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H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
H02M7/54—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters
H02M7/58—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential
H02M7/62—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential with electromagnetically-operated vibrating contacts, e.g. chopper
F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
F25B31/00—Compressor arrangements
F25B31/02—Compressor arrangements of motor-compressor units
F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
F25B49/00—Arrangement or mounting of control or safety devices
F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems