Under Current - Siemens Argus 7SR21 Technical Manual

7SR220 Settings Guide
3.4.9.

Under Current

Description
Gn 37 U/I Guard Setting
3.4.9.1. 37-1
Description
Gn 37-1 Element
Phase under current element 37-1
Gn 37-1 Setting
Pickup level
Gn 37-1 Delay
Sets operate delay time
Gn 37-1 U/I Guarded
Selects whether to use the 37-1 guard element
Gn 37-1 Start Option
Selects whether 31-1 element operates for any phase picked
up or only when all phases are picked up
3.4.9.2. 37-2
Description
Gn 37-2 Element
Phase under current element 37-2
Gn 37-2 Setting
Pickup level
Gn 37-2 Delay
Sets operate delay time
Gn 37-2 U/I Guarded
Selects whether to use the 37-2 guard element
Gn 37-2 Start Option
Selects whether 31-2 element operates for any phase picked
up or only when all phases are picked up
3.4.9.3. 37G-1
Description
Gn 37G-1 Element
E/F under current element 37G-1
Gn 37G-1 Setting
Pickup level
Gn 37G-1 Delay
Sets operate delay time
3.4.9.4. 37G-2
Description
Gn 37G-2 Element
E/F under current element 37G-2
Gn 37G-2 Setting
Pickup level
Gn 37G-2 Delay
Sets operate delay time
Unrestricted Page 32 of 107
Range
0.05, 0.1 ... 4.95, 5
Range
Disabled, Enabled
0.05, 0.1 ... 4.95, 5
0, 0.01 ... 14300, 14400
No, Yes
All, Any
Range
Disabled, Enabled
0.05, 0.1 ... 4.95, 5
0, 0.01 ... 14300, 14400
No, Yes
All, Any
Range
Disabled, Enabled
0.005, 0.006 ... 4.995, 5
0, 0.01 ... 14300, 14400
Range
Disabled, Enabled
0.005, 0.006 ... 4.995, 5
0, 0.01 ... 14300, 14400
© 2013 Siemens Protection Devices Limited
Default
0.1 xIn
Default
Disabled
0.25 xIn
0 s
Yes
All
Default
Disabled
0.25 xIn
0 s
Yes
All
Default
Disabled
0.2 xIn
0 s
Default
Disabled
0.2 xIn
0 s