220kV主变压器保护
220 kV main transformer protection
零电压软开关变换器
zero voltage soft switch inverter
开关变压器式高压电机软起动
switching transformer soft-starter
开关变压器技术
Switching transformer Technique
功率因数校正跟随升压技术电子镇流器离线式开关变换器
PFC follower boost technique electronic ballast off-line switching converter
变压器自动开关
automatic transformer switch
变压器有载开关的检测
Detection of Transformer On-load Tap Switch
变压器有载分接开关
onload tap changer of transformer
变压器分接头自动切换开关
automatic tap-changing device
主变压器平台
main transformer platform
主变压器高压侧
main transformer high pressure side
主变压器保护
main transformer protection
主变低压侧并联电容器
shunt capacitors at low voltage side of main transformer
变压器主保护
power transformer main protection