An in-line power disconnect assembly for electrical power distribution systems is provided. The in-line power disconnect assembly includes a first end section, a second end section, at least one insulator positioned between the first end section and the second end section, and a switch assembly positioned between the first end section and the second end section. Each of the first and second end sections include a conductor clamp that can be rotated or twisted relative to a longitudinal axis of the first or second end section between a clamping position and an open position.

A switch including a first electrical terminal, the first electrical terminal including a blade pivotable between an open position and a closed position, and a rod extending from the first electrical terminal parallel to the blade. The switch further includes a second electrical terminal configured to receive the blade when in the closed position, the second electrical terminal including a vacuum interrupter, wherein the vacuum interrupter engages the rod when in the closed position. Rotating the first electrical terminal in a first direction causes the blade to disengage from the second electrical terminal at a first point, and further rotating the first electrical terminal in the first direction causes the rod to disengage from the vacuum interrupter at a second point.

Embodiments of a disconnector and a switchgear, wherein the disconnector comprises a contact assembly operable to change a status of a circuit, the disconnector arranged in the circuit; shafts adapted to be driven to rotate to operate the contact assembly; and a transmission unit arranged between the shafts and comprising: a plurality of gears coupled to the shafts to enable the shafts to rotate with a mutual engagement of the plurality of gears; and a holding assembly adapted to hold radial positions of the plurality of gears to ensure the mutual engagement of the plurality of gears. By arranging the holding assembly to hold the radial positions of the gears to ensure the mutual engagement of the plurality of gears, only one input shaft and one transmission unit are enough to transmit large torques sufficient to operate the contact assembly.

Embodiments of a disconnector and a switchgear, wherein the disconnector comprises a contact assembly operable to change a status of a circuit, the disconnector arranged in the circuit; shafts adapted to be driven to rotate to operate the contact assembly; and a transmission unit arranged between the shafts and comprising: a plurality of gears coupled to the shafts to enable the shafts to rotate with a mutual engagement of the plurality of gears; and a holding assembly adapted to hold radial positions of the plurality of gears to ensure the mutual engagement of the plurality of gears. By arranging the holding assembly to hold the radial positions of the gears to ensure the mutual engagement of the plurality of gears, only one input shaft and one transmission unit are enough to transmit large torques sufficient to operate the contact assembly.

A sensor system for measuring an angle of a gate of an isolating switch of overhead lines, comprising an optical fiber angle sensor, a base, a support plate, a light source fiber, a laser transmitter, an aluminum box, a relay, a step-down power module, a control circuit board, a photoelectric converter, and a receiving optical fiber. The support plate is arranged on an upper part of a pillar insulator; the optical fiber angle sensor is arranged on the base to detect a rotation angle of the gate; the laser transmitter is controlled to emit a laser beam into the light source fiber; the laser beam is received by the receiving optical fiber and transmitted to the photoelectric converter to convert a light intensity into a voltage signal; the converted voltage signal is transmitted to the control circuit board for processing, and the angle of the gate is output.

A disconnector to reduce considerably high voltage and high frequency current generated during the service no-load opening and closing, the disconnector comprising a first main contact a second main contact, a sliding contact and an arcing horn having a length, the disconnector having a connected state, an intermediate state and a disconnected state, wherein in the connected state a first electrical contact is established between the first main contact and the second main contact, in the intermediate state the first electrical contact is interrupted while a second electrical contact exists between the sliding contact and a contact position on the length of the arcing horn, and in the disconnected state the first electrical contact and the second electrical contact are interrupted, wherein at least a part of the length of the arcing horn comprises an electrical filter configured to provide a resistance and an inductance to an electrical current.

An exemplary working cylinder for a drive of an electric circuit breaker includes a base that includes a cylinder head and a cylinder body that are connected to one another. Additional components are fastened to the cylinder head as a core piece of the drive, and a thrust ring is guided on an outer surface of the cylinder body. The thrust ring compresses mechanical springs in the mechanical resilient energy storage device by way of a storage piston in a storage module.

A mechanical interlock assembly for a disconnector and an earthing switch. The mechanical interlock assembly comprises: a main interlock disc configured to actuate a movable contact of a disconnector, and at least one earthing switch interlock disc configured to actuate respective movable contact of at least one earthing switch respectively. The main interlock disc includes at least one first groove, and each of the at least one earthing switch interlock discs includes a third groove, and it is provided with a movable interlock pin between the main interlock disc and each earthing switch interlock disc respectively. The interlock assembly can interlock the disconnector and the at least one earthing switch, and has the advantages of a simple structure, low cost and flexibility for different arrangements. A further mechanical interlock assembly is also provided to interlock another disconnector and one of the above at least one earthing switch.

A blade assembly for an electrical switch. The blade assembly including a rocker assembly configured to enable rotation of said blade assembly. The rocker assembly including: a first rocker component, said first rocker component having a first rocker pin, and a second rocker component, said second rocker component having a second rocker pin that depresses when said first rocker pin is depressed.

A blade assembly for an electrical switch. The blade assembly including a rocker assembly configured to enable rotation of said blade assembly. The rocker assembly including: a first rocker component, said first rocker component having a first rocker pin, and a second rocker component, said second rocker component having a second rocker pin that depresses when said first rocker pin is depressed.