Descriptors | Power transformers, Small-power transformers, Transformers, Electrical safety, Electric power systems, Electrical equipment, Toys, Isolating transformers, Rated voltage, Rated frequencies, Rated power, Classification systems, Portable, Stationary, Marking, Strength of materials, Electrical insulation, Electric enclosures, Temperature rise, Short-circuit currents, Overload protection, Safety devices, Flexible conductors, Short-circuit current tests |