JPH04236109A - Electric power distribution panel - Google Patents

Abstract

PURPOSE:To easily make wiring by providing the load terminals of a plurality of neutral switches and the-terminal section of a common earth near the load- side terminals of a plurality of circuit breakers. CONSTITUTION:Single-phase three-wire wiring is made by connecting a pair of power supply lines 1 and 1 and one neutral line 2 to the output terminal 27 of a main circuit breaker 6 on a main line 10. The power supply lines 1 and 2 are connected to the power supply-side terminals 16 of a plurality of circuit breakers 3 and a plurality of loads which are not shown in the figure are connected to the load-side terminals 17 of the breakers 3. Then a plurality of neutral switches 4 and a common earth terminal section 5 are provided near the terminals 17 of the breakers 3. As a result, the length of the lines connecting the common earth terminal section 5 with the master circuit breaker 6, each circuit breaker 3, and neutral switches 4 becomes nearly equal to each other. Therefore, the sheath of a three-core cable can be removed easily and the workability of the wiring work is improved.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a distribution board.

0002

[Prior Art] Conventional examples (for example, Utility Model Application No. 56-1206
No. 27) is shown in Figure 6. That is, this conventional example is a single-phase three-wire distribution board, and has a power line 70 and a neutral line 71.
and a power terminal 72 connected to the power line 70 and a load terminal 73 located away from the power line 70.
It has a plurality of circuit breakers 74 arranged in parallel to each other, and is connected to the neutral wire 71 and can be electrically opened/closed by operating an operating section. a plurality of neutral switches 75, load terminals 73 of the circuit breaker 74 and the neutral switch 7
A common ground terminal portion 77 is provided to which a ground wire 76 of a load 80 such as a computer is connected to the load terminal of No. 5. Note that 78 is a main circuit breaker, 79 is a power supply, and 81 is a three-core cable that connects the load 80 to the circuit breaker 74, neutral switch 75, and common ground terminal section 77.

0003

However, in this distribution board, the circuit breaker 74, neutral switch 75, and common ground terminal section 77 are separated, so the three-core cable 8
When the outer sheath of No. 1 is peeled off, the length of the core wires is different, which makes the peeling work complicated, and also makes it difficult to understand the correspondence between the terminals of the load 80 and the circuit breaker 74, etc., making the wiring complicated. Therefore, there is a drawback that wiring work becomes troublesome.

[0004] Accordingly, an object of the present invention is to provide a distribution board that can facilitate wiring work.

[0005]

[Means for Solving the Problems] A distribution board according to claim 1 has a power supply line, a neutral line, a power supply terminal connected to the power supply line, and a load terminal located away from the power supply line. A plurality of circuit breakers are arranged in parallel to each other, and a plurality of circuit breakers are connected to the neutral wire and are electrically opened and closed by operating an operating section. In a distribution board comprising a neutral switch and a common ground terminal section for connecting the load terminal of the circuit breaker and the ground wire of the load connected to the load terminal of the neutral switch, The present invention is characterized in that the load terminals and the common ground terminal portion of the plurality of neutral switches are disposed near the load terminal.

[0006] The distribution board according to claim 2 has the following features in claim 1:
The neutral switch and the common ground terminal portion are sequentially arranged in front of the load terminal of the circuit breaker, and the load terminal of the circuit breaker, the load terminal of the neutral switch, and the common ground terminal portion are arranged in a staircase manner. The heights are different to form a shape. In the distribution board according to claim 3, in claim 1, the neutral switch and the common ground terminal section are sequentially arranged in front of the load terminal of the circuit breaker, and The spacing between the neutral switch and the load terminal, and the spacing between the load terminal of the neutral switch and the common ground terminal portion are substantially equal.

[0007]

[Operation] According to the distribution board of claim 1, when the load terminal of the circuit breaker, the load terminal of the neutral switch, and the common ground terminal section are connected to a load, the load terminal and the common ground terminal of the neutral switch break the circuit. Since the connection wires are located near the load terminals of the device, the lengths of the connection wires are almost equal, making the work easier. When using a 3-core cable, it is easier to strip the cable, and the correspondence between the terminals is also improved. Since it is easy to attach, it is easy to connect the wires, and therefore the wiring work can be made easier.

According to a second aspect of the distribution board, in addition to the effects of the first aspect, the neutral switch and the common ground terminal portion are sequentially disposed in front of the load terminal of the circuit breaker, and The load terminals of the circuit breaker, the load terminals of the neutral switch, and the common ground terminal are arranged at different heights in a step-like manner, so that when connecting a connection wire to each, the other terminals do not get in the way. This makes wiring easier.

According to a third aspect of the distribution board, in addition to the effects of the first aspect, the neutral switch and the common ground terminal portion are sequentially disposed in front of the load terminal of the circuit breaker, and the Since the distance between the load terminal of the circuit breaker and the load terminal of the neutral switch and the distance between the load terminal of the neutral switch and the common ground terminal section are approximately equal, the circuit breaker and neutral switch for each load are approximately equal. Since the correspondence between the common earth terminal and the common ground terminal is clear, wiring is easy to connect, and since it is easy to confirm, incorrect wiring can be prevented.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained with reference to FIGS. 1 to 5. That is, this distribution board has a power supply line 1 and a neutral line 2, a plurality of circuit breakers 3, a plurality of neutral switches 4, and a common ground terminal section 5. The power line 1 and the neutral line 2 are connected to the load terminal 2 of the main circuit breaker 6.
The bar connected to 7 is taken as an example. That is, a support plate 9 is attached to a frame 8 installed in the lower box 7 with a fixture 28, and a main circuit breaker 6 is attached to this support plate 9. The main line 10 is connected to the power terminal 29 of the main circuit breaker 6. 11 is the fixed bar of the main line 10, 1
2 is the inner door, 13 is the outer door, 14 is the magnet for the inner door 12,
15 is a stopper for the inner door 12.

The plurality of circuit breakers 3 each have a power terminal 16 connected to the power line 1 and a load terminal 17 located away from the power line 1 to interrupt the circuit in response to an overload current. things and are placed side by side with each other. In this embodiment, a single-pole circuit breaker 3 among branch circuit breakers is used as an example, and a power terminal 16 and a load terminal 17 are separated into both ends and are arranged in parallel with each other in the vertical direction of the figure. It is installed on a support plate 29 attached to the frame 8 via. 18 is a three-phase circuit breaker among the branch circuit breakers, and 19 is a wiring duct for wiring the load line 20 therein.

The plurality of neutral switches 4 are connected to the neutral wire 2 and are electrically opened and closed by operating the operating section 21. This neutral switch 4 is arranged near the front of the load terminal 27 of the circuit breaker 3. That is,
A stepped portion 24 is formed at the upper end of the floating member 23 attached to the frame 8, and is attached to the upper side of the stepped portion 24 by a fixture 34 and arranged in parallel in the vertical direction of the figure. However, the whole is provided integrally with the case, and the height from the bottom part 26 of the lower box 7 of each load terminal 25 is the load terminal 1 of the circuit breaker 3.
The height from the bottom 26 of the lower box 7 of No. 7 is lower than that of the lower box 7, and the lower box 7 is positioned in a step-like manner. Further, the mutual spacing between the load terminals 25 of the plurality of neutral switches 4 is determined by the circuit breaker 3
The distance between the load terminals 17 is set to be equal to the distance between the load terminals 17 of .

The common ground terminal section 5 is connected to the load terminal 17 of the circuit breaker 3 and the load terminal 2 of the neutral switch 4.
The ground wire of the load (not shown) connected to the neutral switch 4 is connected by a three-core cable 31, and each terminal 30 is arranged vertically in the figure near the opposite side of the neutral switch 4 from the circuit breaker 3. It is set up. That is, the common ground terminal portion 5 is attached to the lower side of the stepped portion 24 of the floating member 23 using the fixture 33 so as to form a stepped shape with respect to the load terminal 25, and the mutual spacing between the terminals 30 is adjusted to interrupt the circuit. The distance between the load terminals 17 of the circuit breaker 3 is made equal to the mutual distance between the load terminals 17 of the circuit breaker 3, and the distance between the load terminals 25 and the terminals 30 of the neutral switch 4 is made approximately equal to the distance between the load terminals 17 of the circuit breaker 3 and the load terminals 25 of the neutral switch 4. There is.

[0014]

[Effects of the Invention] In the distribution board of claim 1, since the load terminal of the neutral switch and the common ground terminal are arranged near the load terminal of the circuit breaker, the lengths of the connecting wires are almost equal. It is easy to work, the peeling work when using a three-core cable is easy, and since the correspondence between the terminals is easy to establish, it is easy to connect the wires, and therefore the wiring work can be made easier.

[0015] In addition to the effects of claim 1, the distribution board of claim 2 further comprises: the neutral switch and the common ground terminal section are sequentially disposed in front of the load terminal of the circuit breaker; The load terminal of the power supply, the load terminal of the neutral switch, and the common ground terminal are arranged at different heights so as to form a stepped shape, so that other terminals do not get in the way when connecting connection wires to each. This makes wiring easier.

In addition to the effects of claim 1, the distribution board of claim 3 further comprises: the neutral switch and the common ground terminal portion are sequentially disposed in front of the load terminal of the circuit breaker; Since the spacing between the load terminal of the device and the load terminal of the neutral switch and the spacing between the load terminal of the neutral switch and the common ground terminal section are approximately equal, the circuit breaker for each load,
The correspondence between the neutral switch and the common ground terminal becomes clear, making it easier to connect and checking, which helps prevent incorrect connections.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

FIG. 2 is a front view of the door in an open state.

FIG. 3 is a perspective view thereof.

FIG. 4 is an exploded perspective view of internal components.

FIG. 5 is a perspective view showing a circuit breaker, a neutral switch, and a common ground terminal section.

FIG. 6 is an internal layout diagram of a conventional example.

[Explanation of symbols]

1 Power line 2 Neutral wire 3. Circuit breaker 4 Neutral switch 5 Common earth terminal section 16 Power terminal 17, 25 Load terminal 21　　　　Operation section

Claims (3)

[Claims] 1. A power supply line having a power supply line, a neutral line, a power supply terminal connected to the power supply line, and a load terminal located away from the power supply line, and interrupting the circuit in response to an overload current. A plurality of circuit breakers arranged in parallel with each other, a plurality of neutral switches connected to the neutral wire and electrically opened and closed by operation of an operation part, and the load terminals of the circuit breakers and In the distribution board, the plurality of neutral switches are arranged in the vicinity of the load terminals of the plurality of circuit breakers in the distribution board including a common ground terminal section for connecting the ground wires of the loads connected to the load terminals of the plurality of neutral switches. A distribution board characterized in that the load terminal and the common ground terminal section are arranged. 2. The neutral switch and the common ground terminal portion are sequentially arranged in front of the load terminal of the circuit breaker, and the load terminal of the circuit breaker, the load terminal of the neutral switch, and the common 2. The distribution board according to claim 1, wherein the ground terminal portions have different heights so as to form a stepped shape. 3. The neutral switch and the common ground terminal portion are sequentially arranged in front of the load terminal of the circuit breaker, and the load terminal of the circuit breaker and the load terminal of the neutral switch interval,
The distribution board according to claim 1, wherein the load terminal of the neutral switch and the common ground terminal portion are substantially equal in distance.