Definite Time Overcurrent Protection 50, 50N - Siemens siprotec SJ62 User Manual

4 Technical Data
4.2

Definite Time Overcurrent Protection 50, 50N

Operating Modes
Setting Ranges / Increments
Times
Dropout Ratio
Tolerances
Influencing Variables for Pickup and Dropout
459
Three-phase
Two-phase
Pickup current 50–1, 50–2 (phases) for I
Pickup current 50N–1, 50N–2
(ground)
Delay times T
Dropout delay times 50 T DROP-OUT, 50N T
DROP-OUT
Pickup times (without inrush restraint, with restraint add 10 ms)
50-1, 50-2, 50N-1, 50N-2
– Current = 2 x Pickup Value
– Current = 10 x Pickup Value
Dropout Times
50-1, 50-2, 50N-1, 50N-2
Dropout ratio
Pickup current
Delay times T
Power supply direct voltage in range 0.8 ≤
≤ 1.15
V /V
PS PSNom
Temperature in range
–5 °C ≤ Θ ≤ 55 °C
amb
Frequency in range 0.95 ≤ f/f
Standard
Phases A and C
= 1 A 0.10 A to 35.00 A or ∞
Nom
(disabled)
= 5 A 0.50 A to 175.00 A or ∞
for I
Nom
(disabled)
= 1 A 0.05 A to 35.00 A or ∞
for I
Nom
(disabled)
= 5 A 0.25 A to 175.00 A or ∞
for I
Nom
(disabled)
0.00 s to 60.00 s or ∞
(disabled)
0.00 s to 60.00 s
approx. 30 ms
approx. 20 ms
approx. 40 ms
2 % of set value or 10 mA with I
or 50 mA with I
1 % or 10 ms
1 %
0.5 %/10 K
≤ 1.05
1 %
Nom
Increments
0.01 A
Increments
0.01 A
Increments 0.01
s
Increments
0.01 s
≥ 0.3
approx. 0.95 for I/I
Nom
Nom
= 5 A
Nom
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
= 1 A