index
Three phases oil immersed transformer...................... pag1
Three phases cast resin transformers......................... pag2
Three phases dry type transformers........................... pag3
Bibliography and correspondence of the norms........... pag4

Three phases Dry type transformers rated voltage up to V 500

primary voltage up to Kv 3
secondary voltage up to Kv 1
insulation class up to Kv 3
frequency Hz 50
core with oriented grain, insulated with carlite
HV and LV copper windings
connecting terminal:
- Weidmuller type (up to KVA 50)
- by bakelite with brass bolts (from KVA 50 to KVA 100)
- by copper plate (over KVA 100)
iron feet
lifting lugs
earthing terminal
finishing touch by red insulating paint
name plat

double primary voltage
double secondary voltage
frequency Hz 60
sheet screen between primary and secondary windings
air cable box
cooling fans (from KVA 630)

Three phases Dry type transformers rated voltage up to V 220 / 380

primary voltage up to Kv 3
secondary voltage up to Kv 1
insulation class up to Kv 3
frequency Hz 50
core with oriented grain, insulated with carlite
HV and LV copper windings
connecting terminal:
- Weidmuller type (up to KVA 50)
- by bakelite with brass bolts (from KVA 50 to KVA 100)
- by copper plate (over KVA 100)
iron feet
lifting lugs
earthing terminal
finishing touch by red insulating paint
name plat

double primary voltage
double secondary voltage
frequency Hz 60
sheet screen between primary and secondary windings
air cable box
cooling fans (from KVA 630)