Settings; Information Overview - Siemens siprotec 7SA522 User Manual

Functions

6.15.3 Settings

Addr. Setting Title
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 CON-
TACT
3921 End Flt. stage
3922 T-EndFault
3931 PoleDiscrepancy
3932 T-PoleDiscrep.

6.15.4 Information Overview

F.No. Alarm
1401 >BF on
1402 >BF off
6-214
The delay time 73ROH'LVFUHS (address  ) determines how long a breaker
pole discrepancy condition of the feeder circuit breaker, i.e. only one or two poles
open, may be present before the pole discrepancy supervision issues a three-pole trip
command. This time must clearly be longer than the duration of a single-pole
automatic 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.
Setting Options
ON
OFF
0.05..20.00 A
NO
YES
0.00..30.00 sec
0.00..30.00 sec
0.00..30.00 sec
0.00..30.00 sec
NO
trips with T1-trip-signal
trips with T2-trip-signal
trips with T1 and T2-trip-
signal
NO
YES
ON
OFF
0.00..30.00 sec
ON
OFF
0.00..30.00 sec
The indicated secondary current values for setting ranges and default settings refer to
I = 1 A. For the nominal current 5 A these values are to be multiplied by 5.
N
>BF: Switch on breaker fail protection
>BF: Switch off breaker fail protection
Default Setting
ON Breaker Failure Protection is
0.10 A Pick-up threshold I>
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 defective
bkr.
NO Trip output selection with defec-
tive bkr
YES Check Breaker contacts
OFF End fault stage is
2.00 sec Trip delay of end fault stage
OFF Pole Discrepancy supervision
2.00 sec Trip delay with pole discrepancy
Comments
Comments
7SA522 Manual
C53000-G1176-C119-2