Siemens 7SR105 Rho - Page 91

7SR105 Rho Performance Specification
© 2018 Siemens Protection Devices Chapter 3 Page 15 of 17
Table 1-24 50 Instantaneous & DTL OC&EF
Operation Non directional
Elements Phase, Derived Earth, Measured Earth
Setting Range I
s
(50/50N) 0.05,0.06…50xI
n
Setting Range I
s
(50G) 0.01, 0.011,.... 5xI
n
Time Delay 0.00…14400 s
Operate Level I
op
100 % I
s
, ± 5 % or ±1 % xI
n
Reset level
≥ 95 % I
op
Reset level (50G)
≥ 95 % I
op
or I
op
- 0.1 % I
n
Operate time:
50, 50G
#
50N
0 to 2xI
s
– 35 ms, ± 10 ms,
0 to 5xI
s
– 25 ms, ± 10 ms
0 to 2xI
s
– 40 ms, ± 10 ms,
0 to 5xI
s
– 30 ms, ± 10 ms
Operate time following delay t
basic
+t
d
, ± 1 % or ± 10 ms
Inhibited by Binary or Virtual Input
Inrush detector
Disengaging time (50G) < 50 ms
NOTE:
# The operating timings are measured on the basis of fundamental measurement algorithm, with protection
functions and communication ports configured in the relay.
Table 1-25 51 Time Delayed OC&EF
Operation Non directional
Elements Phase, Derived Earth, Measured Earth
Characteristic IEC-NI, -VI, -EI, -LTI; ANSI-MI, -VI, -EI; DTL
Setting Range I
s
(51/51N) 0.05,0.06…4xI
n
Setting Range I
s
(51G) 0.01,0.011,...0.5xI
n
Time Multiplier 0.01, 0.015....1.6, 1.7,....5, 6...100
Time Delay 0,0.01… 20 s
Operate Level 105 % Is, ± 4 % or ±1 %xI
n
Minimum Operate time
IEC
ANSI
[ ]
Tm
K
t
Is
I
op
×
−
=
1
α
[ ]
TmB
A
t
P
Is
I
op
×






+
−
=
1
± 5 % absolute or ± 40 ms
for TMS setting (0.01 to 0.245)
± 5 % absolute or ± 30 ms
for TMS setting (0.25 to 100)
Follower Delay 0 s to 20 s
Reset ANSI decaying, 0 s to 60 s
Inhibited by Binary or Virtual Input
Inrush detector