KR100366225B1 - Incoming wire fuse box for low-voltage - Google Patents

Abstract

The present invention relates to a low-pressure drop-off fuse that is compacted by embedding a drop-off device supplied to a home in one box.

The present invention is to install a lead wire device supplied to the home in a single wire fuse box (Box), because the red light is turned on the fuse terminal melted when the fuse is blown out to easily distinguish the failure lead wire to safely and quickly repair the lead wire failure The purpose is.

Description

Incoming wire fuse box for low-voltage}

The present invention relates to a low-voltage lead-in fuse that is compacted by embedding a complicated lead-in device supplied to a home in one box, and more specifically, a low-voltage single-phase for supplying electricity to low-pressure customers such as malls and houses. It is a low-voltage drop-off fuse that is compact and built in a simple and multi-functional in order to repair the drop-in failure safely and quickly.

Conventionally, in order to supply electricity to the low pressure consumer, as shown in FIG. 6, the CV wire branched from the low voltage wire main line was connected to the lead wire branching box, and the electricity was supplied from the branch box to the home meter through the wire fuse again. 4 sets of lead wires are drawn out from the lead-out branch box. The wire fuse, which is a lead wire protection device, is installed one by one on the voltage side wire of each lead wire, and the four wire fuses are fixed to the wire fuse support that is separately installed. However, the wire fuses installed in this way are used to prevent excessive fires or fires caused by indoor short circuits. As shown in FIG. 5, when both sides of the wire fuse are crimped to the lead wire, when compression is not performed correctly, heat is generated due to contact resistance, which causes the lead wire failure.

In addition, if a consumer uses a lot of electric power more than the fuse capacity or the fuse is blown out due to a short circuit in the indoor wiring, the blown wire fuse must be replaced with a new wire fuse. In this case, after cutting and disconnecting the existing wire fuse from the lead wire, the new wire fuse is crimped to the lead wire. If the wire fuse part is cut off, the length of the lead wire becomes short and it is impossible to install a new wire fuse. If the repairman skips the wire fuse and installs the wire directly, the damage may be increased in the event of a fire or human injury in the room, as well as causing a breakdown of the transformer installed in the telephone pole. This results in all customers being temporarily out of power.

In order to replace the electric wire fuse, trouble-shooters will ride on the telephone pole or work on the maintenance work vehicle, which requires the cumbersome work of cutting out the fusing wire fuse and constructing a new electric wire fuse using a compression tool. It takes about 10 minutes or more. In addition, a large number of materials such as a feeder branch box, electric wire fuse, and electric wire fuse support are required to supply a single electric cable, which can complicate the commercial facilities and impede the aesthetics of the city, and can also cause breakdowns. In terms of phosphorus, high cost is incurred.

In fact, the number of low-voltage failures recorded by KEPCO by year was 40,386 (18.2%) of out of 221,780 low voltage failures in total in 2013, and 33,292 of 199,358 low-voltage failures in total in 1998 (16.7%). ), The proportion of lead-out failures is very high, with an average of 17.5%. Many of these failures are repaired by the electrician directly on the telephone pole or by using a maintenance work vehicle. When using an existing electric wire fuse, it is necessary to find a broken fuse and remove the broken fuse and replace it with a new one. Redundancy is required, during which time consumers will suffer from power outages.

In particular, in recent years, there is no need for power failure in consideration of the fact that general households are using a personal computer to obtain various information and work through computers, but if a failure occurs, it is necessary to transmit power within the shortest time. have. Therefore, it is required to develop a product that is simpler in structure than the existing tugboat device and can shorten troubleshooting time.

The present invention simplifies the lead wire device by incorporating a complicated wire wire device supplied to a home into a compact wire fuse box, and quickly detects a fault location because the red light is turned on at the fuse terminal when the fuse is blown. Its purpose is to make repairs safe.

1 is an overall configuration of the present invention.

2 is a view showing only one fuse holder for accommodating the fuse of the present invention.

3 is a view showing a process of inserting a fuse of the present invention 47 into a fuse holder.

4 is a perspective view of a state in which the present invention is installed in a telephone pole.

5 is a view showing a process of installing a conventional wire fuse to the incoming line,

(a) is a step of inserting the terminal cap of the wire fuse to the stripped wire,

(b) is a step of inserting the power supply line and the lead wire into the wire fuse terminal and compressing each with a compression fly,

(c) is to insert the terminal cap on both sides of the wire fuse.

6 is a drawing of a conventional lead-in construction.

<Brief description of symbols for the main parts of the drawings>

1: Hughes enclosure, 2: Voltage-side wire branched from low voltage mains

3: Bolt for fixing voltage side wire to fuse

4: Bus bar for common voltage side wires

6: fuse holder to accept the fuse, 7: wire to connect the fuse holder with the lead wire

8: bolts for securing the lead wire to the fuse box, 9: lead wire entry to the home

10: lead wires into each home, 11: spare fuse box

12a: Fuse blow indicator (lights up when disconnected), 12b: Fuse blow indicator (lights off normally)

21: Lower fuse holder, 22: Terminal on the voltage side to the lead wire, 23: Upper fuse holder

31: Lower fuse holder, 32: A fuse accommodated inside the fuse holder, 33: Upper fuse holder

41: low voltage line (voltage side), 49: low voltage line (ground side), 42: rack for fixing low voltage line pole

43: Connector for connecting the low voltage line and the CV wire for lead-in, 44: Completed wire for the lead wire

45: CV cable branched from low voltage line

조 1 trillion is the voltage-side wire connected to the lead wire insulator through the fuse box

1 The other set is the ground-side wire and is directly connected to the lead wire insulator without going through the fuse box (the ground side does not need fuse)

46: Bind the CV wire to the finish, 47: Low-voltage incoming fuse box (invention)

48: Inlet supporter going out to home

The present invention is described in more detail based on the attached low-pressure line fuse fuse as follows. The fuse enclosure (1) is made of a thermosetting resin (phenolic resin), which is the same material as that of the existing branch line, and is made in a box shape. It is fixed in bands to the top of the column and has excellent weather resistance. A set of voltage cables (2) made of (CV) wires enters the fuse box (1) and is connected to the busbar (4, Busbar) of interlocking material. (The ground-side wire is installed outside the fuse enclosure and shared with each lead wire. being). Busbars (4) are equipped with four fuse holders (6) made of insulators that are open in the form of screws, and each fuse holder (6) has a cylindrical fuse (specific figure is not shown). If a short circuit or excessive power is used, it breaks and prevents a fire or human accident.In the event of a blow, the troubleshooter replaces the spare fuse in the spare fuse box (11) to complete the repair. The box 11 has a rectangular shape to store the preliminary fuse and is easily opened. The fuse holder 6 has a + terminal as shown in FIG. 2 at the load side, and a double wire for connecting with a lead wire into the home at this terminal. There is a red light (12a, 12b) indicating that the lead wire is connected to the household lead wire through the bolt (8) is the electricity flowing through each of the four low-pressure lead wire (10) When the power is cut off (failed), the red light turns on, allowing the troubleshooter to easily identify the failed lead. Overall, the entry components are housed inside the fuse box, reducing the risk of failure. In addition, it can be helpful for urban aesthetics and ensure the safety of troubleshooting.

<Application example>

The low-voltage incoming fuse box of the present invention was applied to the repair of the incoming ship failure in 1998, instead of the existing [outgoing junction box + wire fuse + wire fuse support], and the cost per unit was as shown in Table 1, and the total repair cost was about 211,271,000 won. Budget savings have been achieved.

Table 1. Construction Cost Comparison

division material cost Labor costs Sum Existing Method 7,318 7,056 14,374 How to improve 4,500 3,528 8,028 difference 2,818 3,528 △ 6,346

As described above, when the present invention is applied to the installation and troubleshooting of low-voltage lead-in wires, it becomes the role of only one compacted low-voltage lead-in fuse box instead of [duger branch box + wire fuse + wire fuse support]. If the budget is reduced by 6,346 won per place and applied to 311,210 single-phase incoming ships ('98 statistics) and 36,839 failed ships per year, the annual savings will be about 2,208,718,000 won. By quickly finding and repairing the faulty incoming line, it is possible to solve the inconvenience of the customer in a short time, so that it can satisfy the user's service needs, and it is simple to replace only one fuse for which the work method is exhausted. Can contribute Therefore, the present invention can be said to be a breakthrough and very useful product for the installation of ships and troubleshooting.

The present invention can easily grasp the fuse of the melted consumer can safely and quickly repair the lead-in failure, and is very economical compared to the conventional as well as simple installation. In addition, it is effective to improve the aesthetics of the city because only one [low pressure incoming fuse box] needs to be installed in place of the conventional [incoming junction box + wire fuse + wire fuse support].

Claims (5)

When the low voltage main line (2) enters into the fuse enclosure (1) and the branched voltage side sieve wire enters and divides into four lead wires to supply power to the consumer side, the fuse enclosure (1) is made of thermosetting waste paper resin material. Four fuse holders in which a bus bar 4 is connected to a fixing bolt 3 at an end portion of the low-pressure main line 2 drawn into the fuse enclosure 1 and each of the cylindrical fuses are accommodated in the bus bar 4, respectively. 6 are formed at predetermined intervals, and each of the four fuse holders 6 formed in the busbar 4 is connected with a wire for exclusive use of the wires, and the lead wires 10 are drawn out of the fuse enclosure 1, respectively. Low-voltage incoming fuse box, characterized in that four red indicator lights provided in the fuse box 1 to indicate whether electricity is supplied to the two incoming wires 10, respectively. delete delete delete delete