Siemens Argus 7SR21 Technical Manual page 137

Description
Gn 51N-1 Inrush Action
Selects if the 51N-1 element is blocked from operating when 2nd
Harmonic Inrush Detector operates
3.4.3.2. 51N-2
Description
Gn 51N-2 Element
Selects whether the 51N-2 IDMTL derived Earth Fault element is
enabled
Gn 51N-2 Setting
Pickup level
Gn 51N-2 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
Gn 51N-2 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not DTL
selection)
Gn 51N-2 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
Gn 51N-2 Min Operate Time
Minimum operate time of element.
Gn 51N-2 Follower DTL
Additional definite time added after characteristic time
Gn 51N-2 Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
Gn 51N-2 Inrush Action
Selects if the 51N-2 element is blocked from operating when 2nd
Harmonic Inrush Detector operates
3.4.3.3. 50N-1
Description
Gn 50N-1 Element
Selects whether the DTL derived Earth fault element is enabled
Gn 50N-1 Setting
Pickup level
Gn 50N-1 Delay
Sets operate delay time
Gn 50N-1 Inrush Action
Selects if the 50N-1 element is blocked from operating when 2nd
Harmonic Inrush Detector operates
3.4.3.4. 50N-2
Description
Gn 50N-2 Element
Selects whether the DTL derived Earth fault element is enabled
Gn 50N-2 Setting
Pickup level
Gn 50N-2 Delay
Sets operate delay time
Gn 50N-2 Inrush Action
Selects if the 50N-2 element is blocked from operating when 2nd
Harmonic Inrush Detector operates
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Range
Off, Inhibit
Range
Disabled, Enabled
0.05, 0.06 ... 2.49, 2.5
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
Range
Disabled, Enabled
0.05, 0.06 ... 49.5, 50
0, 0.01 ... 14300, 14400
Off, Inhibit
Range
Disabled, Enabled
0.05, 0.06 ... 49.5, 50
0, 0.01 ... 14300, 14400
Off, Inhibit
7SR210 Settings Guide
Default
Off
Default
Disabled
0.5 xIn
IEC-NI
1
5 s
0 s
0 s
0 s
Off
Default
Disabled
0.5 xIn
0 s
Off
Default
Disabled
0.5 xIn
0 s
Off
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