KR100859326B1 - Distributing board - Google Patents

Abstract

A distributing board is provided to prevent an electric shock by insulating all charge units of an extra-high voltage unit and electrically shielding an outside with solid insulating material. A distributing board includes an extra-high voltage unit(11), a transformer unit(12), and a low voltage unit(13) which are formed by block shaped units respectively. The extra-high voltage unit includes an auto section switch, a lighting arrester, a current limiting fuse, and an instrument transformer. The low voltage unit includes a main low voltage circuit breaker, a power factor improving condenser, and a wiring circuit breaker. The distributing board further includes female and male coupling devices(14a,14b) which connect the extra-high voltage unit, the transformer, and the low voltage unit to each other.

Description

Switchboard {DISTRIBUTING BOARD}

The present invention relates to a switchgear with a three-phase 22.9KV voltage received from KEPCO to be stepped down to a commercial voltage.

More specifically, each of the special high voltage part, the transformer part and the low pressure part constituting the switchgear is housed in an integrated housing and manufactured as a block-type unit, and each of these units is assembled into a block fastening unit and the special high pressure part. Electrically insulates all live parts of the transformer and separates and connects the outside with a shielding structure, greatly reducing the installation area and space of the switchgear, and electrically shielding the exposed live parts (connections between the conductors) of the special high voltage part by solid insulation. It prevents electric shock disaster when flooding, and it is possible to easily separate and combine between the low pressure part, the special high pressure part and the transformer part unit to maximize the convenience of transportation and installation, reducing the overall volume, lightening the weight, and simplifying the installation work. It's about a switchboard.

In general, an electrical room provided in a building, a factory, or an apartment is provided with a distribution panel for receiving high voltage or extra high voltage electricity supplied by a power company and distributing it to the load of each customer.

These switchboards are designed for safety against electric shocks and fires, and various breakers and protective equipment such as switchgear, transformer, parking breaker, condenser, wiring breaker, current-fuse fuse, and lightning arrester are designed in a certain size. And various relay equipment such as current transformer, power meter, video current transformer, ammeter, voltmeter and so on.

The switchgear is supplied with electricity of high pressure or extra high pressure to reduce the pressure to suit the purpose and to be sent to each load of the customer, and is divided into an extra high voltage part, a transformer part and a low voltage part according to the power supply procedure and voltage of the power system.

The extra high pressure portion receives electricity of a special high pressure supplied from the outside, the transformer portion decompresses the special high pressure electricity to the load of the consumer, and the low pressure portion performs a function of sending the low pressure electricity to the multiple loads of the customer.

However, most switchboards are installed in a closed and narrow space such as a basement inside a building, especially in a space where three sides are surrounded by walls and the other one is open, in which case the switchboard is located inside the switchboard installation space. Since the space to open and close the enclosure door must be secured, the switchboard installation space needs a much larger space than the size of the switchboard.

In addition, the extra-high voltage transformer and the transformer unit have to maintain the insulation distance to insulate each other, thereby increasing the volume of the switchgear.

As a result, the switchgear is not easy to carry and install the switchgear because the weight increases with the volume.

Moreover, since the charging part (connecting part between conductors) of an extra-high voltage | voltage part and a transformer part is not insulated, there exists a possibility of causing safety accidents, such as an electric shock accident.

In other words, if the switchboard is installed in the basement or outdoors with high humidity, there may be a safety accident due to leakage current of the high voltage section and the transformer section. Therefore, the manager must waterproof the space where the switchboard will be installed before installing the switchboard. The humidity of the space where the switchboard is installed should be checked frequently.

According to the present invention, the special high voltage part and the transformer part are completely shielded by solid insulation, thereby significantly reducing the installation space of the switchgear, and the safety of an electric shock such as indoors as well as installation of the switchgear without an additional waterproof device. Its purpose is to reduce accidents as much as possible and to facilitate the transportation and construction of switchboards in confined spaces.

Switchgear according to the present invention for achieving the above object,

Special high-pressure section including automatic section switch, ring arresting arrester, current-type fuse, instrument transformer,

Transformer section,

Each low voltage part including low voltage parking circuit breaker, power factor correction capacitor and wiring breaker is manufactured as a block type unit.

The extra-high pressure unit, the transformer unit, and the low pressure unit manufactured by the block-type unit are provided with male and female fastening means for binding each other.

The extra-high voltage portion is characterized in that it is configured to electrically shield the charging portion (connection between the conductors) by using solid insulation.

The extra high voltage part and the transformer part are laminated and assembled in a multilayer structure, and at the same time, the connection part is completely shielded by a solid insulated connection material, thereby improving the separation problem for securing the insulation distance from the charging part (connection part between the conductors) of the extra high pressure part, thereby reducing the installation area and volume as much as possible. It is characterized by what can be.

The low pressure part may be separately installed at a second branch point in a state separated from the special high pressure part, thereby reducing construction cost by reducing the required amount of cable required for connection from the low pressure part to the distribution box.

Solid insulation shielding the exposed live part (connection between conductors) may be made of special EPDM rubber or epoxy.

Therefore, according to the present invention, the present invention has an effect of facilitating the transport and installation of the switchgear by designing a single block type so that the high voltage section, the transformer section and the low voltage section can be assembled into an integrated switchgear.

In addition, the present invention is to insulate all the charging parts (connection between the conductors) of the high-pressure section by using a solid insulation (special EPDM rubber or epoxy), it is possible to completely prevent all electric shock accidents by electrically shielding the outside have.

In addition, the present invention can completely solve the problem of the insulation distance required in the conventional air insulation method by completely shielding all live parts (connections between the conductors) of the high-pressure section by solid insulation, significantly reducing the installation area and space of the distribution panel It can work.

In addition, the present invention improves the connection means for electrically connecting the extra high voltage unit, the transformer unit and the low pressure unit to a completely waterproof structure, as well as electrical insulation and complete shielding of the connecting unit itself and the extra high pressure unit, the coupling portion of the transformer unit. It can be used indoors as well as outdoors without special waterproofing.

1 is an exploded perspective view of a switchgear according to the present invention showing the extra-high pressure unit and the transformer unit and the low-pressure unit before assembling integrally, and FIG. 2 is a perspective view of the switchgear panel according to the present invention. It is assembled.

As shown in FIG. 1, the present invention is constructed and manufactured as a single block unit to be combined and separated before construction.

The switchgear according to the present invention includes an extra high pressure part 11, a transformer part 12, and a low pressure part 13, and the extra high pressure part 11 and the transformer part 12 are completely waterproof and shielded to a block-type unit. It is assembled and completely shielded by solid insulation.

The low pressure part 13 has a housing structure suitable for air insulation and indoor and outdoor use places.

Although the high voltage section 11 and the transformer section 12 and the transformer secondary side terminal connection section are not shown in the drawing, each connection section (not shown) is completely insulated by a solid insulated connection member (elbow connection member, insulated cable). It will be appreciated that a waterproof electrical connection is provided.

Here, the components constituting the extra-high pressure unit 11 may include, for example, an automatic section switch and a lightning arrester, a current-limiting fuse, and a metering out fit (MOF).

In addition, examples of the components constituting the low pressure part 13 include a low voltage parking circuit breaker, a power factor improving capacitor, a wiring breaker, and the like.

A special EPDM rubber or epoxy may be used as the solid insulation for insulating the charging part (connecting part between the conductors) of the special high pressure part 11 and electrically shielding the outside completely.

The extra high pressure part 11, the transformer part 12, and the low pressure part 13 have been constructed in a state where the extra high pressure part 11, the transformer part 12, and the low pressure part 13 are integrally coupled as shown in FIG. 2. Fastening means 14a and 14b are provided for binding when not separated by external impact or other external force.

The fastening means 14a and 14b are configured to bind the extra high pressure part 11 and the transformer part 12, the extra high pressure part 11 and the low pressure part 13, the transformer part 12 and the low pressure part 13 to each other. To this end, it is preferable that the fastening means (14a, 14b) consists of a pair of fastening means for this purpose.

In addition, the present invention is a distance between the low pressure portion 13 and the distribution box (not shown) when the low pressure portion 13 is constructed in a separated state without being integrally coupled with the special high pressure portion 11 or the transformer portion 12. The length of the cable for connecting to the distribution box can be shortened.

Although the present invention has been described only to install a switchgear by assembling the extra-high voltage unit 11 and the transformer 12 integrally shielded by solid insulation in the above embodiment, the present invention is not limited thereto, and the high-pressure unit 11 is not limited thereto. ) And the transformer unit 12 and the low pressure unit 13 can be variously modified, such as installing the switchgear by assembling them after installing them in a separate case.

Of course, in this case, the combination of the extra-high pressure unit 11, the transformer unit 12 and the low-pressure unit 13 installed in the case integrally and then integrally coupled to the case is configured in the case, The high pressure section 11, the transformer section 12 and the low pressure section 13 are not separated from external impact or other external force.

In addition, the present invention has been described only in the above-described high pressure unit 11 and transformer unit 12 and the low pressure unit 13 constituting the switchgear, the present invention is not limited to this, but the high pressure unit 11 and the transformer ( 12) It is possible to realize not only waterproofing but also convenience of construction as well as electrical shielding by electrically connecting back light by using electrically insulated and waterproof elbow junction or flexible rubber insulated cable.

1 is an exploded perspective view of a switchgear according to the present invention, which is a view showing an extra-high pressure unit, a transformer unit, and a low-pressure unit before being integrated in one piece.

Figure 2 is a perspective view of a switchgear according to the present invention is a view showing a state in which the extra high pressure unit, the transformer unit and the low pressure unit is integrally assembled.

** Explanation of symbols for main parts of drawings **

11: high-pressure unit 12: transformer unit

13: low pressure part 14a, 14b: fastening means

Claims (4)

Special high voltage section including automatic section switch, ring arresting arrester, current-limiting fuse, instrument transformer, Transformer section, Each low voltage part including low voltage parking circuit breaker, power factor correction capacitor and wiring breaker is manufactured as a block type unit. The extra-high pressure unit, the transformer unit, and the low pressure unit manufactured by the block-type unit are provided with male and female fastening means for binding each other. The extra-high voltage switchgear is characterized in that the electrical shielding is completely shielded by using solid insulation to configure the transformer unit and the laminated structure to minimize the installation area. The method of claim 1, The extra high pressure unit, the transformer unit and the low pressure unit is housed in a case, the case is a switchgear, characterized in that the fastening means for coupling the extra high pressure unit and the transformer unit and the low pressure unit integrally assembled with each other. The method according to claim 1 or 2, The solid insulation shielding the extra-high pressure portion is made of a special EPDM rubber or epoxy switchgear. The method according to claim 1 or 2, The extra-high voltage transformer and the transformer unit are completely waterproof and electrically shielded by solid insulation, and thus can be used in an open state by a frame that can accommodate each device without a case shielding the outside of the enclosure. .

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