To Next Page

To Previous Page

Technical Data

4.14 Instantaneous High-Current Switch-onto-Fault Protection (SOTF)

SIPROTEC, 7SD5, Manual

C53000-G1176-C169-5, Release date 02.2011

612

4.14 Instantaneous High-Current Switch-onto-Fault Protection (SOTF)

Pickup

Times

High current pickup I>>> for I

= 1 A 0.10 A to 15.00 A

or ∞ (disabled)

Increments 0.01 A

for I

= 5 A 0.50 A to 75.00 A

or ∞ (disabled)

High current pickup I>>>> for I

= 1 A 1.00 A to 25.00 A

or ∞ (disabled)

Increments 0.01 A

for I

= 5 A 5.00 A to 125.00 A

or ∞ (disabled)

Dropout to pickup ratio Approx. 90 %

Pickup tolerance 3 % of setting value or 1 % of I

Shortest trip time

(fast relays/high-speed relays)

Approx. 10 ms / 5 ms

Siemens SIPROTEC User Manual

Questions and Answers: