Performance Specification - Siemens 7SR45 Argus User Manual

1.4

Performance Specification

This section describes about the settings available for different protection functions and its tolerance limits.
Operation
Elements
Setting Range I (50/50N/50G)
s
Time Delay
Operate Level I
op
Reset level
Basic Operate time
(with auxiliary power/load current):
50, 50G, 50N
Operate time delay
Inhibited by
Disengaging time
NOTE:
* With auxiliary power supply
Operation
Elements
Setting Range I (51)
s
Setting Range I (51G)
s
Setting Range I (51N)
s
Time Multiplier
Time Delay (DTL)
Operate Level
Reset level
Operate time
(with auxiliary power/load current)
IEC
IEEE/ANSI
DTL
Follower Delay
Reset
Inhibited by
NOTE:
#
Add current tolerance of ± 5 % or ± 2 %xI
below 0.1 and I below 0.1.
s
©2018 Siemens Protection Devices
Table 1-19 50 Instantaneous & DTL OC & EF
Non-directional
Phase, Derived Earth, Measured Earth
0.2, 0.3,..... 20.0xI
0,0.01,....600 s
100 % I
> 0.2xI
> 1xI
2xI
5xI
T
basic
Binary Input
< 50 ms *
Table 1-20 51 Time Delayed OC & EF
Non-directional
Phase, Derived Earth, Measured Earth
0.2, 0.21... 2.0xI
0.06, 0.07... 0.8xI
0.10, 0.11... 0.8xI
0.01,0.02.....10
0.00, 0.01... 15 s
110 % I
≥ 90 % I
t
op
t
op
± 5 % or ± 50 ms
t , ± 5 % or ± 40 ms
d
0.00, 0.01... 20 s
IEC/ANSI decaying, 0 s to 60 s
Binary Input
(whichever is greater) to the operating time tolerance for TMS
n
Chapter 3 - 7SR45 Performance Specification
n
, ± 5 %
s
to 0.9xI setting: ≥ 90 % I
n n
to 20xI setting: ≥ 94 % I
n n
25 ms, ± 15 ms,
S
20 ms, ± 15 ms
S
+T , ± 1 % or ± 30 ms
d
n
n
n
, ± 5 % or ± 2%xI
s n
op
K
= × Tm
[ ]
α
− 1
I
Is
 
A
= + B ×  Tm

[ ]
P
− 1
I
 
Is
#
op
op
Chapter 3 Page 13 of 14