Keywords:
Marking, Earthing, Single-phase transformers, Temperature-rise limit, Protected electrical equipment, Rated current, Grades (quality), Portable, Type testing, Resistance-welding equipment, Performance testing, Transformers, Environment (working), Thermal testing, Testing conditions, Electrical testing, High-voltage tests, Electrical insulation, Short-circuit current tests, Water-cooled systems, Ratings, Welding equipment, Rated voltage, Electrical resistance