Dynamic Cold Load Pickup Function - Siemens siprotec SJ62 User Manual

4.6

Dynamic Cold Load Pickup Function

Timed Changeover of Settings
Setting Ranges / Increments
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
Controlled Elements
Initiation Criteria
Timing
Current Control
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
Stop
Dynamic Settings of Pickup Currents and Time
Delays or Time Multipliers
4.6 Dynamic Cold Load Pickup Function
Directional and non-directional time overcurrent
protection elements (segregated into phase and
ground settings)
Current Criteria „BkrClosed I MIN"
Interrogation on the circuit breaker position
Automatic reclosing function ready
Binary Input
3 time levels
(T , T
CB Open Active
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
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)
Adjustable within the same ranges and with
the same increments as the directional and
non-directional time overcurrent protection
, T )
Stop
Increments 0.01 A
Increments 1 s
Increments 1 s
Increments 1 s
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