AUTO-TRANSFORMERS-油浸式变压器-变压器类产品专区 产品库-供应-变压器市场网
 
       
 
分享到:

AUTO-TRANSFORMERS

点击图片查看原图
单 价: 面议 
起 订:  
供货总量:
发货期限: 自买家付款之日起 3 天内发货
所在地: 江苏省
有效期至: 长期有效
最后更新: 2020-07-10
浏览次数: 10309
询价
公司基本资料信息
 
 
产品详细说明
At higher voltages, large auto-transformers are used to interconnect the 400kV-500kV systems with either the 230kV-275kV systems or 120kV-145kV systems (the exact values depend on the country being considered).

The HV and MV windings in an auto-transformer are connected together unlike in other transformers. The result is that the MV winding (common winding) is shared between the MV and HV systems. This results in a smaller and less expensive transformer than if the windings were separated as in a conventional fully rated two winding transformer.

However, this is only advantageous if relatively close voltage ratios are used. A separate delta connected tertiary winding may be provided for harmonic suppression or for the supply of local loads at lower voltages.

These auto-transformers are generally more complex than generator step-up transformers and their dielectric design more difficult. Their performance under short-circuit has also to be carefully analysed at the design stage, as they are connected to large systems with high short circuit fault capacities capable of the bulk infeed of fault current during a short circuit on the external system.



[ 供应搜索 ]  [ ]  [ 告诉好友 ]  [ 打印本文 ]  [ 关闭窗口 ]

变压器市场网 电话:010-69579894 传真:010-58043546 咨询热线:18501158905 资料专用:byqsc2008@163.com 投诉QQ:1464449166 媒体合作QQ:153590855