Specifications

7SR242 Duobias Performance Specification
©2010 Siemens Protection Devices Limited Chapter 3 - Page 19 of 45
2.4 46NPS Negative Phase Sequence Overcurrent
2.4.1 Reference (46DT)
Parameter Value
I
s
Setting 0.05, 0.06... 4.0xIn
t
d
Delay setting
0.00, 0.01…20.00, 20.50… 100, 101… 1000, 1010…
10000, 10100… 14400 s
2.4.2 Operate and Reset Level (46DT)
Attribute Value
I
op
Operate level
100 % Is, r 5 % or r 1% In
Reset level
t 95 % I
op
Repeatability
r 1 %
Transient overreach
(X/R d 100)
d -5 %
-10 °C to +55 °C
d 5 %
Variation
f
nom
- 3 Hz to f
nom
+ 2 Hz
d 5 %
2.4.3 Operate and Reset Time (46DT)
Attribute Value
0 to 2 xIs: 40 ms, r 10ms
t
basic
Element basic operate time
0 to 5 xIs: 30 ms, r 10ms
t
op
Operate time following delay
t
basic
+ t
d
, r 1 % or r 10ms
Repeatability
r 1 % or r 10ms
Overshoot time <40 ms
Disengaging time < 60 ms
2.4.4 Reference (46IT)
Parameter Value
char
Characteristic setting IEC-NI, -VI, -EI, -LTI; ANSI-MI, -VI, -EI; DTL
Tm
Time Multiplier setting 0.025, 0.050 … 1.6
I
s
Setting 0.05, 0.06… 2.5xIn
t
d
Delay setting 0, 0.01… 20 s
t
res
Reset setting ANSI DECAYING, 0, 1… 60 s
2.4.5 Operate and Reset Level (46IT)
Attribute Value
I
op
Operate level
105 % Is, r 4 % or r 1% In
Reset level
t 95 % I
op
Repeatability
r 1 %
-10 °C to +55 °C
d 5 %
Variation
f
nom
- 3 Hz to f
nom
+ 2 Hz
d 5 %