51Sef-2; 51Sef-3 - Siemens Argus 7SR21 Technical Manual

7SR220 Settings Guide
Description
Gn 51SEF-1 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Gn 51SEF-1 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not
DTL selection)
Gn 51SEF-1 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
Gn 51SEF-1 Min Operate Time
Minimum operate time of element.
Gn 51SEF-1 Follower DTL
Additional definite time added after characteristic time
Gn 51SEF-1 Reset
Selects between an ANSI decaying reset characteristic or DTL
reset
Gn 51SEF-1 VTS Action
Selects whether 51SEF-1 element is blocked or made non-
directional when VTS operates
3.4.6.2.

51SEF-2

Description
Gn 51SEF-2 Element
Selects whether the 51SEF-2 IDMTL derived Earth Fault
element is enabled
Gn 51SEF-2 Dir. Control
Selects whether 51SEF-2 element is non-directional, forward
or reverse
Gn 51SEF-2 Setting
Pickup level
Gn 51SEF-2 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Gn 51SEF-2 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not
DTL selection)
Gn 51SEF-2 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
Gn 51SEF-2 Min Operate Time
Minimum operate time of element.
Gn 51SEF-2 Follower DTL
Additional definite time added after characteristic time
Gn 51SEF-2 Reset
Selects between an ANSI decaying reset characteristic or DTL
reset
Gn 51SEF-2 VTS Action
Selects whether 51SEF-2 element is blocked or made non-
directional when VTS operates
3.4.6.3.

51SEF-3

Description
Gn 51SEF-3 Element
Selects whether the 51SEF-3 IDMTL derived Earth Fault
element is enabled
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Range
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
(ANSI) Decaying, 0 ... 59, 60
Off, Inhibit, Non-Dir
Range
Disabled, Enabled
Non-Dir, Forward, Reverse
0.005, 0.006 ... 0.995, 1
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-
LTI, ANSI-MI, ANSI-VI, ANSI-EI
0.025, 0.03 ... 1.595, 1.6 , 1.7 ...
4.9, 5, 6 ... 100
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
0, 0.01 ... 19.99, 20
(ANSI) Decaying, 0 ... 59, 60
Off, Inhibit, Non-Dir
Range
Disabled, Enabled
© 2013 Siemens Protection Devices Limited
Default
IEC-NI
1
5 s
0 s
0 s
0 s
Off
Default
Disabled
Non-Dir
0.2 xIn
IEC-NI
1
5 s
0 s
0 s
0 s
Off
Default
Disabled