CN205789467U - Self-protecting Three-Phase Distribution Transformers - Google Patents
Self-protecting Three-Phase Distribution Transformers Download PDFInfo
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- CN205789467U CN205789467U CN201620493739.5U CN201620493739U CN205789467U CN 205789467 U CN205789467 U CN 205789467U CN 201620493739 U CN201620493739 U CN 201620493739U CN 205789467 U CN205789467 U CN 205789467U
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Abstract
本实用新型涉及变压器技术领域，特别公开了一种自保护型三相配电变压器。该自保护型三相配电变压器，包括三相配电变压器，其特征在于：所述变压器内部高压线圈首端与高压套管引出线之间安装有高压油浸式熔丝，变压器内部低压线圈首端与低压套管引出线之间安装有低压油浸式断路器，变压器外侧安装有连接低压油浸式断路器的外部操作手柄和过载报警指示灯。本实用新型将配电变压器的主要保护紧凑的安装在变压器油箱的内外部，节省了大龄的安装金具和空间，使供电线路中配电变压器的安装和保护更加简单、安全可靠。
The utility model relates to the technical field of transformers, and in particular discloses a self-protection type three-phase power distribution transformer. The self-protected three-phase distribution transformer includes a three-phase distribution transformer, which is characterized in that a high-voltage oil-immersed fuse is installed between the head end of the high-voltage coil inside the transformer and the lead-out line of the high-voltage bushing, and a low-voltage coil inside the transformer A low-voltage oil-immersed circuit breaker is installed between the head end and the lead-out line of the low-voltage bushing, and an external operating handle connected to the low-voltage oil-immersed circuit breaker and an overload alarm indicator light are installed outside the transformer. The utility model compactly installs the main protection of the distribution transformer on the inside and outside of the transformer oil tank, saves old installation hardware and space, and makes the installation and protection of the distribution transformer in the power supply line simpler, safer and more reliable.
Description
（一）技术领域(1) Technical field
本实用新型涉及变压器技术领域，特别涉及一种自保护型三相配电变压器。The utility model relates to the technical field of transformers, in particular to a self-protection type three-phase power distribution transformer.
（二）背景技术(2) Background technology
现阶段，供电系统中的配电变压器与其高低压侧保护都是独立布置，配电变压器的高压侧线路中一般都装有高压熔断器和避雷器，低压侧出线装有配电箱，配电箱中安装低压断路器等保护装置。这样做存在如下缺点：一是安装需要大量的金具和安装空间，低压侧配电箱也需要占用较大的安装空间；二是安装工作量大，连接复杂且耗时；三是整体采购及安装成本高，不经济。At this stage, the distribution transformer in the power supply system and its high and low voltage side protection are arranged independently. The high voltage side line of the distribution transformer is generally equipped with a high voltage fuse and lightning arrester, and the low voltage side outlet is equipped with a distribution box. Install protection devices such as low-voltage circuit breakers. This has the following disadvantages: first, the installation requires a lot of hardware and installation space, and the low-voltage side distribution box also needs to occupy a large installation space; second, the installation workload is large, and the connection is complicated and time-consuming; third, the overall purchase and installation The cost is high and uneconomical.
（三）发明内容(3) Contents of the invention
本实用新型为了弥补现有技术的不足，提供了一种结构简单紧凑、安装方便、安全可靠性高的自保护型三相配电变压器。In order to make up for the deficiencies of the prior art, the utility model provides a self-protection type three-phase distribution transformer with simple and compact structure, convenient installation and high safety and reliability.
本实用新型是通过如下技术方案实现的：The utility model is achieved through the following technical solutions:
一种自保护型三相配电变压器，包括三相配电变压器，其特征在于：所述变压器内部高压线圈首端与高压套管引出线之间安装有高压油浸式熔丝，变压器内部低压线圈首端与低压套管引出线之间安装有低压油浸式断路器，变压器外侧安装有连接低压油浸式断路器的外部操作手柄和过载报警指示灯。A self-protected three-phase distribution transformer, including a three-phase distribution transformer, characterized in that: a high-voltage oil-immersed fuse is installed between the head end of the high-voltage coil inside the transformer and the lead-out line of the high-voltage bushing, and the low-voltage inside the transformer A low-voltage oil-immersed circuit breaker is installed between the head end of the coil and the lead-out line of the low-voltage bushing, and an external operating handle connected to the low-voltage oil-immersed circuit breaker and an overload alarm indicator light are installed outside the transformer.
本实用新型在三相配电变压器的高压侧配置了高压熔丝，低压侧配置了油浸式低压断路器，这些具有保护功能的组件和变压器组成一个整体，可以对变压器及其供电线路形成自动保护，提高供电质量。The utility model is equipped with a high-voltage fuse on the high-voltage side of the three-phase distribution transformer, and an oil-immersed low-voltage circuit breaker on the low-voltage side. protection and improve the quality of power supply.
本实用新型的更优技术方案为：The more optimal technical scheme of the utility model is:
所述变压器外侧顶部安装有紧邻变压器高压套管的金属氧化物避雷器，连接方便，且能就近保护变压器。A metal oxide lightning arrester adjacent to the high-voltage bushing of the transformer is installed on the outer top of the transformer, which is convenient for connection and can protect the transformer nearby.
本实用新型将配电变压器的主要保护紧凑的安装在变压器油箱的内外部，节省了大龄的安装金具和空间，使供电线路中配电变压器的安装和保护更加简单、安全可靠，同时也降低了工程采购和安装的整体成本，主要适用于供电系统的配电网络。The utility model compactly installs the main protection of the distribution transformer on the inside and outside of the transformer oil tank, saves the old installation fittings and space, makes the installation and protection of the distribution transformer in the power supply line simpler, safer and more reliable, and also reduces the The overall cost of engineering procurement and installation, mainly applicable to the distribution network of the power supply system.
（四）附图说明(4) Description of drawings
下面结合附图对本实用新型作进一步的说明。Below in conjunction with accompanying drawing, the utility model is further described.
图1为本实用新型的结构示意图；Fig. 1 is the structural representation of the utility model;
图2为常规三相配电变压器的安装结构示意图。Figure 2 is a schematic diagram of the installation structure of a conventional three-phase distribution transformer.
图中，1金属氧化物避雷器，2变压器，3过载报警指示灯，4外部操作手柄，5高压油浸式熔丝，6低压油浸式断路器，7高压熔断器，8常规避雷器，9低压配电箱。In the figure, 1 metal oxide arrester, 2 transformer, 3 overload alarm indicator, 4 external operating handle, 5 high-voltage oil-immersed fuse, 6 low-voltage oil-immersed circuit breaker, 7 high-voltage fuse, 8 conventional arrester, 9 low-voltage distribution box.
（五）具体实施方式(5) Specific implementation methods
附图为本实用新型的一种具体实施例。该实施例包括三相配电变压器2，所述变压器2内部高压线圈首端与高压套管引出线之间安装有高压油浸式熔丝5，变压器2内部低压线圈首端与低压套管引出线之间安装有低压油浸式断路器6，变压器2外侧安装有连接低压油浸式断路器6的外部操作手柄4和过载报警指示灯3；所述变压器2外侧顶部安装有紧邻变压器2高压套管的金属氧化物避雷器1。Accompanying drawing is a kind of concrete embodiment of the utility model. This embodiment includes a three-phase distribution transformer 2. A high-voltage oil-immersed fuse 5 is installed between the head end of the high-voltage coil inside the transformer 2 and the lead-out wire of the high-voltage bushing. A low-voltage oil-immersed circuit breaker 6 is installed between the lines, and an external operating handle 4 connected to the low-voltage oil-immersed circuit breaker 6 and an overload alarm indicator 3 are installed on the outside of the transformer 2; Bushing metal oxide arrester1.
本实用新型的过电压保护采用最先进的金属氧化物避雷器1，且直接安装在变压器2的箱盖外侧，与变压器2高压套管紧邻，联接方便且能就近保护变压器2。安装在变压器2内部高压线圈首端与高压套管引出线之间的高压油浸式熔丝5在变压器2高压侧发生故障时，能将变压器从供电线路上切除下来。过流及二次短路的保护由安装在变压器2内部低压线圈首端与低压套管引出线之间的低压油浸式断路器6完成。低压油浸式断路器6带有外部操作手柄4和过载报警指示灯3，当变压器2出现过载或过热时，红色过载报警指示灯3将点亮，低压油浸式断路器6的外部操作手柄4可以再地面手动操作开、关及复位。The overvoltage protection of the utility model adopts the most advanced metal oxide arrester 1, and is directly installed outside the box cover of the transformer 2, next to the high-voltage bushing of the transformer 2, which is convenient to connect and can protect the transformer 2 nearby. The high-voltage oil-immersed fuse 5 installed between the head end of the high-voltage coil inside the transformer 2 and the lead-out line of the high-voltage bushing can cut off the transformer from the power supply line when a fault occurs on the high-voltage side of the transformer 2. The protection of overcurrent and secondary short circuit is completed by the low-voltage oil-immersed circuit breaker 6 installed between the head end of the low-voltage coil inside the transformer 2 and the lead-out line of the low-voltage bushing. The low-voltage oil-immersed circuit breaker 6 has an external operating handle 4 and an overload alarm indicator 3. When the transformer 2 is overloaded or overheated, the red overload alarm indicator 3 will light up. The external operating handle of the low-voltage oil-immersed circuit breaker 6 4 It can be opened, closed and reset manually on the ground.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620493739.5U CN205789467U (en) | 2016-05-27 | 2016-05-27 | Self-protecting Three-Phase Distribution Transformers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620493739.5U CN205789467U (en) | 2016-05-27 | 2016-05-27 | Self-protecting Three-Phase Distribution Transformers |
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| CN205789467U true CN205789467U (en) | 2016-12-07 |
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| CN201620493739.5U Expired - Fee Related CN205789467U (en) | 2016-05-27 | 2016-05-27 | Self-protecting Three-Phase Distribution Transformers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653294A (en) * | 2016-12-20 | 2017-05-10 | 国网北京市电力公司 | High-voltage self-protection distribution transformer |
| CN109256258A (en) * | 2018-11-15 | 2019-01-22 | 特变电工沈阳变压器集团有限公司 | A kind of distribution transforming transformer of overload protection type |
-
2016
- 2016-05-27 CN CN201620493739.5U patent/CN205789467U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653294A (en) * | 2016-12-20 | 2017-05-10 | 国网北京市电力公司 | High-voltage self-protection distribution transformer |
| CN109256258A (en) * | 2018-11-15 | 2019-01-22 | 特变电工沈阳变压器集团有限公司 | A kind of distribution transforming transformer of overload protection type |
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