
E0-TR
Simplified protection device for small transformers

E1-TR
Two-winding transformer differential protection and control device

E2-TR
Two-winding transformer differential protection and control device (with phase-voltage measurement added)

E3-TR
Two-winding transformer differential protection with automatic voltage regulator

E4-TR
Three-winding transformer differential protection

E5-TR
Three-winding transformer differential protection and control device (with phase-voltage measurement added)

E6-TR
Three-winding transformer differential protection with intelligent voltage regulator

DV7500
Transformer protection with MV busbar automatic voltage regulator in accordance with ENEL specification