2015results about "Switchgear with withdrawable carriage" patented technology

A motorized racking operator for racking a circuit breaker into and out of electrical switchgear is disclosed. The racking operator includes a motor, an On-Off control in signal communication with the motor, an anti-rotation bracket securely attached to the motor, and a latch. The motor has a drive shaft with an end configured to operably engage with a receiving end of a racking shaft. The latch serves to removably secure the motor and bracket to the circuit breaker such that the motor and bracket move in unison with the circuit breaker in response to the motor driving the racking shaft to rack the circuit breaker into and out of the switchgear. The anti-rotation surface of the bracket engages with a surface of the circuit breaker to prevent rotation of the motor in response to the motor applying a torque to the racking shaft.

The invention relates to a drawer-type power control cabinet assembly capable of dehumidifying, which comprises a control cabinet part (1), a drawer push-out part (5) and foot margins (25) fixed on a floor. The control cabinet part (1) and the drawer push-out part (5) are fixedly connected together; a plurality of power control drawer boxes (2) are arranged up and down in the control cabinet part (1); the drawer push-out part (5) are used for pushing out the power control drawer boxes (2) in the control cabinet part (1); the drawer push-out part (5) comprises a supporting body, a lifting driving part, a push-out driving part and a latch driving part; the lifting driving part comprises a lifting motor (4), a lifting driving screw (16) and a guide rod (15); and the lifting motor (4) is connected with the upper end of the lifting driving screw (16) so as to drive the lifting driving screw (16) to rotate.

A door interlock assembly is for a draw-out circuit breaker assembly. A draw-out circuit breaker is housed within an enclosure including a door and includes a poleshaft operable between first and second positions corresponding to separable contacts being opened and closed, respectively. The door interlock assembly includes a pivot member coupled to the poleshaft and a door latch interconnected to the pivot member by a linkage, such as a threaded drive rod. The door latch pivots such that a first end thereof engages and locks the door of the enclosure when the poleshaft moves to the second position. An optional mechanical sensor assembly adapted to trip the circuit breaker when the door is positioned in any position other than closed, is also disclosed.

A switching device having a frame, in which an actuator adapted to rotate a main shaft of the switching device and rotatable around an axis of rotation, the actuator having a 0 position, an I position and a first dead point between the 0 position and the I position, the I position being located by a given angle (α₆) in a first direction relative to the 0 position. The actuator also has a testing position, the testing position being located by a predetermined angle (β₆) in a second direction relative to the 0 position, the second direction being opposite relative to the first direction.

Disclosed is a control terminal automatic connection apparatus for an air circuit breaker and an air circuit breaker having the same, the apparatus comprising: a cam, a lever having one end portion that can be connected to the cam or separated from the cam and rotatable by the rotation driving force transferred from the cam when connected to the cam, a rod connected to the lever and thus movable in a vertical direction according to the rotation of the lever, a fixed control terminal module fixedly installed at the main body, and a movable control terminal module installed at the cradle and movable to a position for being connected to the fixed control terminal module of the main body and a position for being disconnected therefrom.

A switch assembly for an electrical panel configured to receive electrical power from either a first power supply or a second power supply. The switch assembly includes a transfer switch operable to electrically connect the panel to receive electrical power from the second power supply when power is interrupted from first power supply. An indicator light at the panel illuminates so as indicate that electrical power from the first electrical power supply is restored while the transfer switch is positioned to receive electrical power from the second electrical power supply. A light switch is connected to selectively interrupt illumination of the indicator light. An interlock member interconnects the light switch and the transfer switch so that movement of the interlock member to connect the electrical panel to receive electrical power from the first power supply simultaneously moves the light switch so as to interrupt illumination of the indicator light.

A system for remotely racking a horizontally movable circuit breaker includes a motor as well as a transmission connectible to the motor and to a racking screw for moving the circuit breaker. The system further includes a mounting bracket for holding the transmission and a controller for controlling the motor from a location remote from the circuit breaker.

A disconnect mechanism for an electrical system that is integrated with the enclosure of the system, yet includes an external handle for closing and opening the electrical circuit. The invention utilizes the system's circuit breaker to switch the current on or off, eliminating the need for a separate external disconnect. Moving parts are limited to an external actuating handle connected by a shaft to an actuating arm, which has an opening whose inner edges press against a pin connected to the circuit breaker to trigger its movement between the on and off positions. Automatic tripping of the circuit breaker during a system overload moves the external handle to the off position, furnishing visual evidence of the systems working status. A watertight seal maintains the integrity of the electrical system's enclosure.

The invention relates to the technical field of electrical power system equipment, in particular to an intelligent medium voltage switch cabinet. The intelligent medium voltage switch cabinet comprises a closed metal cabinet body. A handcart chamber, a bus chamber, a cable chamber and a meter chamber are arranged in the cabinet body in a separated mode. An intelligent disconnector is arranged in the handcart chamber. The intelligent disconnector comprises a control box, a three-phase moving contact and an electric chassis truck. A mechanical property on-line monitoring device, a disconnector control loop parameter measurement device and an intelligent control module are arranged in the control box. A communication interface connected with the intelligent control module is arranged on the upper portion of the control box. An intelligent module data acquisition device connected with the communication interface is arranged in the meter chamber. The intelligent medium voltage switch cabinet has the functions of intelligent monitoring, intelligent diagnosis and intelligent control, and is compact in structure, good in mechanical performance and electrical performance, and safe and reliable in operation.

A portable, remote racking device that is controlled by a remote control. The remote racking device includes a drive that fits into a corresponding crank access hole formed in a front panel of a cradle housing a circuit breaker installed into a switchgear. The drive turns a mechanism inside the cradle that causes the circuit breaker to be racked into or out of the switchgear. The remote racking device includes an actuator pin that abuts a corresponding button arm protruding through the front panel. The remote control includes a control for depressing the button arm and another control for causing a motor to rotate the drive. The actuator pin detects when the button arm pops out of the panel, and a circuit in the remote racking device briefly reverses the motor to bring it and the circuit breaker to a sudden stop, preventing the mechanical linkages of the mechanism from locking-up or becoming damaged and avoiding over-torquing the motor.

The invention discloses a drawer type power cabinet which comprises a cabinet body (1). A first cavity (11) and a second cavity (12) are arranged in the cabinet body (1). A horizontally moving frame (2) is arranged in the first cavity (11). A first projection (21) is arranged at the top of the horizontally moving frame (2). A guide rod (211) runs through the first projection (21) and extends in horizontal direction. A second projection (22) is arranged at the bottom of the horizontally moving frame (2). A horizontal drive screw (221) runs through the second projection (22) and extends in horizontal direction. One end of the horizontal drive screw (221) in extending direction is in rotatable matched connection with a drive mechanism, and the other end is in rotatable matched connection with the inner wall of the cabinet body (1). A first recess (23) and a first telescopic drive device (25) are arranged in the horizontally moving frame (2). The drawer type power cabinet provided by the invention has the advantages of easy maintenance, stable operation and high safety, and prevents people from mistaken touching.

The invention discloses a central high pressure cabinet handcart transfer trolley, which comprises a door-shaped frame; a tray is mounted in the door-shaped frame; a travelling mechanism is arranged at the bottom of the door-shaped frame; a suspension mechanism is mounted at the top of the door-shaped frame; and a lifting mechanism is mounted at one side of the door-shaped frame. The structure performance and the function of the transfer trolley are improved and expanded.

The invention relates to a safe cabinet-split type switch cabinet and a using method thereof. The safe cabinet-split type switch cabinet comprises a cabinet body. The cabinet body is internally provided with a plurality of independent drawer units. Each drawer unit is provided with a plurality of wiring interfaces. Grooves for wires to be installed are formed in the side wall of the cabinet body. A plurality of fans are arranged on the side wall of the cabinet body. A fire extinguisher is arranged outside the side wall of the cabinet body. The spraying port of the fire extinguisher is communicated with the top of the cabinet body. An electromagnetic attraction mechanism controlling opening and closing of a safety pin of the fire extinguisher is arranged in the outlet of the fire extinguisher. The cabinet body is internally provided with a smoke detector, a temperature sensor and a heating device. A control device and an alarm device are arranged on the top of the cabinet body. The control device receives signals of the smoke detector and signals of the temperature sensor and controls operation of the fans, the heating device, the electromagnetic attraction mechanism and the alarm device. The safe cabinet-split type switch cabinet is installed and maintained conveniently, the temperature inside the switch cabinet can be effectively controlled, an alarm can be given when open fire occurs in the switch cabinet, and the open fire in the switch cabinet can be put out.

The invention relates to a low-voltage draw-out switch gear, in particular to a propulsion mechanism for a drawer of a low-voltage draw-out switch cabinet, including a precession mechanism and a three-position locking mechanism, wherein, the precession mechanism includes a transmission spiral which is arranged on a bottom board of the drawer by a support and a groove-shaped locating piece which is inosculated with the transmission spiral and pushes the drawer to move forward and backward and is arranged on a layer board of a cabinet body; the positioning with the linear movement of the drawer is carried out by a spiral protrusion of the transmission spiral and a chute of the groove-shaped locating piece, so as to ensure the drawer not to be skewed and generate a mechanical movement dead point when the drawer receives the reverse withdrawal force. The invention adopts the multi-ring effort-saving propulsion principle of the transmission spiral to ensure the effort-saving propulsion of the drawer, creatively utilizes the spiral protrusion of the transmission spiral and the chute of the groove-shaped locating piece to effectively control the balanced movement of the drawer and fully controls the drawer to be balanced absolutely and not be skewed when the drawer receives the reverse withdrawal force, the operation is flexible and easy, and the operating mechanical faults can be eliminated.