Setting Notes - Siemens SIPROTEC 7SA522 Manual

2.10.2 Setting Notes

General
2.10.3 Settings
Addr. Parameter
2201 FCT Direct Trip
2202 Trip Time DELAY
2.10.4 Information List
No. Information
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
7SA522 Manual
C53000-G1176-C155-3
On the receiver side, the local external trip function is used. The receive signal is
routed to a binary input which is assigned to the logical binary input function ´!'77
7ULS /µ. If single-pole tripping is desired, you can also use binary inputs ´!'77
7ULS /µ, ´!'77 7ULS /µ and ´!'77 7ULS /µ. Figure 2-92 therefore also
applies in this case.
A prerequisite for the application of the direct and remote tripping functions is that
during the configuration of the scope of functions in address  '77 'LUHFW 7ULS
= (QDEOHG was applied. At address  )&7 'LUHFW 7ULS it can also be switched
21 or 2)).
It is possible to set a trip delay for both the local external trip and the receive side of
the remote trip in address  7ULS 7LPH '(/$<. 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 70LQ 75,3 &0', which was set for the device in
general in address  (Subsection 2.1.3). Reliable operation of the circuit breaker is
therefore ensured, even if the initiating signal pulse is very short. This setting is only
®
possible via DIGSI at Additional Settings.
Setting Options
ON
OFF
0.00 .. 30.00 sec; ∞
Type of In-
formation
SP
SP
SP
SP
SP
OUT
OUT
OUT
OUT
OUT
OUT
2.10 External direct and remote tripping
Default Setting
OFF Direct Transfer Trip (DTT)
0.01 sec Trip Time Delay
Comments
>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
Comments
207