ABB RET 541 Product Manual page 57

Transformer Terminal
Q
Q
Fig. 12 Transformer in block connection with a generator. The transformer terminal RET 543 is used for
overall differential protection. An earthing resistor is recommended for the generator. Generator
protection functions are divided for two REM 543 machine terminals (A and B). The current injec-
tion device REK 510 is used in the rotor earth-fault protection scheme.
RET 541, RET 543, RET 545
D
D
D
1MRS755543
57