DIN EN 50588-1/A1:2018-10

This European Standard covers three-phase power transformers from 5 kVA up to 40000 kVA for indoor or outdoor continuous service, 50 Hz with two windings, with a highest voltage for equipment [1,1 kV < Um < 36 kV] and at least one of the windings having a highest voltage for equipment not below [3,6 kV]. It defines requirements related to electrical characteristics and design of three-phase medium power transformers. The following transformers are excluded from this European Standard: - transformers, which have no windings with highest voltage for equipment (Um) higher than 1,1 kV; - instrument transformers; - tractions transformers mounted on rolling stock; - starting transformers; - testing transformers; - welding transformers; - transformers for deep water submerged application; - medium Voltage (MV) to Medium Voltage (MV) interface transformers up to 5 MVA; - transformers for converter applications; - transformers for furnace applications; - transformers for offshore applications and floating offshore applications; - transformers for emergency installations; - transformers and auto-transformers for railway feeding systems; - earthing transformers; - explosion-proof and underground mining transformers.