Siemens siprotec 7SA522 User Manual

2.10 External direct and remote tripping
207
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.
2.10.2 Setting Notes
General 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.
2.10.3 Settings
2.10.4 Information List
Addr. Parameter Setting Options Default Setting Comments
2201 FCT Direct Trip ON
OFF
OFF Direct Transfer Trip (DTT)
2202 Trip Time DELAY 0.00 .. 30.00 sec; ∞ 0.01 sec Trip Time Delay
No. Information Type of In-
formation
Comments
4403 >BLOCK DTT SP >BLOCK Direct Transfer Trip function
4412 >DTT Trip L1 SP >Direct Transfer Trip INPUT Phase L1
4413 >DTT Trip L2 SP >Direct Transfer Trip INPUT Phase L2
4414 >DTT Trip L3 SP >Direct Transfer Trip INPUT Phase L3
4417 >DTT Trip L123 SP >Direct Transfer Trip INPUT 3ph L123
4421 DTT OFF OUT Direct Transfer Trip is switched OFF
4422 DTT BLOCK OUT Direct Transfer Trip is BLOCKED
4432 DTT TRIP 1p. L1 OUT DTT TRIP command - Only L1
4433 DTT TRIP 1p. L2 OUT DTT TRIP command - Only L2
4434 DTT TRIP 1p. L3 OUT DTT TRIP command - Only L3
4435 DTT TRIP L123 OUT DTT TRIP command L123

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English