JPH0140257Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a double-sided control center in which plug-in type control units are stacked and housed in multiple stages.

Usually, most control centers are double-sided with control units housed in the front and back, and have a vertical bus bar section in the center where a 3-phase vertical bus bar for distributing power to each control unit is installed. There are two unit compartments sandwiched in front and in front of each other in which control units are housed in multiple stacks, and a vertical wire compartment is provided adjacent to the side of the unit compartment. Further, a horizontal busbar section and a cable processing section are provided at the upper and lower parts of the box forming each section, respectively.

Conventionally, when applying the above control center to a 3-phase 4-wire power distribution system, a neutral bus bar is installed in the vertical wire section, and the wires that are screwed to the neutral bus bar are drawn into the control unit. They formed an electrical circuit including a neutral wire.

The above-mentioned conventional device had a problem in that the cable storage space in the vertical wire section was narrow due to the arrangement of the neutral bus bar.

Furthermore, since the neutral bus bar is connected to electric wires to each control unit, it has been difficult to adequately clean and maintain the neutral bus bar.

Furthermore, when pulling out the control unit, it is necessary to remove the neutral wire, and when replacing the control unit, it is also necessary to change the wiring of the neutral wire, which detracts from the features of the plug-in type control unit. Ta.

This invention attempts to eliminate the drawbacks of the conventional ones by allowing plug-in connection to a neutral bus.

An embodiment of this invention will be described below with reference to FIGS. 1 to 3.

In the figure, reference numeral 100 denotes a control center box, which is generally arranged in large numbers in rows. 101 is a unit compartment in which typical control units 201 and the like are stored in multiple stacks; 102 is a vertical wire compartment;
A: That door. 103 is a horizontal busbar section, 104
is the cable handling section.

The control center box 100 has wall plates 1 at the four corners.
are arranged, and the front and rear unit compartments 101
An intermediate support 2 is disposed between the vertical wire section 102 and the vertical wire section 102 . They are connected by horizontal frames 4 at the upper and lower ends. Reference numeral 3 designates a pair of support plates extending from the wall plate 1 so that the vertical wire section 102 has a depth that reaches the back surface of the unit section on the opposite side. This support plate 3 partitions the side surface of the vertical bus bar section 105 and the vertical wire section 102.

The unit compartment 101 is divided by a partition plate 5 into unit chambers in which respective control units shown as a typical control unit 201 are housed, and at the back of the unit chamber there is a back plate 6 for each unit chamber.
is provided, thereby partitioning each unit chamber from the front or rear surface of the vertical bus bar section 105.

Reference numeral 7 denotes a partition plate disposed within the vertical wire section 102 at a position approximately at the same depth as the adjacent unit section 101 so as to divide the depth of the vertical wire section 102 into two.

The partition plate 7 is attached to the wall plate 1 so as to be removable as necessary. That is, when the vertical neutral bus 11 is not required, the partition plate 7 can also be removed and that portion can be used as a vertical wire section.

Reference numeral 10 is a three-phase Z-shaped vertical generatrix having a front leg 10B and a rear leg 10C extending in opposite directions from both ends of an intermediate portion 10A parallel to the back plate 6, and having a depth that allows plug-in connection of a control unit from the front and back. have. Reference numeral 11 denotes vertical neutral busbars having a rectangular cross section, two of which are disposed on the left and right sides of the three-phase vertical busbar 10, to which front and rear control units are separately plug-in connected.

12 is a pair of insulating stands that support the three-phase vertical bus bar 10, and 13 is an insulating stand that supports the vertical neutral bus bar 11. The insulating stand 12 is attached to the support plate 3 by a support fitting 14, and the insulating stand 13 is attached directly to the support plate 3.

Further, as shown in FIG. 3, the back plate 6 is provided with four openings 6A at the top, and the support plate 3 is provided with a connector through hole 3A that coincides with the opening 6A at the left end. . The front leg 10B or rear leg 10C of the three-phase vertical generatrix 10 is passed through the opening 6A.
The vertical neutral bus 11 can be seen through the opening 6A and the connector through hole 3A. Above opening 6
A protrusion housing of a connector of a control unit, which will be described later, is inserted from A and 3A, and the plug-in connection is established.

Here, the configuration of a typical control unit 201 will be explained. The above unit case is composed of only left and right side plates 30. Reference numeral 31 denotes a front horizontal member on which a latch device (not shown) is disposed, and is also used as a drawer handle. 32 is a rear transverse member on which connectors 39 and 40 are disposed. 33 is a mounting plate to which a wiring sheath breaker 35, an electromagnetic switch 36, etc. are attached. 38 is an operation handle device for operating the wiring sheath disconnector 35 from the outside of the door 201A. Both ends of the partition plate 5 extend downward to form J-shaped guide rails 5A (Fig. 3).
A mounting rail 34 provided on the outer surface of the side plate 30 is slidably fitted into this. Plug-in connectors 39 and 40 are for 3 poles (3 phases), respectively.
A U-shaped contact 41 is built in each of the projection housings 39A and 40A, and is connected to a wiring sheath disconnector 35 via a lead wire 42. However, when a three-pole wire disconnector 35 is used, the neutral phase connector 40 is connected to a neutral link or a terminal block.

According to this invention configured as described above, the depth of the vertical wire section 102 is deeper than the depth of the adjacent unit section and reaches the back of the unit section on the opposite side, and the control unit on the opposite side is installed at the rear thereof. Since the vertical neutral bus 11 is provided with a plug-in connection, in addition to the plug-in connection with the conventional 3-phase vertical bus, a 3-phase 4-wire draw-out type is provided for easy maintenance, inspection, and unit replacement. A control unit is obtained.

In addition, the part where the vertical neutral bus bar 11 is arranged forms a vertical neutral bus section separated from other sections by the bulkhead plate 7 and the support plate 3, so it is safe and the vertical electric wire section cables are not allowed to be pulled in.

Furthermore, when a vertical neutral bus is not provided, the partition plate 7 can be removed to enlarge the vertical wire section. This is effective in providing a control center suitable for a three-phase, three-wire system with a large number of interlock wirings in the control circuit.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the control center according to this invention, Fig. 2 is a partial horizontal sectional view of Fig. 1, and Fig. 3 is a front view showing the state in which the control unit of the unit room in Fig. 2 is pulled out. be. In addition, the same reference numerals in the figures indicate the same parts, 7 is a partition plate, 10 is a 3-phase vertical busbar, 11 is a vertical neutral busbar, 39 is a 3-phase connector, 40 is a neutral phase connector, and 102 is a vertical electric wire. Section 105 is a vertical busbar section.

Claims (1)

[Scope of utility model registration request] A vertical busbar section in which a three-phase vertical busbar is arranged in the center of the box, unit sections arranged before and after this vertical busbar section, and vertical electric wire sections arranged on each side of this unit section. The depth of the vertical wire section is formed to a depth that reaches the back of the unit section on the opposite side of each side, and a connector through hole is formed in the rear wall of the vertical wire section, and A vertical neutral busbar is disposed in the vertical conductor section, and a bulkhead plate is removably provided between the rear part and the front part of the vertical electric wire section, so that when the vertical neutral busbar is disposed, In this case, a bulkhead plate is installed to separate the vertical conductor section at the front and the vertical neutral bus section at the rear, and when the vertical neutral bus is not installed, the bulkhead plate is removed and the front and rear sections are separated. A control unit can be selectively used so as to form a continuous vertical wire section, and the control unit is equipped with a plurality of connectors on the back side that are plug-in connected to the three-phase vertical busbar and the vertical neutral busbar, respectively, to the front and rear units. A double-sided control center that is housed in multiple stacks within a compartment.