ABB REU 523 - Page 58

58
1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
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