Advertisement
Chapter 3) 7SR17 Rho Performance Specification
2.6
46 Phase Unbalance Protection
2.6.1
Reference
Parameter
46 Type
I
46 Setting
s
t
46 Time Mult setting
m
t
46 Delay setting
d
t
46 Min Operate Time setting
min
2.6.2
Operate and Reset Level
Attribute
I
Operate level
op
Reset level
Repeatability
Transient overreach (X/R
Variation
2.6.3
Operate and Reset Time
Attribute
NPS
Magnitude Difference
t
char = DTL
d
t
Element basic operate time
basic
t
46 Min Operate Time setting
min
Repeatability
Overshoot time
Disengaging time
Chapter 3) Page 24 of 46
100)
-10 °C to +55 °C
f
- 3 Hz to f
+ 2 Hz
nom
nom
Value
Magnitude Difference, NPS
0.1 ... 0.4 x Itheta
0.1 ... 2
0.00 ... 20 s
0.00 ... 20 s
Value
100 % Is,
5 % or
1% In
95 % I
op
1 %
-5 %
5 %
5 %
Value
1
5 % absolute or
t
t
m
2
I
2
I
theta
Subject to minimum operate time
1
5 % absolute or
t
t
m
2
I
I
theta
Subject to minimum operate time
t
,
1 % or
30ms
d
2 x Is: 40 ms,
10ms
5 x Is: 30 ms,
10ms
t
+ t
1 % or
10ms
min
basic
1 % or
10ms
<40 ms
< 60 ms
©2014 Siemens Protection Devices Limited
30 ms,
30 ms,
Advertisement
Chapters
