9 electrical devices and instruments, namely electrical controllers, for power current engineering, specifically for transmission, transformation, storage, control and regulation; switchgears, off-circuit and on-load tap-changers having motor drives for their operation; electrical devices and instruments, namely electrical controllers, for the operation, control, regulation, supervision, testing and control of transformers, switchgears, tap-changers on transformers and motor drives, as well as for the securing and improvement of the power quality of public and industrial power supply systems, and for the influencing and compensation of supply; electrical devices and instruments, namely electrical controllers, for light current engineering, specifically for measurement, computing, control and regulation technology; above devices and instruments, namely electrical controllers, and computing programs for the operation, control, regulation, supervision, monitoring, testing and control of transformers, switchgears, tap-changers on transformers and motor drives, as well as for the securing and improvement of the power quality of public and industrial power supply systems, and for the influencing and compensation of supply; individual parts for the above devices and instruments