依依视频在线观看_亚洲精品av福利_国产华语AV人人澡成人_人人搞人人干人人草_成人电影激情无码舔_亚洲色图动漫五月天精品视频_91嫩草传媒国产性爱王_91国产精品久久一区二区

The rated primary current has a wide range, which is used for the power-taking device of the anti-theft electric energy meter, etc., and can supply power to its internal three-terminal regulator; For example, when the neutral line is disconnected, the secondary winding of the EHC-VCT series current transformer generates power to make the electric energy meter work normally, which can meet the power supply needs of the three-terminal regulator and can be used to prevent electricity theft.