ABB REU 523 - Page 25

1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
25
1)
Default setting
1RWH!
Only one type of characteristic can be selected at a time. If more than one switch is
selected, the characteristic with the lowest weighting factor of the selected switches
will be activated. This only applies to the overvoltage stages.
SGF3/5 The operation mode of the start indication of stage U<
• 0 = the start indication will automatically be cleared once the
fault has disappeared
• 1 = the start indication will remain active although the fault has
disappeared
0
SGF3/6 The operation mode of the trip indication of stage U<
• 0 = the trip indication will automatically be cleared once the fault
has disappeared
• 1 = the trip indication will remain active although the fault has
disappeared
1
SGF3/7 The operation mode of the start indication of stage U<<
• 0 = the start indication will automatically be cleared once the
fault has disappeared
• 1 = the start indication will remain active although the fault has
disappeared
0
SGF3/8 The operation mode of the trip indication of stage U<<
• 0 = the trip indication will automatically be cleared once the fault
has disappeared
• 1 = the trip indication will remain active although the fault has
disappeared
1
Σ SGF3 170
Table 4.1.4.6-5 SGF4: Time characteristics
SGF4/1 SGF4/2 SGF4/3 SGF4/4 SGF4/5 SGF4/6 SGF4/7 SGF4/8 Operation
00000000
Definite time
1)
10------U> A Curve
01------U> B Curve
--10----U>> A Curve
--01----U>> B Curve
- - - - 1 - - - U< C Curve
-----1--U<< C Curve
Table 4.1.4.6-4 SGF3
Switch Function
Default
setting