Settings - Siemens SIPROTEC 7SD610 Manual

The delay time T-PoleDiscrep. (address 3932) indicates how long a circuit breaker pole discrepancy con-
dition of the feeder circuit breaker, i.e. only one or two poles open, may be present before the pole discrepancy
supervision issues a 3-pole trip command. This time must be clearly longer than the duration of a 1-pole auto-
matic reclose cycle. The time should be less than the permissible duration of an unbalanced load condition
which is caused by the unsymmetrical position of the circuit breaker poles. Conventional values are 2 s to 5 s.
2.13.3

Settings

The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
Addr. Parameter
3901 FCT BreakerFail
3902 I> BF
3903 1p-RETRIP (T1)
3904 T1-1pole
3905 T1-3pole
3906 T2
3907 T3-BkrDefective
3908 Trip BkrDefect.
3909 Chk BRK CONTACT
3912 3I0> BF
3913 T2StartCriteria
3921 End Flt. stage
3922 T-EndFault
3931 PoleDiscrepancy
3932 T-PoleDiscrep.
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
C Setting Options
ON
OFF
1A 0.05 .. 20.00 A
5A 0.25 .. 100.00 A
NO
YES
0.00 .. 30.00 sec; ∞
0.00 .. 30.00 sec; ∞
0.00 .. 30.00 sec; ∞
0.00 .. 30.00 sec; ∞
NO
with T1-trip
with T2-trip
w/ T1/T2-trip
NO
YES
1A 0.05 .. 20.00 A
5A 0.25 .. 100.00 A
With exp. of T1
Parallel withT1
ON
OFF
0.00 .. 30.00 sec; ∞
ON
OFF
0.00 .. 30.00 sec; ∞
2.13 Circuit Breaker Failure Protection
Default Setting
ON Breaker Failure Protection
0.10 A Pick-up threshold I>
0.50 A
YES 1pole retrip with stage T1
(local trip)
0.00 sec T1, Delay after 1pole start
(local trip)
0.00 sec T1, Delay after 3pole start
(local trip)
0.15 sec T2, Delay of 2nd stage
(busbar trip)
0.00 sec T3, Delay for start with de-
fective bkr.
NO Trip output selection with
defective bkr
YES Check Breaker contacts
0.10 A Pick-up threshold 3I0>
0.50 A
Parallel withT1 T2 Start Criteria
OFF End fault protection
2.00 sec Trip delay of end fault pro-
tection
OFF Pole Discrepancy supervi-
sion
2.00 sec Trip delay with pole dis-
crepancy
Functions
Comments
193