MEIDEN

ELECTRIC GENERATORS, ELECTRIC MOTORS, HOISTS AND CRANES

TRANSFORMERS; CIRCUIT BREAKERS, VACUUM CIRCUIT BREAKERS; VACUUM INTERRUPTERS, NAMELY, APPARATUS FOR INTERRUPTING ELECTRIC CURRENT IN A VACUUM CHAMBER; OIL INTERRUPTERS, NAMELY, APPARATUS FOR INTERRUPTING ELECTRIC CURRENT IN INSULATING OIL; VACUUM SWITCHES; DISCONNECTING SWITCHES; SWITCH BOARDS; CONTROL PANELS; AND SOLID INSULATED-, GAS INSULATED- AND OIL INSULATED-SWITCH GEARS; RELAYS AND DIGITAL PROTECTIVE RELAYS; RECTIFIERS; INVERTERS; ELECTRONIC FREQUENCY CONVERTERS; ELECTRONIC D.C. CONVERTERS; REVERSIBLE CONVERTERS; VARIABLE-SPEED CONTROLLERS; STATIC LEONARD EQUIPMENT NAMELY, ELECTRIC APPARATUS FOR THE CONTROL OF SPEED OF MOTORS BY CONSTANT VOLTAGE AND UTILIZING STATIC POWER CONVERTERS COMPOSED OF A SEMI-CONDUCTOR RECTIFIER SUCH AS A THYRISTER; SUPERVISORY REMOTE CONTROLLERS; REMOTE CONTROLLERS; TELEMETERS; TELEINDICATORS; DIGITAL TRANSMITTERS; UNIVERSAL SEQUENTAL CONTROLLERS; PROGRAMABLE CONTROLLERS; DYNAMOMETERS; CHASIS DYNAMOMETERS; DRIVE SIMULATORS; SEMI-CONDUCTORS; POWER SEMI-CONDUCTORS; SURGE ARRESTERS; SURGE ABSORBERS