Basler Electric BE1-BPR - Manual (Page 76)

4-24 BE1-BPR Functional Description 9272000990 Rev J
Recloser Outputs. There is a CLOSE output on O13 and diagnostic status flags for reclose fail and
lockout. Output O13 and the diagnostics for reclose fail and lockout can be programmed to drive output
relay contacts by using the LO and PDIAG commands.
The function of each output or flag is defined as:
CLOSE:
The reclose output contacts close at the end of each reclose time delay. They open
when the RESET input shows that the breaker has closed, when the reclose fail timer
times out, or when the recloser goes to LOCKOUT or the WAIT input is asserted.
RECLOSE FAIL: The reclose fail diagnostic flag is set when the reclose fail timer times out and
remains set until the recloser goes to the reset state.
LOCKOUT: The lockout flag is set when the recloser goes to LOCKOUT and remains set until the
recloser goes to the reset state. The recloser goes to LOCKOUT if more than the
maximum number of shots programmed is initiated before the recloser returns to the
reset state, if the Drive to Lockout (DTL) input is true, or if RECLOSE FAIL is true.
Reclosing Mode (TYPE). Reclosing mode controls the reclosing sequence on powerup. There are three
modes of operation and one is selected by setting the TYPE in the LR command to 0, 1, or 2.
TYPE 0 disables the reclosing function.
TYPE 1 requires that after power-up, the RESET input logic stay true for the reset time delay (TD79R) or
the recloser automatically goes to LOCKOUT.
TYPE 2 allows the recloser to initiate the first programmed reclose operation after power-up if power was
lost when the recloser was in the reset state and at power-up, the RESET logic is false and the START
logic is true. If RESET goes true and stays true for the reset time delay (TD79R), the recloser
automatically goes to RESET. This type of reclosing mode may be appropriate if the BE1-BPR relay is
powered-up from the station service.
Recloser Operation. There are a maximum of three reclose shots, each with a programmable time delay.
The three time delays can be set from 10 to 999 milliseconds in 1 milliseconds increments, 1 to 99
seconds in 0.1 second increments, or 100 to 600 seconds in 1 second increments. A setting of zero for
reclose shot 1, 2, or 3 will send the relay to lockout when that reclose shot is reached in the reclosing
sequence.
If the recloser is in the reset state upon receiving a START input signal (RI) and RESET is false (52a or
/52b), the reclose logic issues a reclose output (O13). The output occurs after the TD791 time delay
setting. If the breaker closes and then opens again before the reset timer is timed out, a reclose output
occurs after the second time delay. The third reclose output occurs in a similar manner. The recloser goes
immediately to the lockout state on the fourth breaker trip.
Reset timer (TD79R) begins timing out when the RESET logic becomes true (breaker closes). The reset
timer is reset when the breaker trips. If the reset timer times out while the breaker is closed, the recloser
goes to the reset state. Setting the reset time delay at zero will give an instantaneous reset and eliminate
reclose shots 2 and 3 from the reclose sequence.
If enabled, the reclose fail timer (TD79F) starts whenever a reclose output is given and stops when the
RESET logic indicates the breaker has closed. It is used to limit the duration of the reclose output signal.
If the reclose fail timer times out before the RESET logic becomes true, the recloser sets the reclose fail
diagnostic flag. The reclose fail function can be inhibited by setting the RECLOSE FAIL time delay
(TD79F) to zero (0).
If the total reclosing time between reset states exceeds the maximum reclose cycle timer (TD79M) setting
(excluding time while in the WAIT state), the recloser goes to the lockout state. The lockout alarm
diagnostic flag is set whenever the recloser goes to the lockout state. A time delay setting of zero will
inhibit the maximum reclose timer functions.
NOTE
After the programmable logic is changed or the time delay settings are changed,
the recloser initializes as described in the Reclosing Mode, TYPE 1 or TYPE 2.