Siemens siprotec 7SJ63, Инструкция по эксплуатации

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Technical Data
10-12
7SJ63 Manual
C53000-G1140-C120-1
10.2 Definite-Time Overcurrent Protection (50 and 50N Elements)
Pickup and Time
Delay Ranges/
Resolutions Pickup Current 50–1 (phases) 0.50 A to 175.00 A
1
)(increments 0.05 A)
1
)
or
∞
(ineffective, no pickup)
Pickup Current 50N–1 (ground)0.25 A to 175.00 A
1
)(increments 0.05 A)
1
)
or
∞
(ineffective, no pickup)
Pickup Current 50–2 (phases) 0.50 A to 175.00 A
1
)(increments 0.05 A)
1
)
or
∞
(ineffective, no pickup)
Pickup Current 50N–2 (ground)0.25 A to 175.00 A
1
)(increments 0.05 A)
1
)
or
∞
(ineffective, no pickup)
Delay Times T 50–1, 50–2, 0.00 s to 60.00 s (increments 0.01 s)
50N–1, 50N–2 or
∞
(does not expire)
The set times are pure delay times.
Inherent Operating
Times Pickup times without delay (T) or inrush stabilization. With inrush stabilization add
10 ms
50–1, 50–2, 50N–1, 50N–2
– Current = 2 x Pickup Value approx. 30 ms
– Current = 10x Pickup Value approx. 20 ms
Dropout Times
50–1, 50–2, 50N–1, 50N–2 approx. 40 ms
Dropout Dropout/Pickup (ratio) approx. 0.95 for I/I
N
≥
0.3
Tolerances Pickup Current 50–1, 50–2,
50N–1, 50N–2
2 % of setting value or 50 mA
1
)
Delay Times T 1 % of setting value or 10 ms
Influencing Vari-
ables for Pickup Power supply direct voltage in range
0.8
≤
V
PS
/ V
PS nominal
≤
1.15 1 %
Temperatur in range
23º F
≤ ϑ
amb
≤
131º F 0.06% /10º F
Frequency in range
0.95
≤
f/f
N
≤
1.05 1 %
Harmonic currents
– Up to 10 % 3. Harmonic
1 %
– Up to 10 % 5. Harmonic 1 %
1
) For I
N
= 1 A, divide all limits and increments by 5.
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