Siemens 7SR10 Argus Series, Manual

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7SR10 Description of Operation
©2018 Siemens Protection Devices Limited Chapter 1 Page 55 of 77
If the Lockout command is received while a Manual Close operation is in progress, the feature is immediately
locked-out.
Once the Lockout condition has been reached, it will be maintained until reset. The following will reset lockout: -
• By a Manual Close command, from fascia, comms or Close CB binary input.
• By a 79 Reset Lockout binary input, provided there is no signal present that will cause
Lockout.
• At the end of the
79 Minimum LO Delay
time setting if
79 Reset LO by Timer
is selected to
ENABLED , provided there is no signal present which will cause Lockout.
• Where Lockout was entered by an A/R Out signal during an Autoreclose sequence then a
79
In signal must be received before Lockout can reset.
•
By the
CB Closed
binary input, provided there is no signal present which will cause Lockout.
The Lockout condition has a delayed drop-off of 2s. The Lockout condition can not be reset if there is an active
lockout input.
4.1.5
P/F Shots sub-menu
This menu allows the Phase fault trip/reclose sequence to be parameterized:-
79 P/F Prot’n Trip1 The first protection Trip in the P/F sequence can be set to either Inst or Delayed.
79 P/F Deadtime 1 Sets the first Reclose Delay (Dead time) in the P/F sequence.
79 P/F Prot’n Trip2 The second protection Trip in the P/F sequence can be set to either Inst or Delayed.
79 P/F Deadtime 2
Sets the second Reclose Delay (Dead time) in the P/F sequence.
79 P/F Prot’n Trip3 The third protection Trip in the P/F sequence can be set to either Inst or Delayed.
79 P/F Deadtime 3
Sets the third Reclose Delay (Dead time) in the P/F sequence.
79 P/F Prot’n Trip 4 The fourth protection Trip in the P/F sequence can be set to either Inst or Delayed.
79 P/F Deadtime 4 Sets the fourth Reclose Delay (Dead time) in the P/F sequence.
79 P/F Prot’n Trip5 The fifth and last protection Trip in the P/F sequence can be set to either Inst or
Delayed .
79 P/F HighSet Trips to Lockout Sets the number of allowed HighSet trips. The relay will go to Lockout on the
last HighSet Trip. This function can be used to limit the duration and number of high
current trips that the Circuit Breaker is required to perform, if the fault is permanent
and close to the Circuit Breaker then there is no point in forcing a number of Delayed
Trips before the Relay goes to Lockout – that sequence will be truncated.
79 P/F Delayed Trips to Lockout Sets the number of allowed Delayed trips, Relay will go to Lockout on the last
Delayed Trip. This function limits the number of Delayed trips that the Relay can
perform when the Instantaneous protection Elements are externally inhibited for
system operating reasons - sequences are truncated.
4.1.6
E/F Shots sub-menu
This menu allows the Earth Fault trip/reclose sequence to be parameterized:-
As above but E/F settings.
4.1.7
SEF Shots sub-menu
This menu allows the Sensitive Earth trip/reclose sequence to be parameterized:-
As above but SEF Settings, Note: - SEF does not have HighSets
4.1.8
Extern Shots sub-menu
This menu allows the External Protection auto-reclose sequence to be parameterized:-
79 P/F Prot’n Trip1 Not Blocked/Blocked - Blocked raises an output which can be mapped to a Binary
output to Block an External Protection’s Trip Output.
79 P/F Deadtime 1
Sets the first Reclose Delay (Deadtime) for the External sequence.