KR100500864B1 - Power distributor and control center - Google Patents

Abstract

The power divider is mounted in a control center in which a plurality of control units are stored, and is installed between a bus bar and a control unit installed in the control center, and a power divider for supplying power to a plurality of control units from the bus bar. Units are housed in multiple stages in the control center and arranged in multiple stages in each stage. One power distributor is installed for each of the control units housed in each stage. Means, a branch conductor connected to the bus bar connection means for distributing power from the bus in correspondence with the control unit, and one side connected to the branch conductor, and the other side connected to the main circuit connector on the power supply side of the control unit to grip the bus. Main circuit engaging means for supplying power from the main unit, and the main circuit connector and grip side of the load side of the control unit. Load side main circuit engaging means for outputting power distribution from the control unit to the outside, and distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit. The means, the load side main circuit engaging means, and the distributor side control circuit connector are provided with a plurality of sets corresponding to the number of control units provided at each stage.

Description

Power Splitter and Control Center {POWER DISTRIBUTOR AND CONTROL CENTER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control center as a switchgear for performing start control protection and the like of a motor used in a power plant and the like, and more particularly, to a control center for storing a plurality of control units.

The control center is used for a power plant and the like, and is connected to each of the equipment such as a motor or a light by winding, and distributes power to each equipment and simultaneously controls the equipment.

In the control center, control units connected to each equipment and wires, and busbars for supplying power to the control units are housed.

In order to control the above-mentioned equipment, the control unit is composed of a unit including a breaker or a fuse switch, a relay, a switch, and the like. The control unit distributes the power from the bus to the equipment and simultaneously controls the distribution by external control signal or manual operation from the outside.

The control unit also protects the equipment from accidental currents by means of breakers or fuses.

In general, such a control center has a plurality of control units described above. In the conventional control center, the control units are stacked and stored in multiple stages in the center, but only one control unit is arranged in one stage.

The wirings connected to each control unit, that is, the wires connected from each equipment and the conductors connected from the bus bar, are fixed to the terminal blocks of the control unit with screws.

In the conventional control center having such a configuration, it is required to improve the storage efficiency of the control unit to reduce the body of the control center to reduce the occupied area.

On the other hand, in the conventional control center, since the wires and conductors for supplying power from the bus bar are screwed to the terminal block of the control unit, the bus power supply needs to be interrupted when the control unit is added or changed. there was.

The present invention has been invented to solve the above-mentioned problems. In the control center, a plurality of control units can be stored in one stage, thereby improving the storage efficiency and adding control units without interrupting the bus power supply. It is an object to obtain a power divider and a control center with a power divider to enable the change.

(Initiation of invention)

The power splitter of the present invention is mounted between a bus bar and a control unit mounted in a control center in which a plurality of control units are housed and wired in the control center, and a plurality of power splitters for supplying power to the plurality of control units from the bus bar. Control units are arranged in multiple stages in the control center and in a plurality of stages in the horizontal direction. One power distributor is provided for each of the control units housed in each stage. A branching conductor connected to the engaging means and the bus bar engaging means for distributing electric power from the bus in correspondence with the control unit and one side is connected to the branch conductor, and the other side is connected to the main circuit connector of the control unit with a grip and connected to the control unit. Main circuit engaging means for supplying power from the bus, and main circuit for load side of the control unit A load side main circuit engaging means for gripping a connector and outputting power distribution from the control unit to the outside, and a distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit. The power supply main circuit engaging means, the load main circuit engaging means and the distributor control circuit connector are provided in plural in accordance with the number of control units provided at each stage. The main circuit engagement means of the power supply side is a distributor side power grip type which is inserted into and grips the unit side power grip of the control unit, and the load side main circuit engagement means is fitted into the unit side load grip of the control unit. to be.

Moreover, a plurality of sets of power supply main circuit engaging means, load side main circuit engaging means, and distributor side control circuit connector are provided on one side of the front panel.

In addition, the control center has a box-type unit chamber for storing a plurality of control units and a bus-bar chamber for storing a bus bar at the rear side of the unit chamber in the up and down direction of the control center, and a power distributor is provided between the unit chamber and the bus chamber. It also serves as a partition.

In addition, the control center of the present invention is multi-stage, and each stage is provided with a plurality of control units arranged in a horizontal direction, a bus bar provided in the center, and one control unit housed in each stage between the bus bar and the control unit. A control center having a power divider for supplying power to a plurality of control units in a power supply system, the power divider being connected to the bus bar and the bus bar engaging means and connected to the bus bar connecting means to distribute the power from the bus to the control unit. Power supply main circuit engaging means for supplying power from the bus bar to the control unit by connecting the branch conductor and one side to the branch conductor and the other side connected to the main circuit connector of the control unit by a grip, and the load side main circuit connector of the control unit. Number of main circuits on the load side that outputs the power distribution from the control unit to the outside by grip connection And a distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit. The main circuit engaging means of the power supply side, the main circuit engaging means of the load side, and the distributor side control circuit connector each have a A plurality of sets are provided corresponding to the number of control units provided in the stage.

Further, guide means for guiding the control unit in the advancing direction with respect to the power distributor is provided.

The main circuit engaging means of the power distributor of the power distributor is a splitter side power grip type which is inserted into and grips the unit side power grip of the control unit. Side load grip terminal block.

Further, a plurality of sets of power supply main circuit engaging means, load side main circuit engaging means, and distributor supply control circuit connectors of the power distributor are provided on one surface of the front panel.

In addition, a box-type unit chamber for storing a plurality of control units and a bus chamber for storing a bus bar are installed in the unit chamber in the up and down direction of the control center on the rear side, and the power distributor serves as a partition between the unit chamber and the bus chamber. have.

1 is a front view showing an embodiment of a control center (distribution board) of the present invention.

2 is a perspective view of a control center.

3 is a cross-sectional view taken along arrow III-III of FIGS. 1 and 2.

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is an enlarged main view of a portion of FIG. 4;

6 is a perspective view showing one control unit.

7 is a perspective view of the control unit seen from behind;

8 is a perspective view showing a state in which the control unit is completely removed from the control center and the door of the power distribution room is removed.

Fig. 9 is a sectional view showing one unit chamber from which the control unit is removed.

10 is a perspective view of a shelf board forming a unit chamber.

11 is a plan view of a shelf plate.

12 is a perspective view of the partition plate of the unit chamber.

13 is a front view of a partition plate;

14 is a side view of a partition plate;

Fig. 15 is a perspective view showing a state in which a control unit and a power distributor are connected.

16 is a perspective view of a power distributor.

17 is an enlarged perspective view of a main portion of a side portion of a control unit inside a control center;

18 is a cross-sectional view showing a connection state between a power distributor and a vertical branch bus.

19 is an exploded perspective view showing major components in the center;

20 is a top view of a power distributor

21 is a right side view of the power splitter.

22 is an exploded perspective view illustrating components of a power distributor.

Fig. 23 is a perspective view showing in detail the inside of the power distributor.

Fig. 24 is a front view showing the branch conductor shape inside the power distributor.

FIG. 25 is a cross-sectional view taken along the line XXV-XXV in FIG. 24 in the direction of the arrow; FIG.

Fig. 26 is an exploded perspective view showing the structure of the branch conductor and the distribution conductor.

Fig. 27 is a sectional view showing a state in which one control unit is taken out to a test position.

Fig. 28 is a sectional view in the direction of the arrow along the line XXVIII-XXVIII of Fig. 27 showing that the control unit is the connecting position;

FIG. 29 is a cross-sectional view in the direction of the arrow along line XXVIIII-XXVIIII of FIG. 27 showing that the control unit is in the test position. FIG.

(The best form to carry out invention)

Example 1.

1 is a front view showing an embodiment of the control center of the present invention.

2 is a perspective view of a control center.

1 and 2, a plurality of control units 3 are arranged and housed regularly in a checkerboard scale form in the rectangular box-shaped control center 1.

In the control center 1 of this embodiment, 40 control units 3 are accommodated in four rows in the horizontal direction, 10 steps in the longitudinal direction, and the whole.

3 is a cross-sectional view taken along arrow III-III of FIGS. 1 and 2.

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is an enlarged main view of a portion of FIG. 4.

3 to 5, narrow box-type power distributors 4 are arranged on the rear side of the four control units 3 arranged in the horizontal direction.

One power distributor 4 is provided for four control units 3 provided in each stage. That is, one power distributor 4 is provided at one end of the control unit 3.

The power divider 4 serves to distribute power to the four control units 3 as described later.

The power distributor 4 is formed with an inlet port 4a and exhaust ports 4b and 4c.

A busbar chamber 5 is formed on the rear surface of the power distributor 4 over the entire height direction of the control center 1.

In the busbar chamber 5, the vertical branch bus 16 which supplies electric power to the power distributor 4 is provided in the up-down direction.

The vertical branch bus 16 supplies a three-phase four-pole electric power to the inside of the control center 1 from the outside.

The vertical branch bus bar 16 consists of four conductors of three phases and neutral phases, and three conductors are L-shaped in cross section, and one conductor is I-shaped in cross section.

The busbar chamber 5 has a ventilation space therein.

On the other hand, in the side of the control unit 3 and the power distributor 4, the wiring chamber 6 is formed over the whole height direction of the control center 1.

In the wiring chamber 6, wiring extending from the control unit 3 to external equipment is accommodated, and a ventilation space is provided inside.

6 is a perspective view showing one control unit 3.

7 is a perspective view of the control unit 3 seen from behind.

One control unit 3 has a shape of a rectangular parallelepiped with a long length in the inward direction of the control center 1.

The control unit 3 includes a front plate 31 covering the front surface, a unit base 32 covering the bottom surface and one side surface, a main circuit connector attachment bracket 38 covering the rear surface, and a control circuit contactor attachment bracket 40. Have

The unit base 32 has a thin plate portion 32a formed on one side of the upper portion and a side portion 32b covering one side surface over its entire surface.

The upper surface of the control unit 3 and the side surface on the opposite side to the unit base 32 are not sealed but open.

This improves workability in assembling the control unit 3.

The control unit 3 is equipped with various devices therein for controlling external equipment.

In other words, first, the breaker 34 which becomes a fuse switch or a no fuse breaker is mounted in the front part.

And the electromagnetic switch 35 is mounted in the back part.

In addition, the electromagnetic switch 35 is comprised from the electromagnetic contactor 35a, the thermal relay 35b, etc. As shown in FIG.

On the front of the control unit 3, an operation handle 33 for switching ON / OFF of the breaker 34 is provided.

The operation handle 33 penetrates the front plate 31 and is connected to the blocking device 34. The operating handle 33 switches the ON / OFF of the blocking device 34 by rotating left and right about the axis.

On the other hand, in the latter half of the control unit 3, the main circuit connector mounting bracket 38 provided on the upper side has a power supply main circuit connector (unit side power grip) 26 and a load side main circuit connector (unit side load grip) 37. Are parallel to each other in the vertical direction.

In addition, a unit side control circuit connector 39 is provided horizontally in the control circuit connector mounting bracket 40 provided on the lower side.

8 is a perspective view showing a state in which the control unit 3 is completely removed from the control center 1 and the door of the wiring chamber 6 is removed.

9 is a cross-sectional view showing one unit chamber 2 from which the control unit 3 is removed. In the control center 1, the plurality of unit chambers 2 divided by the shelf board 1a are formed in multiple stages in the up-down direction.

The unit chamber 2 provided in each stage forms the storage chamber which accommodates four control units 3 partitioned by the partition board.

10 is a perspective view of a shelf board 1a forming a unit chamber 2;

11 is a plan view of the shelf board 1a.

Fig. 12 is a diagram showing the partition plate 1b partitioning the unit chamber 2;

13 is a front view of the partition plate 1b.

14 is a side view of the partition plate 1b.

Four sets of slits 1 a1 extending inwardly are perforated on the shelf board 1 a.

As for the partition plate 1b, the protrusion part 1b1 formed in the lower part of this slit 1a1 is mounted.

Four partition plates 1b are placed on the shelf board 1a of each stage, and the unit chamber 2 of each stage is divided into four storage chambers.

The partition plate 1b has a cross section A side plate 1b2, a horizontal portion 1b3 bent horizontally at the top of the side plate 1b2, and a narrow guide portion 1b4 bent downward again from the horizontal portion 1b3. Equipped with.

The control unit 3 of the rectangular parallelepiped which is long in an inner direction is accommodated in the space of the rectangular tetrahedron which is long in an inner direction partitioned by the partition plate 1b.

And it has a structure like a drawer which draws out in a front opening direction.

The guide part 1b4 acts as a guide when the control unit 3 enters and exits,

FIG. 15 is a perspective view showing a state where the control unit 3 and the power distributor 4 are connected.

Although four control units 3 can be connected to the power distributor 4, one control unit 3 is connected to both ends in FIG.

The power divider 4 supplies electric power to the plurality of connected control units 3.

One power distributor 4 of the present embodiment is provided with four control units 3 arranged in the lateral direction, and the back surface of the four control units 3 having a thin rectangular parallelepiped body is thin. It is arrange | positioned adjacent to the control unit 3 so that it may cover with the wide surface.

One power distributor 4 is provided behind the unit seal 2 at each stage, that is, a plurality of power distributors 4 are arranged side by side and cover the rear surface of the group of control units 3 arranged in a checkerboard scale. It is.

As shown in FIG. 4, FIG. 5, the bus bar 5 is provided in the rear side of the power distributor 4 group.

The bus bar 5 is formed over the entire height direction of the control center 1 in the vertical direction of the control center 1.

In the busbar chamber 5, the vertical branch bus 16 which supplies electric power to the power distributor 4 is accommodated.

16 is a perspective view of the power distributor 4.

As shown in FIG. 16, a split type suction port 4a for sucking air heated by the control unit 3 is provided on the front surface of the power distributor 4, that is, on the control unit 3 side.

On the other hand, on the back side of the power distributor 4, i.

Therefore, the arc gas generated by the accident of the control unit 3 can be easily discharged by this path, so there is no fear of affecting the buses housed in the bus chamber 5, and the accident occurred in the unit chamber 2 This can prevent the expansion.

FIG. 18 is a cross-sectional view showing a connection state between the power distributor 4 and the vertical branch bus line 16. As shown in FIG.

19 is an exploded perspective view showing the main components in the operation panel.

On the rear side of the power distributor 4, four vertical branch buses 16 are vertically provided in the control center 1 connected to an external bus bar.

The vertical branch bus bar 16 is made of a conductive material and has an L-shaped or I-shaped cross section so that the wide surfaces on one side thereof face each other, and are arranged in a row in the vertical direction.

These four vertical branch buses 16 extend vertically over the entire length in the height direction of the control center 1 at the rear of the plurality of power distributors 4 arranged in the vertical direction.

These four vertical branch buses 16 supply three-phase four-pole electric power to the control center 1.

The heat from the control unit 3 is discharged to the outside via the power distributor 4 and the wiring chamber 6.

In other words, the wiring chamber 6 functions as an exhaust chamber for discharging the heat moved through the power distributor 4 to the outside.

In the control center 1 configured as described above, the air introduced from the front opening of the unit chamber 2 is heated in the control unit 3 and externally through the power distributor 4 and the wiring chamber 6 as the exhaust chamber. Will flow into.

That is, the power distributor 4 can be utilized as a ventilation path for releasing heat.

Therefore, a large number of control units 3 can be installed at a high density, and a control center capable of discharging heat from the control unit 3 to the outside can be obtained without installing a special ventilation structure.

On the other hand, the exhaust port 4c formed on the side of the power distributor 4 also serves as an arc discharge opening generated inside the power distributor 4. That is, as shown in FIG. 17, the room formed in the upper part of the power distributor 4 which is the part in which the inlet port 4a and the exhaust port 4c were provided is a space in which no apparatus is provided.

FIG. 17 is a perspective view of the main portion in which the side portion of the control unit 3 inside the control center 1 is partially enlarged.

The wiring chamber 6 is formed in the side surface of the control unit 3 group and the power distributor 4 group.

The wiring chamber 6 is a space formed to accommodate the wiring connecting the control unit 3 and the external equipment to the entire length of the control center 1 in the vertical direction.

Inside the wiring chamber 6, a sufficient ventilation space for circulating heat from the control unit 3 is provided.

In the front of the power distributor 4, that is, the control unit 3, a split type air inlet 4a for sucking air heated by the control unit 3 is provided as described above.

That is, the wiring chamber 6 side is opened over the whole surface, and this opening forms the exhaust port 4c which discharges heat from the control unit 3. As shown in FIG.

And inside the wiring chamber 6, the ventilation space which distribute | circulates the heat | fever in the control unit 3 is provided.

The ventilation space extends in the vertical direction of the control center 1, and an exhaust port (not shown) is provided above the wiring chamber 6.

A split type exhaust port 4b for discharging heat from the control unit 3 is provided.

And inside the power distributor 4 there is a ventilation space for passing the heat in the control unit (3).

In addition, the bus bar 5 installed behind the power distributor 4 group has a ventilation space extending in the vertical direction.

In addition, an exhaust port (not shown) is provided above the busbar chamber 5. The heat from the control unit 3 is discharged to the outside via the power distributor 4 and the replicating chamber 5.

In other words, the busbar chamber 5 functions as an exhaust chamber for discharging heat moved through the power distributor 4 to the outside.

In the control center 1 configured as described above, air introduced from the front opening of the unit chamber 2 is heated in the control unit 3 and flows to the outside through the power distributor 4 and the busbar chamber 5 as the exhaust chamber. do. In other words, the power distributor 4 can be utilized as a ventilation path for releasing heat.

Therefore, the control center 1 of this embodiment can install many control units 3 at high density, and can also discharge heat from the control unit 3 to the outside without installing a special ventilation structure.

20 is a plan view of the power distributor 4.

21 is a right side view of the power distributor 4.

22 is an exploded perspective view showing components of the power distributor 4.

Fig. 23 is a perspective view showing in detail the inside of the power distributor 4;

FIG. 24 is a front view showing the state of the internal branch conductor of the power distributor 4. FIG.

FIG. 25 is a cross-sectional view taken along the line XXV-XXV in FIG. 24 in the direction of the arrow; FIG.

 26 is an exploded perspective view showing the structure of the branch conductor 8 and the distribution conductor 9.

20 to 26, the power distributor 4 forms a narrow box-shaped tetrahedron and has a flat front panel 4d on the front side of the control unit 3, and a vertical branch bus 16 on the rear side. The rear panel 4e is provided. On the rear surface of the power splitter 4, four pairs of common power grips 7 are placed on the vertical branch bus 16 side as busbar engaging means.

Four pairs of common power grips 7 are provided at positions corresponding to four vertical branch buses 16, respectively.

The common power supply grip 7 has two opposite terminals 7a and 7b, and is a so-called grip connection in which four vertical branch bus bars 16 are sandwiched between these two terminals 7a and 7b.

The two terminals 7a and 7b are provided in parallel at predetermined intervals, and have a slight corner processing inside the tip portion, and a step having a later stage is formed at the tip portion and the opposing inner portion. In addition, the two terminals 7a and 7b are connected in the vertical direction by moving the vertical branch bus 16 while moving in the direction of entering, that is, moving inward of the control center 1.

When the power distributor 4 is placed in the control center 1, the common power grip 7 is vertically branched by moving the power distributor 4 toward the vertical branch bus 16 in the direction of the common power grip 7. The common power supply grip 7 and the vertical branch bus 16 are connected by inserting the bus bar 16.

Next, the inside of the power splitter 4 will be described.

As shown in Fig. 23, the four branch conductors 8 are fastened to one end 8a with bolts 8c and electrically connected to the common power supply grips 7, respectively.

Four branch conductors 8 are arranged in the power distributor 4, and the other end 8b is connected to the four distribution conductors 9, respectively. Four distribution conductors 9 are arranged in the power distributor 4 in parallel in the horizontal direction.

Four distribution conductors 9 are provided with four distributor-side power supply grip tabs 10 at predetermined positions as power supply-side main circuit engagement means, respectively.

Each distributor side power grip tab 10 has a flat plate portion that protrudes toward the control unit 3 side.

The power supply grip tabs 10 of each of the distributors are arranged in a row in the vertical direction so that the flat plate portions are located in the same plane at positions corresponding to the control units 3.

The power supply grip tab 10 of the distributor side is connected to the distribution conductor 9 on one side, and the other side is inserted into the power supply grip 36 of the unit side of the control unit 3 so as to be grip-connected to the vertical direction with respect to the control unit 3. Power from bus 16 is supplied.

The distributor side load grip terminal block 11 is provided as a load side main circuit engaging means at a position corresponding to each control unit 3 of the power distributor 4. The distributor side load grip terminal block 11 is provided with four connection engaging members 11a which are arranged in a vertical direction. The four connection engaging elements 11a are inserted into the unit side load grip 37 of the control unit 3 and grip-connected to output the power distribution from the control unit 3 to the outside.

The distributor side load grip terminal block 11 is provided with screw stops 11b corresponding to four connection engaging elements.

An electric wire extending from the equipment is connected to the screw stop 11b via an external cable terminal block (not shown).

The distributor side control circuit connector 12 is provided at a position corresponding to each control unit 3 of the power distributor 4.

The distributor side control circuit connector 12 is formed of two connectors having a straight cross-section that is uneven, and is engaged with the unit side control circuit connector 39 of the control unit 3 to supply control signals to the control unit 3. And to the outside.

The control signal line in the control panel is connected to the distributor side control circuit connector 12 via an external cable terminal block (not shown).

In Fig. 16, the distributor side power grip tab 10, the distributor side load grip terminal block 11, and the distributor side control circuit connector 12 of the above-described power distributor 4 are all substantially the same as the front panel 4d. It is installed on the surface. More specifically, the distributor side power grip tab 10 and the branch side load grip terminal block 11 can be seen in a split hole drilled in the front panel 4d. The distributor side control circuit connector 12 protrudes from the front panel 4d.

Next, the back structure of the control unit 3 facing the front panel 4d of the power distributor 4 will be described.

As shown in FIG. 7, the power supply main circuit connector (unit power grip) 36 protrudes from the rear surface of the control unit 3 at a position corresponding to the power supply tap 10 of the distributor side of the power distributor 4. have.

In addition, a load side main circuit connector (unit side load grip) 37 protrudes at a position corresponding to the distributor side load grip terminal block 11.

The unit side power grip 36 and the unit side load grip 37 each have four grip connection terminals arranged in a vertical direction.

This grip connection terminal consists of two scissors-type terminals which oppose, and these two terminals are spaced apart at the front-end | tip part.

When the opposite terminals move in the vertical direction, the opposing divider side power grip tabs 10 and the connection mating member 11a of the divider side load grip terminal block 11 are sandwiched and connected.

The unit side control circuit connector 39 protrudes at a position corresponding to the distributor side control circuit connector 12 of the power distributor 4.

The unit side control circuit connector 39 is composed of two connectors having a straight cross-section that is uneven, and is engaged with the distributor side control circuit connector 12.

As described above, the partition plate 1b has an approximately cross section. It has a mold | type and has the narrow guide part 1b4 bent downward again by the horizontal part 1b3 bent horizontally.

The partition plate 1b is placed so as to cover the thin plate portion 32a and the side surface portion 32b of the control unit 3.

Then, the upper portion of the partition plate 1b has a lower portion formed by the horizontal portion 1b3 and the guide portion 1b4, and the cross-section of the U-shaped guide portion has a thin portion 32a with respect to the thin plate portion 32a. Engagement is maintained so that a small space | interval is movable so that the control unit 3 can move to the entrance / exit direction.

When the control unit 3 is placed on the shelf 1a, the control unit 3 is guided to the partition plate 1b and inserted into the control center 1 with a predetermined precision.

For this reason, the power grip 36 installed in the control unit 3, the unit side load grip 37, and the uni-side control circuit connector 39 each have a distributor side power grip tab 10 and a distributor provided in the power distributor 4, respectively. It can be suitably engaged with the side load grip terminal block 11 and the distributor side control circuit connector 12.

Thus, the thin plate portion 32a and the partition plate 1b of the unit base 32 constitute guide means for guiding the control unit 3 with respect to the power distributor 4 in the advancing direction.

In the control center of such a configuration, the power supplied from the vertical branch bus 16 is distributed in the power distributor 4 and supplied to the plurality of control units 3.

The control unit 3 controls the supplied power by the control signal inputted to the unit control circuit connector 39 or by manual operation from the outside to output to the unit side load grip 37. The power output to the unit side load grip 37 is distributed to the external equipment through the divider side load grip terminal block 11 to drive it.

In this way, in the power distributor 4 of the present embodiment, one side is connected to the branch conductor 8, and the other side is inserted into the unit side power grip 36 of the control unit 3 and grip-connected to the control unit 3. The power supply tap 10 of the distributor side for supplying electric power from the vertical branch bus 16 and the unit side load grip 37 of the control unit 3 are inserted into the grip and connected to each other so as to distribute power from the control unit 3. Splitter side control circuit connector, which is connected to the load grip terminal block 11 on the distributor side and the unit side control circuit connector 39 of the control unit 3 to output to the outside, and supplies the control signal to the control unit 3 and outputs it to the outside. (12) and the like, the control unit 3 can be connected to and separated from the power distributor 4 when the control unit 3 is added or changed, so that the vertical branch bus 16 can be controlled without power failure. The unit 3 can be added or changed. Will.

In the power distributor 4, a plurality of distributor side power grip tabs 10, a distributor side load grip terminal block 11, and a distributor side control circuit connector 12 corresponding to the control unit 3 are provided. Since they are provided in the front panel 4d, the storage efficiency can be improved by allowing the plurality of control units 3 to be stored in parallel in one stage in the control center 1.

FIG. 27 is a cross-sectional view showing a state where one control unit 3 is pulled out to a test position.

FIG. 28 is a cross-sectional view seen in the direction of the arrow along the line XXVIII-XXVIII of FIG. 27 showing that the control unit 3 is the connecting position.

FIG. 29 is a sectional view seen in the direction of the arrow along the line XXVIIII-XXVIIII of FIG. 27 showing that the control unit 3 is in the test position.

The control unit 3 moves the upper surface of the shelf plate 1a disposed under the control unit 3 in the front-rear direction and attaches it to the main circuit connector mounting bracket 38 so that each phase terminal is in the up-down direction. The main circuit power supply is connected to the main circuit connector 36 and the load side main circuit connector 37 by the power supply main main contact connector 36 and the load side main circuit connector 37 and connected to the power distributor 4. You can get a supply of.

In addition, the control unit 3 moves forward on the shelf plate 1a to draw the main circuit connectors 36 and 37 from the power distributor 4 so that the control unit connector control circuit connector is also in the disconnected state. It is possible to obtain a test position state in which the control circuit connector mounting bracket 40 for attaching (39) slides back and forth on the control unit base 32 so as not to be separated from the distributor side control circuit connector 12.

Here, the main circuit connectors 36 and 37 are each phase terminals of the power supply main circuit connector 36 and each phase terminal of the load side main circuit connector 37 so that each phase terminal is in the up and down direction as shown in FIG. Are arranged side by side.

According to this configuration, the main circuit connectors 36 and 37 can be arranged in a small occupied space, and high density installation can be accurately realized.

In addition, with respect to the main circuit connectors 36 and 37, each phase terminal of the power supply main circuit connector 36 and each phase terminal of the load side main circuit connector 37 are arranged side by side such that each phase terminal is in a horizontal left and right direction. You may also do it.

As described above, in the embodiment according to the present invention, the circuit breaker 34 and the electromagnetic switch 35 are disposed in the front and rear directions of the control unit 3, and the main circuit connector 36 and the load side circumference of the power supply side are disposed on the rear of the control unit 3. By arranging the furnace connector 37 and the control unit side control circuit connector 39, high-density installation is possible, and by using the control unit base 32 formed in an L-shape, workability in assembling the control unit 3 is achieved. In addition, it is possible to obtain a test position state where only the control circuit can be operated even in the main circuit disconnection state, thereby eliminating the need for an external power supply and improving work efficiency during the test.

According to the embodiment according to the present invention, a control unit 3 having an opening on the front surface of the board is installed as a component of the power distributor 4 so that the main circuit of the control unit 3 is an external main circuit of the bus line 16. In the control center (1) having a main circuit connecting portion connected to the control unit (1), a circuit breaker (34), which is a fuse switch or a no-fuse breaker having an operation handle (33), an electromagnetic switch (35) and a control unit for performing a control operation ( 3) main circuit connectors 36 and 37 for connecting the main circuit of 3) to the external main circuits on the power supply side and the load side, and a control circuit connector for connecting the control circuit of the control unit 3 to an external circuit such as a motor control circuit ( 39), the operation handle 33, the shutoff device 34, the transfer switch 35, and the main circuit contactors 36 and 37 are arranged side by side in the front and rear direction of the control unit 3, and the control The circuit connectors 39 and the main circuit connectors 36 and 37 have respective phase terminals up and down Alternatively, the connectors on the power supply side and the load side are disposed in parallel to each other so that the control connector 39 can be connected to an external circuit such as a motor control circuit at the main circuit connection position and the test position of the control unit 3, so that the fuse switch can be connected. In the case of using a breaker device made of a no-fuse breaker, it is possible to realize a high density installation and to control only the control circuit even when the main circuit is disconnected. Will be obtained.

In this way, the power distributor is mounted on a distribution board in which a plurality of control units are arranged and stored, and is installed between the bus bar and the control unit installed in the distribution board, and the bus line is inserted in the power distributor for supplying power to the plurality of control units from the bus. The common power grip to be inserted and connected to the common power grip, the branch conductor connected to the common power grip and distributing the power from the bus line corresponding to the control unit, and one side to the branch conductor, and the other side is inserted into the unit side power grip of the control unit. A splitter side power grip tab for grip connection to supply power from the bus to the control unit, a split side load grip terminal block inserted into the unit side load grip of the control unit and outputting power distribution from the control unit to the outside; It is connected to the control circuit connector on the unit side of the control unit to provide control signals to the control unit. The urgent has a distributor side control circuit connector, and a plurality of distributor side power grip tabs, a distributor side load grip terminal block, and a distributor side control circuit connector are provided in correspondence with the number of control units. Therefore, it is possible to store a plurality of control units in the switchboard to improve the storage efficiency and to control and connect the control units to and from the power distributor so that the control units can be connected and separated from each other. You can do that.

Also, since the plurality of distributor side power grip tabs, the distributor side load grip terminal block, and the distributor side control circuit connector are provided on one surface of the front panel, the storage efficiency is further improved by storing and arranging a plurality of control units in one stage. You can.

In addition, the switchboard according to the present invention is a switchboard having a plurality of control units arranged in a row, a bus bar provided in a board board, and a power distributor provided between the bus bar and the control unit to supply electric power to the plurality of control units from the bus bar. The power splitter includes a common power grip for inserting and connecting a grip wire to the bus bar, a branch conductor connected to the common power grip for distributing the power from the bus bar in accordance with the control unit, and one side to the splitter conductor, and the other to the power supply unit. The power supply tap of the distributor side, which is inserted into the power supply grip of the unit side and connected to the control unit, to supply power to the control unit, and the power supply of the control unit, which is inserted into the unit side load grip, connects the grip to output power distribution from the control unit to the outside. Controlled by connecting the load grip terminal block on the frequency divider side and the control circuit connector on the unit side of the control unit. The distributor side control circuit connector for supplying a control signal to the unit is provided. Since the distributor side power grip tab, the distributor side load grip terminal block, and the distributor side control circuit connector are provided in plural numbers corresponding to the number of control units, It is possible to store the unit to improve the storage efficiency and to add or change the control unit. The control unit can be stored and discharged by moving the power unit to the power distributor. To make the change possible.

In addition, since the guide means for guiding the control unit in the advance / reverse operation direction with respect to the power distributor is provided, the connection between the control unit and the power distributor can be facilitated, thereby improving workability.

In addition, since the power supply tab of the power distributor, the power grip tab of the distributor, the load grip terminal block of the distributor, and the control circuit connector of the distributor side are provided on one surface of the front panel, a plurality of control units can be arranged and arranged in one stage. The efficiency can be improved. In addition, since the control unit can be stored in a plurality of stacked in a multi-stage multi-stage, many control units can be stored in a narrow space can further improve the storage efficiency.

In the power divider of the present invention, a plurality of control units are mounted in a control center in which a plurality of control units are stored, and are installed between a bus bar and a control unit installed in the control center, and a plurality of power dividers for supplying power to the plurality of control units from the bus bar. A plurality of control units are arranged in the control center in a plurality of stages and in a horizontal direction in each stage. One power distributor is provided for each of the plurality of control units stored in each stage. A branching conductor connected to the engaging means, the bus bar engaging means for distributing the power from the bus in correspondence with the control unit, and one side connected to the branch conductor, and the other side connected to the main circuit connector of the control unit and grip-connected to the control unit. Main circuit engaging means for supplying power from the bus, and the main circuit of the load side in the control unit A load side main circuit engaging means for gripping a connector and outputting power distribution from the control unit to the outside, and a distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit. The main circuit engaging means of the power supply side, the main circuit engaging means of the load side, and the control side connector of the distributor side have a plurality of sets corresponding to the number of control units installed at each stage, so that a plurality of control units can be stored in the control center. In addition to improving efficiency, the control unit can be connected to and separated from the power distributor for connection and separation, thereby enabling the addition and change of the control unit in the control center without interrupting the bus.

The main circuit engagement means of the power supply side is a distributor side power grip tab which is inserted into and grips the unit side power grip of the control unit, and the load side main circuit engagement means is inserted into the unit side load grip of the control unit and the distributor side load is connected. Since it is a grip terminal block, the power distribution-side engaging means becomes a terminal block having a flat tab or a flat portion, whereby positioning at the time of engagement can be assured and an advantageous configuration can be obtained for securing space.

In addition, since a plurality of sets of power supply main circuit engaging means, load side main circuit engaging means, and distributor control circuit connector are provided on one surface of the front panel, a plurality of control units can be arranged and arranged in one stage so as to accommodate storage efficiency. Can be further improved.

In addition, the control center includes a box-type unit chamber for storing a plurality of control units and a bus-bar chamber for accommodating busbars, which is installed in the up and down direction of the control center on the rear side of the unit chamber, and a power distributor is disposed between the unit chamber and the bus chamber. It also serves as a divider, so there is no need to install a partition member elsewhere, so the number of parts can be reduced. In addition, one control center of the present invention is provided with a plurality of control units arranged in a plurality of stages horizontally in each stage, a bus bar installed in a board, and a plurality of control units housed in each stage between the bus bar and the control unit. A control center having a power divider for supplying power to a plurality of control units from a bus, wherein the power divider is connected to a bus bar engaging means and a bus bar engaging means connected to the bus bar for distributing power in the bus according to the control unit. A branch conductor, one side of which is connected to the branch conductor, the other side of which is connected to the main circuit connector of the control unit, the other side of which is connected to the main circuit connector of the control unit, to supply power from the bus to the control unit, and the main circuit connector of the load side of the control unit, Load-side main circuit engaging means for grip-connected and outputting power distribution from the control unit to the outside; and A distributor side control circuit connector and the like connected to the unit side control circuit connector of the unit for supplying control signals to the control unit, and the main circuit engaging means of the power supply, the main circuit engaging means of the load side, and the distributor control circuit connector at each end. Since a plurality of sets are installed corresponding to the number of installed control units, it is possible to store a plurality of control units to improve the storage efficiency and to move the control unit forward and backward to the power distributor when adding or changing the control unit. By storing and discharging, the control unit can be added or changed without interrupting the bus.

In addition, since a guide means for guiding the control unit in the advancing direction with respect to the power distributor is provided, the connection between the control unit and the power distributor can be facilitated and workability can be improved.

The power side engaging means of the power distributor is a divider side power grip tab which is inserted into and grips the unit side power grip of the control unit, and the load side main circuit engaging means of the power divider is inserted into the unit side load grip of the control unit. Since the load-gripping terminal block on the distributor side is a terminal block having a flat tab or a plate-shaped portion, the positioning means on the power divider side can be secured at the time of engagement and advantageously secured in space.

In addition, since a plurality of sets of power supply main circuit engaging means, load side main circuit engaging means, and distributor control circuit connector of the power distributor are provided on one side of the front panel, a plurality of control units can be arranged and arranged in one stage so as to be accommodated. To improve the storage efficiency.

In addition, a box-shaped unit chamber for storing a plurality of control units and a busbar chamber installed at the upper and lower sides of the control center on the rear side of the unit chamber are provided to accommodate the bus bar, and the power distributor serves as a partition between the unit chamber and the bus chamber. It is not necessary to install a partition member elsewhere, so the number of parts can be reduced.

Claims (3)

In a power distribution unit mounted in a control center in which a plurality of control units are stored, and installed between a bus bar and a control unit installed in the control center, and supplying electric power to the plurality of control units in the bus bar, the plurality of control units are controlled. A plurality of power distributors are arranged in a plurality of stages and arranged in a horizontal direction at each stage. The power distributor is provided with a plurality of control units housed in each stage. And a branch conductor connected to the bus bar connection means for distributing the power from the bus line corresponding to the control unit, and one side connected to the branch conductor, and the other side connected to the main circuit connector on the power supply side of the control unit so as to grip the control unit. Main circuit engagement means for supplying power, and the main circuit load side of the control unit; A main circuit engagement means for load side connected to the outside of the control unit and outputting power distribution from the control unit to the outside, and a distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit. And the plurality of sets of power supply main circuit engaging means, load side main circuit engaging means, and distributor side control circuit connector corresponding to the number of control units installed at each stage. 2. The power supply main main circuit engagement means according to claim 1, wherein the power supply main main engagement means is a splitter side power grip tab which is inserted into and connected to the unit side power grip of the control unit, and the load side main circuit engagement means is inserted into the unit side load grip of the control unit. A power splitter characterized in that the splitter side load grip terminal block is gripped. A plurality of control units housed in a plurality of stages and arranged in a horizontal direction in each stage, a bus bar installed in a board board, and a plurality of control units housed in each stage between the bus bar and the control unit are provided. A control center having a power divider for supplying power to a unit, said power divider being a bus bar engaging means for grip connection with a bus bus, and a branch conductor connected to said bus bar engaging means for distributing power in a bus according to a control unit. And a power supply main circuit engaging means for supplying electric power from the bus bar to the control unit by connecting the grip side with the power supply main circuit connector of the control unit and the other side connected to the branch conductor, and the load side main circuit connector and grip of the control unit. Load side main circuit engaging means for connecting and outputting power distribution in a control unit to the outside; A distributor side control circuit connector connected to the unit side control circuit connector of the control unit and supplying a control signal to the control unit, wherein the power supply main circuit engaging means, the load side main circuit engaging means, and the distributor side control circuit connector are provided at each stage. A control center, in which a plurality of sets are provided corresponding to the number of installed control units.