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7SR11 & 7SR12 Performance Specification
2.3
32S Sensitive Power
Reference
2.3.1
Parameter
S
32S-n Setting
s
t
32S-n Delay setting
d
Operate and Reset Level
2.3.2
Attribute
S
Operate level
op
Reset level
Variation
Operate and Reset Time
2.3.3
Attribute
Element basic
t
basicE
operate time
t
Operate time following delay
op
Disengaging time
Operate Threshold
2.3.4
Attribute
Minimum levels for
operation
©2017 Siemens Protection Devices Limited
Over-power
Under-power
-10 °C to +55 °C
+ 2 Hz ≤ 5 %
f
– 3 Hz to f
nom
nom
Over-power
Under-power
I
V
Value
0.005...2 x Sn
0.00 ... 14400 s
Value
100 % Ss, ± 5% or ± 2% Sn
≥ 95 % S
op
≤ 105 % S
op
≤ 5 %
Value
1.1 x Ss: 60 ms ± 10 ms
2.0 x Ss: 45 ms ± 10ms
0.5 x Ss: 30 ms ± 10ms
, ± 1 % or ± 10ms
t
+ t
basic
d
< 40 ms
Value
2.5 % In
2.5% Vn
Chapter 3 Page 20 of 56
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