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METHOD OF PROTECTIONS,AND SEQUENCE OF MAKING AND INTERLOCKS OF DC ROLLING MILL DRIVES,ESPECIALLY OF HIGH POWER DRIVES SUPPLIED FROM THYRISTOR INVERTERS WITH TWO-ZONE CONTROL OF MOTOR SPEED
METHOD OF PROTECTIONS,AND SEQUENCE OF MAKING AND INTERLOCKS OF DC ROLLING MILL DRIVES,ESPECIALLY OF HIGH POWER DRIVES SUPPLIED FROM THYRISTOR INVERTERS WITH TWO-ZONE CONTROL OF MOTOR SPEED