摘要:
A centrally controlled protection system is provided. The system includes a plurality of circuit breakers, a plurality of modules, and a central computer. Each of the plurality of breakers are in electrical communication with a respective one of the plurality of modules. The central computer is in communication with each of the plurality of modules via a network. The central computer controls the plurality of circuit breakers in either a normal mode or a reduced energy let-through mode.
摘要:
A method and system for a power distribution system are provided. The method includes determining at a central controller normal mode configuration settings for a plurality of circuit breakers of the power distribution system and determining at the central controller alternate mode configuration settings for the plurality of circuit breakers of the power distribution system. The method further includes controlling with the central controller the operation of the plurality of circuit breakers based on the normal mode configuration settings and the alternate mode configuration settings.
摘要:
Fluid movers produce at least predominantly laminar flow internally in an axial or a radial direction in a rotor. A fluid mover rotor comprises a matrix of passages of appropriate size to produce at least predominantly laminar flow spaced circumferentially around the rotor. The passages may provide axial, radial or mixed flow. “Appropriate” dimensions may be selected for a specified volume flow rate. In a radial embodiment, a matrix of radially extending passages could comprise walls having an axial height projecting from an annular disk. The passages may be offset with respect to the radial direction to provide an angle of attack that minimizes incidence losses. The matrix structure allows the use of thin-walled passages to minimize blockage of entering air.
摘要:
An adapter for floor maintenance machine to secure an accessory pad to the brush carried by the machine. The adapter includes a mounting bracket attached to the backing plate of the brush within the central opening in the bristles, a circular support plate carried by the mounting bracket in an adjustably spaced position with respect to the bracket and a circular clamping plate adapted to fit over the support plate to clamp the accessory pad between the support plate and clamping plate. A plurality of pins may be provided for extending through the accessory pad to selectively lock same against radial movement with respect to the brush and a venting means may be provided for supplying air to the motor of the maintenance machine.
摘要:
A fluid mover includes a rotor to transfer momentum with a fluid when operated at a given volumetric flow rate through the rotor. The rotor includes a plurality of enclosed passages to transfer momentum in or out of the fluid as the fluid passes through the enclosed passages in response to rotation of the rotor. The passages are formed with a cross sectional shape and cross sectional dimensions along their entire length sufficient to establish and maintain laminar flow of the fluid along the entire length of the enclosed passages when the fluid is passing through the rotor at the given volumetric flow rate. The fluid mover also includes a housing having at least one inlet and at least one outlet for the fluid.
摘要:
Fluid movers produce at least predominantly laminar flow internally in an axial or a radial direction in a rotor. A fluid mover rotor comprises a matrix of passages of appropriate size to produce at least predominantly laminar flow spaced circumferentially around the rotor. The passages may provide axial, radial or mixed flow. “Appropriate” dimensions may be selected for a specified volume flow rate. In a radial embodiment, a matrix of radially extending passages could comprise walls having an axial height projecting from an annular disk. The passages may be offset with respect to the radial direction to provide an angle of attack that minimizes incidence losses. The matrix structure allows the use of thin-walled passages to minimize blockage of entering air.