Siemens SIPROTEC 4 7SJ61 User Manual

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
4.5
Technical Data
4.5 Dynamic Cold Load Pickup
SIPROTEC 4, 7SJ61, Manual 303
C53000-G1140-C210-6, Edition 05.2016

Siemens SIPROTEC 4 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SJ61
Category	Relays
Language	English