Single-phase box type transformer

A technology for transformers and single-phase boxes, applied in the direction of transformers, fixed transformers, transformer/inductor components, etc., can solve the problems of inapplicability, self and power supply line protection limitations, etc., to achieve convenient conversion, improve power supply quality and structure compact effect

Pending Publication Date: 2017-02-01
吉安伊戈尔电气有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the protection of this type of column-mounted single-phase transformer to itself and the power supply line, and it is not suitable for use in more and more underground cross-linked cable systems in urban distribution networks

Method used

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  • Single-phase box type transformer
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Embodiment Construction

[0011] Such as Figure 1 to Figure 2 Shown is a preferred specific implementation example of the present invention, a single-phase box-type transformer, including a box body 10, a transformer 20, a backup protection fuse 30 for short-circuit protection of the transformer 20, and a backup fuse 30 for transformer overload protection. Plug-in and pull fuse 40, single-phase ring network load switch 50 for terminal power supply and ring network power supply conversion, two sets of single-pass bushings 60 for high-voltage wiring of transformers, and three sets of bushings for transformers and low-voltage wiring Low-voltage bushing 70, wherein, the transformer 20 is connected in series with the plug-in fuse 40 through the high-voltage tap changer 21, the plug-in fuse 40 is connected in series with the backup protection fuse 30, and the backup protection fuse 30 is connected in series with the backup protection fuse 30. The single-phase ring network load switch 50 is connected in seri...

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PUM

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Abstract

The invention provides a single-phase box type transformer. The single-phase box type transformer comprises a box body, a transformer, a backup protection fuse used for transformer short-circuit protection, a plugging and unplugging fuse used for transformer overload protection, a single-phase looped network load switch used for conversion of terminal power supply and looped network power supply, two groups of single-way bushings used for transformer high-voltage wire connection and three groups of low-voltage bushings used for transformer low-voltage wire connection. The transformer is connected in series with the plugging and unplugging fuse through a high-voltage tapping switch; the plugging and unplugging fuse is connected in series with the backup protection fuse; the backup protection fuse is connected in series with the single-phase looped network load switch; and the single-phase looped network load switch is respectively connected with the two groups of single-way bushings. Compared with a pole-mounting type single-phase transformer, the single-phase box type transformer enhances self-protection of a power supply circuit and the transformer and further improves the power supply quality. The single-phase box type transformer can be used for terminal power supply and looped network power supply, is very convenient in conversion, and guarantees reliability and flexibility of power supply.

Description

technical field [0001] The invention relates to a single-phase box-type transformer. Background technique [0002] A large number of scattered residential buildings, streets, roads, bridges and other power loads in foreign regions such as South and North America have the characteristics of small capacity. In order to reduce low-voltage power loss and voltage loss by being close to the load center, in such distributed power distribution In the network, a large number of small-capacity single-phase oil-immersed distribution transformers with certain self-protection functions are usually installed on the pole (the transformer capacity is generally 167kVA and below, and the voltage level is 20kV and below). However, due to the limitation of the protection of this type of pole-mounted single-phase transformer to itself and the power supply line, in addition, it is not suitable for use in more and more underground cross-linked cable systems in urban distribution networks. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/40H01F27/06H01F30/10
CPCH01F27/06H01F27/402H01F30/10
Inventor 肖俊承王一龙郑红炎王路阳
Owner 吉安伊戈尔电气有限公司
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