ABB REU 523 - Page 40

40
1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
Settings
1)
If the protection stage has been set out of operation, the number indicating the currently used value
will be displaced by “999” when parameters are read via the SPA bus and by dashes on the LCD.
Table 4.1.10.4-1 Settings
Variable
Actual
settings (R)
Group 1
(R, W, P)
Group 2
(R, W, P)
Setting range
Set start value of stage U> S1 S41 S81 0.60...1.40 x U
n
Operate time of stage U> S2 S42 S82 0.06...600 s
Time multiplier k> S3 S43 S83 0.05...2.00
Drop-off/pick-up ratio
D/P> of stage U>
S4 S44 S84 0.95...0.99
Set start value of stage U>>
S5
1)
S45 S85 0.80...1.60 x U
n
Operate time of stage U>> S6 S46 S86 0.05...600 s
Time multiplier k>> S7 S47 S87 0.05...2.00
Set start value of stage U< S8 S48 S88 0.30..1.20 x U
n
Operate time of stage U< S9 S49 S89 0.10...600 s
Time multiplier k< S10 S50 S90 0.10...2.00
Drop-off/pick-up ratio
D/P< of stage U<
S11 S51 S91 1.01...1.05
Set start value of stage U<<
S12
1)
S52 S92 0.30..1.20 x U
n
Operate time of stage U<< S13 S53 S93 0.10...600 s
Time multiplier k<< S14 S54 S94 0.10...2.00
Checksum, SGF1 S15 S55 S95 0...31
Checksum, SGF2 S16 S56 S96 0...255
Checksum, SGF3 S17 S57 S97 0...255
Checksum, SGF4 S18 S58 S98 0...63
Checksum, SGB1 S19 S59 S99 0...255
Checksum, SGR1 S20 S60 S100 0...15
Checksum, SGR2 S21 S61 S101 0...15
Checksum, SGR3 S22 S62 S102 0...15
Checksum, SGR4 S23 S63 S103 0...15
Checksum, SGR5 S24 S64 S104 0...15
Checksum, SGR6 S25 S65 S105 0...15
Checksum, SGR7 S26 S66 S106 0...15
Checksum, SGR8 S27 S67 S107 0...15
Operate time of CBFP - S121 S121 0.10...1.00 s
Time setting for disabling new
trip indications on the LCD
- S122 S122 0...999 min