ABB REU 523 Technical Reference Manual page 58

REU 523 Combined Overvoltage and Undervoltage Relay 1MRS 750942-MUM
Technical Reference Manual
SGB1 .......................................................................................................... 26
SGF1...SGF4 .............................................................................................. 23
SGR1...SGR8 ....................................................................................... 26, 47
Signal diagram ........................................................................................... 13
Signal outputs (SO1, SO2) ....................................................... 11, 46, 49, 51
SPA bus communication protocol.............................................................. 33
Switchgroups............................................................................................... 21
T
Technical data ............................................................................................ 50
Technical data on protection functions ...................................................... 28
Time/voltage characteristics....................................................................... 17
U
Undervoltage unit....................................................................................... 15
W
Weighting factor......................................................................................... 22
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