A switchgear system includes a switchgear frame having an interior compartment and front opening and containing therein at least one electrical switchgear component. A truck carries an electrical component and is supported for movement on the switchgear frame. A drive mechanism connects the truck and is configured to rack in the truck into an electrically connected position with the at least one electrical switchgear component, rack out the truck from the electrically connected position into an electrically disconnected position, and rotate the truck upward from its disconnected position into a rotated position to allow operator access through the front opening to the at least one electrical component.

A switchgear system includes a switchgear frame having an interior compartment and front opening and containing therein at least one electrical switchgear component. A truck carries an electrical component and is supported for movement on the switchgear frame. A drive mechanism connects the truck and is configured to rack in the truck into an electrically connected position with the at least one electrical switchgear component, rack out the truck from the electrically connected position into an electrically disconnected position, and rotate the truck upward from its disconnected position into a rotated position to allow operator access through the front opening to the at least one electrical component.

A switchgear system may include a switchgear frame and a truck carrying a circuit breaker and supported for linear movement on the switchgear frame. A drive mechanism may rack in the truck and the circuit breaker is in electrical connection with primary circuit contacts, and may rack out the truck and the circuit breaker is electrically disconnected from the primary circuit contacts. As the drive mechanism racks in the circuit breaker, a shutter linkage moves a shutter opened, and as the drive mechanism racks out the circuit breaker, the shutter linkage moves the shutter closed over the primary circuit contacts.

A switchgear system may include a switchgear frame and a truck carrying a circuit breaker and supported for linear movement on the switchgear frame. A drive mechanism may rack in the truck and the circuit breaker is in electrical connection with primary circuit contacts, and may rack out the truck and the circuit breaker is electrically disconnected from the primary circuit contacts. As the drive mechanism racks in the circuit breaker, a shutter linkage moves a shutter opened, and as the drive mechanism racks out the circuit breaker, the shutter linkage moves the shutter closed over the primary circuit contacts.

The invention generally relates to an arrangement/integration, particularly for Switching Devices with external feeder, more particularly relates to a separate package of interlock system to be used for withdraw able type MCCBs with Direct operating handle to prevent unintentional racking operation of feeder. An interlocking arrangement for Switching Devices for blocking the operation of the switching device when feeder door is open, comprising a feeder assembly with Interlock (14) comprising of a feeder assembly and a Racking screw interlock assembly (15), wherein the feeder assembly comprises a Switching device (2, 14a) adapted to be mounted on a Feeder base plate (14b) of the feeder assembly and mechanically connected with an interlock slider (18) by means of a locking clutch cable (17); and a feeder channel (14c) upon which the Racking screw interlock assembly (15) is fixedly mounted by means of an interlock base plate (16) which is adapted to be mechanically connected to the feeder channel by means of plurality of fixing holes; and wherein the racking screw interlock assembly (15) comprises of the interlock base plate (16) adapted to accommodate the locking clutch cable (17) and the interlock slider (18) slidably mounted on the baseplate by means of combine function of plurality of step screws (20) and slots (16e) provided on the base plate; wherein two step screws are fixedly positioned on the interlock base plate (16c) by means of slots (16e) and operably connected by a spring mechanism and the other step screw is positioned on the interlock slider (18a) to provide slight movement of slider (18); wherein Locking clutch cable (17) and slider (18) is assembled in such a way that user cannot access the racking screw (14d) of the feeder (21) when locking clutch cable (17) is locked by the switching device.

The invention generally relates to an arrangement/integration, particularly for Switching Devices with external feeder, more particularly relates to a separate package of interlock system to be used for withdraw able type MCCBs with Direct operating handle to prevent unintentional racking operation of feeder. An interlocking arrangement for Switching Devices for blocking the operation of the switching device when feeder door is open, comprising a feeder assembly with Interlock (14) comprising of a feeder assembly and a Racking screw interlock assembly (15), wherein the feeder assembly comprises a Switching device (2, 14a) adapted to be mounted on a Feeder base plate (14b) of the feeder assembly and mechanically connected with an interlock slider (18) by means of a locking clutch cable (17); and a feeder channel (14c) upon which the Racking screw interlock assembly (15) is fixedly mounted by means of an interlock base plate (16) which is adapted to be mechanically connected to the feeder channel by means of plurality of fixing holes; and wherein the racking screw interlock assembly (15) comprises of the interlock base plate (16) adapted to accommodate the locking clutch cable (17) and the interlock slider (18) slidably mounted on the baseplate by means of combine function of plurality of step screws (20) and slots (16e) provided on the base plate; wherein two step screws are fixedly positioned on the interlock base plate (16c) by means of slots (16e) and operably connected by a spring mechanism and the other step screw is positioned on the interlock slider (18a) to provide slight movement of slider (18); wherein Locking clutch cable (17) and slider (18) is assembled in such a way that user cannot access the racking screw (14d) of the feeder (21) when locking clutch cable (17) is locked by the switching device.

An indoor switchgear or controlgear arrangement with unmanned operation and maintenance, for use in low, medium, or high voltage, includes: an arrangement of switching devices in an inner housing, which is furthermore provided with an outer housing; and a robot system, acting mainly in the inner housing. At least the switching devices other than maintenance critical parts are withdrawable. The switchgear or controlgear is provided with interlocks in order to prevent a wrong sequence of operation and prevent access to potentially hazardeous compartments. Metallic segregation is provided internally in the inner housing in order to achieve a needed service continuty level.

An indoor switchgear or controlgear arrangement with unmanned operation and maintenance, for use in low, medium, or high voltage, includes: an arrangement of switching devices in an inner housing, which is furthermore provided with an outer housing; and a robot system, acting mainly in the inner housing. At least the switching devices other than maintenance critical parts are withdrawable. The switchgear or controlgear is provided with interlocks in order to prevent a wrong sequence of operation and prevent access to potentially hazardeous compartments. Metallic segregation is provided internally in the inner housing in order to achieve a needed service continuty level.

A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control power thereto, in a particular order. Embodiments of the invention may prevent actuation of line contacts of the bucket, and shield the line contacts, until the bucket is fully installed in the motor control center. Other embodiments also prevent circuit breaker closure until the line contacts are engaged with a bus of the motor control center.

A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control power thereto, in a particular order. Embodiments of the invention may prevent actuation of line contacts of the bucket, and shield the line contacts, until the bucket is fully installed in the motor control center. Other embodiments also prevent circuit breaker closure until the line contacts are engaged with a bus of the motor control center.