Undercurrent Earth Fault - Measured - Siemens 7SR51 Device Manual

Technical Data
10.7 37G Undercurrent Earth Fault – Measured
10.7 37G Undercurrent Earth Fault – Measured
Reference
I
set
I
t
delay
Operate and Reset Level
I
op
Operate and Reset Time
t
basic
t
op
510
Parameter
Setting
Applied current (for operate time)
Delay setting
Attribute
Operate level
Reset level
Repeatability
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
Value
0.005 to 5 ⋅ I
1.1 to 0.5 ⋅ I
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
≤ 105 % I
op
± 1 %
≤ 5 %
± 5 % ≤ 5 %
Value
0.5 ⋅ I : 50 ms ± 10 ms
set
t + t
basic delay
± 1 % or ± 10 ms
< 40 ms
< 60 ms
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
rated
(switched)
set
rated
± 1 %
± 1 % or ± 10 ms