Optical sensor assembly for installation on a current carrying cable

An optical sensor assembly for measuring current and voltage in a current carrying cable, the optical sensor assembly comprising:

• a base unit;
• an optical current sensor mounted on the base unit, the optical current sensor comprising a polarized light input, a light directing device, and a light output, the polarized light input being configured for transmitting a beam of polarized electromagnetic radiation into light directing device, and out the light output;
• at least one hook for hanging the base unit from the current carrying cable;
• a concentrator housing having a first end and a second end;
• a pivot of the second end of the concentrator housing for pivotally attaching the concentrator housing with the top end of the base unit such that the concentrator housing moves between an open position and a closed position;
• a magnetic concentrator having a first end and a second end that together define an airgap therebetween, the magnetic concentrator being mounted on the concentrator housing such that the magnetic concentrator fits around the current carrying cable when the base unit is hung from the current carrying cable by the at least one hook and when the concentrator housing is moved to the closed position, and further such that the light directing device of the base unit is operably positioned in the airgap of the magnetic concentrator when the concentrator housing is in the closed position;
• and
• a voltage sensor operably positioned on the base unit for measuring the voltage of the current carrying cable.

An optical sensor assembly for measuring current and voltage in a current carrying cable, the optical sensor assembly comprising:

• a base unit;
• an optical current sensor mounted on the base unit, the optical current sensor comprising a polarized light input, a light directing device, and a light output, the polarized light input being configured for transmitting a beam of polarized electromagnetic radiation into the light directing device, and out the light output;
• a magnetic concentrator having a first end and a second end that together define an airgap therebetween, the magnetic concentrator being mounted on the base unit such that the magnetic concentrator fits around the current carrying cable when the base unit is hung from the current carrying cable, and further such that the light directing device of the base unit is operably positioned in the airgap of the magnetic concentrator when the concentrator housing is in the closed position;
• an electrically conductive tube having a proximal end electrically connected to the current carrying cable, and a distal end;
• a grounded surface mounted proximate to the electrically conductive tube, separated by a gap from the electrically conductive tube, the surface having a ground stud adapted for attachment to a ground potential;
• and
• an optical voltage sensor operably positioned in the gap between the electrically conductive tube and the grounded surface.