Abstract: A wiring and power distribution device for a cabinet housing electronic equipment. The distribution device includes a plurality of compartments. Each compartment adapted to contain an electronic component, such as an uninterruptible power supply, a power-conditioning device, or a power distribution center containing circuit breakers. The distribution device also includes a cooling compartment, including a fan or passive convective chimney arranged to cool the interior of the cabinet with ambient air. The distribution device provides a single input point for power and signal wiring, and at least one output point for connection to the electronic devices contained within the cabinet.

Abstract: In one aspect a single-phase transformer is provided that includes: a primary side configured to receive a primary line to line voltage of a three-phase source; and a secondary side configured to output a secondary line to line voltage having a zero amplitude and substantially similar first and second line to neutral secondary voltages. In other aspects of the invention, systems and methods are provided for mitigating harmonics that employ the transformer.

Abstract: An embodiment of a hinge has a first part with a pin, the pin defining a longitudinal axis, and a second part with a receptacle for the pin. The first and second parts are arranged to rotate relative to one another about the axis with the pin in the receptacle. Mutually cooperating formations on the pin and receptacle are arranged to permit separation of the first and second parts along the axis in a first position of relative rotation of the first and second parts and to obstruct separation of the first and second parts along the axis in a second position of relative rotation of the first and second parts.

Abstract: A secure rack system comprising a cabinet, a frame, and a pivot hinge assembly mounting the cabinet to the frame. The assembly includes a first hinge pin bushing adapted to mount to the cabinet and a second hinge pin bushing adapted to mount to the frame. The hinge pin bushings each have a hole for receiving a pin, and substantially complementary mating surfaces for providing a bearing interface. The pin includes a head and a terminal end. Threads are formed on a portion of the pin which engage with threads in the second hinge pin bushing. A locking mechanism is removably attached to the pin near its terminal end.

Abstract: A pivot hinge assembly for mounting a cabinet to a frame. The assembly includes a first hinge pin bushing adapted to mount to the cabinet and a second hinge pin bushing adapted to mount to the frame. The hinge pin bushings each have a hole formed through it for receiving a pin, and substantially complementary mating surfaces for providing a bearing interface. The pin includes a head and a terminal end. Threads are formed on a portion of the pin which engage with threads in the second hinge pin bushing. A locking mechanism is removably attached to the pin near its terminal end. In one embodiment, the assembly includes a wear strip mounted to either the cabinet or the frame and which provides a low friction bearing surface between the cabinet and the frame.

Abstract: An embodiment of a hinge has a first part with a pin, the pin defining a longitudinal axis, and a second part with a receptacle for the pin. The first and second parts are arranged to rotate relative to one another about the axis with the pin in the receptacle. Mutually cooperating formations on the pin and receptacle are arranged to permit separation of the first and second parts along the axis in a first position of relative rotation of the first and second parts and to obstruct separation of the first and second parts along the axis in a second position of relative rotation of the first and second parts.

Abstract: A relay rack includes a base including first and second base brackets. Each base bracket has a vertical base flange attached integrally to a horizontal base flange. First and second support brackets are connected to each base bracket. Each support bracket has a single vertical support and a single horizontal support connected to the vertical support. The support brackets may also include a single vertical end support adapted to be connected to the vertical flange of the base bracket. The vertical support extends along a substantially vertical plane that forms a dihedral angle of less than 90 degrees with the plane of the vertical base flange. In a direction in which the horizontal base flange extends from the vertical base flange, the vertical supports on each base bracket extend convergently toward one another.

Abstract: An embodiment of an enclosure for electrical equipment is described. The enclosure has a back part arranged to be mounted to a fixed support and having an open front, and a front part having an open back, arranged to contain electrical equipment, and hinged to the back part. A latch is mounted within one of the back and front parts, and is arranged to latch the front part and the back part closed. A key-operated control on the front of said front part permits a user to release the latch only by use of a key.

Abstract: A remote electrical power control switch assembly for controlling power to a controlled device includes an electrical switch having a lever actuator. The switch is changed between an off state and an on state by movement of the lever between a first position and a second position, respectively. A key or lever operated cam lock includes a cam which operatively couples the cam lock to the switch lever. The cam lock is manually rotatable about a central axis between a first position wherein power is not provided to the controlled device and a second position wherein power is provided to the controlled device. The switch assembly preferably includes a piggyback plug adapted to be inserted into an electrical outlet and adapted to receive a second plug operatively coupled to the controlled device. The remote switch assembly may comprise a first and second mounting brackets.

Abstract: A relay rack includes a base including first and second base brackets. Each base bracket has a vertical base flange attached integrally to a horizontal base flange. First and second support brackets are connected to each base bracket. Each support bracket has a single vertical support and a single horizontal support connected to the vertical support. The support brackets may also include a single vertical end support adapted to be connected to the vertical flange of the base bracket. The vertical support extends along a substantially vertical plane that forms a dihedral angle of less than 90 degrees with the plane of the vertical base flange. In a direction in which the horizontal base flange extends from the vertical base flange, the vertical supports on each base bracket extend convergently toward one another.

Abstract: An embodiment of an enclosure for electrical equipment is described. The enclosure has a back part arranged to be mounted to a fixed support and having an open front, and a front part having an open back, arranged to contain electrical equipment, and hinged to the back part. A latch is mounted within one of the back and front parts, and is arranged to latch the front part and the back part closed. A key-operated control on the front of said front part permits a user to release the latch only by use of a key.