Dynamic Cold Load Pickup - Siemens SIPROTEC 4 User Manual

4.6

Dynamic Cold Load Pickup

Timed Changeover of Settings
Controlled functions
Initiation criteria
Time control
Current control
Setting Ranges / Increments
Current Control
Time Until Changeover To Dynamic Settings T
Period Dynamic Settings are Effective After a Reclo-
sure T
Active
Fast Reset Time T
Dynamic Settings of Pickup Currents and Time
Delays or Time Multipliers
SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016
Directional and non-directional time overcurrent protection (separated
acc. to phases and ground)
Current Criteria "BkrClosed I MIN"
Interrogation of the circuit breaker position
Automatic reclosing function ready
3 time elements
3 time elements
(T
CB Open.
Current threshold "BkrClosed I MIN" (reset on current falling below
threshold: monitoring with timer)
for Ι
N
for Ι
N
Stop
, T , T
Active Stop)
= 1 A 0,04 A to 1,00 A
0,20 A to 5,00 A
= 5 A
0 s to 21600 s (= 6 h)
CB Open
1 s to 21600 s (= 6 h)
1 s to 600 s (= 10 min) or ∞ (fast
reset inactive)
Adjustable within the same ranges and with the same
increments as the directional and non-directional time
overcurrent protection
Technical Data
4.6 Dynamic Cold Load Pickup
Increments
0.01 A
Increments 1 s
Increments 1 s
Increments 1 s
465