Description - GE ALPS Instruction Manual

1 PRODUCT DESCRIPTION
1.12 RECLOSER (OPTIONAL)
The optional recloser can be used with the ALPS alone, separately with an external relay system, or it can be used simulta-
neously with the ALPS and an external relay system. It can be used in single phase or three phase tripping applications to
provide up to 4 reclose attempts. When used in single phase tripping and reclosing applications, the recloser requires the
following inputs from the associated relays system(s):
1. A single-pole reclose input (1PRI) following tripping for single-line-to-ground faults
2. A three-pole reclose input (3PRI) following tripping for multi-phase faults.
The ALPS produces these inputs internally. The external relay system, if used, must be capable of producing the 1PRI and
3PRI signals as contact outputs for use as inputs into the recloser.
The recloser can be set to operate in one of the following modes (Protection Setting 1801: RECLMODE):
1. NONE – No reclosing is selected. The three-pole trip enable signal (see outputs) will not be set up at this time. This
mode should be selected when the ALPS recloser is not used.
2. INTERNAL – Reclosing will be controlled by the ALPS only. No external inputs will be recognized.
3. EXTERNAL – Reclosing will be controlled by external inputs (from other relays/systems) only. Inputs from the ALPS
will be ignored.
4. BOTH – Reclosing will be controlled by signals from the ALPS as well as external inputs (other relays / systems).
5. OFF – No reclosing, either by internal or external control, is allowed. The three phase trip enable output will be set up
at this time. This mode should be selected when automatic reclosing is disabled.
When reclosing is selected, the recloser can be set to operate in one of the following modes (Protection Setting 1802:
RECLTYPE):
1. 1POLE – Up to four reclosing attempts can be made following an initial single phase trip; there will be no reclosing fol-
lowing an initial three phase trip. The first reclosing attempt requires a 1PRI input thus indicating that single-pole trip-
ping was initiated. Each subsequent reclose (if used) requires a 3PRI signal. Following the initial single-pole reclose, a
three-pole trip enable signal will be issued so that if a fault is closed into, the relay system(s) will initiate three-pole trip-
ping of the breaker regardless of the fault type. This three-pole trip enable signal is issued internally to the ALPS, but it
must be programmed to drive one of the output relays for use with an external relay system, if such a relay system is
used with the recloser. Four separate timers are provided so that each of the reclosing attempts can be set with a dif-
ferent time if required. For proper operation of the recloser in the 1POLE program, the ALPS must be programmed for
single phase tripping (Protection Setting 1203: TRIPMODE = 1POL or 1POLZ2).
2. 3POLE – Up to four reclosing attempts (all three-pole) can be made following an initial three phase trip; there will be no
reclosing following an initial single phase trip. Each reclosing attempt requires a 3PRI signal indicating that three-pole
tripping was initiated. In this mode, the three-pole trip enable signal is issued at all times so that the relays will issue a
three-pole trip signal to trip all three poles of the breaker regardless of the fault type. This three-pole trip enable signal
is issued internally to the ALPS, but it must be programmed to drive one of the output relays for use with an external
relay system, if such a relay system is used with the recloser. Four separate timers are provided so that each of the
four reclosing attempts can be set with a different time if required. For proper operation of the recloser in the 3POLE
mode, the ALPS must be programmed for three phase tripping (Protection Setting 1203: TRIPMODE = 3POL).
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.
GE Power Management ALPS Advanced Line Protection System
1.12 RECLOSER (OPTIONAL)

1.12.1 DESCRIPTION

1.12.2 RECLOSING MODE
1.12.3 RECLOSING PROGRAMS
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