GE LPS-D, Инструкция по эксплуатации

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LPS-D Line Protection System GE Power Management
1.10 RECLOSER (OPTIONAL) 1 PRODUCT DESCRIPTION
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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 LPS-D 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 sec.) at the end of a programmed reclose time. If the hold input is applied during this time
delay, then the reclose contacts operate to initiate closing of the breaker. If the hold input is not applied during
the hold time delay, then the recloser will go to lockout when the hold time ends. The hold input can be pro-
grammed to accept either a normally closed or a 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 fea-
ture is selected (HOLD = YES), that it applies to all selected reclosures.
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.
• During the DWELLTIME, reclose cancel waits until the dwell time has elapsed and the close relay has
reset and then sends 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.
If this feature is used, then 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 lockout if the breaker is open.
If this feature is to be used, then one of the contact converters must be programmed to accept the reset input.
1.10.5 RECLOSER OUTPUTS
All the outputs provided by the recloser are programmable. Therefore, if any of these outputs are to be used
externally, it must be insured that an appropriate output relay is assigned to each of the used outputs. Assign-
ment 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: DWELL-
TIME) controls the time that the output contacts remain closed following a close command from the recloser.