Siemens 7SR51 - Page 263

Functions > Protection > 51 > Gn 51-n
Parameter Setting Options Settings
Default Gn1 Gn2 Gn3 Gn4
Dir. Control
7
Non-Dir
Forward
Reverse
Non-Dir
Setting 0.05 to 2.5 ⋅ I
rated
, Δ 0.01
I
rated
1 ⋅ I
rated
Char DTL
IEC-NI
IEC-VI
IEC-EI
IEC-LTI
ANSI-EI
ANSI-MI
ANSI-VI
IEC-NI
Time Mult (IEC/ANSI) 0.01 to 1.6, Δ 0.01
1.6 to 5, Δ 0.1
5 to 100, Δ 1
1
Delay (DTL) 0 to 20 s Δ 0.01 s 5 s
Min Operate Time 0 to 20 s Δ 0.01 s 0 s
Follower DTL 0 to 20 s Δ 0.01 s 0 s
Reset IEC/ANSI Decaying
0 to 60 s Δ 1 s
0 s
VTS Action
7
Off
Inhibit
Non-Dir
Off
81HB2 Inhibit No
Yes
No
79 Delayed Inhibit No
Yes
No
21LB-3P Inhibit
7
No
Yes
No
21LB-1P Inhibit
7
No
Yes
No
51V Multiplier
7
0.25 to 1 Δ 0.05 0.5
Functions > Protection > 51 > Gn 51CL-n
Parameter Setting Options Settings
Default Gn1 Gn2 Gn3 Gn4
Element Enabled
Disabled
Disabled
Setting 0.05 to 2.5 ⋅ I
rated
, Δ 0.01
I
rated
1 ⋅ I
rated
7
Applies only to devices with VT inputs.
Protection and Automation Functions
5.17 51 Time-Delayed Overcurrent – Phase
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 263
C53000-G7040-C014-1, Edition 11.2019