Recloser Inputs; Breaker Status; Single Pole Reclose Initiate (1Pri); Three Pole Reclose Initiate (3Pri) - GE LPS-D Instruction Manual

1 PRODUCT DESCRIPTION
3. 1POLE3POLE - If this mode of operation is selected, the recloser will operate as follows:
a) The program described under the 1POLE mode of operation will be followed if a single-pole reclose
initiate (1PRI) signal is received by the recloser thus indicating that a single-pole trip occurred.
b) The program described under the 3POLE mode of operation will be followed if a three-pole reclose
initiate (3PRI) signal is received by the recloser thus indicating that a three-pole trip has occurred.
The recloser settings (Protection Setting 1801: RECLTYPE) and the relay settings (Protection Setting
1203: TRIPMODE) must be compatible. Thus, if the LPS-D is set for single-pole tripping, then the
recloser must be set to 1POLE if single-pole reclosing only is to be used, or it must be set to
NOTE
1POLE3POLE if both modes of reclosing are to be used. If the LPS-D 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 LPS-D to trip three-pole regardless of the fault type, and the recloser will be immediately sent to
lockout following any trip. If the LPS-D 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 inde-
pendent time delay setting 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 (Protection Setting 1813: RESSETTIME; range: 0.1 to 300 seconds) 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 following 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 seconds) establishes the time
that the close contacts will remain closed when a reclose is called for by the recloser.
a) BREAKER STATUS
In order to function properly, the recloser requires breaker "b" auxiliary switches to determine whether the
breaker is in the open or closed position. Because all of the inputs to the LPS-D are programmable it is neces-
sary that the correct number of contact converter(s) 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 contact 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 LPS-D 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 pro-
grammed 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 LPS-D 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.
GE Power Management LPS-D Line Protection System
1.10 RECLOSER (OPTIONAL)

1.10.4 RECLOSER INPUTS

1
1-
43