| 摘要 |
A combined protection system with a screened phase conductor and FI comprises phase and neutral conductors, automatic switch, a differential current transformer DCT, an electromechanical relay with a constant magnet and an uncoupler. A phase conductor is made as a screen made of conductive rubber, which serves as a neutral conductor, a coil is mounted in DCT with a varistor connected to its grounding circuit through a grounding probe. |
