Resiglas Dry type transformers should be placed at the proper distance from room's walls for good insulation and ventilation and also for free space for staff. For transformers without housing ( IP-00) placed in special electric rooms the minimum distances
between coils, leads or other “hot” parts and walls or earthing elements should be as follows:
Insulation Level(kV) Solid Wall(mm) Net Wall(mm)
7.2 100 300
12.0 150 300
17.5 200 300
24.0 250 300
36.0 350 400
These distances ensure also good ventilation. Moreover, transformers setting should make possible easy access of staff to transformer's terminals. If there are two or more transformers placed in one room, a minimum distance between the transformers should be the same as to solid wall.
