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

Negative Sequence Protection 46-TOC (Inverse Time
Characteristic)
Setting Ranges/Increments
Pickup value 46-TOC PICKUP
for Ι
Nom
= 1 A
0.10 A to 2.00 A Increments
0.01 A
for Ι
Nom
= 5 A
0.50 A to 10.00 A
Time Multiplier 46-TOC TIMEDIAL (IEC) 0.05 s to 3.20 s or ∞ (disabled) Increments
0.01 s
Time Multiplier 46-TOC TIMEDIAL (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
Tripping Characteristics according to IEC
see also Figure 4-11
The tripping times for Ι
2
/Ι
2p
≥ 20 are identical to those for Ι
2
/Ι
2p
= 20.
Pickup threshold
approx. 1.10· Ι
2p
4.12
Technical Data
4.12 Negative Sequence Protection 46-TOC (Inverse Time Characteristic)
SIPROTEC Compact, 7SC80, Manual 537
E50417-G1140-C486-A8, Edition 07.2017