42 results about "Network protector" patented technology

A power distribution communication system includes a plurality of network protectors, a plurality of sensors or devices, a plurality of wirelessly communicating user interfaces, and a gateway. The gateway includes a wired communication network interface structured to communicate with at least one of the network protectors, the sensors or the devices, a first wireless communication network interface structured to wirelessly communicate with at least one of the network protectors, the sensors or the devices, and a plurality of second wireless communication network interfaces structured to wirelessly communicate with the wirelessly communicating user interfaces. A processor is operatively associated with the wired communication network interface, the first wireless communication network interface and the second wireless communication network interfaces, and is structured to pass data, information and commands between the various interfaces.

Network protectors isolate the secondary side of a transformer from a load distribution network. It is useful to have information about the electrical parameters for the transformer and the load side of an open network protector and it is useful to have access to electrical parameters for a closed network protector. Information about a network protector can be provided to a transmitter used to convey information about the transformer associated with that network protector so that information about the network protector can be sent over power liner carrier to a centralized receiver.

A handle assembly for a network protector where the network protector includes a circuit breaker and a housing assembly, the circuit breaker having a trip bar structured to move between a first position and a second position corresponding to an open and closed position of the circuit breaker, respectively, the housing assembly having a sidewall with an opening. The handle assembly includes a linkage assembly, a shaft assembly, a handle member and locking assembly. The shaft assembly has a shaft, where the shaft rotatably is disposed in the opening and structured to move between a first and second position. The handle member has an elongated body and an elongated grip extending generally perpendicular to the handle body. The handle body is coupled to, and structured to rotate, the shaft. The locking assembly has an elongated release grip. The locking assembly is coupled to the handle member and structured to selectively lock the shaft in at least the first position, and the release grip is structured to unlock the locking assembly. The release grip extends generally adjacent and parallel to the handle grip. The linkage assembly is coupled to the shaft and structured to engage the trip bar so that when the shaft is in the first position, the trip bar is in the first position and when the shaft is in the second position, the trip bar is in the second position.

A network system includes a network bus structured to power plural network loads. A generator is structured to provide forward power flow to the network bus. A generator protector relay cooperates with the generator. Plural network protectors correspond to plural power source feeders, which are structured to provide forward power flow through corresponding network protectors to the network bus. Each network protector includes a network protector relay having an interface communicating power flow information to a communication network. A controller cooperates with the generator protector relay and includes an interface receiving the power flow information from the communication network and a processor determining whether there is forward power flow through the network protectors to the network bus. The processor enables the generator protector relay responsive to the forward power flow and reduces output from the generator responsive to the forward power flow being less than a predetermined amount.

An enclosure for a network protector in an electrical distribution network includes a cabinet body that defines an interior region that accepts the network protector. The cabinet body three electrodes sealed with and electrically isolated from the cabinet body and each other, which extend through the cabinet body to establish electrical connection between corresponding terminals of the network protector and the electrical distribution network. First and second doors are pivotably connected to opposing sides of the cabinet body and have respective contact surfaces to seal against the cabinet body. A first gasket is disposed along a distal edge surface of the first door, and a second gasket is disposed along a distal edge surface of the second door. At least a portion of the first gasket and the second gasket have conformal shapes that sealingly mate with each other when the first and second doors are in a closed position.

A network unit includes an enclosure having first and second compartments, plural input terminals, and a primary switch having an input and an output, the input being electrically connected to the input terminals. The output of the primary switch is electrically connected to the input of a network transformer. A network protector includes an input, an output and a circuit breaker electrically connected between the input and the output of the network protector. The network protector input is electrically connected to the network transformer output. Plural circuit protection devices are electrically connected between the network protector output and plural output terminals. The circuit breaker is substantially enclosed by the second compartment. The network transformer, the primary switch and part of the network protector are enclosed by the first compartment.

A system includes an electrical enclosure having an inner volume and a door structured to open to expose the inner volume and structured to close to enclose the inner volume. A racking mechanism is disposed in the inner volume and includes a member movable in a first direction to a first position and an opposite second direction to a different second position. A network protector is carried by the racking mechanism and is movable thereby between a connect position in the inner volume corresponding to the first position of the member of the racking mechanism, and a test position in the inner volume corresponding to the different second position of the member of the racking mechanism. A control mechanism is structured to move the member of the racking mechanism between the first position and the different second position of the member responsive to a number of remote commands.

A drive circuit, such as an electronic trip device, is for a shunt trip coil of a network protector. The drive circuit includes an alternating current input adapted to receive an alternating current voltage and a first half-wave rectifier adapted to provide a plurality of direct current voltages from the alternating current input. An energy store, such as a plurality of electrolytic capacitors, is adapted to provide a first direct current output from the direct current voltages of the first half-wave rectifier. A sensor circuit monitors the alternating current input and the first direct current output and provides a second output from one of the alternating current input and the first direct current output. A second full-wave rectifier responds to the second output and the trip signal to provide a third direct current output adapted to drive the network protector shunt trip coil.

A retrofit assembly structured to allow a CM22 type circuit breaker to engage, and be enclosed by, a CMD type circuit breaker tank is provided. The retrofit assembly includes a levering mechanism, a circuit breaker bus assembly having bus support members, and a door handle system structured to allow a user to actuate the circuit breaker contacts when the tank is closed.

The invention relates to the technical field of motor protection mode in industrial production, The invention particularly relates to an intelligent monitoring and early warning system of motor protector based on internet of things and a method for monitoring motor protector according to the system. The original data of motor protector, including three-phase current, three-phase voltage, active power, active power and electric energy, running state and the like, are processed through DTU-4G module accord to Modbus-A TCP protocol upload data to a database on a cloud server for storage, At the same time, the system includes Web page, Android APP and IOS client program. Each client program reads the data from the database in the cloud server and pushes it to the user for viewing and processing, which provides great convenience for the on-site maintenance personnel.

A feeder power source for a network power system includes a network transformer having a delta three-phase primary winding and a three-phase secondary winding; a three-phase primary feeder electrically connected to the delta three-phase primary winding; a three-phase secondary bus electrically connected to the three-phase secondary winding; and a three-phase electrical switching apparatus structured to open and close the three-phase primary feeder. A network protector includes a network relay and a three-phase circuit breaker structured to open and close the three-phase secondary bus. A first circuit is electrically connected between at least one phase of the three-phase primary feeder and ground, and is structured to unbalance shunt impedance to the three-phase primary feeder ground. A second circuit detects a shift in system neutral and detects that the three-phase primary feeder is opened by the three-phase electrical switching apparatus.

A power supply for a control relay includes first and second voltage regulators having first and second operating ranges, respectively, and a switching mechanism. A rectified DC source voltage is provided to the first voltage regulator and the first voltage regulator converts it into a first DC voltage. The rectified DC source voltage is also provided to the switching mechanism which provides it to the second voltage regulator only when the switching mechanism is in a second condition. When the second voltage regulator receives the rectified DC source voltage, it converts it into a second DC voltage. The switching mechanism is adapted to be in a first condition when the rectified DC source voltage is greater than an upper threshold of the second operating range and in the second condition when the rectified DC source voltage is less than that upper threshold. At least one of the DC voltages is provided to the control relay.

An interface linkage assembly for a network protector is provided. The network protector includes a circuit breaker structured to move in and out of a housing assembly, and having a mechanical trip assembly and an electrical close assembly. The interface linkage includes a coupling device, a housing assembly portion and a rollout portion. The coupling device has a first component and a second component. The housing assembly portion is coupled to the coupling device first component. The rollout portion is coupled to the coupling device second component. The rollout portion is structured to be coupled to the mechanical trip assembly and the electrical close assembly, and further structured to move the mechanical trip assembly over a lesser arc and the electrical close assembly over a greater arc.

The invention discloses a superconducting link system, comprising a network adapter device, a network protector, an ultralow temperature vacuum multi-channel combined type Dewar, a high temperature superconduction wave filter, an ultralow temperature low-noise amplifier (LNA), a refrigerating system, a high-stability power supply system and an superconducting link intelligent monitoring system, wherein the high temperature superconduction wave filter and the ultralow temperature LNA are arranged in the ultralow temperature vacuum multi-channel combined type Dewar and operate in high vacuum environment with ultralow temperature and long-term holding pressure. In the superconducting link system, a brand new scientific overall structure design and a special manufacturing technology are adopted, thus the superconducting link system has extremely high out-band interference resisting capability and intermodulation interference reducing capacity, and can effectively reduce background noise of the system and improve gains for useful signals, thereby greatly enhancing the performance of a receiving link from an antenna to the output end of a receiver of a master station, greatly improving communication coverage, quality, capacity, user satisfaction, low-carbon and environmental-friendly network environment, and greatly increasing resource utilization rate of frequency spectrum and system equipment, return on investment, construction speed and the like.

A network protector that includes an enclosure, a frame assembly, a plurality of electrical components, including a circuit breaker, and an arc path assembly. The frame assembly is disposed within said enclosure. The plurality of electrical components is coupled to the frame assembly. The circuit breaker has at least one set of main contacts and at least one are chute associated with set of main contacts. The arc path assembly has a hollow member having at least one open end. The hollow member in fluid communication with the arc chute and the hollow member open end extends beyond said frame assembly. Thus, arc gasses traveling from the arc chute through the hollow member are exhausted into said enclosure.

A voltage sensing device automatically scales the source and network phase voltages of a power distribution system having one of two operating voltages for input to a network protector relay and also automatically scales a voltage for operating the trip and close circuit of the circuit breaker in the network protector. A latching tap select relay only switches the system voltages to the lower operating voltage input taps of step down transformers after a short delay if all the system voltages are in the lower operating range. A diagnostic circuit verifies proper switch position and voltages before closing output contacts to connect the scaled voltages to the relay and circuit breaker.

A power system for ultraviolet lighting includes a first network transformer structured to be powered from a first medium voltage power source and to output a first low voltage output; and a second network transformer structured to be powered from a second medium voltage power source and to output a second low voltage output. A first network protector inputs the first low voltage output of the first network transformer and outputs a third output. A second network protector inputs the second low voltage output of the second network transformer and outputs a fourth output. A spot network is powered from the third output of the first network protector and from the fourth output of the second network protector. A number of sag ride thru devices include an input powered from the spot network and an output structured to power a number of ultraviolet lights.

In an electric power distribution network power is provided via high voltage cables carrying large secondary distribution currents which are connected to various electrical components such as transformers and network protectors which detect and accommodate secondary network power flow and problems such as network component malfunctioning or failure, and dangerous operating conditions such as an out of phase current status within the three or four high voltage primary power conducting cables arranged in parallel to share the load. network protectors address, among other things, a voltage out of phase situation in the cables which can lead to dangerous interruption conditions and result in damage to, or destruction of, the power distribution network and safety to the general public. The present invention addresses the problems associated with a faulty or failed network protector which permits continuous reversal in the direction of power (current) flow. Isolation of the problem network protector is achieved by transferring its load to associated network protectors on the secondary network to allow for safe servicing, or removal and replacement, of the hung-up network protector. The inventive electric network protector protection system automatically accommodates either 120 volt or 277 volt network systems, and further contemplates an arrangement for safely and securely connecting the network protector isolator's bus bar to a temporary power cable connected to contactors which can isolate a defective network protector from its associated network transformer.

An improved electrical disconnect apparatus includes a set of spaced apart conductors and a removable conductive element that is structured to extend between the conductors and to complete at least a portion of an electrical circuit that includes the conductors. The electrical disconnect apparatus is situated between an electrical network and a network protector. The conductors and the conductive element which extends therebetween are situated within the interior of a support that is sealed in order to permit the electrical disconnect apparatus to be in a submerged environment during use. The conductive element is retained by a key interlock wherein the key that enables removal of the conductive element is stored on the network protector and is only made available to the technician when the network protector has been switched to an OFF condition.

The invention provides an Ethernet power supply input structure of wireless network protector. The Ethernet power supply input structure comprises a protector and a power supply source which is connected with an input terminal of the protector; and a cable is arranged between the protector and the power supply source. The Ethernet power supply input structure of the wireless network protector, according to the invention, has advantages of low cost, and convenient and simple use.