216835 ⎘
Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for spark-gap arresters
Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line
#2Disconnection and switch-over device for overvoltage protection, particularly for DC systems
#3Protection of a surge arrester with a better protection against failure from thermal overload in case of a temporary overvoltage in an electrical grid line
#4Arrester bypass devices
#5Lightning current transfer assembly for a wind turbine
#6Voltage surge protection device