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10.17
50N Instantaneous Earth Fault – Calculated
Reference
I
set
I
t
delay
Operate and Reset Level
I
op
Operate and Reset Time
t
basic
t
op
13
Requires VT inputs
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
Parameter
13
Directional control
Setting
Applied current (for operate time)
Delay setting
Attribute
Operate level
Reset level
Repeatability
Transient overreach (X/R ≤ 100)
Variation IEC
-10 °C to +55 °C
60255-1
f
rated
Attribute
Element basic operate time
Operate time following delay
Repeatability
Overshoot time
Disengaging time
10.17 50N Instantaneous Earth Fault – Calculated
Value
Non-Dir, forward, reverse
0.05 to 2.5 ⋅ I
2.55 to 25 ⋅ I
25.5 to 50 ⋅ I
0 to 2 ⋅ I
set
0 to 5 ⋅ I
set
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
1000 to 14400 s, Δ 100 s
Value
I
: ± 5 % or ± 1 % I
set
≥ 95 % I
op
± 1 %
≤ -5 %
≤ 5 %
± 5 %
≤ 5 %
Value
2 ⋅ I
: 40 ms ± 10 ms
set
5 ⋅ I
: 30 ms ± 10 ms
set
t
+ t
basic
delay
± 1 % or ± 10 ms
< 40 ms
< 50 ms
Technical Data
, Δ 0.01
rated
, Δ 0.05
rated
, Δ 0.5
rated
(switched)
(switched)
rated
± 1 % or ± 10 ms
527
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