Siemens SIPROTEC 7SJ80

Dynamic Cold Load Pickup
Timed Changeover of Settings
Controlled functions Directional and non-directional time overcurrent protection (separated
acc. to phases and ground)
Initiation criteria Current Criteria "BkrClosed I MIN"
Interrogation of the circuit breaker position
Automatic reclosing function ready
3 time elements
Time control 3 time elements
(T
CB Open.
, T
Active
, T
Stop)
Current control Current threshold "BkrClosed I MIN" (reset on current falling below
threshold: monitoring with timer)
Setting Ranges / Increments
Current Control
for Ι
N
= 1 A
0.04 A to 1.00 A Increments
0.01 A
for Ι
N
= 5 A
0.20 A to 5.00 A
Time Until Changeover To Dynamic Settings T
CB Open
0 s to 21600 s (= 6 h) Increments 1 s
Period Dynamic Settings are Effective After a Reclo-
sure T
Active
1 s to 21600 s (= 6 h) Increments 1 s
Fast Reset Time T
Stop
1 s to 600 s (= 10 min) or ∞ (fast
reset inactive)
Increments 1 s
Dynamic Settings of Pickup Currents and Time
Delays or Time Multipliers
Adjustable within the same ranges and with the same
increments as the directional and non-directional time
overcurrent protection
4.6
Technical Data
4.6 Dynamic Cold Load Pickup
SIPROTEC 4, 7SJ80, Manual 379
E50417-G1140-C343-A8, Edition 12.2017