8180 results about "Switchgear" 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.

A marine power distribution arrangement includes a turbine-driven AC generator which supplies AC power at a frequency of 240 Hz through a switchgear unit to a transformer and a first power converter by which the power is converted to a variable frequency, variable voltage AC output for ship propulsion and to a second power converter by which the AC power is converted to a fixed voltage, fixed AC frequency or DC power to supply the ship service loads. A battery backup power supply may be switched in an emergency. In another embodiment four turbine-driven AC generators and two emergency power supplies are provided to drive two propulsion shafts as well as to supply the ship service loads.

The invention relates to a switchgear cabinet air conditioning arrangement, having a central control arrangement as well as sensors communicating therewith and air conditioning components. Numerous air conditioning "strategies" are made possible, and hence an adaptation to variable conditions of use, are achieved by the measures where various air conditioning components are disposed at various locations in the switchgear and are controlled or regulated by means of the central control arrangement in dependence on sensor signals and/or adjustable or programmable controls.

A method and a system for integration of a field device in an installation control system having a communications network and a control station functions in that a field device transmits a functional description of device functions to the control station in a standardized form, whereupon functions associated with the field device are installed on the control station, and communications links are set up between the device functions of the field device and the functions of the control station. In one preferred version of the invention, device functions are automatically or manually combined with an installation structure. The invention is preferably used with high voltage or medium voltage switchgear assemblies and leads to a considerable reduction in the complexity for specification and commissioning of installation internal communications links and to higher quality of a resulting installation control system.

The invention relates to a laterally-installed moving-type switch cabinet for receiving and distributing the electric energy, comprising a generatrix chamber, a breaker chamber, a relay meter chamber, a cable chamber and a voltage reliving chamber; the tri-phase polar pillar of the break is vertically distributed in the front and vertical direction of the switch cabinet; the moving direction of the hand cart is the vertical direction; the upper static contact head quietly through having touching the head box and fixing on generatrix bar directly of insulating sleeve function without the branch generatrix; the hand cart uses the electric or manual mechanism to move the hand cart entering the working position or the testing separating position; the breaker can process the electric opening and closing valve operation and the breaker processes the mechanical button operation via the emergency valve installed on the front plate, and the breaker can see the separating breaking opening of the main contact head via the observing window installed on the front plate.

This invention is a system and a method that uses the braking resistor, commonly used and available in electrically or hybrid-electrically propelled vehicles, to limit the precharge current during the startup of a high power ultracapacitor pack energy storage device and/or safely and rapidly discharge an ultracapacitor pack for maintenance work or storage to lengthen the life of the individual ultracapacitor cells and, correspondingly, the whole pack. The use of the braking resistor for precharging an ultracapacitor energy storage pack is an effective and less expensive method compared to other methods such as a separate DC-to-DC converter. This method includes the control logic sequence to activate and deactivate switching devices that perform the connections for the charging and discharging current paths.

A component kit for a switch cabinet, having a frame whose open sides can be clad with elements and at least one cabinet door. To be able to vary the installation space available in the switch cabinet, it is possible to fix different wall elements and/or cabinet doors to the faame, which have different depths extending perpendicular to the corresponding sides of the frame.

Insulated vacuum switchgear and active switchgear elements therefor are provided with a rigid support structure mechanically isolating a vacuum insulator from axial loads in use without reinforcing or insulating encapsulations. At least one of the elastomeric insulating housing and the support structure directly contacts an outer surface of the insulator. Systems and methods for assembling the switchgear are also provided.

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 disclosure relates to a method for producing circuit-breaker parts and plastic components for low, medium and high-voltage switching stations and to a corresponding circuit-breaker part. To obtain a simpler method of production with a higher variance of material characteristics, the outer insulation sleeve is produced in a plastic injection molding method, in which a vacuum interrupter chamber is sheathed in plastic.

The invention discloses an abnormal vibration analysis-based GIS (gas insulated switchgear) mechanical fault diagnosis method and system. The GIS (gas insulated switchgear) mechanical fault diagnosis method includes the following steps that: vibration signals on a GIS are acquired; de-noising processing is performed on the acquired signals through using a threshold de-noising method; various kinds of feature information contained in the signals are extracted by using a narrowband noise aided multivariate empirical mode decomposition (EMD) method; the power feature of the signals is extracted by using a power density function, and the maximal amplitudes of the power spectra of all IMF of each channel are calculated so as to form power feature matrixes under measured conditions; and a power feature matrix under a normal condition and/or power feature matrixes under various kinds of fault conditions which are obtained through tests are adopted as judgment criteria of faults. Compared with a traditional method, the method and system of the invention have no influence on the normal operation of a whole power system, and can monitor the running state of the GIS safely and reliably, and are suitable for being applied to GIS substations of various voltage levels.