Negative Sequence Protection (definite-time characteristic)
Setting Ranges / Increments
Unbalanced load tripping element
46-1.46-2
for
Ι
N
= 1 A
0.05 A to 3.00 A or ∞ (disabled)
Increments 0.01 A
for
Ι
N
= 5 A
0.25 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
Functional Limit
for
Ι
Nom
= 1 A
all phase currents ≤ 10 A
for
Ι
Nom
= 5 A
all phase currents ≤ 50 A
for
Ι
Nom
= 1 A
one phase current ≥ 0.1 A
for
Ι
Nom
= 5 A
one phase current ≥ 0.5 A
Times
Pickup Times
Dropout Times
approx. 35 ms
approx. 35 ms
Dropout Ratio
Characteristic 46-1, 46-2
approx. 0.95 for
Ι
2
/
Ι
Nom
≥ 0,3
Tolerances
Pickup values 46-1,
46-2
Ι
Nom
= 1 A 3 % of setting value or 10 mA
Ι
Nom
= 5 A 3 % of setting value or 50 mA
Time Delays
5 % of reference (calculated) value + 2 % current tolerance, or 30 ms
Influencing Variables for Pickup Values
Power supply direct voltage in range 0.8 ≤ V
PC
/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 25 Hz to 70 Hz
1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %
Transient overreaction for τ > 100 ms (with full displacement)
<5 %
4.9
Technical Data
4.9 Negative Sequence Protection (definite-time characteristic)
SIPROTEC 4, 7SJ62/64, Manual
469
C53000-G1140-C207-8, Edition 08.2016
Summary of Contents for SIPROTEC 4
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