiving current from a power source, a load unit supplying current to a load, and a leakage detection unit detecting a leakage current outside the breaker; In the earth leakage circuit breaker including a drive unit for operating the switch when detecting the leakage current, a test unit for testing the leakage operation,

An electric leakage display lamp comprising: an amplifier connected with circuit lines drawn from two terminals of the driver circuit and an amplifier connected with a circuit line connected to the power supply terminal, and an electric leakage display lamp lit by a current output from the amplifier unit; Earth leakage breaker with lamp.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For the implementation of the embodiment according to the present invention, Figures 2 and 3 will be described together.

2 is a circuit breaker built in a lamp according to the present invention.

Referring to FIG. 2, the earth leakage breaker 10 displays a power supply unit 60 that receives power, a load unit 40 that is a terminal connected to a load side, and a display when a short circuit occurs adjacent to the load unit 40. On the lamp 50 for display, the breaker 30 which cuts off the connection between the power supply 60 and the load according to the detection result of the leakage current detector 77, and the adjacent surface of the breaker 30 The test unit 20 that can test the presence or absence of the circuit breaker 10 is shown.

Wherein the lamp is preferably a light emitting device such as an LED, the location of the lamp is located in the embodiment adjacent to the load portion, but may be conveniently located anywhere on the surface of the earth leakage breaker body. In addition, the LED, which is a light emitting element, is used to notify a user of an accident of a short circuit on the load side, so a buzzer may be used in a closed place.

3 is a detailed circuit diagram of the interior of the earth leakage breaker of FIG. 2.

Referring to FIG. 3, the power supply terminals 80 and 80 'supplying power to the earth leakage breaker, the load terminal terminals 79 and 79' supplying power to the load side, and the earth leakage current detecting means 77 are detected. First amplification means 76 for amplifying the induced current to a predetermined power source, and an operation means for exciting the current amplified by the first amplification means 76 in the trip coil 75 to operate the switch. The bimetal 78 is thermally deformed by the resistance of the short-circuit current to drive the trip mechanism 75, and is connected to the circuit line of the trip coil 75 and the first amplifier 76, and also with the terminal on the power supply side. A second amplifying unit 73 connected to each other, and a ground fault indicator lamp 74 connected to the second amplifying unit 73 are characterized in that it comprises.

Therefore, when a leakage current is generated from the load circuit, it is detected by the leakage current detecting means 77 which is an image current device, and the detected current is amplified by the first amplifier 76 and flows to the trip coil so that the trip coil 75 On the other hand, the amplified current flowing along the circuit line between the trip coil 75 and the amplifier 76 is amplified in the second amplifier 73, and eventually, the lamp 74 connected to the second amplifier 73 Lights up. Here, the amplifier is also connected to the power supply side.

Although the invention has been particularly shown and described with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications are possible without departing from the spirit and scope of the invention. Accordingly, the invention is limited only by the claims.

As described above, the present invention makes it possible to easily recognize the occurrence of a short circuit by allowing the buzzer to operate when the short circuit occurs, thereby displaying the blocking state of the breaker to the outside.

Therefore, the user and the electric manager can recover quickly and prevent unnecessary power failure, and can solve the problem quickly and save time.

Claims (6)

A power supply unit receiving current from a power supply, a load unit supplying a current to the load, a leakage unit detecting a leakage current outside the circuit breaker, a driver unit operating a switch when detecting the leakage current, a test unit capable of testing whether or not the leakage unit is operated In the earth leakage breaker comprising: An electric leakage display lamp comprising: an amplifier connected with circuit lines drawn from two terminals of the driver circuit and an amplifier connected with a circuit line connected to the power supply terminal, and an electric leakage display lamp lit by a current output from the amplifier unit; Earth leakage breaker with lamp. The circuit breaker of claim 1, wherein the ground fault indicator lamp is a fluorescent lamp such as an LED. The earth leakage breaker with the earth leakage display lamp according to claim 1, wherein the earth leakage display lamp uses a buzzer. 3. The earth leakage breaker with the earth leakage display lamp according to claim 2, wherein the position of the earth leakage display lamp is adjacent to the load side. 2. The circuit breaker of claim 1, wherein the amplifier is drawn at a circuit line between the trip coil and the amplifier. The ground fault interrupter of claim 1, wherein the ground fault indication lamp is capable of simultaneously using a lamp which can be identified by a user and a buzzer.