Siemens siprotec SJ62, Руководство пользователя

Страница: 482 / 715

4.9 Negative Sequence Protection 46-1, 46-2
480
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
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
∞
(dis-
abled)
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
≤
4 A
for
I
Nom
=
5 A
All phase currents
≤
20 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 DC Voltage in Range
0,8
≤
V
PS
/V
PSNom
≤
1.15
1 %
Temperature in Range
23
°
F (–5
°
C)
≤ Θ
amb
≤
131
°
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 overreach for
τ
> 100 ms (with
complete asymmetry)
<5 %