Dynamic Cold Load Pickup - Siemens SIPROTEC 7SJ62 Manual

4.6

DynamiC Cold Load Pickup

Timed Changeover of Settings
Controlled functions
Initiation criteria
Time control
Current control
Setting Ranges / Increments
Current Control
„BkrClosed I MIN"
Time Until Changeover To Dynamic Settings
T
CB OPEN
Period Dynamic Settings are Effective After a
Reclosure T
Active
Fast Reset Time T
Dynamic Settings of Pickup Currents and
Time Delays or Time Multipliers
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
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
Binary input
3 time elements
(T , T
CB Open.
Current threshold "BkrClosed I MIN" (reset on current falling below
threshold: monitoring with timer)
for I = 1 A 0.04 A to 1.00 A
Nom
for I = 5 A 0.20 A to 5.00 A
Nom
Stop
, T
Active Stop)
0 s to 21600 s (= 6 h)
1 s to 21600 s (= 6 h)
1 s to 600 s (= 10 min) or ∞ (fast reset inactive) Increments 1 s
Adjustable within the same ranges and with the same incre-
ments 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
495