R-voltage protection device, has spark gap utilized to prepare another spark gap for fast ignition during occurrence of fault, where delay wiring supplies over-voltage of latter spark gap opposite to former spark gap with delay

摘要

The device has a spark gap (4) utilized to prepare another spark gap (5) for fast ignition during occurrence of fault, where the spark gaps are accommodated in a same gas discharge space. A delay wiring (6) of inductor outside of the gas discharge space supplies over-voltage of the latter spark gap opposite to the former spark gap with a delay, where minimum length of the wiring amounts to 40 m. The spark gaps are provided for securing two symmetrical conductors against earth and for sequential ignition in connection with the wiring.