Technical Data
4.9 Negative Sequence Protection 46-1, 46-2
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
499
4.9
Negative Sequence Protection 46-1, 46-2
Setting Ranges / Increments
Functional Limit
Times
Dropout Ratio
Tolerances
Influencing Variables for Pickup Values
Unbalanced load tripping element
46-1,46-2
for
I
Nom
= 1 A 0.10 A to 3.00 A or
∞
(disabled)
Increments 0.01 A
for
I
Nom
= 5 A 0.50 A to 15.00 A or
∞
(disabled)
Delay Times 46-1, 46-2
0.00 s to 60.00 s or
∞
(disabled)
Increments 0.01 s
Dropout Delay Times 46 T DROP-OUT
0.00 s to 60.00 s
Increments 0.01 s
Functional Limit
for
I
Nom
= 1 A all phase currents
≤
10 A
for
I
Nom
= 5 A all phase currents
≤
50 A
Pickup Times
Dropout Times
Approx. 35 ms
Approx. 35 ms
Characteristic 46-1, 46-2
Approx. 0.95 for
I
2
/
I
Nom
≥
0.3
Pickup values 46-1, 46-2
3 % of set value or 10 mA for
I
Nom
= 1 A or 50 mA for
I
Nom
= 5 A
Time Delays
1 % or 10 ms
Power supply direct voltage in range 0.8
≤
V
PS
/V
PSNom
≤
1.15
1 %
Temperature in range 23.00 °F (-5 °C)
≤
Θ
amb
≤
131.00 °F (55 °C)
0.5 %/10 K
Frequency in range 0.95
≤
f/f
Nom
≤
1.05
1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %
Transient overreaction for
τ
> 100 ms (with full displacement)
<5 %
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