找回密码
 ※快速注册※

QQ登录

只需一步,快速开始

搜索

变 压 器 使 用 维 护培训资料(英文)

某公司变压器使用维护培训资料(英文)
CONTENTS
Section One
Basic Knowledge of transformer

Section Two
Basic Work Principle of Transformer

Section Three
Operation of Transformer in Parallel

Section Four
Operation and Maintenance of Transformer

Section Five
Abnormal Operation and Remedies of Transformer

Section Six
Operation and Maintenance of Load Tap Switch



Section One
Basic Knowledge of Transformer
I.
Use of Transformer
The transformer is a static electric device which can transform alternative voltage and current to transfer electric power in same frequency between two or more windings by means of electromagnetic induction.
The transformer has a lot of uses. There are various kinds of transformers widely used in all departments of national economy. In view of the angle from the electric power system, an electric power network connects many power plants and users and the electric energy generated from the electric power network shall be always sent to user areas by transmission in long distance. In case the electric power to be transferred is constant, the higher the transferred voltage, the less the current to be needed because the voltage drop is in direct proportion with the current and the loss of electric energy is in direct proportion with the square of the current. Therefore it can largely reduce the voltage drop and energy loss of the transmission lines if higher transferred voltage is adopted. At present it is difficult technically to make the generator with higher voltage, alternatively, the step-up transformer is used to rise up the voltage at the terminal of the generator before the electric power is sent. The longer the transmission distance, the larger the transferred power and the higher the requirement of volume and voltage levels of the transformer. As there are a lot of levels of voltage existed in the power network, it should have transformers with different sizes of voltage to make connection.
On the other hand, when electric energy is transferred to the receiving terminal it should have the step-down transformer to reduce the high voltage on the transmission lines to the voltage of the power distribution system, then reduce the voltage to that required by all electric equipments through the distribution transformer.
It can be seen the position of the transformer in the electric power system is vital important. Not only it requires much transformers, normally the total installation capacity of transformers are 8-10 times of that of the generator, but also it requires that transformers should have good performances, safe and reliable operation.
Except in the electric power system, the transformer is also used in industries and mines where special power supply is needed, for example the transformer for the electric furnace in metallurgy, the transformer for the rectification in electrolysis or chemical industry, the transformer for electric welding, the transformer for test, the transformer for traction in railway and those products belonging to the category of the transformer such as mutual inductor, reactor, extinction coil etc. As they have similar basic principle and structure of the transformer and much application and varieties, they are called transformer-like products.
II.
Classification of Transformer
(1)
Classify according to use, there are power transformer, electric furnace transformer, rectification transformer, electric welding transformer, test transformer, voltage-regulating transformer, reactor and mutual inductor etc.

(2)
Classify according to number of output phase, there are single-phase transformer, three-phase transformer.

(3)
Classify according to cooling media, there are dry transformer, oil-immersed transformer and air transformer.

(4)
Classify according to cooling style, there are oil-immersed self-cooled transformer, oil-immersed air-cooled transformer, oil-immersed and forced oil circulation air-cooled transformer, oil-immersed and forced oil circulation water-cooled transformer and dry transformer.

(5)
Classify according to number of winding, there are double-winding transformer, three-winding transformer and autotransformer.

(6)
Classify according to style of voltage-regulating, there are field-free voltage-regulating transformer and load voltage-regulating transformer.

(7)
Classify according to structure of iron core, there are core-type transformer and shell-type transformer.

(8)
Classify according to insulation level of the neutral point, there are full insulation transformer and tap insulation transformer.

(9)
Classify according to material, there are copper wire transformer and aluminum wire transformer.

........................
该帖共收到 11 条回复!
看懂没?不懂告俺,俺有中文版的哈

变压器基本知识(英文).doc

381 KB, 下载次数: 11, 下载积分: 金币 -2

售价: 2 金币  [记录]

发表于 2009-11-23 11:13:29 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

想得到,但没有钱,可惜
发表于 2009-12-3 21:01:48 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

可以降价吗?
发表于 2009-12-3 21:02:41 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

可以降价吗? 同问 太贵了!
发表于 2009-12-6 16:07:50 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

我卷了~~~~~~~  
发表于 2013-4-1 09:21:08 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

都是那么过来的  
发表于 2013-12-24 09:08:46 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

我在顶贴~!~  
发表于 2014-5-14 08:49:47 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

好贴子不多啊  
发表于 2014-6-19 09:41:39 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

我率天兵天将 将你打回原形~~~  
发表于 2014-8-24 10:32:53 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

今天无聊来逛逛  
发表于 2015-8-8 17:27:18 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

哈哈,这么多的人都回了,我敢不回吗?赶快回一个,很好的,我喜欢  
发表于 2016-8-11 09:49:41 | 显示全部楼层

回复 | 支持 | 反对 使用道具 举报

您需要登录后才可以回帖 登录 | ※快速注册※

本版积分规则

美图秀

    • 综合管廊光纤电话系统设计图
    • 防爆灯型号含义及适用范围
    • 不锈钢防爆分析小屋技术说明
    • 工业现场防爆防护措施
    • 防爆产品维护和注意事项
防爆电气论坛声明
中国防爆论坛欢迎您的光临!本站提供网上交流平台、网络资源分享,是专业的防爆行业科技自媒体。请勿发布违反国家规定及有悖道德之內容;
站内文责自负,版权属原作者所有!有关于本站任何之事宜,欢迎和我们联系[QQ:496290836] ,我们将尽快处理!
快速回复 返回顶部 返回列表