Abstract: A static junction seal assembly for electrically insulating a high potential between the interior and the exterior of a housing. The housing has first and second halves, having a first seal surface and a second seal surface, respectively. The seal surfaces are covered with a dielectric grease and are juxtaposed with a non-conductive gasket therebetween. The space between the seal surfaces increases from a central location to an edge location and the gasket adjacent the central location has a maximum thickness which decreases continuously from the central location to a gasket edge location when the gasket and seal surfaces are juxtaposed in an uncompressed state. The relative configuration of the first and second seal surfaces and the gasket are thus selected so that as the gasket is progressively compressed between the seal surfaces, a gasket bulge will initially form at the central location and thereafter move from the central location to the edge location.

Abstract: A portable phase angle meter instrument for use on electric utility power distribution systems.A portable phase angle meter instrument is interconnected between two distribution conductors to generate a voltage signal and current signal substantially in phase with the voltage across the conductors and the current in one of the conductors respectively. A potential probe with a conductive hook for interconnection to a first conductor, houses a first capacitor. A current probe assembly housing a second capacitor, has a head for interconnection to a reference conductor. The head has a Hall sensor or a transformer sensor for generating a current signal substantially in phase with the reference conductor current, and a plate for making electrical contact with the reference conductor. The capacitors are interconnected in series between the plate and the hook via a high voltage cable.

Abstract: A Hall sensing apparatus having a large dynamic range is adapted for generating a current signal substantially in phase with the current in a conductor. The Hall sensing apparatus has a magnetic field concentrator assembly with oppositely disposed pick-up plates, each with a centrally attached concentrator rod for being symmetrically positioned on either side of the conductor. A Hall sensor element is wholly positioned in the space between the ends of the rods remote from the plates. A current circuit, having an externally controlled current varying device and temperature drift control device in series with a current source, provides a Hall current through the sensor element. A detection circuit, coupled across the width of the sensor element, provides an inverted and non-inverted signal in phase with the conductor current which are coupled to the inverting input of a summing amplifier.