Siemens SIPROTEC 7SJ62, Руководство пользователя

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Technical Data
4.7 Single-phase Overcurrent Protection
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
496
4.7 Single-phase Overcurrent Protection
Current Elements
Operating Times
Dropout Ratios
Tolerances
Influencing Variables for Pickup Values
High-set current elements 50-2 0.05 A to 35.00 A
1)
0.003 A to 1.500 A
2)
or
∞
(element disabled)
Increments 0.01 A
Increments 0.001 A
T
50-2
0.00 s to 60.00 s
or
∞
(no trip)
Increments 0.01 s
Definite-Time Current Element 50-1 0.05 A to 35.00 A
1)
0.003 A to 1.500 A
2)
or
∞
(element disabled)
Increments 0.01 A
Increments 0.001 A
T
50-1
0.00 s to 60.00 s
or
∞
(no trip)
Increments 0.01 s
The set times are pure delay times.
1)
Secondary values for
I
Nom
= 1 A; with
I
Nom
= 5 A multiply currents by 5
2)
Secondary values for „sensitive“ measuring input, independent of nominal device current
Pickup/Dropout Times
Frequency Pickup Time 50 Hz 60 Hz
minimum 14 ms 13 ms
maximum
≤
35 ms
≤
35 ms
Dropout time approx. 25 ms 22 ms
Current Elements approx. 0.95 for I / I
Nom
≥
0.5
Currents 3 % of setting value or 1 % of nominal current at
I
Nom
= 1 A or 5 A
5 % of setting value or 3 % of nominal current at I
Nom
= 0.1 A
Times 1 % of setting value 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 %
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