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10.32
67N Directional Earth Fault – Calculated
Reference
θ
set
Vmins
et
I
V
Operate Angle
Attribute
θ
Characteristic angle (I with respect to V)
op
Operating angle
Variation in charac-
teristic angle
Operate Threshold
Operate and Reset Time
t
op
t
reset
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
Parameter
Polarizing quantity
Characteristic angle setting
Minimum voltage setting
Applied current (for operate time)
Applied voltage
Forward
Reverse
-10 °C to +55 °C
f
± 5 %
rated
Attribute
Minimum operating voltage
Attribute
Value
Operate time
Typically 32 ms
< 40 ms at characteristic angle + 50/51 element operate time
Reset time
Typically < 65 ms at characteristic angle
10.32 67N Directional Earth Fault – Calculated
Value
V2, V0
-95° to +95°
0.33 to 3 V, Δ 0.5 V
0.1 ⋅ I
rated
1 ⋅ I
rated
0.1 ⋅ V
rated
1 ⋅ V
rated
Value
θ
, ± 5°
set
θ
- 85° ± 5° to θ
+ 85° ± 5°
set
set
(θ
- 180°) - 85° ± 5° to (θ
set
set
± 5 °
± 5 °
Value
> 0.33 V
Technical Data
- 180°) + 85 ° ± 5°
547
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