Class 323/256 - With motor driven tap switch

Subclass of Class 323 - Electricity: power supply or regulation systems
Definition: Subject matter wherein the means to select between the several
No. of patents: 37
Last issue date: 06/08/2010

Number	Title	Issue Date
7733069	Power converting apparatus and power generating apparatus AC module makers must prepare two types of AC modules for the 100-V and 200-V outputs only for domestic supply. For foreign countries, the makers must manufacture AC modules compatible with more system voltages. To solve these problems, the control circuit of an AC ...	06/08/2010
7595614	Load tap changer A load tap changer includes a single mechanical switch that is movable to create, in a first position, a first conducting path between a first transformer tap and a load. When the switch is in a second position, the switch creates a second conducting path between a ...	09/29/2009
7463010	Multipoint switch The invention relates to a multipoint switch for continuously switching different coil branches of a step-down transformer. According to said invention, at least one torque motor associated to various drive configurations carries out different driving functions for ...	12/09/2008
7417411	Apparatus and method for monitoring tap positions of load tap changer A load tap changer (LTC) having a plurality of windings is coupled to one of the primary and secondary windings of a power transformer in order to regulate the output voltage of the power transformer. The LTC includes a plurality of taps physically and electrically ...	08/26/2008
7319309	Load tap change monitoring system and method A system and method for remotely monitoring load tap changes on utility-type equipment are disclosed. In one example embodiment, a sensor measures a voltage before a tap change and compares the measured voltage to a voltage after the tap change. From this informatio...	01/15/2008
7253538	Method of supplying electric power from shore to ship and system thereof A method and a system of supplying electric power from shore to a ship with generators 60, 61, the ship being berthed in port include: a first step of synchronizing the electric power 11 from shore with electric power from the generators 60, 61,...	08/07/2007
7235891	Power system having generator driven by engine An apparatus for controlling the operation of power conditioners (10) for supplying the generated power to an external power system such as a commercial power system, in which power conditioners (10) are interconnected to an external power system, the ...	06/26/2007
7158042	Voltage regulator for physically remote loads The invention relates to a voltage regulator for physically remote loads (2) with an adjustable power supply (9) for the load (2), with a measurement device (11, 12) assigned to the load (2) for creating a digital measurement signa...	01/02/2007
7154251	Dual controlled output voltage, anti-saturation, auto-transformer circuit methodology An apparatus for selectively stepping up/down the voltage applied from an input to any load in an alternating current power system. The apparatus includes an auto transformer having a series winding with a plurality taps for the selection of different output load vo...	12/26/2006
7084590	Booster and motor controller A voltage sensor (101) is connected to output terminals (P, N) of a booster. The voltage sensor (101) detects a boosted voltage, and outputs the detected voltage to a first drive controller (102). The first drive controller (102) outputs ...	08/01/2006
7080449	Method and a connector arrangement for connecting and disconnecting a generator to a circuit with an existing alternating current A method and a connector arrangement for connecting and disconnecting an electrical generator, such as a prime mover driven alternator (10), to a circuit with an existing alternating current such as the mains electricity supply (20). ...	07/25/2006
7049795	Underload tapchanging voltage regulators for ease of field replacement and for improved operator safety Under load tapchanging voltage regulators with source and load connections, series and shunt transformers, switching devices for causing selectable levels of electric power to flow in either direction between the series and shunt transformers, and tapchanger control...	05/23/2006
7023193	Elimination of potential transformer in ANSI Type A voltage regulator An ANSI Type A voltage regulator that eliminates the need for a potential transformer is disclosed. A control unit finds an output voltage by constantly monitoring the input voltage across the utility windings and the stored tap position. The value of the output vol...	04/04/2006
6909586	Circuit breaker voltage sensing module A combined current and voltage sensor includes: a combined sensor shell; a current sensor located in the combined sensor shell, the current sensor disposed proximate to said first load strap; and a first voltage sensor located in the combined sensor shell, the first...	06/21/2005
6529858	Method of controlling step switches A method of controlling a step switch. From the measured values of current, voltage and phase angle at an electric drive motor during actuation of the step switch the individual picked-up active output is calculated. From the active output the correspondi...	03/04/2003
6472850	Method and apparatus for determining voltage regulator tap position A method for dynamically determining tap position in a step voltage regulator is disclosed. A present tap position is determined and the value of an applied voltage across a tap changing mechanism is measured. Based upon the value of the applied voltage, ...	10/29/2002
6100674	Method of monitoring a tap changer A method of monitoring a tap changer in which measured values representing the status of the tap change operation are associated with positions of the tap changer and the position range or time range for the tap change is subdivided into partial intervals...	08/08/2000
5952739	Remotely operated meter disconnect switch Multiple pairs of stationary and moveable contacts are toggled simultaneously between an open and closed position to disconnect or connect a meter from or to a line power source, by a reciprocating operator driven by low power clock motor. The operator is...	09/14/1999
5920467	Power converter for converting AC shore power to shipboard use A power converter for converting shore power voltage, phase, and frequency for shipboard use includes a variable inductance input transformer that can be connected to the shore power. The primary windings of the transformer have a plurality of taps, and a...	07/06/1999
5804953	Power converter for converting AC shore power to shipboard use A power converter for converting shore power voltage, phase, and frequency for shipboard use includes a variable inductance input transformer that can be connected to the shore power. The primary windings of the transformer have a plurality of taps, and a...	09/08/1998
5804954	Analog based tap position detector An tap changer for a voltage regulator including a tap positionable to vary the winding ratio of the transformer in response to changes in an electric load on the transformer is disclosed herein. The transformer includes a potentiometer mechanically coupl...	09/08/1998
5773970	Tap changer with tickler coil for arcless tap changing A tap changer in which a pair of selector contacts can be jointly movable or individually movable to engage stationary tap contacts of an array and one of the selector contacts is in series with a tickler coil and switchover resistor connected to one fixe...	06/30/1998
5633580	Direct load current sensing for predicted regulator tap position A tap changer including a tap positionable to vary the winding ratio of the transformer in response to changes in an electric load on the transformer is disclosed herein. The transformer includes an electric drive which is responsive to raise or lower sig...	05/27/1997
5619121	Load voltage based tap changer monitoring system A tap changer including a tap positionable to vary the winding ratio of the transformer in response to changes in an electric load on the transformer is disclosed herein. The transformer includes an electric drive which is electrically powered to selectiv...	04/08/1997
5528110	Apparatus for control of load power consumption An improved voltage reduction apparatus specifically designed to overcome implementation problems of a prior art voltage reduction apparatus. The present invention is designed to overcome the problem of magnetic field flux induced harmonic distortion and ...	06/18/1996
5428551	Tap changer monitor apparatus and method A monitor is provided for use with an AC voltage regulator having a number of taps including a neutral tap and a tap changer capable of activating any of the taps. The voltage regulator receives an input voltage and produces an output voltage and is const...	06/27/1995
4673850	Universal motor control system An electrical control means useful in systems wherein a motor, such as a blower motor for an air handling unit, must be run at different speed levels and wherein low voltage power must simultaneously be supplied to another part of the system such as a con...	06/16/1987
4672298	Power factor correction system A power-factor correction system for reactive power control and concomitant power factor correction adapted to cooperate with a line supplying power at a given line voltage from a power generator to an inductive load via a given path, includes a reactive ...	06/09/1987
4554502	Power factor correction system A power factor correcting system for compensating a lagging power factor reactance for an electric load plurality fed from at least one pair of incoming service lines, comprising, in combination: capacitors for producing leading reactive power; a series t...	11/19/1985
4540931	Variable transformer and voltage control system A system for automatically controlling output voltage to correct for varying input voltage utilizes a transformer having a movable core structure. The output voltage from the transformer is sensed and made to conform to a predetermined standard by moving ...	09/10/1985
4540934	Device for the fine adjustment of the output voltage of multi-phase regulating transformers A multi-phase regulating transformer is disclosed having a plurality of windings cooperating with stepping trolleys which are driven by a common driving member. To obtain fine adjustment of the output voltage, the trolleys are coupled to the driving membe...	09/10/1985
4438387	Turn-on control system for voltage drop compensators A turn-on control system for series variable transformer type voltage drop compensators comprising a voltage corrective variable compensating winding in combination with a voltage sensing main control to sense the voltage deviations of the utility's incom...	03/20/1984
4434388	Electrical lighting controller The following specification discloses an electrical power controller that has been specifically directed toward the control of lighting. The invention is directed toward reducing electrical energy consumption of high intensity discharge (HID) lamps and fl...	02/28/1984
4413189	Demand reduction system for regulated electric utility distribution circuits A circuit for automatically introducing a component of negative resistance line drop compensation into the control circuitry of a conventional voltage regulator to reduce the regulated voltage level on and, consequently, the load current level in a single...	11/01/1983
4384247	Under-load switching device particularly adapted for voltage regulation and balance An under-load switching device particularly adapted for use with a transformer having voltage taps for voltage regulation and for balancing the phase voltages in a multi-phase AC power system includes a pair of rotary tap selectors connected in parallel t...	05/17/1983
4336490	Voltage sensing apparatus for a voltage regulating transformer An automatic voltage regulating transformer is provided which incorporates a potential transformer electrically disposed across its series windings, and a set of sensing windings disposed across its shunt windings to provide a voltage sensing network whic...	06/22/1982
4323838	RMS Controlled load tap changing transformer A circuit for controlling a load tap changing transformer including a true RMS to D.C. converter for regulating the output of the transformer as a function of the RMS voltage....	04/06/1982

PatentStorm

Bizarre Patents

PatentStorm News

Class 323/256 - With motor driven tap switch