Siemens Reyrolle 7SR46 - Instantaneous Earth Fault - Derived

50N Instantaneous Earth Fault – Derived
Table 4-4 Reference
Operation Non-directional
Elements Derived earth fault
Setting range I
set
0.2 ⋅ I
s
to 20.0 ⋅ I
s
Time delay 0 s to 600 s
Table 4-5 Operate and Reset Level
Operate level I
op
100 % I
set
, ± 5% or ± 2 % ⋅ I
s
Reset level ≥ 90 % I
op
or I
set
‑ 4 % ⋅ I
s
Variation (-10 °C to +60 °C) ≤ 5%
Table 4-6 Operating Time and Resetting Time
Basic operate time (with auxiliary power/load current) 1.2 ⋅ I
set
: 40 ms, ±15 ms,
2 ⋅ I
set
: 35 ms, ±15 ms
Operate time following delay t
basic
+ t
delay
, ±1 % or ±10 ms
Variation (-10 °C to +60 °C) ≤ 5%
Inhibited by Binary input or inrush current detector
Disengaging time < 50 ms with auxiliary power supply
4.3
Technical Data
4.3 50N Instantaneous Earth Fault – Derived
64 Reyrolle, 7SR46 Device, Manual
C53000-G7040-C103-1, Edition 10.2022