Functions
2.5 Distance Protection
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
174
2.5.3.3 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional Settings.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
1605 T1-1phase 0.00 .. 30.00 sec; ∞ 0.00 sec T1-1phase, delay for
single phase faults
1606 T1-multi-phase 0.00 .. 30.00 sec; ∞ 0.00 sec T1multi-ph, delay for multi
phase faults
1608 Iph>(Z1) 1A 0.05 .. 20.00 A 0.20 A Minimum current for Z1
only Iph>(Z1)
5A 0.25 .. 100.00 A 1.00 A
1615 T2-1phase 0.00 .. 30.00 sec; ∞ 0.30 sec T2-1phase, delay for
single phase faults
1616 T2-multi-phase 0.00 .. 30.00 sec; ∞ 0.30 sec T2multi-ph, delay for multi
phase faults
1617A Trip 1pole Z2 NO
YES
NO Single pole trip for faults in
Z2
1625 T3 DELAY 0.00 .. 30.00 sec; ∞ 0.60 sec T3 delay
1635 T4 DELAY 0.00 .. 30.00 sec; ∞ 0.90 sec T4 delay
1645 T5 DELAY 0.00 .. 30.00 sec; ∞ 0.90 sec T5 delay
1655 T1B-1phase 0.00 .. 30.00 sec; ∞ 0.00 sec T1B-1phase, delay for
single ph. faults
1656 T1B-multi-phase 0.00 .. 30.00 sec; ∞ 0.00 sec T1B-multi-ph, delay for
multi ph. faults
1657 1st AR -> Z1B NO
YES
NO Z1B enabled before 1st
AR (int. or ext.)
1665 T6 DELAY 0.00 .. 30.00 sec; ∞ 1.50 sec T6 delay
1701 Op. mode Z1 Forward
Reverse
Inactive
Forward Operating mode Z1
1702 ZR(Z1) 1A 0.050 .. 200.000 Ω 2.500 Ω ZR(Z1), Impedance Reach
5A 0.010 .. 40.000 Ω 0.500 Ω
1711 Op. mode Z2 Forward
Reverse
Inactive
Forward Operating mode Z2
1712 ZR(Z2) 1A 0.050 .. 200.000 Ω 5.000 Ω ZR(Z2), Impedance Reach
5A 0.010 .. 40.000 Ω 1.000 Ω
1721 Op. mode Z3 Forward
Reverse
Inactive
Reverse Operating mode Z3
1722 ZR(Z3) 1A 0.050 .. 200.000 Ω 5.000 Ω ZR(Z3), Impedance Reach
5A 0.010 .. 40.000 Ω 1.000 Ω
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