Siemens Argus 7SR21 - Operate and Reset Time; 46 NPS Negative Phase Sequence Overcurrent; Reference (46 DT); Operate and Reset Level (46 DT)

7SR21 & 7SR22 Performance Specification
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2.7 46NPS Negative Phase Sequence Overcurrent
2.7.1 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
2.7.2 Operate and Reset Level (46DT)
Attribute Value
I
op
Operate level
100 % Is, ± 5 % or ± 1% In
Reset level
³ 95 % I
op
Repeatability
± 1 %
Transient overreach
(X/R £ 100)
£ -5 %
Variation
-10 °C to +55 °C
£ 5 %
f
nom
- 3 Hz to f
nom
+ 2 Hz
£ 5 %
2.7.3 Operate and Reset Time (46DT)
Attribute Value
t
basic
Element basic operate time
Switched from 0 to 2 xIs: 40 ms, ± 10 ms
Switched from 0 to 5 xIs: 30 ms, ± 10 ms
t
op
Operate time following delay
t
basic
+ t
d
, ± 1 % or ± 10 ms
Repeatability
± 1 % or ± 10 ms
Overshoot time <40 ms
Disengaging time < 60 ms
2.7.4 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
I Applied Current (for operate time) IDMTL 2 to 20 x Is
t
d
Delay setting 0, 0.01… 20 s
t
res
Reset setting ANSI DECAYING, 0, 1… 60 s