IG-150-EN version 04; 03/10/16
116
Automation functions
General instructions
ekor.rps
5.1.6. Other operation characteristics
1. Recloser out of service
This state is reached by pressing the push-button R on the
keyboard, or control order. All relays related to the recloser
are de-excited.
2. Definitive trip
Apart from the already mentioned causes, this status is
reached by trip being the recloser locked.
3. Recloser locked
This state is reached by activation of input or logic
programmed as recloser locking. The cycle is not started in
it and it comes out, if it was already started, moving on to
definitive trip if the circuit breaker opens by a protection trip.
4. Busbar voltage monitoring
Optionally, if a digital input is programmed as “reference
voltage” and a busbar connected voltage relay is applied, a
function which prevents the breaker automatic closing will be
executed if the bus bar is de-energized. The use of this input
is optional. If no input is programmed as Vref, the recloser
automation does not count on the bus bar voltage condition
to perform a closing operation.
5. Manual operation during the cycle.
If during the operating cycle a manual order (or by command)
is given to the circuit breaker, the recloser aborts the cycle
and moves onto idle status.
6. Digital outputs related to recloser (and which can be
programmed as output relays):
a. Recloser in ongoing cycle. Active from the moment when
the circuit breaker opens by trip until the monitoring or
definitive trip status is reached.
b. Recloser locked. Active if the recloser is disengaged or if
the external recloser locking input is activated.
c. Closing (breaker closing order)
d. Definitive trip. Active while on that state
e. Cancellation of instantaneous. Active during the reclaim
time after an automatic closing. It can be used to block
other protections (externals)
8. Logic inputs related to the recloser, which can be
assigned to physical inputs:
a. Breaker status. This input is necessary for the recloser
operation
b. Reference voltage. It is not necessary. If it is programmed,
the recloser function demands to see closed that input to
carry out the reclosing; not, if it is not programmed
c. Recloser locking. As its name indicates, it inhibits this
automation. It is not necessary if it is not wished to use
the locking
d. External protection. It can cause the beginning of a
reclosing cycle if the reclosing enablings are set to "YES"
due to the "external protection" cause. It is not necessary
If the Syncrocheck function exists and if it
is enabled, it is required that such function
is giving closing permission, in order to
achieve the reclosing relay activation
5.2. Sequence coordination
This function aims that the recloser moves along the
reclosing sequence when he sees a fault being interrupted
by other recloser situated downstream, despite he does not
come himself to produce trips of its breaker.
If the coordination function is enable, the recloser will move
into running cycle when detecting a protection start-up
after a drop-out of the protection (instead of a trip as usual)
and from that moment it will count (cyclewise) the current
interruptions as own trips and the current reestablishment
as own reclosings.
So, in the case of two units in series, being the downstream
one programmed with tripping times shorter than the
upper one, in front of a permanent fault even lower situated,
the unit downstream is the one carrying out effectively the
tripping and reclosing operations, but the upper one is
following him in his same cycle status.
If, for example 3 high speed shots and 1 low speed shot have
been programmed for each one, the only one which will be
active, with the 4 shots, is the downstream one. If there is
no coordination, the downstream one would trip 3 times,
other 3 times the upper one and one more (and definitive)
the downstream one, so that the line section between both
units has been opened 3 times without reason.
The only setting related to this function is the enable YES/
NO. It can be found on the screen “recloser (1)”. By keyboard/
display, on the next level to “recloser”.
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