Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Requirements and tests concerning pressurised corrugated tanks Ingestion-build-264231 Closed and adjustable flanged housings

Closed and adjustable flanged housings for series 3 sleeve type linear ball bearings

and twisted pair cables

additional habitable accommodation in the roof space constitutes a storey of the house

resistance to corrosion (when sealed)

and other printing processes have been considered

Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Requirements and tests concerning pressurised corrugated tanks Ingestion-build-264231 Closed and adjustable flanged housings1 Scope This Part 4 of EN 50464 series is applicable to test procedures to verify the mechanical withstand capability of the corrugated tanks of completely oil filled and hermetically sealed distribution transformers. NOTE Variations of oil temperature due to variations of ambient temperature and loading, result in deformation of tank walls.