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Current instrument bushing transformer CTT 25

Current instrument bushing transformer CTT 25

CTT 25
CTT 25 variant

Current instrument transformers CTT 25 are designed for measurement and protection of high voltage distributing equipment for indoor design for the highest voltage of system of 25 kV.

The value of secondary current is 5 A or 1 A with the possibility of combination. The accuracy classes for the circuits of measurement are 0.2, 0.5, 0.2S, 0.5S, 1, 3, for the circuits of protection are 5P, 10P and PX. The transformers fulfill the required accuracy class at intervals from 25 % to 100 % of rated load.