Siemens 7SR11 Argus Manual page 13

46 Negative Phase Sequence Overcurrent
Number of Elements
DT Setting Range Is
DT Operate Level
DT Delay Setting td
DT Basic Operate Time
0 to 2 xIs
0 to 5 xIs
DT Operate time
following delay.
IT Char Setting
IT Setting Range
Tm Time Multiplier
Char Operate Level
Overshoot Time
Inhibited by
47 Negative Phase Sequence
Number of Elements
Setting Range Vs
Hysteresis Setting
Operate Level
Delay Setting td
Basic Operate Time
0V to 1.5xVs
0V to 10xVs
Operate time following
delay.
Overshoot Time
Inhibited by
49 Thermal Overload
Operate levels
Setting Range Is
Operate Level
Time Constant Setting
Operate time
Alarm Level
Inhibited by
Siemens Protection Devices Limited
DT & IT
0.05,0.10...4.0 x In
100% Is, ±5% or ±1%xIn
0.00,0.01...20,20.5...100,101...
1000,1010...10000,10100...144
00s
40ms ±10ms
30ms ±10ms
Tbasic +td , ±1% or ±10ms
IEC NI,VI,EI,LTI ANSI MI,VI,EI &
DTL
0.05..2.5
0.025,0.050...1.6
105% Is, ±4% or ±1%In
< 40ms
Binary or Virtual Input
2
1,1.5...90V
0,0.1...80%
100% Vs, ±2% or ±0.5V
0.00,0.01...20,20.5...100,101...
1000,1010...10000,10100...144
00s
80ms ±20ms
55ms ±20ms
Tbasic +td , ±2% or ±20ms
< 40ms
Binary or Virtual Input
Operate and Alarm
0.10,0.11...3.0 x In
100% Is, ±5% or ±1%xIn
1,1.5...1000min
⎧ ⋅ ⎫
2 2
⎪ ⎪
I I
τ
= ×
p
⎨ ⎬
t In
( )
⋅ × 2
⎪ ⎩ 2 ⎪ ⎭
I k I
B
±5% absolute or ±100ms where
Ip = prior current
Disabled, 50,51...100%
Binary or Virtual Input
50 (67) Instantaneous & DTL OC&EF (Directional)
Operation – 7SR12 only
Elements
Number of Elements
2 x 7SR11
4 x 7SR12
Setting Range Is
Time Delay
Operate Level
Operate time:
50
50N
Operate time following
delay
Inhibited by
51(67) Time Delayed OC&EF (Directional)
Operation – 7SR12 only
Elements
Number of Elements
2 x 7SR11
4 x 7SR12
Characteristic
Setting Range Is
Time Multiplier
Time Delay
Operate Level
Minimum Operate time
IEC
ANSI
Follower Delay
Reset
Inhibited by
Non directional, Forward or
reverse
Phase, Derived Earth, Measured
Earth & SEF
2/4 x OC
2/4 x Derived EF 'N'
2/4 x Measured EF 'G' where
fitted
2/4 x SEF where fitted
0.05,0.06...50 x In
SEF 0.005...5 x In
0.00...14400s
100% Is, ±5% or ±1%xIn
0 to 2xIs – 35ms, ±10ms,
0 to 5xIs – 25ms, ±10ms
0 to 2xIs – 40ms, ±10ms,
0 to 5xIs – 30ms, ±10ms
Tbasic +td , ±1% or ±10ms
Binary or Virtual Input
Inrush detector
VT Supervision
Non directional, Forward or
reverse
Phase, Derived Earth, Measured
Earth & SEF
2/4 x OC
2/4 x Derived EF 'N'
2/4 x Measured EF 'G'
2/4 x SEF where fitted
IEC NI,VI,EI,LTI ANSI MI,VI,EI &
DTL
0.05,0.1...2.5 x In
SEF 0.005...0.5 x In
0.025,0.05...1.6
0,0.01... 20s
105% Is, ±4% or ±1%xIn
K
= ×
t Tm
[ ]
α
op −
1
I
Is
⎡ ⎤
A
= + × ⎥
⎢
t B Tm
[ ]
op −
P 1
⎣ I ⎦
Is
± 5 % absolute or ± 30 ms
0 - 20s
ANSI decaying, 0 – 60s
Binary or Virtual Input
Inrush detector
VT Supervision
13