Siemens SIPROTEC 7SJ61 User Manual

Functions
2.2 Overcurrent Protection 50, 51, 50N, 51N
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
53
Figure 2-6 Logic diagram for the 50-1 current element for phases
The dropout delay only operates if no inrush was detected. An incoming inrush will reset a running dropout
delay time.
If parameter MANUAL CLOSE is set to 50 -1 instant. and manual close detection is used, a pickup causes
instantaneous tripping, even if blocking of the element via binary input is present. The same applies to 79AR
50-1 inst.
Figure 2-7 Logic diagram of the dropout delay for 50-1

Siemens SIPROTEC 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ61
Category	Controller
Language	English