[ HIGH CURRENT ELECTRICAL POWER ENGINEERING APPARATUS AND INSTRUMENTS, NAMELY, TRANSFORMERS; ] TAP CHANGERS; ON-LOAD TAP CHANGERS; STEPPED TRANSFORMERS; STEP CHANGERS FOR TRANSFORMERS; POWER SWITCHES; AND DRIVERS AND ACTUATORS FOR TAP CHANGERS, ON-LOAD TAP CHANGERS, STEP CHANGERS AND POWER SWITCHES; LOW CURRENT ELECTRICAL APPARATUS, NAMELY, CONTROLLERS, REGULATORS AND MONITORS FOR TRANSFORMERS; TAP CHANGERS; ON LOAD TAP CHANGERS, STEPPED TRANSFORMERS; STEP CHANGERS FOR TRANSFORMERS, POWER SWI...

OFF-CIRCUIT TAP CHANGERS FOR THE REGULATION OF POWER TRANSFORMERS FOR HEAVY CURRENT NATIONAL AND INDUSTRIAL ENERGY DISTRIBUTION, ENERGY GRIDS AND POWER STATIONS

OFF-CIRCUIT TAP CHANGERS FOR THE REGULATION OF POWER TRANSFORMERS FOR HEAVY CURRENT NATIONAL AND INDUSTRIAL ENERGY DISTRIBUTION, ENERGY GRIDS AND POWER STATIONS