ABB REJ 527, Technical Reference Manual

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1MRS 750616-MUM Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual
REJ 527
Table 4.1.4.6-3 SGF2
Switch Function
Default
setting
SGF2/1 Automatic doubling of the set start value of stage I>>
• When the switch is in position 1, the set start value of the stage
will automatically be doubled at high inrush situations.
0
SGF2/2 Inverse-time operation of stage I
0
> inhibited by the start of stage
I
0
>>
• When the switch is in position 1, inverse-time operation is
inhibited.
0
SGF2/3 Inhibition of stage I
0
>> or U
0
>>
• When the switch is in position 1, the stage is inhibited
0
SGF2/4 The operation mode of the start indication of stage I
0
> or U
0
>
• 0 = the start indication will automatically be cleared once the fault
has disappeared
• 1 = latching. The start indication will remain active although the
fault has disappeared.
0
SGF2/5 The operation mode of the start indication of stage I
0
>> or U
0
>>
• 0 = the start indication will automatically be cleared once the fault
has disappeared
• 1 = latching. The start indication will remain active although the
fault has disappeared.
0
SGF2/6 The operation mode of the start indication of stage U
0b
>
• When the switch is in position 0, the start indication will
automatically be cleared once the fault has disappeared.
0
SGF2/7 Selection of the earth-fault current or the zero-sequence voltage
unit
• 0 = the unit operates with two I
0
-stages and a voltage deblocking
facility
• 1 = the unit operates as a three-stage zero-sequence voltage unit
0
SGF2/8 Selection of U
0
deblocking for the directional earth-fault protection
• 0 = U
0
deblocking is in use.
• 1 = U
0
deblocking is not in use.
0
Σ
SGF2 0