General; Functional Scope; Description - Siemens SIPROTEC 7SJ62 Manual

Functions

2.1 General

2.1 General
The settings associated with the various device functions may be modified using the operating or service inter-
face in DIGSI in conjunction with a personal computer. Some parameters may also be changed using the con-
trols on the front panel of the device. The procedure is set out in detail in the SIPROTEC System Description /1/.
2.1.1

Functional Scope

The 7SJ62/64 relay contains protection functions as well as auxiliary functions. The hardware and firmware is
designed for this scope of functions. Additionally, the control functions can be matched to the system require-
ments. Individual functions can be enabled or disabled during the configuration procedure. The interaction of
functions may also be modified.

2.1.1.1 Description

Setting the Functional Scope
Example for the configuration of the functional scope:
A protected system consists of overhead lines and underground cables. Since automatic reclosing is only
needed for the overhead lines, the automatic reclosing function is not configured or "disabled" for the relays
protecting the underground cables.
The available protection and additional functions can be configured as Enabled or Disabled. For individual
functions, a choice between several alternatives may be possible, as described below.
Functions configured as Disabled are not processed by the 7SJ62/64. There are no messages and corre-
sponding settings (functions, limit values) queried during configuration.
Note
Available functions and default settings are depending on the order variant of the relay (see A.1 for details).
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SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008