Applying The Function Parameter Settings; Settings; Information Overview - Siemens siprotec 7SA6 User Manual

Functions

6.10.2 Applying the Function Parameter Settings

6.10.3 Settings

Addr. Setting Title
2401 FCT SOTF-O/C
2404 I>>>

6.10.4 Information Overview

FNr. Meldung
4253 >BLOCK SOTF-O/C
4271 SOTF-O/C OFF
4272 SOTF-O/C BLOCK
4273 SOTF-O/C ACTIVE
4281 SOTF-O/C PICKUP
4282 SOF O/CpickupL1
4283 SOF O/CpickupL2
4284 SOF O/CpickupL3
4295 SOF O/CtripL123
6-158
A prerequisite for the operation of the switch-on-to-fault protection is that in address
 627) 2YHUFXUU = (QDEOHG was set during the configuration of the device
scope of functions (Section 5.1). It is furthermore possible to switch the function, in
address , 627) 2YHUFXUU 21 or 2)).
The magnitude of the current which causes pick-up of the switch on to fault function is
set as ,!!! in address . The setting value should be selected large enough to
ensure that the protection under no circumstances picks up due to an overload
condition or due to a current increase resulting from e.g. an automatic reclosure dead
time on a parallel feeder. It is recommended to set at least 2.5 times the rated current
of the feeder.
Note: The indicated secondary current values for setting ranges and default settings
refer to I = 1 A. For the nominal current 5 A the current values are to be multiplied
N
by 5.
Function
Instantaneous HighSpeed
SOTF Overcurrent
Instantaneous HighSpeed
SOTF Overcurrent
>BLOCK Instantaneous SOTF Overcurrent
SOTF-O/C is switched OFF
SOTF-O/C is BLOCKED
SOTF-O/C is ACTIVE
SOTF-O/C PICKED UP
SOTF-O/C Pickup L1
SOTF-O/C Pickup L2
SOTF-O/C Pickup L3
SOTF-O/C TRIP command L123
Setting Options
ON ON
OFF
1.00..25.00 A 2.50 A
Erläuterung
Default Setting
7SA6 Manual
C53000-G1176-C133-1