Settings Menu
Functions > Function Config
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
50BF CB Fail Enabled
Disabled
Disabled
Functions > Protection > 50BF > Gn 50BF-n
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
Element Enabled
Disabled
Disabled
Setting 0.05 to 2 ⋅ I
rated
, Δ 0.05 I
rated
0.2 ⋅
I
rated
I4 Setting 0.05 to 2 ⋅ I
rated
, Δ 0.05 I
rated
0.05 ⋅
I
rated
Delay 1 0.02 to 60 s, Δ 0.005 s 60 ms
Delay 2 0.02 to 60 s, Δ 0.005 s 120 ms
CB Fail outputs will be issued providing any of the 3 phase currents are above the setting or the current in the
fourth CT is above I4 setting for longer than the 50BF-n Delay setting, or for a mechanical protection trip
the circuit-breaker is still closed when the 50BF-n Delay setting has expired, indicating that the fault has
not been cleared.
If the 50BF CB Faulty input Input Config > Input Matrix > 50BF CB Faulty is energized when
a CB trip is given then Delay 1 and Delay 2 will be by-passed and the output given immediately.
IEC 61850 Functional Information Mapping
A50BFRBRF*.Mod
Information
50BF CB Fail Enabled (Function Config) x 0 1 1
Element Disabled 1 x 0 0
Element Inhibited x x 1 0
A50BFRBRF*.Mod.stVal 5 5 2 1
Device Annunciation ON/TRUE: 1
OFF/FALSE: 0
Irrelevant: x
IEC 61850 Value ON: 1
BLOCKED: 2
TEST: 3
TEST/BLOCKED: 4
OFF: 5
A50BFRBRF*.Health
Information
Device Healthy 0 1
6.1.5
6.1.6
Supervision Functions
6.1 50BF Circuit-Breaker Failure Protection – 3 Pole
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual 371
C53000-G7040-C014-1, Edition 11.2019
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