Settings; Information Overview - Siemens SIPROTEC 7SA6 Manual

6.10.2 Applying the Function Parameter Settings

6.10.3 Settings

Addr. Setting Title
2201 FCT Direct Trip
2202 Trip Time DELAY

6.10.4 Information Overview

F.No. Alarm
4403 >BLOCK DTT
4412 >DTT Trip L1
4413 >DTT Trip L2
4414 >DTT Trip L3
4417 >DTT Trip L123
4421 DTT OFF
4422 DTT BLOCK
4432 DTT TRIP 1p. L1
4433 DTT TRIP 1p. L2
4434 DTT TRIP 1p. L3
4435 DTT TRIP L123
7SA6 Manual
C53000-G1176-C156-2
be used " >DTT Trip L1 ", " >DTT Trip L2 " and " >DTT Trip L3 ". Figure 6-90 there-
fore also applies in this case.
A prerequisite for the application of the direct and remote tripping functions is that dur-
ing the configuration of the scope of functions in the device (Section 5.1) the setting in
address 122 DTT Direct Trip = Enabled was applied. In address 2201 DTT Di-
rect Trip ON or OFF , it is furthermore possible to switch the function on or off.
It is possible to set a trip delay for both the local external trip and the receive side of
the remote trip in address 2202 Trip Time DELAY . This can be used as a security
time margin, especially in the case of local trip.
Once a trip command has been issued, it is maintained for at least as long as the set
minimum trip command duration TMin TRIP CMD , which was set for the device in
general in address 240A (Sub-section 6.1.1). Reliable operation of the circuit breaker
is therefore ensured, even if the initiating signal pulse is very short.
Setting Options
ON
OFF
0.00..30.00 sec; ∞
>BLOCK Direct Transfer Trip function
>Direct Transfer Trip INPUT Phase L1
>Direct Transfer Trip INPUT Phase L2
>Direct Transfer Trip INPUT Phase L3
>Direct Transfer Trip INPUT 3ph L123
Direct Transfer Trip is switched OFF
Direct Transfer Trip is BLOCKED
DTT TRIP command - Only L1
DTT TRIP command - Only L2
DTT TRIP command - Only L3
DTT TRIP command L123
Default Setting
OFF Direct Transfer Trip (DTT)
0.01 sec Trip Time Delay
Comments
Functions
Comments
6-161