Functions
6-158 7SA6 Manual
C53000-G1176-C133-1
6.10.2 Applying the Function Parameter Settings
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.
6.10.3 Settings
Note:
The indicated secondary current values for setting ranges and default settings
refer to I
N
= 1 A. For the nominal current 5 A the current values are to be multiplied
by 5.
6.10.4 Information Overview
Addr. Setting Title Function Setting Options Default Setting
2401 FCT SOTF-O/C Instantaneous HighSpeed
SOTF Overcurrent
ON
OFF
ON
2404 I>>> Instantaneous HighSpeed
SOTF Overcurrent
1.00..25.00 A 2.50 A
FNr. Meldung Erläuterung
4253 >BLOCK SOTF-O/C >BLOCK Instantaneous SOTF Overcurrent
4271 SOTF-O/C OFF SOTF-O/C is switched OFF
4272 SOTF-O/C BLOCK SOTF-O/C is BLOCKED
4273 SOTF-O/C ACTIVE SOTF-O/C is ACTIVE
4281 SOTF-O/C PICKUP SOTF-O/C PICKED UP
4282 SOF O/CpickupL1 SOTF-O/C Pickup L1
4283 SOF O/CpickupL2 SOTF-O/C Pickup L2
4284 SOF O/CpickupL3 SOTF-O/C Pickup L3
4295 SOF O/CtripL123 SOTF-O/C TRIP command L123
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