Siemens SIPROTEC 4 7SJ61 - Negative Sequence Protection (inverse-time characteristics)

Negative Sequence Protection (inverse-time characteristics)
Setting Ranges / Increments
Pickup value 46-TOC (Ι
2p
) für Ι
Nom
= 1 A
0.05 A to 2.00 A Increments 0.01 A
für Ι
Nom
= 5 A
0.25 A to 10.00 A
Time Multiplier T
I2p
(IEC) 0.05 s to 3.20 s or ∞ (disabled) Increments 0.01 s
Time Multiplier D
I2p
(ANSI) 0.50 s to 15.00 s or ∞ (disabled) Increments 0.01 s
Functional Limit
Functional Limit
for Ι
Nom
= 1 A
all phase currents ≤ 10 A
for Ι
Nom
= 5 A
all phase currents ≤ 50 A
Trip Time Curves acc. to IEC
See also Figure 4-7
The trip times for Ι
2
/Ι
2p
≥ 20 are identical to those for Ι
2
/Ι
2p
= 20
Pickup Threshold
approx. 1.10· Ι
2p
4.8
Technical Data
4.8 Negative Sequence Protection (inverse-time characteristics)
306 SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016