Arrangements for starting electric motors or dynamo-electric converters

HELECTRICITY H02Electric power H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

H02P1/00Arrangements for starting electric motors or dynamo-electric converters

H02P1/02Details H02P1/021Protection against "no voltage condition" H02P1/022Security devices H02P1/023Protection against sparking of contacts or sticking together H02P1/024Protection against simultaneous starting by two starting devices H02P1/025Protection against starting if starting resistor is not at zero position H02P1/026Means for delayed starting H02P1/027Special design of starting resistor H02P1/028wherein the motor voltage is increased at low speed, to start or restart high inertia loads H02P1/029Restarting H02P1/04Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter H02P1/06Manually-operated multi-position starters H02P1/08Manually-operated on/off switch controlling power-operated multi-position switch or impedances for starting a motor H02P1/10Manually-operated on/off switch controlling relays or contactors operating sequentially for starting a motor H02P1/12Switching devices centrifugally operated by the motor H02P1/14Pressure-sensitive resistors centrifugally operated by the motor H02P1/16for starting dynamo-electric motors or dynamo-electric converters H02P1/163for starting an individual reluctance motor H02P1/166Driving load with high inertia H02P1/18for starting an individual dc motor H02P1/20by progressive reduction of resistance in series with armature winding H02P1/22in either direction of rotation H02P1/24for starting an individual ac commutator motor H02P1/26for starting an individual polyphase induction motor H02P1/265Means for starting or running a triphase motor on a single phase supply H02P1/28by progressive increase of voltage applied to primary circuit of motor H02P1/30by progressive increase of frequency of supply to primary circuit of motor H02P1/32by star-delta switching H02P1/34by progressive reduction of impedance in secondary circuit H02P1/36the impedance being a liquid resistance H02P1/38by pole-changing H02P1/40in either direction of rotation H02P1/42for starting an individual single-phase induction motor H02P1/423by using means to limit the current in the main winding H02P1/426by using a specially adapted frequency converter H02P1/44by phase-splitting with a capacitor H02P1/445by using additional capacitors switched at start up H02P1/46for starting an individual synchronous motor H02P1/465for starting an individual single-phase synchronous motor H02P1/48by pole-changing H02P1/50by changing over from asynchronous to synchronous operation H02P1/52by progressive increase of frequency of supply to motor H02P1/54for starting two or more dynamo-electric motors H02P1/56simultaneously H02P1/58sequentially