DTT7031 – Transformer Differential Protection
Products family : Transformer Protection
Sector : Industry
The DTT 7031 is a biased threephase differential relay designed to protect high voltage transformers against internal faults. Its very rapid operation limits the damage due to short-circuits between phases, between turns on the same phase, or between windings and eart/ground if the earth/ground fault currents can attain relatively high values.
ANSI codes
87N – Ground fault differential relay