KR100674246B1 - Monolithic apparatus for measuring earth resistance and supplying power - Google Patents

Abstract

An integral device capable of measuring an earth resistance and supplying power is provided to supply power for temporal work in a dangerous place and to prevent an electric shock and a fire due to electricity. An integral device capable of measuring an earth resistance and supplying power includes an earth resistance tester(10) measuring the earth resistance by using an auxiliary earth bar(20) and a reel(30); the auxiliary earth bar coupled to the ground to measure the earth resistance; the reel made from duralumin and electrically coupled with a switch(40); the switch connected to the reel and switched according to the earth resistance measuring state and the power supply state; an earth leakage breaker(50) cutting off the electric path if the current supplied from the switch exceeds a predetermined admissible value; and a plug socket comprising a plug socket(80A) for 220V and a plug socket(80B) for 110V feeding power supplied through the reel, the switch, and the earth leakage breaker.

Description

Monolithic apparatus for measuring earth resistance and supplying power

1 is a block diagram of an integrated device capable of measuring ground resistance and supplying power according to an embodiment of the present invention.

2 is a block diagram of the auxiliary ground rod according to an embodiment of the present invention.

Figure 3 is a side view of the reel according to an embodiment of the present invention.

4 is a diagram conceptually illustrating a state in which an auxiliary grounding rod and a ground ohmmeter are connected through a reel according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: earth resistance meter 20: auxiliary earthing rod

20A: 1st auxiliary ground rod 20B: 2nd auxiliary ground rod

20C: 3rd Auxiliary Ground Rod 21A: 1st Ground Wire

21B: second ground wire 21C: third ground wire

22: first outlet 34: second outlet

220P: 1st plug 110P: 2nd plug

30: reel 31: reel wire

32: handle 33: bearing

35: stopper 40: switch

50: earth leakage breaker 60: transformer

70: fuse holder 80A: 220V outlet

80B: 110V outlet 90: LED

100: relay 101: relay contact

The present invention relates to a device capable of measuring ground resistance and supplying power, and more particularly, to integrate a power supply and a ground resistance measuring device in preparation for electric shock, ground fault and short-circuit accident, and to supply power to temporary work in a place that is vulnerable to safety. The present invention relates to an integrated device capable of supplying ground resistance measurement and power supply.

In general, when measuring the ground resistance and supplying power when working, there was a problem in that the auxiliary ground rod and lead wire, grounding resistance meter, mobile outlet, power supply voltage transformer and earth leakage breaker accordingly.

In addition, a mobile outlet or a reel for a power supply does not have an ability to detect itself even if an electric leakage or ground fault occurs, and an electric leakage breaker installed in the distribution board may be operated to prevent electric shock disaster. However, some breakers that are commercially available in recent years, because of the high operating current range could not completely prevent an electric shock.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and by simply integrating a device for measuring ground resistance and a device for supplying power as described above, for a test requiring a double power supply such as a relay test, and the like. It is to provide an integrated device capable of measuring ground resistance and supplying power for temporary work in places where power and safety are vulnerable.

Another object of the present invention is to provide an integrated device capable of measuring ground resistance and supplying power, which can prevent an electric shock accident and an electric fire by using an earth leakage breaker operating below a human electric shock protection allowance.

The present invention for achieving the above object, relates to an integrated device capable of measuring the ground resistance and power supply, a ground resistance meter for measuring the ground resistance using the auxiliary ground rod and reel; An auxiliary ground rod connected to the ground to measure ground resistance; A reel made of duralumin and electrically connected to the following switch; A switch connected to the reel and switched according to ground resistance measurement and power supply; An earth leakage circuit breaker for disconnecting the electric current when the current drawn from the switch exceeds a predetermined allowable amount; And a 220V outlet and a 110V outlet for supplying power drawn through the reel, the switch, and the circuit breaker; Characterized in that it comprises a.

Preferably, the integrated device capable of measuring ground resistance and supplying power includes: a fuse holder for protecting the circuit from the effects of overcurrent drawn through the reel; Characterized in that it further comprises.

Also preferably, the integrated device capable of measuring ground resistance and supplying power may include: an LED capable of confirming whether or not the power is pressurized; And a relay for preventing an electric shock and burnout of the ground resistance meter. It characterized in that it further comprises.

More preferably, the auxiliary earthing rod may include: a first auxiliary earthing rod and a second auxiliary earthing rod which are spaced apart by a predetermined distance and connected to a ground at a predetermined depth; A third auxiliary ground rod having a predetermined length and screwed to a lower end of the second auxiliary ground rod; A first ground wire and a second ground wire electrically connecting the first auxiliary ground rod and the second auxiliary ground rod; And a first outlet positioned at the center of the first ground wire and the second ground wire, and connected to the first plug. Characterized in that it comprises a.

Also preferably, the reel may have a predetermined length, the reel wire having a first plug at an end thereof to receive power from a power supply source, and to be connected to a first outlet of the auxiliary ground rod to measure a ground resistance; A handle and a bearing for winding and unwinding the reel wire; A second outlet connected to the switch; And a stopper positioned at a lower right side of the reel to prevent tangling when the reel wire is released. Characterized in that it comprises a.

Also preferably, the switch may include a second plug electrically connected to a second outlet of the reel; Characterized in that it comprises a.

Also preferably, the second outlet and the second plug may be separated from each other when the reel wire is wound and unwound.

And preferably, the predetermined allowable amount is 11 mA to 15 mA.

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

A configuration of an integrated device capable of measuring ground resistance and supplying power according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIG. 1, the integrated device capable of measuring ground resistance and supplying power includes a ground resistance meter 10, an auxiliary ground rod 20, a reel 30, a switch 40, an earth leakage breaker 50, and a transformer 60. ) And an outlet 80.

The ground resistance meter 10 measures the ground resistance by using the reel wire provided in the auxiliary grounding rod 20 and the reels 30, and in the present invention, a ground resistance meter conventionally used is used.

As shown in FIG. 2, the auxiliary earthing rods 20 connected to the earth for measuring the ground resistance are spaced apart by a predetermined distance, and the first auxiliary earthing rods 20A and the second auxiliary earthing rods connected to the earth at a predetermined depth (see FIG. 2). 20B) and a third auxiliary ground rod 20C that is threadedly coupled to the lower end of the second auxiliary ground rod 20B.

Here, the distance between the first auxiliary grounding rod (20A) and the second auxiliary grounding rod (20B) is 5 ~ 10m, the first ground wire (21A) and the second ground wire (2A) electrically connecting the two auxiliary ground rods (20A, 20B) 21B) and a first outlet 22 positioned at the center of the two ground wires 21A and 21B and connected to the first plug 220P of the reel 30 below.

The reel 30, which is a characteristic aspect of the present invention, is made of duraluminum, and has a reel wire 31 of a predetermined length, a handle 32 and a bearing 33, a second outlet 34 and a stopper for winding and unwinding the reel wire. (35).

The reel wire 31 is connected to the first outlet 22 of the auxiliary grounding rod 20 to receive power from a power supply source of the workplace through the first plug 220P provided at the end of the reel wire, and to measure the ground resistance. It is desirable to understand this as an integrated code that allows you to: Although the length of the reel wire 31 is set to 25 m in this embodiment, the present invention is not limited to the length.

In addition, the second outlet 34 is electrically connected to the second plug 110P provided at the end of the switch 40 below, and when the reel wire 31 is unwound and wound, the second plug 110P and the second outlet (34) is used separately.

And the stopper 35 is located on the right side of the lower end of the reel 31, as shown in Figure 3, to prevent tangling when the reel wire 31 is released.

The switch 40 includes a second plug 110P provided at an end thereof, and as described above, is electrically connected to the second outlet 34 and switched to ON or OFF depending on ground resistance measurement and power supply. do.

When the switch is turned ON, power can be supplied from a separate power supply source through the first plug 220P of the reel 30, and when turned OFF, the first plug 220P is connected to the first ground wire 21A. And the first outlet 22 located at the center of the second ground line 21B to measure the ground resistance.

The earth leakage breaker 50 is designed with an overcurrent protection circuit, and when the current drawn from the switch 40 exceeds the human electric shock protection allowable amount (0.03 seconds), that is, a predetermined allowable amount, the overload breaker operates to supply power. If there is a ground fault or short-circuit, shut off the converter quickly. In this embodiment, the predetermined allowable amount is set to 11 mA to 15 mA, preferably 13 mA, but the present invention is not limited thereto.

Transformer 60 is a lottery-type step-down transformer, step-down voltage 220V introduced into 110V.

The outlet 80 includes a 220V outlet 80A and a 110V outlet 80B for supplying power drawn through the reel 30, the switch 40, the ground fault breaker 50, and the transformer 60.

In addition, the fuse holder 70 to protect the circuit from the influence of the over-current introduced through the reel 30 and the red light is turned on when the power is turned on, the LED 90 can be further confirmed whether the power supply is pressed. have.

In addition, the relay 100 may further include an electric shock prevention and a burnout of the ground resistance meter 10. In detail, while supplying power in accordance with the switch (ON) of the switch 40, when switching the switch 40 for the ground resistance to the OFF state, it may cause an electric shock and burnout of the ground resistance meter (10) have. Accordingly, by using the relay contact 101 for the ground-side wire as shown in FIG. 1, even if the switch 40 is immediately turned OFF during power supply, an electric shock accident and burnout of the ground resistance meter can be prevented.

Hereinafter, an operation example of an integrated device capable of measuring ground resistance and supplying power having the above-described configuration will be described below.

First, the operation example of the apparatus for measuring the ground resistance will be described.

The second plug 110P and the second outlet 34 are electrically connected to measure the ground resistance. Thereafter, the switch 40 is switched to the OFF state.

As shown in FIG. 4, the second auxiliary grounding rod 20B coupled with the first auxiliary grounding rod 20A and the third auxiliary grounding rod 20C are grounded at a straight line 10 m interval from the grounding object to which the grounding resistance is to be measured. To a predetermined depth. Here, the first outlet 22 provided at the center portion of the two ground wires 21A, 21B electrically connecting the two auxiliary ground rods 20A, 20B, and the first plug 220P provided at the end of the reel wire 31. Is connected, and the ground resistance can be measured by connecting the grounding object to the ground resistance meter using the third ground wire 21C.

Next, an operation example of the device for power supply will be described.

The second plug 110P and the second outlet 34 are electrically connected for power supply. Thereafter, the switch 40 is turned ON.

Power is supplied from the power supply source of the workplace through the first plug 220P of the reel wire 31 provided in the reel 30. The supplied power is led to the 220V outlet 80A or 110V outlet 80B through the switch 40, the earth leakage breaker 50, and the transformer 60 electrically connected to the reel 30, and the red light of the LED Lights up. Accordingly, the worker can use the incoming power as a temporary work power.

According to the present invention, by integrating a device for measuring ground resistance and a device for supplying power, it is easy to measure the ground resistance, and to supply power for test work requiring double power supply such as a relay test and temporary work in a place that is vulnerable to safety. It can be, by using an earth leakage breaker operating below the human body electric shock protection allowance, there is an effect that can prevent electric shock accidents and electrical fires when the power supply.

In addition, a separate portable bag is provided in the integration device according to the present invention, and by providing a tool necessary for the work in the portable bag, there is an effect of increasing the efficiency of the operation according to the ease of management and movement of the equipment.

Claims (10)

In the integrated device that can measure the ground resistance and supply power, A ground resistance meter (10) for measuring ground resistance by using an auxiliary ground rod and a reel described below; An auxiliary ground rod 20 connected to the ground to measure ground resistance; A reel 30 made of duralumin and electrically connected to a switch below; A switch 40 connected to the reel 30 and switched according to ground resistance measurement and power supply; An earth leakage circuit breaker (50) which cuts off the electric current when the current drawn from the switch (40) exceeds a predetermined allowable amount; And An outlet 80 composed of a 220V outlet 80A and a 110V outlet 80B for supplying power drawn through the reel 30, the switch 40, and the circuit breaker 50; An integrated device capable of measuring ground resistance and supplying power comprising a. The method of claim 1, All-in-one device capable of measuring ground resistance and supplying power A fuse holder (70) for protecting the circuit from the effects of the overcurrent drawn through the reel (30); An integrated device capable of measuring ground resistance and supplying power further comprising a. The method of claim 1, All-in-one device capable of measuring ground resistance and supplying power LED 90 to confirm the presence or absence of pressurization of the power; An integrated device capable of measuring ground resistance and supplying power further comprising a. The method of claim 1, All-in-one device capable of measuring ground resistance and supplying power A relay 100 to prevent an electric shock and burnout of the ground resistance meter 10; An integrated device capable of measuring ground resistance and supplying power further comprising a. The method of claim 1, The auxiliary ground rod 20, A first auxiliary ground rod 20A and a second auxiliary ground rod 20B spaced at a predetermined distance and connected to the ground at a predetermined depth; A third auxiliary ground rod (20C) having a predetermined length and screwed to a lower end of the second auxiliary ground rod (20B); A first ground wire (21A) and a second ground wire (21B) electrically connecting the first auxiliary ground rod (20A) and the second auxiliary ground rod (20B); And A first outlet 22 positioned at the center of the first ground line 21A and the second ground line 21B and connected to the first plug 220P; An integrated device capable of measuring ground resistance and supplying power comprising a. The method of claim 1, The reel 30, Reel wire having a predetermined length and having a first plug 220P at an end thereof to receive power from a power supply source, and to be connected to the first outlet 22 of the auxiliary earthing rod 20 to measure a ground resistance. (31); A handle 32 and a bearing 33 for winding and unwinding the reel wire; A second outlet 34 connected to the switch 40; And A stopper 35 positioned at a lower right end of the reel 30 to prevent entanglement when the reel wire 31 is released; An integrated device capable of measuring ground resistance and supplying power comprising a. The method of claim 1, The switch 40, A second plug 110P electrically connected to a second outlet 34 of the reel 30; An integrated device capable of measuring ground resistance and supplying power comprising a. The method of claim 7, wherein The second outlet 34 and the second plug 110P are An integrated device capable of measuring ground resistance and supplying power, wherein the reel wire 31 is wound and separated from each other when unwound. The method of claim 1, The predetermined allowable amount is An integrated device capable of measuring ground resistance and supplying power, characterized in that from 11 mA to 15 mA. The method of claim 1, A transformer 60 for stepping down the 220V voltage drawn through the switch 40 to 110V; An integrated device capable of measuring ground resistance and supplying power further comprising a.

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