Siemens Reyrolle 7SR5 - 10.3 24 Overexcitation Protection

24 Overexcitation Protection
Common Settings
Reference
Parameter Value
Input selection
Definite Time Element (24DT)
Reference
Parameter Value
V/f
set
Setting 0.10 to 2 ⋅ V
rated
/f
rated
V/f Applied overexcitation (for operate time) 0.9 to 1.1 V/f
set
0.9 to 2 V/f
set
t
delay
Delay setting 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
Operate and Reset Level
Attribute
Value
V/f
op
Operate level 100 % ⋅ V/f
set
: ± 2 % or ± 0.02
Reset level ≥ 97 % of V/f
op
Repeatability ± 1 %
Variation IEC
60255-1
-10 °C to +55 °C ≤ 5 %
f
rated
± 5 % ≤ 5 %
Operate and Reset Time
Attribute
Value
t
basic
Element basic operate time 1.1 ⋅ V/f
set
: 400 ms ± 200 ms
2 ⋅ V/f
set
: 320 ms ± 200 ms
t
op
Operate time following delay t
basic
+ t
delay
± 1 % or ± 200 ms
Repeatability ± 1 %
Disengaging time < 250 ms
Inverse Time Element (24IT)
Reference
Parameter
Value
t
reset
Reset setting 0 to 1000 s, Δ 1 s
10.3
10.3.1
10.3.2
10.3.3
Technical Data
10.3 24 Overexcitation Protection
Reyrolle 7SR5, Transformer Protection Device, Device Manual 459
C53000-G7040-C015-1, Edition 11.2019