GE Power Management
ALPS Advanced Line Protection System
1-47
1 PRODUCT DESCRIPTION
1.12 RECLOSER (OPTIONAL)
1
e) RECLOSE CANCEL
The reclose cancel signal produces different effects depending on the recloser state when this signal goes ON.
•
In Reset, the recloser disregards any reclose initiate while Reclose Cancel is ON and stays in Reset.
•
During a reclose cycle, Reclose Cancel sends the recloser to Lockout.
•
Reclose Cancel waits until the dwell time has elapsed and the close relay has reset before sending the recloser to
Lockout.
•
In Lockout, the Reclose Cancel signal has no effect.
To use this feature, one of the contact converters must be programmed to accept the reclose cancel input.
f) LOCKOUT
The lockout input will immediately send the recloser to the lockout state. The recloser will remain in the lockout state as
long as the lockout input is present. When the lockout input is removed the recloser will:
1.
Go to the reset state if the breaker is closed.
2.
Remain in the lockout state if the breaker is open.
To use this feature, one of the contact converters must be programmed to accept the lockout input.
g) RESET
The reset input attempts to send the recloser from Lockout to Reset without counting the reset time. It will take the recloser
out of lockout if the breaker is closed (as indicated by the “b” switch status) but will be ignored and keep the recloser in lock-
out if the breaker is open. To use this feature, one of the contact converters must be programmed to accept the reset input.
1.12.5 RECLOSER OUTPUTS
All of the recloser outputs are programmable. To use any of these outputs externally, insure that an appropriate output relay
is assigned to each of the used outputs. Assignment can be made through ALPS-Link, Xpression Builder, or the keyboard.
The following outputs are provided:
a) CLOSE
The close output controls reclosing of the breaker. The dwell time setting (Protection Setting 1814: DWELLTIME) controls
the time that the output contacts remain closed following a close command from the recloser.
b) THREE POLE TRIP ENABLE
This output is enabled whenever a reclose cycle is started and maintained until the recloser resets. If the recloser goes to
lockout following an unsuccessful reclose cycle, then the three-pole trip enable output is maintained. If the recloser goes to
lockout for any other reason, then the three-pole trip enable output is set at that time. The three-pole trip enable output is
maintained as long as the recloser stays in the lockout mode.
Figure 1–26: THREE-POLE TRIP ENABLE OUTPUT
The three-pole trip enable output is also produced when Protection Setting 1802: RECLTYPE = 3POLE or when the
recloser is turned off (Protection Setting 1801: RECLMODE = OFF). This output is internally routed to the ALPS and
insures that three-pole tripping will be initiated for all faults (regardless of fault type) as long as the three-pole trip enable
output is maintained. If the recloser is used externally with another relay system, then the NOT of the three-pole trip enable
output must be programmed (as shown above) to drive a form “b” contact, so that the contact will be closed whenever the
three-pole trip enable output is produced, and will otherwise remain open.
A form “b” contact is required so that it will close and remain closed during the time that the recloser is in lockout, when
three-pole tripping is required. Similarly, the contact will also be closed when the recloser is turned OFF or if power is lost to
the recloser, both situations in which three-pole tripping is also required.
Lockout
RECLMODE = OFF
O R
RECLTYPE = 3POLE
Three- pole Trip
Enable
