216725 ⎘
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 in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers avoiding disconnection due to reactive fault currents
Semiconductor integrated circuit for detecting leakage current and earth leakage circuit breaker having the same
#2Method for preventing a dangerous, higher-frequency earth fault current for an electrical drive system
#3Method and circuit arrangement with means for a leakage current compensation in a photovoltaic system with multiple differential current sensors
#4Distributed detection of leakage current and fault current, and detection of string faults
#5Determination of the fault current component of a differential current
#6Systems, methods, and apparatus for leakage current masking and ground fault detection
#7Ground fault detection device
#8Circuit Protection Device
#9Earth leakage circuit breaker