Recloser Inputs - GE ALPS Instruction Manual

1.12 RECLOSER (OPTIONAL)
The recloser settings (Protection Setting 1802: RECLTYPE) and the relay settings (Protection Setting 1203: TRIP-
MODE) must be compatible. If the ALPS is set for single-pole tripping, then the recloser must be set to 1POLE if
1
NOTE
single-pole reclosing only is to be used, or it must be set to 1POLE3POLE if both modes of reclosing are to be
used. If the ALPS is set for single-pole tripping and the recloser is set to 3POLE, then the recloser will issue the
three-pole trip enable signal to tell the ALPS to trip three-pole regardless of the fault type, and the recloser will be
immediately sent to lockout following any trip. If the ALPS is set for three-pole tripping and the recloser is set to the
1POLE type, then the recloser will go to lockout following any trip, regardless of the fault type.
One to four reclose attempts may be selected for each of the reclosing modes. For 1POLE3POLE, the number of 1POLE
and 3POLE reclose attempts may be set independently. Each of the reclose attempts has an independent time delay set-
ting with a range of 0.1 to 300.0 seconds. The reclose delay time begins when the recloser receives either a single pole
reclose initiate signal (1PRI), or a three pole reclose initiate signal (3PRI).
The reset time setting (RESETTIME) establishes the time that the recloser will wait before going to reset following:
• Programmed reclose attempt . If there are no faults following any of the programmed reclosures, then the recloser will
go to the reset state at the end of the reset time delay. If a fault is closed into or occurs during the reset time and there
is a subsequent reclosure programmed, then the recloser will produce an output to reclose the breaker following the
time delay associated with the next programmed reclose. If a fault is closed into or occurs during the reset time follow-
ing the last programmed reclose attempt, then the recloser will go immediately to lockout.
• Manual close . With this operation, the recloser starts from the lockout state, therefore, if a fault is closed into or occurs
during the reset time, then the recloser will remain in the lockout state. If there are no faults, then the recloser will go to
the reset state at the end of the reset time delay.
The dwell time setting (Protection Setting 1814: DWELLTIME; range: 0.1 to 2.0 s) establishes the time that the close con-
tacts will remain closed when a reclose is called for by the recloser.
a) BREAKER STATUS
The recloser requires breaker "b" auxiliary switches to determine whether the breaker is in the open or closed position.
Because all ALPS inputs are programmable, the correct number of contact converter(s) must be programmed for use as
the breaker "b" switch inputs. In three-pole tripping schemes, only one "b" switch input is required, therefore only one con-
tact converter need be programmed for that input. In single-pole tripping schemes, three "b" switch inputs are required (one
for each phase), therefore three contact converters must be programmed for those inputs.
b) SINGLE POLE RECLOSE INITIATE (1PRI)
The 1PRI input starts the single-pole reclosing mode. The ALPS provides this input directly to the recloser. If the recloser is
set to operate for EXTERNAL or BOTH, then one of the contact converter inputs must be programmed to accept this 1PRI
input, and the external relaying system must be capable of supplying it.
c) THREE POLE RECLOSE INITIATE (3PRI)
The 3PRI input starts the three-pole reclosing mode of operation. The ALPS will provide this input directly to the recloser. If
the recloser is set to operate for EXTERNAL or BOTH, then one of the contact converter inputs must be programmed to
accept this 3PRI input, and the external relay system must be capable of supplying it.
d) HOLD
The hold input controls the reclose output when the hold feature is selected (Protection Setting 1815: HOLD = YES). This
feature allows an external contact to supervise the close output of the ALPS recloser. When the Hold feature is selected,
the recloser waits a preset time for a hold input (Protection Setting 1816: HOLDTIME, range 1 to 1000 s) at the end of a
programmed reclose time. If the hold input is applied during this delay, the reclose contacts initiate closing of the breaker. If
the hold input is not applied during the hold time delay, the recloser goes to lockout when the hold time ends. The hold input
can be programmed to accept either a normally closed or normally open contact. If a normally closed contact is used, then
the hold time will only start when a reclose is called for if the contact is open and will only be stopped to allow reclosing
when contact closes. Note that if the hold input contact is closed when a reclose is called for, then reclosing will be initiated
immediately (there will be no hold time). Conversely, if a normally open contact is used, then the hold time will only start
when a reclose is called for if the contact is closed and will only be stopped to allow reclosing when the contact opens. Note
that if the hold input contact is open when a reclose is called for, then reclosing will be initiated immediately (there will be no
hold time). Note that when the hold feature is selected (HOLD = YES), that it applies to all selected reclosures.
1-46 ALPS Advanced Line Protection System
1 PRODUCT DESCRIPTION

1.12.4 RECLOSER INPUTS

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