7SR10 Description of Operation
©2018 Siemens Protection Devices Limited Chapter 1 Page 57 of 77
OUT OF SERVICE
IN SERVICE
79 In
79 Out
CB Closed
CB Open
79 Ext Trip
79 Ext Pickup
79 Trip (Inst, Delayed, HS)
SEQUENCE IN
PROGRESS
Trip Reset
&
Pickup Reset
&
CB Open
79 Auto-Reclose
ENABLE/DISABLE
DEADTIME
79 Block Reclose
INHIBIT CLOSE CB
CLOSE PULSE
RECLAIM
LOCKOUT
79 Out Of Service
79 InService
79 Lockout
79 Lockout
79 Reset Lockout
79 InProgress
79 Sequence Fail Timer
79 Num Shots
79 Elem Prot Trip n (Inst,
Delayed)
79 Elem Deadtime
79 Elem HS Trips to Lockout
79 Elem Delayed Trips to Lockout
79 CB Fail To Close
79 Close Onto Fault
CB Controls Latched
79 Retry Enable
79 Retry Attempts
79 Retry Interval
Close CB Pulse
Block Close CB
Reclaim Timer
79 Successful AR
79 Block Reclose AND 79 Reclose Blocked Delay Elapsed
Starter raised in Reclaim Time
Reclaim Time Elapsed
Lockout Reset
Sequence Fail Timer = Elapsed
Increment Close Count
Close Pulse Expired - Close CB
AR Started
= CB Closed
79 Elem Prot Trip n
LOCKOUT RESET
79 Minimum LO Delay
79 Reset LO by Timer
Manual Close
CB Closed
CB Failed to Close
CB Open at End of Reclaim Time, or Protection operation during final Reclaim Time
CB Close
Manual Close CB
Manual
Close
Close CB Delay
Elem Line Check Trip
Sequence Fail
79 Reclose Blocked Delay
79 Sequence Co-ord
Sequence Reclose ENABLED
&
STARTER picked up
&
STARTER reset
HS or Delayed Trips to Lockout = Count
Num Shots = Count
79 Trip & Reclose
79 Trip & Lockout
79 Line Check
Hot Line In
Hot Line Out
Last Trip to Lockout
Figure 4-2 Basic Auto-Reclose Sequence Diagram
Summary of Contents for 7SR10 Argus Series
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