Single-Phase Overcurrent Protection 50 - Siemens siprotec SJ62 User Manual

4 Technical Data
4.7

Single-Phase Overcurrent Protection 50

Current Elements
Operating Times
Dropout Ratios
Tolerances
Influencing Variables for Pickup Values
477
High-set current elements
Definite-Time Current Element 50-1
The set times are pure delay times.
1)
Secondary values for I
Nom
2)
Secondary values for „sensitive" measuring input, independent of nominal device current
Pickup/Dropout Times
Frequency Pickup Time
minimum
maximum
Dropout time approx.
Current Elements
Currents
Times
Power supply direct voltage in range 0.8 ≤
≤ 1.15
V /V
PS PSNom
Temperature in Range
23.00 °F (–5 °C) ≤ Θ ≤ 131.00 °F (55 °C)
amb
Frequency in range 0.95 ≤ f/f
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
0.05 A to 35.00 A
50-2
0.003 A to 1.500 A
or ∞ (element disabled)
T 0.00 s to 60.00 s
50-2
or ∞ (no trip)
0.05 A to 35.00 A
0.003 A to 1.500 A
or ∞ (element disabled)
T 0.00 s to 60.00 s
50-1
or ∞ (no trip)
= 1 A; with I = 5 A multiply currents by 5
Nom
50 Hz
14 ms
≤ 35 ms
25 ms
approx. 0.95 for I/I
3 % of setting value or 1 % of nominal current
at I = 1 A or 5 A
Nom
5 % of setting value or 3 % of nominal current
at I = 0.1 A
Nom
1 % of setting value or 10 ms
1 %
0.5 %/10 K
≤ 1.05
1 %
Nom
1 %
1 %
1)
Increments 0.01 A
2)
Increments
0.001 A
Increments 0.01 s
1)
Increments 0.01 A
2)
Increments
0.001 A
Increments 0.01 s
60 Hz
13 ms
≤ 35 ms
22 ms
≥ 0.5
Nom
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015