Abstract: A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.

Abstract: A bus assembly and bus assembly connector include one or more insulated members that have axial sleeves that fit within one another during assembly to form a nesting arrangement. The nesting arrangement of the axial sleeves allow reduction of the overall size of the bus assembly connector while satisfying power rating standards and dielectric clearances as well as allowing bolting of the bus assembly to thereby clamp and secure the bus assembly. The axial sleeves can be distinctively designed such that the phase members must be assembled in a predetermined order, with no components being omitted, to form the bus assembly connector or clamp the bus assembly.

Abstract: A motorized racking mechanism for racking a circuit breaker into and out of switchgear/board equipment allows for breaker service without operator proximity to the switchgear. A motor fixed to a cradle that receives a circuit breaker is coupled to a power transmission system that turns a control screw. The control screw laterally moves a crown-wheel device that causes the circuit breaker to be moved among a remove, test, and connected positions in response to a button arm being depressed via a front panel of the cradle. The button arm can be depressed under wireless remote control. A solenoid is coupled to a crank detent actuator that includes the button arm, and a wireless module actuates the solenoid, which moves the button arm, causing the motorized movement of the circuit breaker as if the button arm had been manually depressed. Indicator lights are visible on the front panel to indicate the position of the circuit breaker relative to the cradle.

Abstract: A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.

Abstract: A motorized racking mechanism for racking a circuit breaker into and out of switchgear/board equipment allows for breaker service without operator proximity to the switchgear. A motor fixed to a cradle that receives a circuit breaker is coupled to a power transmission system that turns a control screw. The control screw laterally moves a crown-wheel device that causes the circuit breaker to be moved among a remove, test, and connected positions in response to a button arm being depressed via a front panel of the cradle. The button arm can be depressed under wireless remote control. A solenoid is coupled to a crank detent actuator that includes the button arm, and a wireless module actuates the solenoid, which moves the button arm, causing the motorized movement of the circuit breaker as if the button arm had been manually depressed. Indicator lights are visible on the front panel to indicate the position of the circuit breaker relative to the cradle.

Abstract: A bus assembly and bus assembly connector include one or more insulated members that have axial sleeves that fit within one another during assembly to form a nesting arrangement. The nesting arrangement of the axial sleeves allow reduction of the overall size of the bus assembly connector while satisfying power rating standards and dielectric clearances as well as allowing bolting of the bus assembly to thereby clamp and secure the bus assembly. The axial sleeves can be distinctively designed such that the phase members must be assembled in a predetermined order, with no components being omitted, to form the bus assembly connector or clamp the bus assembly.

Abstract: A bus cooling fan that operates without an external electrical power supply. The fan is positioned proximate two bus bars of a polyphase electrical system. The fan includes a rotor supporting fan blades and mounted on an axle. The axle is supported by cross-braces in a shroud surrounding the rotor. The shroud is open at the ends. The fan is fabricated of non-ferrous, non-conducting material with the exception of the rotor. The bent rods which interact with the electromagnetic field created by the current-carrying bus bars of the polyphase electrical system to make the rotor function as an induction motor when the fan is placed proximate two bus bars.

Abstract: An adjustable height spacer for providing rigid support and insulation between the bus bars of an electrical panel. The spacer is adjustable in height to provide various distances between the bus bars. The spacer includes a pair of body members that are axially aligned. A repeating series of teeth of various heights is defined around the margin of each body member at one end. The teeth are configured such that when the toothed ends of two body members having identical tooth patterns are mated, the teeth operatively engage each other to provide a secure coupling when the body member is placed under a compressive force. The height of the body member is varied by rotating one body member with respect to the cooperating body member such that a selected set of teeth within the series is engaged.

Abstract: An adjustable height spacer for providing rigid support and insulation between the bus bars of an electrical panel. The spacer is adjustable in height to provide various distances between the bus bars. The spacer includes a pair of body members that are axially aligned. A repeating series of teeth of various heights is defined around the margin of each body member at one end. The teeth are configured such that when the toothed ends of two body members having identical tooth patterns are mated, the teeth operatively engage each other to provide a secure coupling when the body member is placed under a compressive force. The height of the body member is varied by rotating one body member with respect to the cooperating body member such that a selected set of teeth within the series is engaged.

Abstract: A bus cooling fan that operates without an external electrical power supply. The fan is positioned between a pair of bus bars. The fan includes a rotor having fan blades and is mounted on an axle, which is supported by cross-braces in a shroud surrounding the rotor and open at the ends. The fan is fabricated of non-ferrous, non-conducting material with the exception of bent rods that support the fan blades and are mounted on an axle. The bent rods interact with the electromagnetic field created by the current-carrying bus bars and act as a rotor for an induction motor when the fan is placed between bus bars.