Negative Sequence Protection 46-Toc (Inverse Time Characteristic) - Siemens 7SC80 Manual

4.12 Negative Sequence Protection 46-TOC (Inverse Time
Characteristic)
Setting Ranges/Increments
Pickup value 46-TOC PICKUP
Time Multiplier 46-TOC TIMEDIAL (IEC)
Time Multiplier 46-TOC TIMEDIAL (ANSI)
Functional Limit
Functional Limit
Tripping Characteristics according to IEC
see also Figure 4-11
The tripping times for Ι
Pickup threshold
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017

4.12 Negative Sequence Protection 46-TOC (Inverse Time Characteristic)

for Ι = 1 A 0.10 A to 2.00 A
Nom
= 5 A 0.50 A to 10.00 A
for Ι
Nom
0.05 s to 3.20 s or ∞ (disabled)
0.50 s to 15.00 s or ∞ (disabled)
for Ι = 1 A all phase currents ≤ 10 A
Nom
for Ι = 5 A all phase currents ≤ 50 A
Nom
/Ι ≥ 20 are identical to those for Ι
2 2p
/Ι = 20.
2 2p
approx. 1.10· Ι
2p
Technical Data
Increments
0.01 A
Increments
0.01 s
Increments
0.01 s
537