KR100540204B1 - Module assembly typed low-voltage motor control center - Google Patents

Abstract

The present invention relates to a switchgear for receiving power supplied by a power company and distributing power to each load of a customer. More particularly, the present invention relates to a main circuit breaker and a plurality of circuit breakers installed in a predetermined cabinet. Electrically and mechanically installed busbar systems are installed in orthogonal directions to busbar systems for electrically connecting, busbar connectors for electrically and mechanically connecting orthogonal busbars, and branch busbars installed in a horizontal or vertical direction. The present invention relates to a modular low-voltage power panel (MCC panel) that can be assembled quickly and easily without cutting, bending or hole-making a busbar by including a detachable adapter to be connected.

According to the present invention, a modular assembled low pressure power board includes: a cabinet forming an internal space having a predetermined size; (a) a first main busbar device for connecting the input terminal of the main circuit breaker installed in the cabinet and the output side of the transformer, and (b) a plurality of branch busbars installed horizontally or vertically in the output terminal of the main circuit breaker and inside the cabinet. A second main busbar device connected to each other, (c) a busbar connecting member for electrically connecting a plate busbar orthogonal to the hook busbar of the branch busbar, and a hook busbar of the branch busbar in an orthogonal direction. A busbar system composed of a branch busbar device composed of one or more removable adapters which are connected electrically and mechanically; A plurality of distribution breakers electrically and mechanically connected to the removable adapter; Is installed in the load end of the circuit breaker for distribution is configured to include an AC switch and an overload protection relay (MS) to control the power.

Low voltage power board, low pressure board, busbar, module, cabinet, enclosure, connector, adapter, AC switch, overload protection relay

Description

Module assembly typed low-voltage motor control center

1 is a schematic configuration diagram showing an example of a low pressure power panel according to the prior art,

Figure 2 is a perspective view showing a busbar system of a low pressure power panel according to the prior art,

Figure 3 is a perspective view showing a connection method of the orthogonal busbars according to the prior art,

Figure 4 is a front view showing a modular assembled low pressure power board according to the present invention,

5 is a perspective view showing a modular assembled low pressure power board according to the present invention;

Figure 6 is a side view showing a first cabinet of the modular assembled low-pressure power cabinet according to the present invention,

7 is a side view showing a second cabinet of the modular assembled low-pressure power panel according to the present invention;

8 is a perspective view showing a rectangular busbar and its supporting means according to the present invention;

9 is a perspective view showing a plate-shaped busbar and bending busbar according to the present invention,

10 and 11 are an exploded perspective view and a cross-sectional view showing a first busbar connector according to the present invention;

12 is an exploded perspective view showing second and third busbar connectors according to the present invention;

13 is an exploded perspective view showing a branch busbar according to the present invention;

14 to 16 is a perspective view, an exploded perspective view and a cross-sectional view showing a bus bar connecting member according to the present invention;

17 to 19 is a perspective view, a rear perspective view and a sectional view showing a detachable adapter according to the present invention;

20 and 21 are a cross-sectional view and an exploded perspective view showing another embodiment of the removable adapter according to the present invention;

22 to 25 are perspective and exploded perspective views showing the cabinet and cabinet components according to the present invention,

26 is a front view showing another embodiment of the modular assembled low-pressure power cabinet according to the present invention;

27 is an exploded perspective view showing another embodiment of the busbar connecting member according to the present invention.

The present invention relates to a switchgear for receiving power supplied by a power company and distributing power to each load of a customer. More particularly, the present invention relates to a main circuit breaker and a plurality of circuit breakers installed in a predetermined cabinet. Electrically and mechanically installed busbar systems are installed in the orthogonal direction to busbar systems for electrically connecting, busbar connectors for electrically and mechanically connecting orthogonal busbars, and branch busbars installed in a horizontal or vertical direction. The present invention relates to a modular low-voltage power panel (MCC panel) that can be assembled quickly and easily without cutting, bending or hole-making a busbar by being configured to include a detachable adapter to be connected to the device.

In general, a building, a factory, or a ship is provided with a switchgear that receives electricity supplied from a power company or a self-generator and distributes the power to each load. This switchgear is designed to reduce the high-pressure or extra-high voltage electricity to suit the purpose, supply it to each load, and automatically cut off when an abnormality such as overload or disconnection occurs. Installed in a cabinet of size. Therefore, inside these cabinets, various circuit breakers and protection devices such as switchgear, transformer, parking breaker, condenser, wiring breaker, power fuse and lightning arrester, and various relay equipment such as current transformer, power meter, video current transformer, ammeter and voltmeter are installed.

On the other hand, the switchgear is an extra high pressure switchgear (LBS panel), a transformer transformer transformer base (MOF panel), a transformer transformer base (PT panel), a special high-blocking base (VCB panel), etc. to receive the supplied high pressure or extra high pressure It consists of a high pressure panel consisting of a transformer plate, a transformer plate installed with a transformer for converting high voltage electricity to low pressure, and a low pressure power panel for distributing low voltage electricity to each load. The present invention relates to such a low-voltage power panel, which is to distribute the low-voltage power supplied from the transformer to each load and to prevent overcurrent flow, such as a circuit breaker or a protective relay installed in the cabinet It consists of unit devices and conductors (Busbar, Cable) that electrically connect these unit devices.

These low-voltage power panels are designed to suit the size and power consumption of buildings and ships. Therefore, low pressure power panels are difficult to standardize. Accordingly, the conventional low-voltage power panel is designed to suit each electric power demand, and the main busbar and the branch busbar are positioned according to the design, and then the busbar must be cut, bent or holed, and then assembled. Not only is this complicated, it is time consuming and expensive, and it requires a skilled professional.

For example, Figure 1 is a schematic block diagram showing an example of a low pressure power drive according to the prior art. As shown in the drawing, the conventional low voltage power board 10 electrically connects the main breaker 12 and the plurality of distribution breakers 14 installed in the cabinet, and the main breaker 12 and the distribution breaker 14. It consists of a busbar system 16 to be connected.

Here, the main breaker 12 opens and closes the power supplied from the transformer through a plurality of opening and closing contacts, and also automatically cuts off an abnormality such as an overload or disconnection. In addition, the distribution circuit breaker 14 serves to transmit power transmitted from the main circuit breaker 12 to a power load (not shown) in an electrically connected state with the main circuit breaker 12.

As shown in FIG. 1, in the low pressure power panel 10 according to the related art, a main bus bar 13 is vertically installed at an output end 122 of the main breaker 12, and the main bus bar 13 is provided. A plurality of branch busbars 15 are provided in the horizontal direction so as to be perpendicular to each other. Distribution breakers 14 are respectively provided at the ends of the branch busbars 15, and power loads are connected to the output terminals 142 of the breaker 14 for distribution. On the other hand, the main bus bar 17, 11 for receiving power from the transformer is connected to the input terminal 121 of the main circuit breaker 12.

As described above, the low-voltage power panel 10 according to the prior art is installed in the horizontal direction so that the plurality of branch bus bars 15 are perpendicular to the main bus bar 13 installed vertically, and the branch bus bars 15 are provided. The circuit breaker 14 is installed at both ends of the structure. Therefore, as shown in FIG. 2, in order to intersect and selectively connect the main busbar 13 and the branch busbar 15 orthogonal to each other, a predetermined bending portion ( 19 is formed, and a fastening hole 18 is formed at the contact position of the branch busbar 15 and the main busbar 13.

However, as described above, since the connection position of the main busbar 13 and the branch busbar 15 is different depending on the design of the power board, the busbar cannot be bent or holed in advance, and at that time, the tightening position must be selected and then worked. There was a problem. In addition, since the breaker 14 for power distribution is installed at both ends of the branch busbar 15, the conventional low voltage power board 10 first cabinets the breaker 14 for each power distribution to connect the breaker 14 for power distribution. Both ends of the branch busbars 15 which are physically fixed and then bent and holed must be screwed to the input end 141 of the circuit breaker 14 for distribution. Therefore, the conventional low pressure power board 10 takes a lot of time to bend and hole the busbar and install and screw the circuit breaker 14 when assembling, and the circuit breaker once installed is changed or replaced. It was a difficult problem to do.

In addition, the low-pressure power panel 10 according to the prior art, as shown in Figure 3, in the process of assembling the busbar system, the booth to connect the orthogonal plate-shaped busbar (11, 17) electrically and mechanically Since the mechanical processing such as cutting, bending and hole cutting are necessary, the assembly process is complicated, and there is a problem in that time and manufacturing cost are excessively consumed.

The present invention is to solve the problems according to the prior art, the main object of the present invention, in forming a low-voltage power panel by electrically and mechanically connecting the orthogonal busbar, modular busbar, prefabricated busbar connector and By using the busbar connection member, it is possible to assemble easily and quickly without any mechanical processing such as cutting, bending and hole processing. It also has a modular low voltage power panel that can easily install a number of circuit breakers without screwing using a detachable adapter. To provide.

The present invention provides various types of modular busbars and prefabricated busbar connectors so that two orthogonal busbars can be electrically and mechanically connected without bending and hole processing.

The present invention also provides a busbar connecting member capable of electrically and mechanically connecting a flat busbar installed in a vertical direction and a hook-shaped busbar provided in a horizontal direction without bending and hole processing.

In addition, the present invention is to provide a removable adapter that can be electrically and mechanically connected to the distribution circuit breaker is orthogonal to the branch busbar installed in parallel in the horizontal or vertical direction.

In addition, the present invention provides a busbar system in which a plurality of branch busbars are densely installed in a parallel direction in a horizontal or vertical direction inside the cabinet, and a plurality of detachable adapters are installed in each branch busbar to efficiently use a limited space of the cabinet. To provide.

In order to achieve the above object of the present invention, the module-assembled low pressure power panel according to the present invention, the cabinet to form an internal space of a predetermined size; (a) a first main busbar device for connecting the input terminal of the main circuit breaker installed in the cabinet and the output side of the transformer, and (b) a plurality of branch busbars installed horizontally or vertically in the output terminal of the main circuit breaker and inside the cabinet. A second main busbar device connected to each other, (c) a busbar connecting member for electrically connecting a plate busbar orthogonal to the hook busbar of the branch busbar, and a hook busbar of the branch busbar in an orthogonal direction. A busbar system composed of a branch busbar device composed of one or more removable adapters which are connected electrically and mechanically; A plurality of distribution breakers electrically and mechanically connected to the removable adapter; Is installed in the load end of the circuit breaker for distribution is configured to include an AC switch and an overload protection relay (MS) to control the power.

In the present invention, the first and second main busbar device comprises (a) a rectangular busbar and a plate-shaped busbar, and (b) the rectangular busbar is formed on each side with a copper rod having a rectangular cross section. T-shaped guide grooves are formed along the longitudinal direction, and (c) the plate-shaped busbars are formed by stacking a plurality of plate-shaped copper rods, which are bent in an L-shape at the top or the bottom thereof, and a bent boot bar having horizontal connections is installed. It is done.

The first main busbar device may further include (a) a first rectangular busbar installed in parallel with the upper part of the cabinet in a horizontal direction, and (b) a first plate busbar installed in a vertical direction at an input end of the main breaker; (c) a first busbar connector for electrically connecting the first rectangular busbar and the first plate busbar.

The second main busbar device may include: (a) a second plate busbar vertically connected to an output end of the main circuit breaker, (b) a second rectangular busbar installed parallel to the lower part of the cabinet in a horizontal direction; (c) a second busbar connector for electrically connecting the second plate-shaped busbar and the second rectangular busbar, (d) a third rectangular busbar horizontally installed in the lower part of the cabinet, and (e) in the cabinet. And a third busbar connector provided in parallel in the vertical direction, and (f) a third busbar connector for electrically connecting the third busbar and the third busbar.

The branch busbar device may include a plurality of branch busbars installed in a horizontal direction inside a cabinet, and a busbar connection member for electrically and mechanically connecting a plate busbar of a second main busbar device installed in a direction perpendicular to the branch busbars. And a plurality of detachable adapters installed in the orthogonal direction to the branch busbars installed in the horizontal direction to electrically and mechanically connect the circuit breakers.

The branch busbars may include: a plurality of hook-type busbars spaced vertically and parallel to each other, an end supporting member supporting both ends of the plurality of hook-type busbars, and the hook-type busbars and end portions. It characterized in that it comprises an insulating cover and an insulating cover surrounding the support member.

Subsequently, the busbar connecting member is installed at an intersection of a plurality of hook-shaped busbars installed in a horizontal direction and a plurality of third plate-shaped busbars installed in a vertical direction to guide the hook-type busbars and the third plate-shaped busbars. And a fixing bracket member fixed to the insulating case and coupled to the hook portion of the hook-type busbar and pressurizing and fixing the third plate-shaped busbar.

The detachable adapter may include a rectangular adapter case having a plurality of guide grooves formed at a lower portion thereof to guide a plurality of hook-type busbars installed in a horizontal direction, and installed on an upper plate constituting the adapter case. Adapter fixing brackets that are hooked to the hook portion, cable means which is installed on the bottom of the upper plate of the adapter case and electrically connects the hook-type busbar and the circuit breaker, and is installed on the adapter case and fixed to the circuit breaker for the power distribution. It comprises a means.

In addition, the module-assembled low-voltage power cabinet according to the present invention, in the low-voltage power cabinet configured to include a busbar system for electrically connecting the main circuit breaker and a plurality of distribution circuit breakers installed in a cabinet of a predetermined size,

The busbar system includes: a first main busbar device electrically connecting an input terminal of a main breaker installed in the cabinet and an output side of a transformer; A second main busbar device electrically connecting a plurality of branch busbars vertically installed in the cabinet and output terminals of the main breaker; Connector means for electrically connecting the hook-shaped busbars of the branch busbars to the rectangular busbars of the second main busbar apparatus installed in parallel in the horizontal direction, and to the hook-shaped busbars of the vertically installed branch busbars in a perpendicular direction. And a branch busbar device including a plurality of removable adapters to be electrically connected.

In the busbar system, the connector means includes a busbar connector for electrically and mechanically connecting a rectangular busbar installed in parallel with a bent busbar connected to the hook-shaped busbar of the branch busbar in a horizontal direction, and the hook-type busbar. And a bus bar connecting member for electrically and mechanically connecting the bar and the bent bus bar installed coaxially with the hook-type bus bar.

Hereinafter, with reference to the accompanying drawings will be described in detail the structure and the preferred embodiment of the modular assembled low-pressure power board according to the present invention.

First, Figure 4 is a front view showing an example of a modular assembled low pressure power drive according to the present invention, Figure 5 is a perspective view showing a modular assembled low pressure power drive according to the present invention, Figures 6 and 7 are side views.

As shown, the modular assembled low-pressure power cabinet 1 according to the present invention includes first and second cabinets 2 and 4 which are closely installed to one side, and a main installed in the first cabinet 2. Busbar system 6 for electrically connecting the circuit breaker 3, the plurality of circuit breakers 5 installed in the second cabinet 4, and the main circuit breaker 3 and the circuit breaker 5 for distribution. And an AC switch 5-1 and an overload protection relay 5-2 provided at the load end of the distribution circuit breaker 5.

Accordingly, the modular low-voltage power unit 1 of the present invention is a main circuit breaker (3) and a plurality of distribution circuit breakers (5) of low voltage electricity supplied from a transformer (not shown) through the bus bar system (6) Supply power to each power load via the main circuit breaker (3) and the distribution circuit breaker (5) to automatically cut off the power when an abnormality such as an overload, disconnection, etc. to protect the load, the circuit breaker (5) Open and close power loads such as motors using the AC switch 5-1 and the overload protection relay 5-2 installed at the load end.

The main breaker 3 here is preferably an ACB (Air Circuit Breaker). The ACB is a circuit breaker that eliminates spark aerodynamics from the switch when turning the electricity on and off. And the distribution breaker 5 is preferably a MCCB (Molded Case Circuit Breaker). The input terminal of the MCCB is directly connected to the branch busbar, and each power load is connected to the output terminal. The MCCB is an integrated assembly of the opening and closing mechanism, trip device, etc. in the insulated container can open and close the converter in the energized state by manual or electrical operation. The combination of the AC switch 5-1 and the overload relay 5-2 is called an electromagnetic switch (MS). The electronic switch controls a movable contact of the AC switch by a signal generated from the overload relay interrupts the power supply of the operation coil of the AC switch. Therefore, the load can be protected and controlled by driving / stopping a power load of a motor or the like by turning the AC switch ON / OFF. Since the structure and function of the main circuit breaker 3, the distribution circuit breaker 5 and the AC circuit breaker 5-1 and the overload relay 5-2 is the same or similar to the conventional one, detailed description thereof will be omitted.

Therefore, hereinafter will be described in detail the modular assembled low-pressure power panel 1 according to the present invention with respect to the busbar system (6). As shown in the figure, the busbar system 6 according to the present invention includes a first main busbar device 7 for connecting the output side of the transformer and the input terminal of the main breaker 3, and the main breaker 3 of the main breaker 3. The second main busbar device 8 for connecting the output terminal and the plurality of branch busbars, and the branch busbar device 9 for electrically connecting the second main busbar device 8 and the plurality of distribution circuit breakers 5. It is composed of

First, the first main busbar device 7 and the second main busbar device 8 may electrically and mechanically connect the rectangular busbar 20 and the plate busbar 30 and the rectangular bus bar and the plate busbar. Composed of a plurality of busbar connectors 40, both have a similar structure. On the other hand, the branch busbar device 9 includes a plurality of branch busbars 50 including a hook busbar 60, a hook busbar 60 and a plate busbar of the branch busbar 50. Busbar connection member 70 for electrically and mechanically connecting 30 and a removable adapter 90 for electrically and mechanically connecting a plurality of circuit breakers 5 to the branch busbar 50. Is done.

Meanwhile, the busbar system 6 according to the present invention may be installed in one cabinet or may be installed in two or more cabinets. For example, as shown in FIGS. 4 to 6, the first main busbar device 7 is installed in the first cabinet 2 of the two cabinets 2 and 4 installed adjacent to each other.

That is, the first main busbar device 7 is perpendicular to an input terminal of the first rectangular busbar 20-1 and the main circuit breaker 3 installed in parallel in the horizontal direction on the upper part of the first cabinet 2. First busbar connector 40 for electrically connecting the first plate-shaped busbar 30-1 and the first plate-shaped busbar 20-1 and the first plate-shaped busbar 30-1 installed in the direction. -1)

The second main busbar device 8 has a second plate-shaped busbar 30-2 which is vertically connected to the output end of the main breaker 3, and a lower portion of the first cabinet 2 in a horizontal direction. Second busbar connector 40 for electrically connecting the second rectangular busbar 20-2, the second plate busbar 30-2, and the second rectangular busbar 20-2 installed in parallel. -2), a third rectangular busbar 20-3 provided in the lower direction of the second cabinet 4 in a horizontal direction, and a third plate busbar installed in the second cabinet 4 in parallel in the vertical direction. And a third busbar connector 40-3 that electrically connects the third rectangular busbar 20-3 and the third plate busbar 30-3. In this case, the second rectangular busbar 20-2 and the third rectangular busbar 20-3 are electrically connected to each other through an elastic member that is stretched and contracted according to temperature. Therefore, the second main busbar device 8 according to the present invention has a U-shape as a whole through the first cabinet 2 and the second cabinet 4, as shown in the front view of FIG. 4.

Subsequently, as shown in FIGS. 4, 5, and 7, the branch busbar device 9 includes a plurality of hook-type busbars 60 installed in parallel in the horizontal direction in the second cabinet 4. The branch bus bar 50 including the hook bus bar 60 and the third plate bus bar 30-3 installed vertically in the second cabinet 4 of the branch bus bar 50 may be electrically and A plurality of bus bar connecting members 70 for connecting mechanically and the hook-shaped bus bar 60 of the branch bus bar 50 in the orthogonal direction to electrically and mechanically connect the circuit breaker 5 for distribution. It consists of a removable adapter (90).

Meanwhile, the rectangular busbars 20: 20-1, 20-2, and 20-3 applied to the first main busbar device 7 and the second main busbar device 8 are as shown in FIG. Similarly, it is a rectangular copper rod (dongdae) in which T-shaped guide grooves 21 are integrally formed along each side in the longitudinal direction. The T-shaped guide groove 21 increases the power supply capacity by increasing the surface area of the busbars, and is advantageous for heat dissipation. And the T-shaped guide groove 21 is provided with a slide T-shaped slide 22. At this time, the fastening hole 23 is penetrated through the T-shaped slide 22, and the fixing bolt 49 is fastened to the fastening hole 23. Therefore, the slide 22 is inserted into the T-shaped guide groove 21 to move from side to side to set a predetermined connection position, and then the fastening bolts 49 are fastened through the fastening holes 23 to bend or hole various bus bars. You can connect to the desired connection location without

Subsequently, the plate-shaped busbars 30: 30-1, 30-2, and 30-3 applied to the first main busbar device 7 and the second main busbar device 8 are shown in FIG. Similarly, a plurality of plate-like bars are stacked. At this time, the laminated plate strips are spaced apart from each other to increase the surface area and at the same time advantageous to the heat radiation. In addition, the upper or lower or upper and lower ends of the plate-shaped bus bar 30 is bent in the form of the letter B and the bending boot bar 31 is formed with a fastening hole is coupled. The bending bus bar 31 allows the plate-shaped bus bar 30 to be connected to a desired connection position without bending or hole processing.

The bent bus bar 31 is composed of a horizontal connecting portion 32 and a vertical connecting portion 33 and the fastening hole is drilled at each end thereof. On the other hand, the horizontal connection portion 32 of the bent bus bar 31 has a different length so as to be selectively connected to a plurality of square bus bar (20). In addition, the bars of the horizontal connecting portion 32 are closely stacked to reduce the cross-sectional area. And the upper or lower portion of the plate-shaped bus bar 30 may be bent in the form of a letter.

Next, the first busbar connector 40-1 applied to the first main busbar device 7 will be described. As shown in FIG. 10, the first busbar connector 40-1 is perpendicular to the rear side of the cabinet and the first rectangular busbar 20-1 spaced apart from each other by a predetermined interval. It is for electrically connecting the 1st plate-shaped busbar 30-1 provided in the process. In the drawing, the first plate-shaped busbar 30-1 is represented by one plate-shaped dongdae. Meanwhile, the rectangular busbars 20-1 and the plate busbars 30-1 are three (R, S, T three phases) or four (R, S, T, N four phases) spaced apart from each other by a predetermined interval. Square busbar or plate busbar). The first rectangular busbar 20-1 and the first plate busbar 30-1 are covered with an insulating member except for the contact positions. In addition, the above-described bending bus bar 31 is installed at an upper end of the first plate bus bar 30-1. At this time, the bent bus bar 31 installed on the upper end of the first plate-shaped bus bar 20-1 has horizontal connection portions 32 of different lengths as described above.

The first busbar connector 40-1 is installed at a connection position where the first rectangular busbar 20-1 and the first plate busbar 30-1 cross at right angles. The first busbar connector 40-1 electrically and mechanically connects the first square busbar 20-1 and the first plate busbar 30-1 without mechanical processing such as bending and hole processing. It prevents safety accidents such as electric shocks and makes beauty look beautiful.

To this end, the first busbar connector 40-1 is installed in the T-shaped guide groove 21 formed on the bottom of the first rectangular busbar 20-1, as shown in FIGS. 10 and 11. T-shaped slide 22, the U-shaped connecting block 41 is installed so as to surround the lower end of the first square bus bar 20-1, the T-shaped slide 22, the first square booth Insulation box 46 and the insulation box 46 and the insulation box 46 are inserted into the lower end of the U-shaped connection block 41 fixed to the bar 20-1 and installed across a plurality of square bars. Fixed to fix the horizontal connecting portion 32, the U-shaped connecting block 41, and the T-shaped slide 23 of the first plate-shaped busbar 30-1 inserted into the first square-shaped busbar 20. It consists of a bolt 49. At this time, the U-shaped connection block 41 is formed with a vertical portion 42 on both sides so as to surround the lower end of the first rectangular busbar 20-1 to form a guide groove and a fastening hole at the bottom of the guide groove. 43 is penetrated.

In addition, the insulating box 46 is an injection molded product of insulating plastic, and is a box having a predetermined length in which the rear and bottom surfaces thereof are opened so that the horizontal connection part 32 of the first plate-shaped bus bar 20-1 can be inserted. The opening 48 is penetrated by the upper plate 47 of the insulating box 46 so that the U-shaped connecting block 41 can be inserted therein. In this case, a plurality of cutting lines 48-1 are formed in the upper plate 47 of the insulating box 46 to form the openings 48 at different connection positions. Therefore, the opening 48 can be formed by cutting the cut line 48-1 at a desired position. In addition, vertical walls 44 are integrally formed on both side surfaces and the front surface of the insulating box 46 to insulate the neighboring busbars, and the shielding wall 45 is perpendicular to the upper surface 47. Not only prevents electric shock, but also improves aesthetics. And the fixing bolt 49 is a fastening hole (34, 43, 23) formed in the horizontal connecting portion 32, the U-shaped connecting block 41 and the T-shaped slide 23 of the first plate-shaped bus bar (30-1) ) Has a predetermined length so as to be fixed to the first rectangular busbar 20-1.

As described above, the first busbar connector 40-1 is installed at a contact point of the first rectangular busbar 20-1 and the first plate busbar 30-1 that is perpendicular to each other, and electrically and mechanically. In addition to the connection, it prevents an electric shock and makes the connection beautiful. In addition, the first busbar connector 40-1 is a first rectangular booth through a bent booth bar 31 having horizontal connecting portions 32 having different lengths and an insulating box 46 that insulates the neighboring busbars. Since the square bar of the bar 20-1 and the plate bar of the first plate-shaped busbar 30-1 can be selectively connected, the first square busbar 20-1 and the first plate-shaped booth at each contact position. There is no need to cut the bar 30-1 or bend at the intersection, and the connection position can be freely changed using the T-type slide 21, and the bending booth bar 31 and the T-type slide 22 having fastening holes are formed. ) And the U-shaped connection block 41, so that no hole processing is required.

Meanwhile, the second busbar connector 40-2 and the third busbar connector 40-3 applied to the second main busbar device 8 will be described. The second busbar connector 40-2 and the third busbar connector 40-3 are rectangular bus bars 20-2 and 20-3 installed horizontally in the lower part of the cabinet 2 and 4, and It is installed at the contact position of the plate-shaped busbars 30-2 and 30-3 perpendicular to the cabinets 2 and 4, but the basic structure thereof is the same as the first busbar connector 40-1 described above.

That is, the second busbar connector 40-2 and the third busbar connector 40-3 may have the second and third rectangular busbars 20-2 and 20-3 as shown in FIG. 12. T-shaped slide 122 slidably installed in the T-shaped guide groove 21 of the T-shaped connecting block 141 surrounding the upper ends of the second and third square bus bars 20-2 and 20-3. ), And an opening 148 is formed at a predetermined position of the lower plate 147 so that the upper end of the U-shaped connection block 141 can be inserted from the lower side, and the second and third plate bus bars 30-2 and 30 are formed. -3) an insulating box 146 of a predetermined length with a rear and an upper surface opened so that the horizontal bent portion 32 of the bent bus bar 31 fixed to the lower end of -3) is inserted, and an upper portion of the insulating box 146 Fastening formed on the bending busbar 31 and the insulating box 146, the U-shaped connecting block 141, and the T-shaped slide 122 of the second or third plate-shaped busbars 30-2 and 30-3. Fixed to penetrate through holes 134, 143, and 123 It comprises a root (149). As shown, the second busbar connector 40-2 and the third busbar connector 40-3 are the first busbar connector 40-1 except for the insulating box 146. Have the same structure.

As described above, the second and third busbar connectors 40-2 and 40-3 are connected to the second and third busbar connectors 40 through the insulating box 146 which insulates the bent busbar 31 and the neighboring busbars. Since the third square bus bars 20-2 and 20-3 are selectively connected, there is no need to cut, bend or hole the bus bars.

Next, the branch busbar apparatus 9 provided in the 2nd cabinet 4 is demonstrated. First, the branch busbar device 9 distributes the electric power transmitted through the first and second main busbar devices 7 and 8 and facilitates installation of a plurality of circuit breakers 5. do. The branch busbar device 9 includes a plurality of branch busbars 50 installed in the horizontal direction in the second cabinet 4 in parallel.

As shown in FIG. 13, the branch busbars 50 are provided with a plurality of hook-type busbars 60 and a plurality of hook-type busbars 60 that are spaced vertically and are installed in parallel in the horizontal direction. End support member 51 for supporting the end, and the insulating cover 55 surrounding the hook-type bus bar 60 and the end support member 51.

First, the hook-type busbar 60 is formed by extruding a conductive metal and having a shape in which 'T' and 'L' are combined. That is, the hook-type busbar 60 is a vertical portion 61, a hook portion 62 bent at right angles in one direction from the tip of the vertical portion 61, and a lower end of the vertical portion 61 It consists of a horizontal portion 63 formed integrally and protruding at right angles to both sides. As such, one branch busbar 50 includes three or four hook-type busbars 60 installed in the horizontal direction spaced apart.

The end support member 51 is a rectangular injection molded product made of an insulating plastic, and a plurality of horizontal parts 63 and vertical parts 61 of the hook-type busbar 60 may be inserted laterally. T-shaped insertion groove 52 is formed spaced apart. In addition, the end support member 51 has a fastening hole 151 and a locking jaw 152 for fixing the end support member 51 up and down. Therefore, when the hook-shaped busbar 60 is inserted and fixed in the insertion through groove 52 of the end support member 51, the hook portion 62 of the hook-shaped busbar 60 is exposed to the outside.

In addition, the insulating cover 55 is an insulating plastic injection molding, and forms a U shape so as to surround the lower ends of the plurality of end support members 51 and the hook-type busbar 60. On both sides of the bottom plate 58, two inner and outer plates 53 and 54 are spaced apart in the longitudinal direction and formed integrally. In this case, a coupling protrusion 251 is formed at the upper end of the inner plate 53 to engage with the locking step 152 formed on the end support member 51, and the outer side plate 54 has a vertical side plate of the upper cover 57. The engaging projection to which the engaging projection 253 formed at the lower end of the 153 is formed. The vertical side plate 153 has a predetermined length so as to be sandwiched between the inner side plate 53 and the outer side plate 54 of the insulating cover 55. On the other hand, the bottom surface of the top plate 154 of the upper cover 57 is formed with a plurality of spacer members 155 in the longitudinal direction. The spacer member 155 is composed of two elastic stone pieces 156 that are bent symmetrically outward. The elastic stone pieces 156 are installed in parallel at predetermined intervals so as to be in contact with the hook portion 62 of the hook-type busbar 60.

Subsequently, the bus bar connecting member 70 is installed at a contact position of the third plate bus bar 30-3 installed perpendicular to the hook bus bar 60 of the branch bus bar 50. As shown in FIGS. 14 to 16, the connecting member 70 crosses a plurality of hook-shaped busbars 60 installed in a horizontal direction and a plurality of third plate-shaped busbars 30-3 installed in a vertical direction. The third plate-shaped busbar 30-3 is coupled to the hook portion 62 of the hook-type busbar 60 by being fixed to the insulating case 71 and the insulating case 71 installed at the contact point. It consists of a fixing bracket member 73 for pressing and fixing.

First, as shown in FIG. 15, the insulating case 71 is a plastic molded article having a predetermined length so as to be orthogonal to a plurality of hook-type busbars 60 installed in a horizontal direction spaced vertically, A lower side wall 172 having a plurality of guide grooves 171 formed therein is integrally formed at a lower portion of the upper plate 174 having a predetermined size, and the upper plate 174 of the upper plate 174 is integrally formed. The vertical side wall 173 is integrally formed at the upper portion so as to guide the third plate busbar 30-3 installed in the vertical direction. In addition, a rectangular opening 175 in which the fixing bracket member 73 is installed at a predetermined position of the upper plate 174, that is, a contact position where the third plate bus bar 30-3 and the hook bus bar 60 are perpendicular to each other. ) Is formed. In addition, a fixing rib 176 for fixing the fixing bracket member 73 at a predetermined position is integrally protruded from the inner side of the vertical side wall 173. At this time, the upper plate 174 is formed with a perforation line 275 to form the openings 175 at different contact positions.

On the other hand, as shown in Figure 16, the upper portion of the insulating case 71 is provided with a U-shaped cover 75, the cover 75 is a predetermined hook 178 is formed on both sides of the insulating case ( 71 is detachably coupled to the locking groove 276. In addition, the front or rear of the cover 75 is integrally formed on the front and rear side wall 179, the cutting groove 278 is formed to be easily removed as needed.

15 and 16, the fixing bracket member 73 installed on the upper plate 174 of the insulating case 71 may be caught by the hook portion 62 of the hook-type busbar 60. And a bottom surface of the upper plate 174 so as to be in close contact with the upper surface of the hook portion 62 of the hook-shaped busbar 60 and the U-shaped locking bracket 77 having the locking portion 177 bent downward. The locking device 77 is provided with a screw means to press the connecting plate 78 having a predetermined size and a third plate-shaped busbar 30-3 positioned on the upper surface of the connecting plate 78. Consists of a pressure bracket (79) installed in.

At this time, the locking bracket 77 is a metal plate bent in a c-shape, a pair of locking portions 177 bent downwardly is integrally formed at the bottom thereof, and a pair of locking portions 177 are connected to the upper portion thereof. Horizontal connecting portion 277 is formed integrally. In addition, the horizontal connection portion 277 is formed with a fastening hole 377 to which the screw of the pressing bracket 79 is fastened. In addition, the pressing tool 79 is integrally fixed to a threaded portion 279 of a predetermined length screwed into the fastening hole 377 and the distal end of the screwed portion to press the upper surface of the third plate-shaped bush 30-3. It consists of a pressing plate 179 of a predetermined size. At this time, a polygonal groove is formed at the tip of the screw portion 279.

Subsequently, the insulating portion 71 is orthogonal to the plurality of hook-type busbars 60 so that the locking portion 177 of the locking bracket 77 is connected to the hook portion 62 of the hook-type busbar 60. Make sure it is hung over. Then, the third plate-shaped bus bar 30-3 is positioned between the connecting plate 78 and the pressure plate 179. Subsequently, when the pressing plate 79 provided in the locking bracket 77 is rotated to move the pressing plate 79 downward, the pressing plate 79 presses and connects the third plate-shaped busbars 30-3. While being in close contact with the plate 78, the locking portion 177 is pulled toward the insulating case 74 to be firmly fixed to the hook portion 62 of the hook-type busbar 60. Accordingly, the hook-type busbar 60 and the third plate-shaped busbar 30-3 are electrically and mechanically connected. As such, the busbar connecting member 70 according to the present invention has a plurality of hook-type busbars that are orthogonal to each other without cutting, bending and hole processing for the hook-type busbar 60 and the third plate-shaped busbar 30-3. (60) and the 3rd plate-shaped busbar 30-3 can be selectively connected.

Subsequently, a plurality of detachable adapters 90 are installed in the plurality of branch busbars 50 installed in the horizontal direction. And the removable adapter 90 is provided with a plurality of circuit breakers (5). That is, as shown in FIGS. 17 to 19, the detachable adapter 90 is mechanically stretched orthogonally with respect to the branch busbar 50 including a plurality of hook-type busbars 60 installed in the horizontal direction. Not only fixed but also electrically connected to supply the circuit breaker 5 for power distribution.

That is, the removable adapter 90 is a rectangular adapter case 91 formed with a plurality of guide grooves 94 formed on the lower side wall to guide the plurality of hook-shaped busbars 60 installed in the horizontal direction, and An adapter fixing bracket 97 provided on the upper plate 92 constituting the adapter case 91 and covering the hook portion 62 of the hook type busbar 60, and the upper plate 92 of the adapter case 91. A cable means 95 which is installed on the bottom surface of the hook busbar 60 and the circuit breaker 5 for electrical distribution, and is installed on an upper portion of the adapter case 91, and the circuit breaker 5 for electrical distribution. It consists of the installation means 94 to which the switch 5-1 and the overload protection relay 5-2 are fixed.

First, as shown in FIGS. 18 and 19, the adapter case 91 is formed of an injection molded material made of insulating plastic, and an upper side wall 191 having a predetermined height is formed at an upper portion of the upper plate 92 having a predetermined size. A plurality of guide channels 192 are formed on the bottom surface of the upper plate 92 and guide the cable means 95 made of a band-shaped metal plate having a predetermined width. In the predetermined position of the guide channel 192, adapter fixing brackets 97 connected to the hook portion 62 of the hook-type busbar 60 are respectively provided.

In this case, the cable means 95 has a different length so as to be selectively connected to a plurality of hook-type busbars (60). For example, the cable means 95 is connected to the hook portion 195 bent to connect to the hook portion 62 of the hook-type busbar 60, and the guide channel 192 formed on the bottom surface of the upper plate 92 A horizontal portion 196 guided along the terminal portion, a terminal portion 197 connected to the horizontal portion 196 and bent to be positioned above the upper plate 92 and provided with a connection terminal 199 at an end thereof; One end is connected to the terminal portion 197 through the connection terminal 199 and the other end is made of a connection cable 198 connected to the circuit breaker 5 for distribution. The cable means 95 is not limited to the illustrated embodiment because it can be applied or modified in various ways in the art.

 Meanwhile, referring to FIG. 19, the adapter fixing bracket 97 installed on the upper plate 92 of the adapter case 91 is formed by bending a conductive metal plate, and the hook portion of the hook-type busbar 60 is formed. And a locking portion 297 that is bent to one side so as to be caught by 62). The adapter fixing bracket 97 is installed in an opening formed in the upper plate 92. That is, the locking portion 297 of the adapter fixing bracket 97 passes through a gap of a predetermined interval formed between the connecting portion 195 and the opening of the cable means 95 and is positioned below the upper plate 92. In this case, the locking bracket 297 is a metal plate bent in a c-shape, a pair of locking portions 297 and a horizontal connecting portion 298 for connecting the locking portions 297, and formed in the horizontal connecting portion 298 It consists of a fixing bolt (299) rotatably fastened to the fastening hole. Accordingly, when the fixing bolt 299 is rotated to one side, the end of the fixing bolt 299 presses the bending plate 195 of the cable means 95 and at the same time the locking portion 297 toward the upper plate 92. It is pulled and fixed to the hook part 62 of the hook-type busbar 60.

Therefore, when the removable adapter 90 according to the present invention hangs in a direction orthogonal to a plurality of hook-type busbars 60 installed in the horizontal direction, the hook portion 297 hooks 62 of the hook-type busbar 60. ). Then, when the fixing bolt 299 is turned to one side, the locking portion 297 is tightly coupled to the hook portion 62 to be firmly fixed. Thus, the present invention is installed in a way that the removable adapter 90 to the hook-type busbar 60 can be easily assembled in the desired position as well as very easy to change and replace the position. Therefore, the module-type low-voltage power unit 1 according to the present invention, the hook-type busbar 60 by installing the circuit breakers 5 on the plurality of removable adapters 90 installed in the branch busbar 50. Not only does it need to be bent or holed, but the busbar does not need to be screwed into the input of the circuit breaker 5 individually.

20 and 21 are cross-sectional and perspective views showing another embodiment of the detachable adapter 90 according to the present invention. The detachable adapter 90-1 according to the present embodiment includes an elastic fixing means 80 that is elastically coupled to the hook portion 62 of the hook-type busbar 60. The elastic fixing means 80 is elastically coupled to the hook portion 62 when the detachable adapter 90-1 is inserted into the hook portion 62 of the hook-type busbar 60, the detachable adapter 90-1 ) Is prevented from escaping. As shown, the elastic fixing means 80 is guided to the guide channel 192 formed on the upper plate 92 of the detachable adapter 90-1 and bent to be electrically connected to the hook portion 62. From the connecting plate 81, the upper spring 82 seated in the seating groove formed in the upper plate 92 so as to press the bending connecting plate 81 in the downward direction, and the bending connecting plate 81 A lower pressing plate 83 disposed below the lower pressing plate, a lower spring 84 installed to press the lower pressing plate 83 at all times in an upward direction, and the lower pressing plate 83 and the lower spring 84; The fixing block is fixed to the bottom surface of the upper plate 92 by maintaining the gap so that the hook portion 62 can be elastically inserted between the bent connecting plate 81 and the support so as not to be detached It consists of 85. Therefore, when the hook portion 62 of the hook-type busbar 60 is inserted between the lower pressing plate 83 and the bending connecting plate 81, the lower pressing plate 83 and the bending connecting plate 81 pressed against in the opposite direction. It is closely connected to both surfaces of the hook portion 62 and is electrically connected as well as fixed mechanically.

In addition, the modular assembled low-pressure power unit 1 according to the present invention provides a modular assembled cabinet that can install the modular busbar system as described above. As illustrated in FIGS. 22 to 24, the cabinet 4 according to the present invention includes a plurality of pillars 410, and an upper frame 411 and a lower portion of a rectangular frame shape installed at upper and lower ends of the pillars 410. Frame (412) and side plates (left and right side plates and rear plates), not shown, which are provided on each side of the square frame formed by the pillars 410 and the upper and lower frames 411 and 412, and the upper part. An upper plate and a lower plate installed on the frame 411 and the lower frame 412, and a door 413 rotatably installed on the front of the frame. In addition, the cabinet 4 has various horizontal or vertical supports 415 and 416 installed between the pillars so as to support the diaphragm 414 vertically installed to partition the internal space and the unit installed in the switchboard. 417.

At this time, various side plates including the pillar 410, the upper and lower frames 411, 412, and the door 413, and the support 415, 417 has a plurality of circular and rectangular through holes 421. Perforated. Therefore, the cabinet (2) (4) according to the present invention is a pillar 410, upper and lower frames (411,412), diaphragm 414 and various supports (415, 416, 417), and each side plate without separate cutting, bending or hole processing Fast and easy assembly using fastening bolts or fasteners.

Hereinafter, the assembly process of the modular assembled low pressure power panel 1 according to the present invention will be described schematically.

First, as described above, the two cabinets 2 and 4 are assembled using a plurality of pillars 410, upper and lower frames 411 and 412, and various side plates and doors 413. In addition, a plurality of rectangular bus bars 20-1 are horizontally installed on the first cabinet 2. At this time, the square bus bar 20-1 is supported by the support means 500 installed across the upper frame 411. As shown in FIG. 8, the support means 500 is fixed to the support 501 installed on the bottom of the upper frame 411 and to the bottom of the support 501 to fix the rectangular busbar 20-1. It consists of a fixed insulating member 502. The support 501 is formed with a plurality of fastening holes and hook-shaped locking pieces 503 are integrally formed at both ends so as to be coupled to the rectangular through holes formed in the upper frame 411. And the fixing piece 505 is provided at both upper ends of the support 501. The fixing piece 505 is formed with a locking fixing piece 507 for coupling to the rectangular through hole formed in the upper frame 411 and a fastening hole 509 for fastening with the support 501. Therefore, after the support 501 is installed on the upper frame 411, the fixing piece 505 may be used to fix the support 501 more firmly.

In addition, the fixed insulating member 502 is an insulating plastic injection molding, which is combined with the upper insulating member 504 having a U-shape surrounding the upper end of the rectangular bus bar 20-1, and the lower end of the upper insulating member 504. The lower insulating member 506 supporting the bottom of the rectangular busbar 20-1, and the upper insulating material 504 and the lower insulating member 506 are coupled to each other and fixed to the bottom of the support 501. Bolt 508. Accordingly, the fastening bolts 508 are inserted into the upper insulating material 504, the lower insulating member 506, and the supporter after passing through the rectangular busbars 20-1 between the upper insulating member 504 and the lower insulating member 506. When fastening through the fastening hole of 501, the rectangular bus bar 20-1 may be horizontally installed on the upper part of the cabinet 2. On the other hand, an insulating cover 220 made of an insulating material is coated on the outer circumferential surface of the rectangular bus bar 20-1. The insulating cover 220 is composed of two c-shaped insulating cover, the side plate 224 of each insulating cover 220 is a protrusion 221 which is inserted into the guide groove 21 of the square bus bar 20-1. Is formed in the longitudinal direction. Therefore, the insulation cover 220 can be easily installed without a separate mechanical processing.

Subsequently, the plate busbars 30: 30-1 and 30-2 are vertically installed at the rear side of the cabinet 2. At this time, the plate-shaped bus bar 30 is a plurality of plate-like bars are stacked spaced apart, the bent boot bar 31 is coupled to the top or bottom. At this time, the plate-shaped bus bar 30 is fixed by the support member 600. As shown in FIG. 24, the support member 600 is horizontally installed between the pillars and is provided in the support rail 416 having the guide groove 401 and the guide groove 401 of the support rail 416. Being made of wing support (601). The wing support 601 is an insulating plastic injection molding, which is installed between the plate-shaped busbars 30 installed in the vertical direction, and a plurality of support wings 602 formed at predetermined intervals so as to be inserted between the stacked plate-shaped bars. A support rod 603 formed integrally with a plurality of support wings 602, a slide plate 604 slidably installed in the guide groove 401 of the support rail 416, the slide plate 604 and the support rod It consists of a fastening bolt 605 penetrating the fastening hole formed in 603. As shown in FIG. Therefore, the blade support 601 is inserted into the guide groove 401 of the support rail 416 and installed at a predetermined position, and then the fixing in a state where a plurality of plate-shaped busbars 30 are positioned between the support wings 602. When the bolt 605 is fastened, a plurality of plate-shaped bus bars 30 can be easily installed.

 On the other hand, the inner end of the rectangular bus bar 20, as shown in Figure 25, is supported by a through support member 710 made of an insulating material. The through support member 710 is an injection molded material made of an insulating plastic material, the bottom member 711 of the U-shape surrounding the lower portion of the rectangular busbar 20, and coupled to the upper portion of the lower member 711, the rectangular busbar The upper member 712 is in contact with the upper surface of the 20, and the lower member 711 and the upper member 712 is integrally coupled to the fastening bolt 713 for fixing them to the support 501. . At this time, the fastening bolt 713 is loosely fastened to the extent that the square bus bar 20 can be moved in the longitudinal direction.

The end portions of the rectangular busbar 20-2 provided at the lower part of the first cabinet 2 and the rectangular busbar 20-3 provided at the lower part of the second cabinet 4 are spaced apart from each other. The elastic member 801 is installed. As shown in FIG. 25, the elastic member 801 includes slides 22 installed in the T-shaped guide grooves 21 of the two rectangular busbars 20-2 and 20-3, and a conductive metal. And a fixed busbar 803 for fixing the slide 22 through a fastening hole formed in the stretchable busbar 802 and the flexible busbar 802 which is curved at a predetermined curvature so as to freely stretch according to temperature. It is composed. Therefore, by installing a plurality of expansion and contraction busbars 801 on the outer circumference of the rectangular busbar 20 using the fixing bolt 803 and the slide 22 can buffer the expansion and contraction of the rectangular busbar according to the temperature change. have.

On the other hand, the first cabinet 2 and the second cabinet 4 are installed in close contact with each other side. The first cabinet 2 and the second cabinet 4 are fixed by fastening members (not shown). In addition, a diaphragm 414 as shown in FIG. 23 is installed in the second cabinet 4. The diaphragm 414 is a metal plate of a predetermined size, each corner is bent and four corners are provided with a coupling piece 444. The partition 414 is preferably provided with a plurality of branch busbars 50 in parallel.

Subsequently, a plurality of removable adapters 90 are installed in the branch busbar 50. As described above, the detachable adapter 90 is installed by hooking the hook portion 62 of the hook-type busbar 60. Thus, the detachable adapter 90 is very easy to install and very easy to move and replace. Then, a circuit breaker 5 for distribution is installed on an upper surface of the detachable adapter 90, and an AC switch 5-1 and an overload protection relay 5-2 are electrically connected to a load end of the circuit breaker 5 for distribution. Connect in order to install. The circuit breaker 5, the AC breaker 5-1, and the overload protection relay 5-2 are installed quickly and easily through an installation unit 94 installed on an upper surface of the detachable adapter 90. The connection cable 198 of the adapter 90 is connected to the input terminal of the circuit breaker 5 for distribution. Finally, the modular low-voltage power board 1 according to the present invention is assembled to the output terminal of the overload protection relay 5-2 by electrically connecting each power load of the consumer.

Next, FIG. 26 is a schematic front view showing another embodiment of a modular low voltage power train according to the present invention. As shown, the low pressure power panel 1 according to the present embodiment vertically installs a plurality of branch busbars 50 inside the second cabinet 4, and a plurality of branch busbars 50 on each branch busbar 50. The removable adapter 90 is installed in the orthogonal direction, and then a plurality of circuit breakers 5 are installed thereon.

In this case, the branch bus bar 50 and the third square bus bar 20-3 are electrically connected to each other by a connector member including a fourth bus bar connector 40-4 and a second bus bar connecting member 70-2. And mechanically connected. The fourth busbar connector 40-4 has a structure in which a bending bus bar 31 is connected to an upper surface of the third square bus bar 20-3. Accordingly, the fourth busbar connector 40-4 has a structure similar to the second or third busbar connector 40-2 and 40-3 shown in FIG. 12.

Subsequently, a plurality of detachable adapters 90 are installed perpendicularly to the plurality of branch busbars 50 installed vertically. And the adapter 90 is provided with a plurality of circuit breakers (5). At this time, the removable adapter 90 is preferably provided with an elastic fixing means (80) in order to be closely fixed to the hook-type busbar 60 or T-shaped busbar. In addition, if necessary, it may further include a separate fixing means for fixing the removable adapter 90 to the diaphragm 414 installed in the second cabinet (4).

delete

Meanwhile, as shown in FIG. 26, a plurality of fourth rectangular busbars 20-4 electrically connected to the second rectangular busbars 20-2 are provided in a lower portion of the first cabinet 2 in a stepwise manner. Various types of loads can be connected. In this case, the cable fixing means 821 for fixing the cable for the load is installed in the guide groove 21 of the fourth rectangular busbar 20-4.

In the above, the preferred embodiment of the modular assembled low-pressure power panel according to the present invention with reference to the accompanying drawings in detail, but those skilled in the art to which the present invention pertains various modifications or design changes from the above-described embodiment The scope of the present invention is not limited to the above-described embodiment.

As described above, the modular assembled low pressure power panel according to the present invention comprises a rectangular cabinet frame using modular cabinet parts such as pillars, upper and lower frames and supports having circular and rectangular through holes formed therein. By assembling the side plate and the door, and the upper plate and the lower plate on each side of the frame, a cabinet of a predetermined size can be assembled without mechanical processing such as cutting, bending and hole processing.

In addition, the modular assembled low-pressure power panel according to the present invention, various busbars, such as a rectangular busbar formed with a T-shaped guide groove, a plate-shaped busbar coupled to a bent booth bar at both ends, and a hook-shaped busbar integrally formed with a hook portion, By using the busbar connector and the busbar connecting member formed to connect these orthogonal busbars electrically and mechanically, the busbar system having a desired shape can be easily and quickly assembled without mechanical processing such as cutting, bending and hole processing.

In addition, the modular assembled low-voltage power panel according to the present invention can be easily installed by providing a detachable adapter that can be electrically and mechanically connected to a plurality of hook-type busbars simply by being orthogonal to the horizontally installed branch busbars. In addition, the installation location can be changed or replaced if necessary.

As described above, the modular assembled low pressure power panel according to the present invention is easy to use a modular bus bar without cutting, bending or hole-making a bus bar in assembling a low pressure power panel by electrically and mechanically connecting a bus bar which is orthogonal. It can be connected quickly, and the breaker for distribution is detachably installed in the branch busbar, so it is easy to install and replace, and the cabinet space can be used efficiently to make it compact.

Therefore, the present invention, unlike the conventional low pressure power panel that requires bending and hole processing of the busbar when assembling the low pressure power panel by easily assembling each component quickly and easily by using a fastening screw or fastening member without a separate mechanical processing It simplifies the process, greatly shortens the working time, and can be easily assembled by non-skilled personnel.

Claims (11)

A cabinet forming an internal space of a predetermined size; (a) a first main busbar device for connecting the input terminal of the main circuit breaker installed in the cabinet and the output side of the transformer, and (b) the three branch busbars installed horizontally or vertically in the output terminal of the main circuit breaker and inside the cabinet. A busbar connecting member for electrically connecting a second main busbar device connected to the bus bar apparatus, (c) a plate busbar orthogonal to the hook busbar of the branch busbar, and (d) to the hook busbar of the branch busbar. A busbar system comprising a branch busbar device comprising a plurality of detachable adapters connected in an orthogonal direction and electrically and mechanically connected; A plurality of distribution breakers electrically and mechanically connected to the removable adapter; The module assembled low-voltage power panel, characterized in that it comprises an AC switch and an overload protection relay (MS) installed in the load end of the circuit breaker to control the power. The method of claim 1, The first and second main busbar devices comprise (a) a rectangular busbar and a plate-shaped busbar, and (b) the rectangular busbar is a copper rod having a rectangular cross section and is T-shaped along each side in the longitudinal direction. Guide grooves are formed, and (c) the plate-shaped bus bar is three plate-shaped copper bar is stacked, the lower side of the module assembly type low pressure power, characterized in that the bent booth bar is provided with a horizontal connection is bent in the form of a half. The method according to claim 1 or 2, The first main busbar device includes: (a) a first rectangular busbar installed in a horizontal direction parallel to the upper part of the cabinet, (b) a first plate busbar installed in a vertical direction at an input end of the main breaker; c) a first busbar connector for electrically connecting the first rectangular busbar and the first plate busbar; The first busbar connector may include (d) a T-shaped slide provided in a T-shaped guide groove formed on a bottom surface of the first rectangular busbar, and (e) a lower end portion of the first rectangular busbar in which the T-shaped slide is located. A c-shaped connecting block installed to wrap, and (f) an insulating box inserted and fixed at a lower end portion of the c-shaped connecting block fixed to the first rectangular busbar, and installed across three square bars, (g) the Module assembly type low pressure, characterized in that it comprises an insulating box and the horizontal connection portion of the first plate-shaped busbar inserted into the insulating box, the U-shaped connection block and the fixing bolt for fixing the T-shaped slide to the first square busbar Power board. The method according to claim 1 or 2, The second main busbar device, (a) a second plate-shaped busbar connected to the output terminal of the main circuit breaker vertically, (b) a second rectangular busbar installed in parallel to the lower portion of the cabinet, ( c) a second busbar connector for electrically connecting the second plate-shaped busbar and the second rectangular busbar, (d) a third rectangular busbar installed horizontally in the lower part of the cabinet, and (e) perpendicular to the inside of the cabinet. A third plate busbar disposed in parallel in the direction, and (f) a third bus bar connector for electrically connecting the third box bus bar and the third plate bus bar; The second and third busbar connectors may include (g) a T-shaped slide slidably installed in the T-shaped guide grooves of the second and third square bus bars, and (h) the second and third square booths. An o-shaped connecting block surrounding the upper end of the bar, and (i) an opening is formed at a predetermined position of the lower plate so that the upper end of the U-shaped connecting block can be inserted from the bottom and is fixed to the lower ends of the second and third plate-shaped bus bars. An insulating box of a predetermined length having a rear and an upper surface open so that the horizontal bent portion of the bent bus bar is inserted; and (j) an insulating box of the second or third plate-shaped bus bar is inserted from an upper portion of the insulating box. Module assembly type low-voltage power unit characterized in that it comprises a fixing bolt which is fixed through the fastening hole formed in the box, the U-shaped connection block and the T-shaped slide. The method of claim 1, The branch busbar device includes a busbar electrically and mechanically connected to three branch busbars installed in the cabinet in a horizontal direction and a plate busbar of a second main busbar device installed in a vertical direction with the three branch busbars. And a plurality of detachable adapters connected to the connecting device and the branch busbars installed in the horizontal direction in an orthogonal direction and electrically and mechanically connecting the circuit breaker for power distribution. The method according to claim 1 or 5, The branch busbar may include three hook-type busbars spaced vertically and horizontally installed, an end support member supporting both ends of the hook-type busbars, and the hook-type busbars and end support members. Module assembly type low pressure power board, characterized in that configured to include an insulating cover surrounding. The method of claim 6, The hook-shaped busbar is composed of a vertical portion, a hook portion bent at right angles from one end of the vertical portion, and a horizontal portion integrally formed at the lower end of the vertical portion and protruding at right angles to both sides. Module assembly type low-voltage power unit characterized in that the 'L' has a combined shape. The method of claim 5, The busbar connecting member may be installed at an intersection point of three hook-shaped busbars installed in a horizontal direction and three third plate-shaped busbars installed in a vertical direction, and an insulating case for guiding the hook-shaped busbars and the third plate-shaped busbars. And a fixing bracket member fixed to the insulating case and coupled to the hook portion of the hook-type busbar and pressurizing and fixing the third plate-shaped busbar.       The method of claim 5, The detachable adapter may include a rectangular adapter case having three guide grooves formed on a lower sidewall thereof to guide three hook-shaped busbars installed in a horizontal direction, and a hook of the hook-type busbar installed on the upper plate constituting the adapter case. Adapter fixing brackets extending over the neck, cable means installed at the bottom of the upper plate of the adapter case to allow the hook-type busbar and the circuit breaker to be electrically connected to each other, and a circuit breaker installed at the top of the adapter case to fix the circuit breaker. Modular assembly type low pressure power board, characterized in that configured to include a mounting means. In the low-voltage power panel comprising a busbar system for electrically connecting the main circuit breaker installed in a cabinet of a predetermined size and a plurality of distribution circuit breakers connected to a plurality of loads, A first main busbar device connecting the input terminal of the main breaker installed in the cabinet and the output side of the transformer; A second main busbar device for connecting three branch busbars installed perpendicular to the output terminal of the main breaker; A branch busbar device including three branch busbars electrically connected to the second main busbar device and a detachable adapter installed in the orthogonal direction and electrically and mechanically connected to the branch busbars; Modular assembly low pressure power panel, characterized in that configured to include. The method of claim 10, The branch busbars may include three hook-type busbars spaced from the left and right and installed in parallel in the vertical direction, an end support member supporting both ends of the hook-type busbars, and the hook-type busbars and the end support members. A busbar connector configured to include an insulating cover and an insulating cover that wrap around the busbar connector to electrically and mechanically connect a rectangular busbar installed in parallel to the hook-type busbar in a horizontal direction, and to the busbar connector. And a bent bus bar arranged coaxially with the hook bus bar, and a bus bar connection member for electrically and mechanically connecting the hook bus bar.

Images