JPS58126634A - Switch with leakage indicator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch incorporating and integrating an earth leakage indicator.

Generally, when a current leak occurs in an electric circuit, there is a risk of a major accident unless the location of the current leak is discovered early and a plan is taken.

The conventional methods for detecting leakage points can be divided into three types, and their problems are as follows.

1. A method of finding the current leakage WA path by sequentially opening and closing the split drum excitation path and stopping the earth leakage alarm buzzer.

This method involves power outage operations, and it is difficult to find the location of an intermittent electrical leakage accident.

2- Installing the WAIIliK ground fault relay is a method of finding the leakage path by displaying the ground fault relay's operation.

This requires a complex circuit, high cost, and requires a lot of attention.

3. Method of using an interrupter due to electrical leakage.

Electrical leakage interrupters are not suitable for some types of equipment because electrical leakage immediately leads to a power outage, which can cause the equipment to malfunction or the products that are being sold using the equipment to be defective.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art and to provide a switch with an earth leakage indicator that can detect and locate an earth leakage point without causing a power outage due to the indication of the earth leakage indicator.

To achieve this objective, the present invention integrates a leakage indicator into a switch with overload short-circuit protection.

Hereinafter, the present invention will be explained in detail according to an embodiment shown in the drawings.

Fig. 1 is a circuit diagram showing an example of an electric path incorporating a switch with an earth leakage indicator according to #4 of the present invention, and Fig. 2 is a circuit diagram showing an example of an electric path incorporating a switch with an earth leakage indicator according to the invention #4. FIG. 2 is a schematic configuration diagram of an example of quantity.

In this embodiment, 1 is a fatigue device, 2 is an earth leakage alarm,
3 is a buzzer, and 4 is an IIm device with an earth leakage indicator.

As shown in Fig. 1s2, this 11111114 with earth leakage indicator has a self-holding 2 manual reset earth leakage indicator 7 for the earth leakage detection unit 6 connected to the switch 5 with overload short-circuit protection.
are connected.

Next, the operation of this embodiment will be explained. In other words, if an earth leakage accident occurs in the secondary circuit of transformer I#l, earth leakage alarm 1 will be activated.
12 buzzer 3 sounds, and at the same time, the earth leakage indicator 7 of @4 with earth leakage indicator used for the branch road displays the earth leakage, so the earth leakage display allows the earth leakage path to be discovered without power outage. Since the earth leakage display I#7 of this embodiment has self-holding 2 manual reset, the earth leakage path can be easily determined even in the case of an intermittent earth leakage accident.

In addition, when this switch with an earth leakage indicator is used for each electric circuit and each electric machine 11, each earth leakage circuit and earth leakage device can be easily and reliably determined, which is very useful for the safety of electrical equipment.

As explained above, according to the present invention, the following effects can be obtained by incorporating and integrating an earth leakage indicator into a switch with overload short-circuit protection.

1. It is possible to provide the same function of selecting earth leakage circuits without installing a ground fault relay on each foot.

2. In addition to overcurrent short circuit protection, it can also monitor electrical leakage accidents.

3. Earth leakage circuits can be easily and reliably discovered without power outage.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an example of an electric circuit incorporating a switch with an earth leakage indicator according to the present invention, and FIG. 2 is a schematic diagram of an embodiment of the switch with an earth leakage indicator according to the invention. 1...Transformer, 2...Earth leakage alarm, 3...Buzzer, 4...Switch with earth leakage indicator, 5...ll1m19 device with overload short circuit protection, 6...Earth leakage Detection unit, 7...
・Earth leakage indicator. Figure 1 Figure 2

Claims (1)

[Claims] 1. IIm with overload short circuit protection! - A switch with an earth leakage indicator that is integrated with an earth leakage indicator. 2. The switch with an earth leakage indicator as set forth in claim 1, wherein the earth leakage indicator is self-retaining once displayed and manually reset. 3. The switch with an earth leakage indicator as set forth in claims 1 and 2, wherein the earth leakage indicator only displays an earth leakage indication.