1168results about "Switchgear details" patented technology

A metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., electrical cables, and bus bars in predetermined positions for allowing front access and / or rear access to them. One or more compartments are configured for enabling the electrical cables to enter into and / or exit out from the electrical enclosure for allowing front and / or rear access to the electrical cables. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components. One or more infrared windows and inspection windows are positioned on a front side and / or a rear side of the switchgear assembly for scanning and providing a visual indication of the electrical components, the electrical cables, and the bus bars.

A system, in one embodiment, includes a power distribution center having an enclosure with an access door configured to move between a closed position and an open position. The power distribution center includes a non-contact sensor disposed inside the enclosure, wherein the non-contact sensor comprises a non-contact voltage sensor, or a non-contact temperature sensor, or a combination thereof. The power distribution center also includes an indicator viewable outside of the enclosure while the door is in the closed position, wherein the indicator is coupled to the non-contact sensor.

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.

The invention relates to a draw-out automatic changeover switch provided with a shunt circuit. Prior automatic switchover switch needs repair and replacement during changeover, therefore, the operation is very inconvenient. The invention comprises a main-body switch, rollers, guide rails, locating pins, a shunt-circuit frame and a power supply connecting terminal A, a power supply connecting terminal B, a load connecting terminal, a shunt-circuit contact self-locking mechanism, a shunt-circuit moving contact, a shunt-circuit static contact, a shunt-circuit draw-out interlocking mechanism fixed on the frame. The switch mainly has the functions of draw-out and shunt circuit. When the main-body switch needs repair or replacement, the shunt circuit is switched on, the power is supplied to the load by a normal power supply, the main-body switch is drawn out to be repaired or replaced outside the power supply circuit; after repair, the main-body is pushed into the frame, the shunt-circuit switch is switched off, and the switch main-body is integrated into the system for continuous operation. Such process does not influence normal power supply to the load, and the repair and replacement become more convenient and rapid.

A seal assembly for an electrical enclosure having a draw-out circuit breaker and a number of conductors is provided having a movable first seal member and a movable second seal member. The circuit breaker includes a protruding nose portion that is engaged by the first and second seal members in a manner that sealingly engages the nose portion. The arrangement of the first and second seal members and the nose portion provides for the sealing engagement to be maintained when the circuit breaker is moved from a first position in which the circuit breaker is not electrically connected to the number of conductors and a second position in which the circuit breaker is electrically connected to the number of conductors.

In an electrical distribution cabinet a mechanism providing quick, reliable, passive arc blast control has a flue chamber surrounding the likely arc site such as an electrical connection point. The flue chamber provides a flue channel which lengthens the arc and attenuates the current and temperature until the arc is extinguished. Preferably, the flue chamber and channel are formed of opposable open-faced polyhedral structures, one fitting inside the other. The mechanism is particularly suited for draw-out circuit breaker connections in a switch gear cabinet.

A front accessible metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., and bus bars in predetermined positions for allowing front access to the electrical components and bus bars. The front accessible switchgear assembly further comprises a plenum chamber rearwardly positioned in the electrical enclosure and in communication with the compartments to provide an exit path for releasing pressure and gases. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components. The mounting block assembly is configured to reduce temperature rise in the compartments. Fuse sleeve assemblies operably connected to the control power transformer and the potential transformer allow high voltage primary connections in the electrical enclosure.

The invention discloses a blocking against misoperation, alarming and protecting device of a high-voltage switch cabinet. The back door of the high-voltage switch cabinet prevents entering a system by mistake with electricity, and an electrified display DD2 and an electromagnetic lock DS close the back door of the switch cabinet; an electrified display DD1, an electromagnetic lock contact DS1 of the back door of the high-voltage switch cabinet and a voice alarm BJQ are connected in series to form an electrified voice prompt alarming loop; the electrified display contact DD1, a back door stroke contact QS1, an intermediate relay KB1, a normally open contact KB1 and a singlechip P3.2 signal input port are connected in series to form a singlechip 89C51 signal input circuit; the device singlechip 89C51 outputs power supply trip, unit alarming and accident recording circuits after sequential operation, thus making up the bug of an anti-misoperation system; the invention has blocking for preventing misoperation of workers, has voice prompt alarming for preventing misoperation of workers and is provided with a tripping system cutting off the power supply when workers are in dangerous voltage. The invention can ensure personnel safety of workers and avoid personal injury and death.

A system, in one embodiment, includes a power distribution center having an enclosure with an access door configured to move between a closed position and an open position. The power distribution center includes a non-contact sensor disposed inside the enclosure, wherein the non-contact sensor includes a non-contact voltage sensor, or a non-contact temperature sensor, or a combination thereof. The power distribution center also includes an indicator viewable outside of the enclosure while the door is in the closed position, wherein the indicator is coupled to the non-contact sensor.

A drawer-type electric power control cabinet assembly with a position sensor comprises a control cabinet part (1), a drawer push-out part (5) and ground legs (25) fixed to a floor, wherein the control cabinet part (1) and the drawer push-out part (5) are fixedly connected together, a plurality of electric power control drawer boxes (2) which are arranged in an up-and-down mode are arranged in the control cabinet part (1), the drawer push-out part (5) is used for pushing out the electric power control drawer boxes (2) in the control cabinet part (1), the drawer push-out part comprises (5) a supporting body, a lifting driving part, a push-out driving part and a lock catch driving part, the lifting driving part comprises a lifting motor (4), a lifting driving screw (16) and a guiding rod (15), and the lifting motor (4) is connected with the upper end of the lifting driving screw (16) and used for driving the lifting driving screw (16) to rotate.

A cooling device for a circuit breaker which comprises a case having a front wall, a rear wall, an upper wall, a lower wall, two flanks, and a first series of side-by-side terminals and a second series of side-by-side terminals that protrude outside from the case for the connection of the circuit breaker with an electrical circuit. The cooling device includes at least one first body made of a thermal conducting material and which has a central portion suitable for being positioned transversally along and facing the first series of terminals so as to absorb heat generated at the first series of terminals, and a first end portion and a second end portion that protrude from the central portion and are configured so as to receive the heat absorbed by the central portion and to diffuse it outside the cooling device itself.

The subject of the invention is an electric power switchgear, an insulating radiator, and a method for installing the radiator in an electric power switchgear, and in particular in a medium or high voltage switchgear. The electric power switchgear comprising working elements placed in the housing and connected with busbars and branches, and cooled with air, is characterized in that it contains at least one insulating radiator made of thermoplastic material of increased thermal conductivity λ≧2 W / mK, which is placed in the electric field of the switchgear and which is connected by a non-permanent fastening to at least one busbar or / and at least one branch. The insulating radiator designed for the switchgear is an injection molding including a base plate to whose top face a system of heat evacuating elements of identical or diverse shape is attached, and to its side surfaces elastic assembly catches are fixed.

In a switchgear cabinet, the line side power conductors upstream of the main breaker are surrounded with are attenuating / extinguishing channels and protective conduit in a location prior to the conductor's attachment to the main breaker. Thus, passive arc attenuation can be had prior to the breakers, Personal Protection Equipment (PPE) levels can be predicted and controlled, and the need for action by circuit breakers during an arcing event is substantially lessened.

This invention discloses a breaker with self-locking function including a base plate, a control panel, a master slide plate, a drive slide, a guide bar, a fixed frame, a screw rod, a slide block, a first crown bar, a second crown bar, a connection bar and a release flat spring. This invention can lock the rotate of a handle to the screw rod when the breaker is at any position of separation, test and connection. De-block and reset is done by rotating the connection bar.

A metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., electrical cables, and bus bars in predetermined positions for allowing front access and / or rear access to them. One or more compartments are configured for enabling the electrical cables to enter into and / or exit out from the electrical enclosure for allowing front and / or rear access to the electrical cables. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components. One or more infrared windows and inspection windows are positioned on a front side and / or a rear side of the switchgear assembly for scanning and providing a visual indication of the electrical components, the electrical cables, and the bus bars.

The invention relates to electric control of a handcart in an electrical switch cabinet, in particular to a digital control method of an electric handcart and a device thereof. The invention controls and judges the position and the work state of the handcart to monitor the output power and the electric current of a motor of an electrically operated mechanism in real time. When the motor normally works, the invention does not start up protection; if abnormal situations such as clamping stagnation, stopping-up rotation, and the like happens, the invention increases the output electric current of the motor, controls the motor to be braked in real time, cuts off the electrical source of the motor, controls the motor to reversely rotate, smoothly unlocks clutches and protects the whole mechanism.

The invention relates to an intermediate switchgear cabinet comprising a cabinet housing and a diaphragm integrating with the cabinet housing which divides the enclosure space enclosed by the cabinet housing into a busbar room, a handcart room, a relay instrument room and a cable room according to the function. The cabinet housing and the insulation diaphragm of the invention adopt assembly rather than welding, thereby avoiding welding stress. Furthermore the size of the invention is small and the installation and trial run is convenient.

An on-line early warning method for abnormal temperature at plug contact in switch cabinet for power supply and distribution uses special temperature data collection device to carry on automatic cycle detection for surface temperature-rise value ruled and selected separately at outer surface of back cover for cable chamber and bus chamber of the switch cabinet, and the temperature-rise data correspond with there places are automatically collected in the operation course of the switch cabinet, then the collected data and related culculation result compared and analysed with basic data and original information by the computer in order to obtain the conclusion that the trend and the absolute value of the temperature vise value data and the related calculation result are normal or not, and the early warning is issued if there is an abnormal value.

The invention relates to one kind of shutter mechanism of high voltage switchgear cabinet. Which includes: a pare of guiding posts on the both walls of the circuit breaker chamber, the upper and lower valves sliding assigned to the guiding posts for shielding the static contact devices extended to the circuit breaker chamber, and a pare of traction devices on the wall of the circuit breaker chamber connect with the two ends of the lower valves, the synchronous interaction devices on the guiding posts for the upper and lower valves. Its advantages show as follow: the synchronous interaction devices keep the upper and lower valves perfectly synchronized and ensure the valves moves reliably. The synchronous interaction devices will not occupy the room of the circuit breaker chamber.

The invention relates to an electric connection mechanism which comprises at least one fixed terminal, at least two contact pieces and at least one slotting tool, wherein the fixed terminal is provided with a platy raised part extending forwards, the upper surface and lower surface of the free end of the fixed terminal are contact surfaces, and the free end thereof is provided with a hole or a groove at the left side and the right side respectively; a first contact surface is arranged at the rear end of each contact piece and provided with a hole or a groove, the shape of the first contact surface of each contact piece is matched with that of the contact surface of the fixed terminal, the other end of each contact piece is provided with a second contact surface vertical to the first contact surface, the first contact surfaces of the two contact pieces are pressed on the contact surface of the raised part respectively through elastic components, and the second contact surfaces of the two contact pieces are opposite to each other so as to form a plug-in clamping head; and the slotting tool is plugged in the plug-in clamping head, and the free end of the slotting tool is provided with a contact surface matched with the second contact surfaces of the contact pieces in shape. As for the electric connection mechanism, the contact pieces and the fixed terminal are well contacted all the time, the contact pieces and the slotting tool are maintained to be well contacted, and the error correction capacity is extremely good.

A device for connecting an electric line to a connection terminal for direct or indirect connection with a circuit breaker, which comprises at least one first electrically conducting body having a first end portion intended to be operatively connected to the terminal, and a second end portion intended to be operatively connected to a conductor element of the electric line, and at least one thermal conducting body comprising a hermetically sealed cavity containing a cooling fluid. The thermal conducting body is operatively coupled to the first electrically conducting body such that the hermetically sealed cavity has a first surface arranged in proximity to the first end portion and a second surface arranged in proximity to the second end portion.

A distribution switchgear has an equipment room, main busbar room and cable room, which are formed in a distribution panel housing by partitioning the housing, from front to back such that the equipment room is located just behind the front door of the housing, with the busbar room behind the equipment room. In the equipment room, are disposed a circuit breaker, a current transformer on a load side of the circuit breaker and a zero-phase-sequence current transformer on a power supply side of the circuit breaker. The equipment units are vertically arranged in the equipment room. In the busbar room are a solid-insulated main busbar, a solid-insulated link busbar connected with the main busbar and connected with one side of each of the equipment units and a solid-insulated branch busbar connected with the other side of each of the equipment units.

A withdrawable unit system for an electric switching device, having a housing containing a access door, which gives access to all control elements of the unit and can be closed as tightly as required by international standards, such as DIN EN 60529. The withdrawable unit system optionally has a moveable unit capable of blocking and releasing the electrical switching device in and from at least three defined positions withdrawn, test and plugged-in by using a slide, a lever, and notches with dedicated notch blocking devices.