ABB REU 523 Technical Reference Manual page 25

1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
Table 4.1.4.6-4 SGF3
Switch Function
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
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
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
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
Σ SGF3
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
0 0 0
1 0 -
0 1 -
- - 1
- - 0
- - -
- - -
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.
0 0 0
- - -
- - -
0 - -
1 - -
- 1 -
- - 1
REU 523
Default
setting
0
1
0
1
170
0 0 1)
Definite time
- - U> A Curve
- - U> B Curve
- - U>> A Curve
- - U>> B Curve
- - U< C Curve
- - U<< C Curve
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