621.313.175.32 1 621.315 1 621.318 1 capacity 1 converter-fed motor 1 direct current 1 direct current flow 1 direct current motor 1 electrical equipment of traction network 1 electrical model 1 electromechanical analogy 1 explosion safety 1 explosive destruction 1 external automobile body repair straightening 1 fragment separation 1 magnetic flux 1 magnetic pulse attraction 1 multi-terminal direct current 1 overvoltage protection 1 photovoltaic power source 1 photovoltaic pump 1 power 1 rotation frequency 1 single-phase network of supply 1 solenoid 1 source of direct current 1 surge arrester 1 test procedure 1 transient stability constrained optimal power flow 1 water pump 1