Abstract: A power capacitor controller that adaptively and/or automatically determines a variety of operational parameters, including adaptively and automatically establishing the line phase angle correction value; adaptively and automatically establishing the appropriate electrical levels determining connection and disconnection of the capacitor bank relative to the line; adaptively and automatically establishing appropriate guard voltage levels determining connection and disconnection of the capacitor bank relative to the line; automatically determining when the capacitor bank is inoperative; automatically determining when a reverse power line condition and a reverse current line condition exists; automatically determining when a capacitor bank switching operation is a result of multiple capacitor banks on the line, and automatically determining when the operational set points of the controller are reversed.

Abstract: A power line post insulator has a housing that encloses two inductive sensors that transversely straddle a recess which receives the power conductor. Wires connect the sensors additively with respect to voltages induced by currents in the conductor between the sensors. The sensors may each include one or two additively connected coils.

Abstract: In a watt-hour meter pulse width modulated signals, representing the voltage supplied to a load, serve as chopping signals that modulates a waveform representing current to produce an output indicative of power. A series of pulses is spaced on the basis of the power signal and the number of pulses connected as a measure of energy.