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2.3 PROTECTION SETTINGS
1.
NONE - no reclosing selected. The three-pole trip enable output is not enabled at this time.
2.
OFF - no internal or external reclosing allowed. The three-pole trip enable output (see outputs for details) will be
enabled at this time.
3.
INTERNAL - controlled by ALPS only.
4.
EXTERNAL - controlled by external relays only.
5.
BOTH - controlled by ALPS or external relays.
2
1802: RECLTYPE - Select Reclosing Type (Single Phase Tripping models only)
Set one of the following three reclosing types:
1.
1POLE - The first trip must be single-pole so that a 1PRI signal is supplied to the recloser to start the first reclose. If the
first trip is three-pole, the 3PRI signal will cause the recloser to go to lockout. When 1POLE reclosing is used, the
three-pole trip enable signal will be set after the first reclose signal is issued, but not until at least 30 milliseconds after
the 1PRI signal is removed from the recloser. The three-pole trip enable signal will be maintained until the recloser
resets or goes to lockout. This will insure that three-pole tripping will be initiated for any subsequent faults that may
occur during the remainder of the reclosing cycle. Up to three subsequent three-pole reclosures with independent time
delays can be selected (Protection Setting 1803: NUM1P). These subsequent reclosures will be started by an input
from the three-pole reclose initiate (3PRI) signal. This mode of operation requires four independent timers which here-
after will be referred to as 1PDELAY1, 1PDELAY2, 1PDELAY3 and 1PDELAY4 (Protection Settings 1804 to 1807).
2.
3POLE - The first trip must be three-pole so that a 3PRI signal is supplied to the recloser to start the first reclose. If the
first trip is single-pole, then the 1PRI signal will cause the recloser to go to lockout. All reclosures will be started by an
input from the three-pole reclose initiate (3PRI) signal. Up to four reclosures with independent time delays can be
selected (Protection Setting 1808: NUM3P). In this mode of operation, the three-pole trip enable signal will be set at all
times. This mode of operation requires four independent timers which hereafter will be referred to as 3PDELAY1,
3PDELAY2, 3PDELAY3 and 3PDELAY4 (Protection Settings 1809 to 1812).
3.
1POLE/3POLE - This mode of operation combines modes 1 and 2 above. If a 1PRI input is first applied to the recloser,
then the program by the 1POLE setting will be followed. On the other hand, if a 3PRI input is first applied to the
recloser then the program described by the 3POLE setting will be followed. This mode of operation uses the same tim-
ers described by the 1POLE and 3POLE settings respectively. The number of reclose attempts for the 1POLE and
3POLE programs are set independently by NUM1P and NUM3P (Protection Settings 1803 and 1808).
1803: NUM1P - Number of Attempts following Single-Pole Trip (Single Phase Tripping models only)
NUM1P establishes the number of reclosures attempted following a single-pole trip. It can be set as follows:
1.
one reclosing attempt (single-pole)
2.
two reclosing attempts (first is single-pole, second is three-pole)
3.
three reclosing attempts (first is single-pole, second and third are three-pole)
4.
four reclosing attempts (first is single-pole, second, third and fourth are three-pole)
Select a value suitable for the application.
1804: 1PDELAY1 - Single Pole First Reclose Delay (Single Phase Tripping models only)
1PDELAY1 establishes the delay to be used for the first single-pole reclose attempt following a single-pole trip. The delay
time can be set over a range of 0.1 to 300.0 seconds. Select a setting suitable for the application.
1805: 1PDELAY2 - Single Pole Second Reclose Delay (Single Phase Tripping models only)
1PDELAY2 establishes the delay to be used for the second reclose attempt following the initial single-pole trip (this will be
a three-pole reclose). The delay time can be set over a range of 0.1 to 300.0 seconds. Select a setting suitable for the appli-
cation.
1806: 1PDELAY3 - Single Pole Third Reclose Delay (Single Phase Tripping models only)
1PDELAY3 establishes the delay to be used for the third reclose attempt following the initial single-pole trip (this will be a
three-pole reclose). The delay time can be set over a range of 0.1 to 300.0 seconds. Select a setting suitable for the appli-
cation.
2-42
ALPS Advanced Line Protection System
2 CALCULATION OF SETTINGS
GE Power Management
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