7SR11 & 7SR12 Performance Specification
ยฉ2017 Siemens Protection Devices Limited Chapter 3 Page 24 of 56
2.6 47 Negative Phase Sequence Voltage
2.6.1 Reference (47)
Parameter Value
Vs
Setting 1, 1.5โฆ 90V
V
s
Guard
Guard Setting 1, 1.5, โฆ199.5, 200 V
Hyst.
Hysteresis 0, 0.1โฆ 80%
t
d
Delay setting
0.00, 0.01โฆ20.00, 20.10โฆ 100, 101โฆ 1000, 1010โฆ 10000,
10100โฆ 14400 s
2.6.2 Operate and Reset Level (47)
Attribute Value
V
op
Operate level
100 % Vs, ยฑ 2 % or ยฑ 0.5 V
Reset level (100%-Hyst.) x V
op
ยฑ 1% or ยฑ 0.25V
Repeatability
ยฑ 1 %
Variation
-10 ยฐC to +55 ยฐC
โค 5 %
f
nom
ยฑ 5 %
โค 5 %
2.6.3 Operate and Reset Time (47)
Attribute Value
t
basic
Element basic operate time
0V to 2.0 xVs, 80 ms, ยฑ 20ms
0V to 10 xVs, 55ms, ยฑ 20ms
t
op
Operate time following delay
t
basic
+ t
d
, ยฑ 2 % or ยฑ 20ms
Repeatability
ยฑ 1 % or ยฑ 20ms
Overshoot time < 40 ms
Disengaging time < 90 ms