Performance Specification; Table 1-17 50 Instantaneous & Dtl Oc & Ef; Table 1-18 51 Time Delayed Oc & Ef; Table 1-19 50Lc/Sotf - Siemens 7SR45 Argus User Manual

1.4

Performance Specification

This section describes about the settings available for different protection functions and its tolerance limits.
Table 1-17
Operation
Elements
Setting Range Is (50/50N/50G)
Time Delay
Operate Level I
op
Reset level
Basic Operate time
(with load current)
50, 50G
50N
Operate time delay
Inhibited by
Table 1-18
Operation
Elements
Setting Range Is (51)
Setting Range Is (51G, 51N)
Time Multiplier
Time Delay (DTL)
Operate Level
Reset level
Minimum Operate time
(with load current)
IEC
ANSI
Follower Delay
Reset
Inhibited by
Table 1-19
Operate level
Setting range
© 2017 Siemens Protection Devices Limited
50 Instantaneous & DTL OC & EF
51 Time Delayed OC & EF
50LC/SOTF
Non directional
Phase, Derived Earth, Measured Earth
0.2, 0.3,..... 20.0xIn
0,0.01,....600 s
100% Is, ±5%
> 0.2xIn to 0.9xIn setting: ³ 91 % I
> 1xIn to 20xIn setting: ³ 94 % I
2xI 25 ms, ±15 ms,
S
5xI 20 ms, ±15 ms
S
Tbasic+Td, ± 1% or ± 30 ms
Binary Input
Non directional
Phase, Derived Earth, Measured Earth
0.2, 0.21... 2.0xIn
0.1,0.11... 0.8xIn
0.01 to 10
0 s - 15 s
110% Is, ±5% or ±2%x In
≥90 % Iop
K
= ´
t Tm
[ ]
a
op -
I
1
Is
é ù
A
= + ´ ú
ê
t B Tm
[ ]
op -
P
ë I û
1
Is
± 5% or ± 50 ms
0 s - 20 s
IEC/ANSI decaying, 0 s - 60 s
Binary Input
100% Is, ±5%
1,2,....20xIn
7SR45 Performance Specification
op
op
Chapter 3 Page 10 of 10