ADAPTIVE UNDERVOLTAGE PROTECTION FOR THREE-PHASE LOAD USING SINGLE CURRENT SENSOR

Power cord LCDI and hotspot detector circuit

Electric circuit device with a residual current monitoring module for detecting a closed switch contact as well as a protection ground conductor interruption in a one or multiphase electric supply line

Method for detecting an open-phase condition of a transformer

Apparatus, power supply, method and recording medium to determine a state of a three-phase AC power supply using instantaneous voltages of three phases of the AC voltage

Switching power supply with resonant converter

System and method of remote bridging a utility meter

Circuit for loss of phase detection

Method for detecting an open-phase condition of a transformer

3 phase undervoltage trip device and molded case circuit breaker therewith

Determining status of electric power transmission lines in an electric power transmission system

Method for detecting an open-phase condition of a transformer

System for transmitting power and data

Air conditioner

Twelve-pulse autotransformer rectifier units

System and method for detecting, localizing and quantifying excess voltage drop in three-phase AC circuits

Dimmer Circuit with Improved Inductive Load Imbalance Protection

Time delay with control voltage sensing

Method and device for protecting an autotransformer for an aircraft

Detection of an AC input phase-loss on a multi-phase AC servo drive

Phase failure detector and a device comprising the same

Method and apparatus for improving operational reliability during a loss of a phase voltage

Dimmer circuit arrangement

Dimmer circuit with improved inductive load imbalance protection

Dimmer circuit with improved ripple control

Detection and protection of power phase loss and neutral failure