Extern Shots; Synchronising Check - Siemens Argus 7SR21 Technical Manual

Description
Gn 79 SEF Prot'n Trip 5
Selects whether the fifth sensitive earth fault trip is
Instantaneous or Delayed. When set to Delayed all SEF Inst
Trips will be Inhibited for this shot.
Gn 79 SEF Delayed Trips To Lockout
Selects how many Delayed trips are allowed before going to
Lockout
3.11.2.4.

Extern Shots

Description
Gn 79 Extern Prot'n Trip 1
Selects whether the first external trip is Instantaneous or
Delayed
Gn 79 Extern Deadtime 1
Time period between the fault being cleared and the close
pulse being issued
Gn 79 Extern Prot'n Trip 2
Selects whether the second external trip is Instantaneous or
Delayed
Gn 79 Extern Deadtime 2
Time period between the fault being cleared and the close
pulse being issued
Gn 79 Extern Prot'n Trip 3
Selects whether the third external trip is Instantaneous or
Delayed
Gn 79 Extern Deadtime 3
Time period between the fault being cleared and the close
pulse being issued
Gn 79 Extern Prot'n Trip 4
Selects whether the fourth external trip is Instantaneous or
Delayed
Gn 79 Extern Deadtime 4
Time period between the fault being cleared and the close
pulse being issued
Gn 79 Extern Prot'n Trip 5
Selects whether the fifth external trip is Instantaneous or
Delayed
Gn 79 Extern Trips To Lockout
Selects how many external trips are allowed before going to
Lockout
3.11.3.

Synchronising Check

Description
Gn 25 Sync Voltages
Gn 25 Dead Line
Gn 25 Live Line
Gn 25 Dead Bus
Gn 25 Live Bus
Gn 25 Line U/V
Gn 25 Line Undervolts
Gn 25 Bus U/V
Gn 25 Bus Undervolts
Gn 25 Voltage Diff
Unrestricted ©2018 Siemens Protection Devices Limited
Range
Inst, Delayed
1, 2, 3, 4, 5
Range
Not Blocked, Blocked
0, 0.1 ... 14300, 14400
Not Blocked, Blocked
0, 0.1 ... 14300, 14400
Not Blocked, Blocked
0, 0.1 ... 14300, 14400
Not Blocked, Blocked
0, 0.1 ... 14300, 14400
Not Blocked, Blocked
1, 2, 3, 4, 5
Range
V , V , V , V , V , V
an bn cn ab bc ca
0 % to 150 %
0 % to 150 %
0 % to 150 %
0 % to 150 %
Disabled, Enabled
0 % to 150 %
Disabled, Enabled
0 % to 150 %
Disabled, Enabled
7SR220 Settings Guide
Default
Delayed
5
Default
Not Blocked
5 s
Not Blocked
5 s
Not Blocked
5 s
Not Blocked
5 s
Not Blocked
5
Default
V
bn
20 %
90 %
20 %
90 %
Enabled
90%
Enabled
90%
Enabled
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