Negative Sequence Protection (Inverse-Time Characteristics) - Siemens SIPROTEC 4 Manual

Technical Data

4.10 Negative Sequence Protection (inverse-time characteristics)

4.10 Negative Sequence Protection (inverse-time characteristics)
Setting Ranges / Increments
Pickup value 46-TOC (Ι
Time Multiplier T
Time Multiplier D
Functional Limit
Functional Limit
Trip Time Curves acc. to IEC
See also Figure 4-7
The trip times for Ι
Pickup Threshold
384
) for Ι = 1 A
2p Nom
for Ι = 5 A
Nom
(IEC)
I2p
(ANSI)
I2p
for Ι = 1 A all phase currents ≤ 10 A
Nom
= 5 A all phase currents ≤ 50 A
for Ι
Nom
/Ι ≥ 20 are identical to those for Ι
2 2p
0.05 A to 2.00 A
0.25 A to 10.00 A
0.05 s to 3.20 s or ∞ (disabled)
0.50 s to 15.00 s or ∞ (disabled)
/Ι = 20
2 2p
approx. 1.10· Ι
2p
E50417-G1140-C343-A8, Edition 12.2017
Increments 0.01 A
Increments 0.01 s
Increments 0.01 s
SIPROTEC 4, 7SJ80, Manual