Settings Menu - Siemens Reyrolle 7SR5 Manual

Parameter: Pickup Option
•
Default setting: All
This setting defines whether pickup is initiated when an undercurrent condition is detected on Any phase
or is only initiated when an undercurrent is detected on All phases.
Parameter: Setting
•
Default setting: 0.25 x I
The setting to be appropriate to the respective application.
A pickup value of 10 % is a practicable value for fault indications of electrical machines.
Parameter: Delay
•
Default setting: 0 s
No specific recommendation is given: The setting to be appropriate to the respective application.
Parameter: UC Guard Inhibit
•
Default setting: Yes
Current elements can be blocked if all phase currents fall below setting.

Settings Menu

5.5.5
Functions > Function Config
Parameter
37 Undercurrent
Functions > Protection > 37 > Gn 37 Common
Parameter
UC Guard Setting
Functions > Protection > 37 > Gn 37-n
Parameter
Element
Setting
Delay
UC Guard Inhibit
Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019
(0.25 I )
n rated
Range
Enabled
Disabled
Range
0.05 to 5 I , Δ 0.05 I
rated rated
Range
Enabled
Disabled
0.05 to 5 I , Δ 0.05 I
rated rated
0 to 20 s Δ 0.01 s
20 to 100 s Δ 0.1 s
100 to 1000 s Δ 1 s
1000 to 10000 s Δ 10 s
10000 to 14400 s Δ 100 s
Yes
No
Protection and Automation Functions
5.5 37 Undercurrent Protection – Phase
Settings
Default Gn1 Gn2
Disabled
Settings
Default Gn1 Gn2
0.1 ⋅
I
rated
Settings
Default Gn1 Gn2
Disabled
0.25 ⋅
I
rated
1 s
Yes
Gn3 Gn4
Gn3 Gn4
Gn3 Gn4
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