ABB SPAC 536 C User Manual page 58

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If the control module is to carry out the final
trip, the following parameters are to be set:
Function
Final trip after AR from AR1 (0 or 1) S71
Final trip after AR from AR2 (0 or 1) S72
Final trip after AR from AR3 (0 or 1) S73
Final trip time after AR from AR1
Final trip time after AR from AR2
Final trip time after AR from AR3
Via the SPA bus the event codes E36...E38 of
the final trip can be read.
Event
Final trip after AR from AR1
Final trip after AR from AR2
Final trip after AR from AR3
The reclaim time, parameter S77, is the same for
all auto-reclose cycle. The setting range is
0.2...300.0 s. The auto-reclose function can be
set out of use or alerted with parameter S78.
Each auto-reclose cycle can be started by any of
the three start initiating signals AR1, AR2 and
AR3. The signals to start the auto-reclose cycles
are selected with the setting parameters Sx1...Sx3
via the SPA bus. If the setting Sx1 has the value
0, and signal AR1 becomes active the concerned
cycle is inhibited. The cycles are always per-
formed in the order 1, 2, 3, 4, 5 and final trip.
When the auto-reclose cycles are started by the
signal AR1, the control module provides the
CB opening command immediately, without a
preceding start delay. The starting signals AR2
and AR3 can be given separate starting times for
the separate auto-reclose cycles.
When lit the red LED marked O -> I on the
front panel indicates that an auto-reclose cycle is
in progress. The LED is lit when the starting
time has elapsed and goes out when a CB close
command is given. The output SIGNAL5 or 6
can be used to indicate that an auto-reclose cycle
is in progress. The output is selected with pa-
rameter S80 and it operates in parallel with the
LED indication.
The auto-relose function also carries out a final
trip of the circuit breaker if the last programmed
AR cycle also proves unsuccessful. The final trip
Para- function is selected with the setting parameters
meter S71, S72 and S73 for the start initiating signals
AR1, AR2 and AR3, in which case the auto-
reclose function uses the control module's con-
trol outputs for tripping.
S74 Final tripping by the auto-reclose module can
S75 be used when the start signals of the protection
S76 relay modules are used for initiating auto-rec-
losing. In this case the operation times of the
protection relay modules must be longer than
the corresponding trip time of the auto-reclose
function. Each start initiating signal has its own
trip delay, setting parameters S74...S76.
Code
Outputs SIGNAL5 or 6 can be used to indicate
E36 that the control module has given a final trip
E37 signal. The output is selected with parameters
E38 S81...S83 for the initiating signals AR1...AR3.
The length of the output pulse is the same as that
of the open pulse.
For its operation the auto-reclose programme
requires information about the circuit breaker
status. When a signal from one of the protection
relay modules requests starting of an auto-reclose
cycle, the status of the circuit breaker is checked.
If the circuit breaker is closed, an auto-reclose
cycle starts.
When the dead time of the cycle has elapsed, the
status of the circuit breaker is checked again. If
the CB is open a closing command is delivered.
Before the auto-reclose program opens or closes
the circuit breaker it checks the interlocking
program and if the operation is enabled the
command is executed. During the dead time the
closing of the circuit breaker is inhibited.
When an auto-reclose cycle (e.g. cycle 3) has
been performed, the cycle in question and all
previous cycles (cycle 1 and 2) will be blocked
for the reclaim time. During the reclaim time a
new start request after an unsuccessful cycle
automatically starts the following cycle that has
been programmed to start. The reclaim time
following the auto-reclose cycle is effective as
long as one of the protection relay modules
continues requesting starting.