KR200387633Y1 - A Movable Terminal Plate Of Automatic Transfer Switch - Google Patents

Abstract

The present invention relates to a movable terminal of a power transfer switch, and more particularly, to a movable terminal to switch power between the stationary terminal of the commercial power source and the stationary terminal of the emergency power supply by a main rotary shaft or other driving means.

The present invention as described above is provided with an electricity supply unit having a fixed terminal, a movable terminal and the main rotary shaft, and a switching device connected to the movable terminal to switch the commercial power (A power) and emergency power (B power). In the power supply switchgear consisting of a control unit, Body portion; A power contactor and B power contactor which are respectively pinned to the lower portion of the body portion; An elastic member coupled between the body portion and the A and B power contactors; A movable terminal support having a screw and a pin coupled to the body portion, and a shaft insertion hole having a square at a lower end thereof; A power connection line contacted / connected to the A and B power contacts; And a load side fixing terminal screwed to the power connection line.

According to the present invention configured as described above, the power contactor coupled to the movable terminal of the power transfer switch is separated into the A power side contactor and the B power side contactor, so that only the contactor that is damaged at the time of damage / wearing of the partial contactor is removed / replaced. It becomes possible.

Description

Movable Terminal Plate Of Automatic Transfer Switch

The present invention relates to a movable terminal of a power transfer switch, and more particularly, to a movable terminal to switch power between the stationary terminal of the commercial power source and the stationary terminal of the emergency power supply by a main rotary shaft or other driving means.

In general, the automatic power transfer switch is commercial power (hereinafter referred to as 'A power') as the power supplied from KEPCO, and power supplied by the power consumer is called emergency (preliminary) power (hereinafter referred to as 'B power'). When switching from A power source to B power source or B power source to A power source.

The switching of power is to change the power source supplied to the electric equipment. For example, when power is supplied from A power and A power is out of order, the power supply is switched to run the self-generation equipment and receive B power. .

At this time, there may be a method of operating a power generation facility by a diesel engine (generator type) separately, or a method of using a reserve power source that is always on standby by forming a transmission line separately (battery type). .

Typically, such a power transfer switch has an emergency power source such as a large-capacity rechargeable battery or a self-generated generator in order to minimize such damage in an institution that is heavily damaged by a power failure such as a hospital, factory, research institute, or broadcasting station. It is used to switch the power and emergency power.

In the accompanying drawings, Figure 1 is a perspective view of a conventional power supply switchgear, Figure 2 is a cross-sectional view showing the operating terminal of the current-carrying part of the conventional power supply switchgear, as shown in the figure, the power supply switchgear to the operation portion and the power supply portion In the configuration of the energizing unit, a switch is made between the fixed terminal 10 which is an input terminal supplied with commercial power and emergency power, and the commercial power side fixed terminal 10a and the emergency power side fixed terminal 10b. It consists of the terminal 20 and the main rotary shaft (drive shaft) 11 connected with the operation part 30 for driving this movable terminal 20.

In general, the movable terminal 20 is composed of a power contactor 21 which is in contact with the fixed terminal 10, a power connection line 22, and a load side stator 23.

Here, it was common that the A power side contactor 21a and the B power side contactor 21b constituting the movable terminal 20 are integrally connected.

However, when the power contactor of the movable terminal is formed integrally, the entire movable terminal must be replaced or repaired when any one of the A power supply side or the B power supply contactor is worn or damaged during use. There was a problem that the cost increases.

The present invention for solving the above problems is that the power contactor of the integrally formed movable terminal is separated into the A power contactor and the B power contactor, so that only the damaged contactor can be separated / replaced at the time of damage / wear of the partial contactor. The purpose is to provide a movable terminal of the switch.

In addition, the present invention is an operation unit provided with a power supply unit having a fixed terminal, a movable terminal and the main rotary shaft, and a switching device connected to the movable terminal to switch commercial power (A power) and emergency power (B power). In the power transfer switch made of a, Body portion; A power contactor and B power contactor which are respectively pinned to the lower portion of the body portion; An elastic member coupled between the body portion and the A and B power contactors; A movable terminal support having a screw and a pin coupled to the body, a central shaft insertion hole formed at a lower end thereof, and a bolt formed at the lower end thereof; A power connection line contacted / connected to the A and B power contacts; And a load side fixing terminal screwed to the power connection line.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Of the accompanying drawings, Figure 3 is a perspective view showing a movable terminal of the power supply of the power switching switch according to an embodiment of the present invention, Figure 4 is a front view of FIG.

First, the general operation principle and configuration of the power transfer switch is the same as in the prior art, the description thereof will be omitted, but will be described with respect to the operating terminal constituting the current-carrying part of the power transfer switch.

As shown in the figure, the movable terminal 100 of the power transfer switch according to the present invention is the body portion 110 and the A power contactor 120 coupled to the pins 111 and 111a at the bottom of the body portion 110, respectively. And B power contactor (120a), the elastic member 130 is coupled between the body portion 110 and the A, B power contactors (120, 120a), respectively, and the screw 141 is coupled to the body portion (110) And a rectangular shaft insertion hole 142 is formed at the center of the lower end, and a movable terminal support 140 having a bolt part 143 formed at the lower end thereof, and a power connection line contacting / connecting to the A and B power contactors 120 and 120a. 150, and a load side fixing terminal 160 coupled to the power connection line 150 and the screw 161.

The movable terminal 100 is moved with the A power side fixed terminal (see Fig. 1, 10a) and the B power side fixed terminal (see Fig. 1, 10b) to which power is supplied according to the driving of the rotating shaft (see Figs. 1 and 11). Switch the power while you lose.

The movable terminal portion mainly in contact with the fixed terminal (see Fig. 1, 10) is the power contactor 120,120a of the movable terminal, and the power contactor 120,120a is the A power contactor 120 and the B power contactor 120a. Separated into each other is coupled to the body portion (110).

Accordingly, when any one of the power contactors 120 and 120a of the A power contactor 120 or the B power contactor 120a is worn or damaged during use, replacement / repair for this is inevitable. As described above, Since the power contactors 120 and 120a are separated / coupled to the body 110, respectively, there is an advantage that only one power contactor can be replaced when necessary.

The movable terminal of the conventional power switch was coupled to a power contactor in which the A and B power contactors were integrally formed in the body part.

The A and B power contactors 120 and 120a are coupled to the body parts 110 and pins 111 and 111a, respectively, and an elastic member 130 is inserted between the body part 110 and the power contactors 120 and 120a. Therefore, it is possible to rotate elastically around the pin 111.

The movable terminal supporter 140 is coupled to the body portion 110, the screw 141, the lower end of the bolt portion 143 is formed and the lower end of the central shaft insertion hole 142 is formed in the main rotating shaft (Fig. 1, 11 is coupled, the switching of the movable terminal 100 in accordance with the rotation of the main rotary shaft (see Fig. 1, 11).

On the other hand, the current flowing through the power contact (120, 120a) flows through the power connection line 150, and again supplies the necessary power through the load side fixing terminal 160 coupled to the end of the power connection line 150 screw (161) Will be supplied.

According to the present invention described above, the power contactor coupled to the movable terminal of the power transfer switch is separated into the A power supply contactor and the B power supply contactor, so that only the contactor that is damaged at the time of damage / wearing of any one part contactor can be removed / replaced. Done.

1 is a perspective view showing a conventional power transfer switch;

Figure 2 is a cross-sectional view showing a movable terminal of the power supply of the conventional power switch.

Figure 3 is a perspective view showing a movable terminal of the power supply of the power transfer switch according to a temporary embodiment of the present invention;

4 is a front view of FIG. 3.

※ Explanation of symbols for main parts of drawing

100: movable terminal (100) 110: body portion

111, 111a: Pin 120, 120a: A, B power contactor

130: elastic member 140: movable terminal support

141: screw 142: shaft insertion hole

143: bolt 150: power connection wire

160: load side fixing terminal 161: screw

Claims (1)

Power supply switchgear consisting of an operating part equipped with a fixed terminal, a movable terminal and a main rotary shaft, and a switching device connected to the movable terminal for switching commercial power (A power) and emergency power (B power). To Body 110; An A power contactor 120 and a B power contactor 120a which are respectively pinned to the lower portion of the body portion; An elastic member 130 coupled between the body portion and the A and B power contactors; A screw terminal coupled to the body portion, a shaft insertion hole 142 having a square at a lower end thereof, and a movable terminal support 140 having a bolt portion at a lower end thereof; A power connection line 150 contacted / connected to the A and B power contacts; And Movable terminal (100) of the power transfer switch including a load side fixed terminal 160 is screwed with the power connection line (150).