JPH04121314U - Low voltage side circuit equipment of distribution transformer equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To improve work efficiency and reduce the installation space when installing distribution transformer equipment. [Configuration] Low voltage terminals 2 of multiple different capacity V-connection transformers 1
After connecting in parallel for each phase, the three-phase low voltage switchgear 5 and the single-phase low voltage switchgear 6 are installed and connected, and the branch conductor 7, which can be branched into one circuit or multiple circuits, is connected to the three-phase low voltage switchgear 5. Installed on the load side of the single-phase low voltage switchgear 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a low voltage side circuit device for distribution transformer equipment.

0002

[Conventional technology]

An example of a low-voltage side circuit device of a conventional power distribution transformer facility will be explained based on FIG. 2. In FIG. 2, a conductor 3a is connected to the low voltage terminal 2 of each different capacity V-connection transformer 1. The conductors 3a are connected in parallel by a connecting conductor 4 for each phase. So Then, one connecting conductor 8a is connected to the connecting conductor 4 for each phase, and the connecting conductor 8a is connected to the connecting conductor 4 for each phase. The connecting conductor 8a is installed separately from the distribution transformer equipment by means of a low voltage cable 9. Three-phase low voltage with branch conductor 7 attached to the load side, housed in the distribution board 10 It is connected to the switchgear 5 via a conductor 3c. In addition, the u-phase and v-phase conductors 3c are A single-phase low voltage switchgear 6 with a branch conductor 7 attached to the load side via a connecting conductor 8b. is also connected. In addition, the N-phase connection conductor 8a is connected to the distribution board by a low voltage cable 9. It is connected to a branch conductor 7 installed in 10.

0003

[Problem that the idea aims to solve]

However, conventional distribution transformer equipment has both single-phase and three-phase low-voltage open circuits. Since the closing devices and branch conductors are not installed, the distribution transformer installation as described above is not possible. A distribution board must be installed separately from the equipment, and low-voltage cables must be routed to the distribution board. won. Therefore, a large amount of labor is required when installing distribution transformer equipment. However, the disadvantage was that it took a long time to work. In addition, it is necessary to set up as much as possible to install the distribution board. The storage space was getting bigger. Therefore, in this invention, when installing distribution transformer equipment, This is designed to improve work efficiency and reduce the installation space.

0004

[Means to solve the problem]

In this invention, after connecting the low voltage terminals of multiple V-connected transformers of different capacities in parallel for each phase, , install and connect single-phase and three-phase low voltage switchgear, and divide into one or multiple circuits. A branch conductor that can be branched is attached to each load side of the low voltage switchgear.

[0005]

[Effect]

According to this invention, there is no need to install a distribution board separately from the distribution transformer equipment. This eliminates the need to route low-voltage cables to the distribution board when installing distribution transformer equipment. In addition to reducing labor and work time, the installation space is also reduced by the size of the distribution board. can.

[0006]

【Example】

Figure 1 shows an example of the low-voltage side circuit device of the distribution transformer equipment of the present invention. A conductor 3a is connected to the low voltage terminal 2 of the different capacity V-connection transformer 1, and the conductor 3a is connected to each phase. are connected in parallel by a connecting conductor 4. The connecting conductor 4 between the u-phase and the v-phase is A three-phase low voltage switchgear 5 with a branch conductor 7 attached to the load side and a single The w-phase connecting conductor 4 is connected to the phase low-voltage switchgear 6 through the conductor 3b. , connected to the three-phase low voltage switchgear 5. In addition, the N-phase connecting conductor 4 includes a branch conductor. 7 is connected.

[0007]

[Effect of the idea]

According to the present invention, there are the following effects. (1) There is no need to install a distribution board separately from the distribution transformer equipment, so It is no longer necessary to connect voltage equipment and distribution boards with low-voltage cables, improving work efficiency. At the same time, the work time can be significantly reduced. (2) Installation of the entire distribution transformer equipment is no longer required, as installation space for the distribution board is no longer required. Space can be reduced.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an example of a low-voltage side circuit device of a distribution transformer facility according to the present invention.

FIG. 2 is a configuration diagram showing an example of a low-voltage side circuit device of a conventional distribution transformer facility.

[Explanation of symbols]

1 Different capacity V-connection transformer 2 Low voltage terminal 3a, 3b, 3c conductor 4 Connecting conductor 5 Three-phase low voltage switchgear 6 Single phase low voltage switchgear 7 Branch conductor 8a, 8b connection conductor 9 Low pressure cable

Claims (1)

[Scope of utility model registration request] Claim 1: In a distribution transformer facility for supplying single-phase and three-phase power by connecting the low-voltage terminals of a plurality of different capacity V-connection transformers in parallel for each phase, the low-voltage terminals are connected in parallel for each phase. After connection, single-phase and three-phase low-voltage switchgears are attached and connected, and a branch conductor capable of branching into one circuit or multiple circuits is attached to each load side of the low-voltage switchgear. Low voltage side circuit device of transformer equipment.