Low voltage front link protecting method, involves setting electric screen on low voltage link, and connecting electric screen with three-phase disconnection and independent stiker

摘要

The method involves setting an electric screen (19) on a low voltage link(15) that is constituted of an insulated cable and bar. The electric screen is connected with a three-phase disconnection (12) and an independent stiker (13). The stiker is sensitive to the current passed to a ground (14). The link is connected in downstream to a low voltage apparatus (17), which protects a distribution network (18) and in upstream connected to an electric bushing (16). Independent claims are also included for the following: (1) a device for electrically protecting the low voltage front connection of a transformer (2) a voltage transformer station.