216731 ⎘
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points of different systems, e.g. of parallel feeder systems
Sub-classes:Method and System for Detecting Phenomenon in Electrical Power Network
#2Disconnecting Device and Power Supply Network for a Motor Vehicle
#3Electrical network
#4Protection assistance device of multiple circuit breakers in low-voltage system
#5Method and system for locating ground faults in a network of drives
#6PROTECTING A REMOVABLE DEVICE FROM SHORT CIRCUITS
#7Overvoltage protection for a multivoltage vehicle electrical system
#8Electrical circuit for cutting off an electric power supply comprising transistors and fuses having redundant logic
#9AC power backfeed protection based on phase shift