ABB RELION REX640, Техническое руководство, Страница: 1176 / 1960

Figure 667: Functional module diagram
Timer
The duration of the
TRIP
output signal from TRPPTRC can be adjusted with the
Trip
pulse time setting when the "Non-latched" operation mode is used. The pulse length
should be long enough to secure the opening of the breaker. For three-pole tripping,
TRPPTRC has a single input
OPERATE
, 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
TRPPTRC is provided with possibilities to activate a lockout. When activated, the
lockout can be manually reset after checking the primary fault by activating the
RST_LKOUT
input or from the LHMI clear menu parameter. When using the "Latched"
mode, the resetting of the
TRIP
output can be done similarly as when using the
"Lockout" mode. It is also possible to reset the "Latched" mode remotely through a
separate communication parameter.
The minimum pulse trip function is not active when using the "Lockout"
or "Latched" modes but only when the "Non-latched" mode is selected.
The
CL_LKOUT
and
TRIP
outputs can be blocked with the
BLOCK
input.
Table 1123: Operation modes for the TRPPTRC 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 clear-
ing is possible.
Lockout
TRIP
is locked and can be cleared only locally
via menu or the
RST_LKOUT
input.
Protection related functions 1MRS759142 F
1176 REX640
Technical Manual