instrument voltage transformers till 420kV
1) DDB - capacitor voltage instrument transformers till 123kV
2) DFK - capacitor voltage transformers till 420kV
3) UTD-123 - inductive voltage instrument transformers till 123kV
4) UTD-245 - inductive voltage instrument transformers till 245kV
5) UTD-420 - inductive voltage instrument transformers till 420kV