Siemens siprotec SJ62 User Manual page 69

2 Functions
Figure 2-9 Logic diagram of the 51 current element for phases
67
The following two figures show the logic diagrams for the 51 and 51N protection.
If parameter MANUAL CLOSE is set to 51 instant. and manual close detection ap-
plies, the trip is initiated as soon as the pickup conditions arrives, even if the element
is blocked via binary input. The same applies to 79AR 51 instantaneous.
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015