Siemens SIPROTEC 7SJ62 Instruction Manual

Functions
6-130 7SJ62 Manual
C53000-G1140-C121-1
Figure 6-57 Timing Diagram showing Two Unsuccessful Reclosing Shots (no additional reclosing of the circuit breaker)
Initiation Initiation of the automatic reclosing function can be caused by internal protective func-
tions or externally using a binary input. Each of the following elements may initiate the
automatic reclosing function:
50-2, 50N-2
50-1, 50N-1
51, 51N
67-2, 67N-2
67-1, 67N-1
67-TOC, 67N-TOC
Sensitive Ground Fault Protection 50Ns, 51Ns
Negative Sequence Protection 46
Binary Inputs
The automatic reclosing system can be programmed such that any of the elements
above can initiate, not initiate, or block reclosing. If an element initiates reclosing, the
appropriate reclosing program is executed.
Reclosing
Programs
Depending on the type of fault, two different reclosing programs can be used. The fol-
lowing applies:
• The single phase fault (ground fault) reclosing program applies if a phase-to-ground
fault is detected. Therefore, the ground fault reclosing program is executed only
when the elements associated with a specific phase and/or ground pick up. This
program can also be started via a binary input.
• The multiple phase fault (phase fault program) reclosing program applies to all other
cases. That is, when elements associated with two or more phases pickup, with or
without the pickup of ground elements, the phase reclosing program is executed. In
addition, when automatic reclosing is initiated by other functions, such as negative
Trip Command
Breaker Status
Dead Time
Reclose Command
Reset Time
Reclosing
Unsuccessful
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7ULS&RPPDQG
52-a
closed
open
(Blocking Time)
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Siemens SIPROTEC 7SJ62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ62
Category	Relays
Language	English