ABB RELION REF615R, Technical Manual

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input
TRIP
, through which all trip output signals are routed from the protection functions
within the protection relay, or from external protection functions via one or more of the
protection relay's binary inputs. The function has a single trip output
TRIP
for connecting
the function to one or more of the protection relay's binary outputs, and also to other
functions within the protection relay requiring this signal.
The
BLOCK
input blocks the
TRIP
output and resets the timer.
Lockout logic
The
CL_LKOUT
and
TRIP
outputs can be blocked with the
BLOCK
input.
Table 259: Operation modes for the 86/94 trip output
Mode Operation
Non-latched The Trip pulse length parameter gives the minimum
pulse length for
TRIP
Latched
TRIP
is latched ; both local and remote clearing is
possible.
Lockout
TRIP
is locked and can be cleared only locally via
menu or the
RST_LKOUT
input.
5.3.5 Application
All trip signals from different protection functions are routed through the trip logic. The
most simplified application of the logic function is linking the trip signal and ensuring that
the signal is long enough.
The tripping logic in the protection relay is intended to be used in the three-phase tripping
for all fault types (3ph operating). To prevent the closing of a circuit breaker after a trip,
86/94 can block the 52 closing.
86/94 is intended to be connected to one trip coil of the corresponding circuit breaker. If
tripping is needed for another trip coil or another circuit breaker which needs, for example,
different trip pulse time, another trip logic function can be used. The two instances of the
PTRC function are identical, only the names of the functions, 86/94-1 and 86/94-2, are
different. Therefore, all references made to only 86/94-1 apply to 86/94-2 as well.
The inputs from the protection functions are connected to the
TRIP
input. Usually, a logic
block OR is required to combine the different function outputs to this input. The
TRIP
output is connected to the binary outputs on the IO board. This signal can also be used for
other purposes within the protection relay, for example when starting the breaker failure
protection.
86/94 is used for simple three-phase tripping applications.
Section 5
1MRS240050-IB C
Protection-related functions
330 REF615R
Technical Manual