JP2815032B2 - Structure of power distribution board for switching system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel structure of a power distribution board for supplying power to a plurality of racks constituting an exchange system.

[0002]

2. Description of the Related Art Power supply to an exchange system is performed through a power supply panel once, taking safety and maintainability into consideration.
It is usually performed for each rack through a power distribution panel installed near a group of racks constituting the system. Since the power supply to the system must be performed while maintaining a predetermined voltage, the power line connecting the power supply panel and the power distribution panel is a cable made of thick copper wire to suppress the voltage drop within the standard. And a bus bar made of a copper plate (hereinafter abbreviated as a power cable) is used. Therefore, since bending these power cables requires a considerable work load, it is desirable to introduce the power to the power distribution panel while maintaining the straight line state without bending the power lines as much as possible.

In addition, recent switching systems use a lot of delicate electronic equipment, and therefore need to be protected from failures caused by electrical noise generated around power cables. In addition, the power cable shall be concealed inside the distribution panel so that there is no danger of the operator touching the power cable when opening the door of the power distribution panel and accessing the internal equipment for maintenance. Is also necessary.

[0004]

SUMMARY OF THE INVENTION The present invention provides a structure of a power distribution board for an exchange system which satisfies such demands and can easily rearrange the internal equipment according to the conditions of the installation place. The purpose is to provide.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power distribution terminal for drawing in a power cable from the outside, a power distribution terminal for returning, and a power distribution for distributing power to each frame constituting a switching system. A power distribution panel having a frame structure, which is provided upright on the floor and includes a unit, a return distribution unit, and the like, wherein each of the units is unitized so as to be recombinable, replaceable, and expandable. The power cable and each unit of the power receiving terminal portion and the return power receiving terminal portion directly connected thereto are arranged on the back side of the frame, and other units not directly related to the power cable are arranged on the front side thereof. The power receiving terminal unit and the power cable are arranged and concealed, and each unit of the power receiving terminal unit is concentrated near the upper end or lower end of the frame. Is achieved by the structure of the exchange system for power distribution panel, characterized and.

[0006]

The power cable is straightly and straightly introduced into the power distribution panel from the upper or lower end of the frame without being bent, and is connected to each of the power receiving terminal units disposed there. On the front side of the power receiving terminal unit, a unit such as a power distribution unit that is not directly connected to an external power cable is arranged to conceal the power cable and the power receiving terminal unit. Therefore, even if an operator opens the doors of the frame and accesses them for maintenance and inspection, accidental direct contact with the power cables is prevented. Further, noise generated around the power supply cable is also shielded by the panel of the unit arranged on the front face, thereby preventing leakage to the outside.

Further, by unitizing each part,
The power distribution panel can be easily rearranged or expanded according to the situation. Hereinafter, the present invention will be described in more detail based on preferred embodiments shown in the drawings.

[0008]

FIG. 1 is a perspective view showing an example of the configuration of a power distribution board according to the present invention, in which a power cable is introduced from above a frame. Inside the frame 1 composed of a pair of columns before and after standing on the floor, from the upper part to the lower part, an alarm lamp unit 2, an alarm panel unit 3, a return power receiving terminal unit 4, a power receiving terminal unit 5, , The frame / signal ground unit 6, the power distribution units 7 and 7 'of the 1 system, the power distribution units 8 and 8' of the 0 system, the return distribution unit 9 of the 1 system, and the return distribution unit 10 of the 0 system are arranged in an orderly manner. I have.

In this example, as shown in FIG. 2, an external power cable A extending from a power supply board (not shown)
Consists of two systems, system 0 and system 1, are vertically introduced into the frame 1 from above and connected to the power receiving terminal unit 5 arranged there, while returning to the power supply panel. Similarly, the power cable B on the return side includes the system 0 and the system 1 and is connected to the return power receiving terminal unit 4.

The external power supplies thus introduced are separately supplied from the separate 0-system and 1-system terminals in the power receiving terminal unit 5 to the 0-system power distribution units 8, 8 'and the 1-system power distribution units 7, 7'. Connected. On the other hand, the return-side power supply is also separately connected to the 0-system and 1-system return distribution units 9 and 10 from separate 0-system and 1-system terminals in the return power receiving terminal unit.

Thereafter, the power supply is applied to these distribution units 7 to
Through 10, it is connected to a power supply unit of each rack constituting the switching system. The alarm lamp unit 2 and the alarm panel unit 3 are connected to the power receiving terminal units 4 and 5.
It also detects the operating status of the breakers or fuses of the distribution units 7 to 10 and the operating status of the power supply units of each frame constituting the exchange system, and displays when an abnormality is found. The grounding unit performs necessary grounding to remove noise generated inside the power distribution panel.

One of the features of the power distribution board of the present invention thus constructed is that the power receiving terminal unit 5 for receiving the external power cable and the return power receiving terminal unit 4 are connected to the end region of the frame 1 (the upper end in this example). Side), so that the power cable can be introduced straight and vertically into the frame 1 without bending. As described above, since the power cable is made of a thick copper wire or copper plate and has high rigidity, this linear structure has an effect of facilitating the cable introduction work.

Another feature is that the power receiving terminal units 4 and 5 are arranged inside the frame 1. The power cables A and B to be introduced together with the power receiving terminal units 4 and 5 are connected to the frame 1. It can be installed inside, and the frame front side can be concealed by other units. As a result, even if a worker opens the door of the frame 1 during maintenance and inspection, these power receiving terminals and power cables are not exposed to the front, and electric shock accidents and the like can be prevented.

FIG. 3 shows an example in which such a power distribution board of the present invention is installed at the ends of a plurality of racks 12 constituting an exchange system. In the above example, the power cable is introduced from above the frame, but the power distribution panel of the present invention may be configured as a downward introduction type. An example is shown in FIG. The power cable rises vertically through the double access floor and is connected to the power receiving terminal unit 5 and the return power receiving terminal unit 4 installed at the lower part of the frame.

Another feature of the present invention is that a power receiving unit,
Each unit such as a distribution unit, a ground unit, and an alarm display unit is unitized, and a power receiving terminal unit and a power distribution unit that can be independently attached and detached are provided. Thus, operations such as rearrangement and extension can be performed quickly and easily. FIG. 5 shows a configuration of a power receiving unit and FIG. 6 shows a configuration of a power distribution unit as an example of these united devices.

[0016]

As described in detail above, according to the present invention,
The power cable is linearly and vertically introduced into the power distribution panel from the upper or lower end of the frame, and is connected to each of the power receiving terminal units arranged therein, so that the cable connection operation can be greatly simplified. In addition, a unit with low risk of electric shock etc. is arranged on the front side of the power receiving terminal unit, concealing the power cable and the power receiving terminal unit, so that operators may accidentally touch the power supply directly during maintenance and inspection. Is prevented. Further, this shields noise generated around the power cable and prevents leakage to the outside.

Furthermore, by unitizing each part,
The power distribution panel can be easily rearranged or expanded according to the situation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the configuration of a power distribution board of the present invention.

FIG. 2 is a schematic side view showing the arrangement of each unit of the power distribution panel of FIG. 1;

FIG. 3 is a perspective view of the power distribution panel of FIG. 1 connected to an exchange system.

FIG. 4 is a perspective view showing another example of the power distribution board of the present invention.

FIG. 5 is an exploded perspective view showing a configuration of a power receiving terminal unit.

FIG. 6 is an exploded perspective view showing a configuration of a power distribution unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Alarm lamp unit 3 ... Alarm panel unit 4 ... Return power receiving terminal unit 5 ... Power receiving terminal unit 6 ... Frame / signal earth unit 7, 7 '... 1 system power distribution unit 8, 8' ... 0 system power Distribution unit 9 ... 1 system return distribution unit 10 ... 0 system return distribution unit 12 ... Frame of exchange system A ... 0, 1 system power cable B ... 0, 1 system power (return) cable

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04Q 1/00-1/16 H04Q 1/28

Claims (1)

(57) [Claims] 1. A power receiving terminal (5) for returning a power cable (A, B) from the outside, a return power receiving terminal (4), and a power supply for distributing power to each frame constituting the switching system. Power distribution unit (7, 7 '; 8, 8'), return distribution unit (9, 10), etc., and a frame structure (1) which is installed upright on the floor. The respective units are unitized so that they can be rearranged, replaced, and expanded, and the power cables (A,
B) and each unit (4, 5) of the power receiving terminal portion and the return power receiving terminal portion directly connected thereto are disposed on the back side of the frame (1), and the power cable is provided on the front side thereof. Other units (7 to 10) that are not directly related are arranged to conceal the units (4, 5) of the power receiving terminal units and the power cables (A, B), and to conceal the units (7 to 10) of the power receiving terminal units. (4) and (5) are structures of a power distribution board for an exchange system, which are arranged near the upper end or lower end of the frame (1).