Settings Menu - Siemens Reyrolle 7SR5 Manual

Settings Example
When a CT fails, the current levels seen by the protection become unbalanced, however this condition would
also occur during a system fault.
Following a CT failure, if 1 or 2 of the 3 phases falls below the CT supervision setting the element will operate
subject to a time delay to prevent operation for transitory effects.
Operation of other protection function elements can be inhibited using output logic signals, however opera-
tion of the 60CTS-I function may not inhibit high speed protection functionality. User settings are to be consid-
ered.
A 3-phase CT failure is considered so unlikely (these being independent units) that this condition is not tested
for.

Settings Menu

6.2.5
Functions > Function Config
Parameter
60CTS CT Supervision
Functions > Supervision > 60CTS > 60CTS-I
Parameter
Element
Setting
Delay (DTL)
Functions > Supervision > 60CTS > 60CTS-I
Parameter
Element
Inps
Vnps
Delay (DTL)
Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019
Range
Enabled
Disabled
Range
Enabled
Disabled
0.05 to 2 ⋅ I , Δ 0.05 ⋅ I
rated rated
0.03 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
Range
Enabled
Disabled
0.05 to 1 ⋅ I , Δ 0.05 ⋅ I
rated rated
7 to 110 V, Δ 1 V
0.03 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
Settings
Default Gn1 Gn2
Disabled
Settings
Default Gn1 Gn2
Disabled
0.05 ⋅
I
rated
10 s
Settings
Default Gn1 Gn2
Disabled
0.1 ⋅
I
rated
10 V
10 s
Supervision Functions
6.2 60CTS CT Supervision
Gn3 Gn4
Gn3 Gn4
Gn3 Gn4
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