General; Functional Scope; Description - Siemens SIPROTEC 7SD80 Manual

Functions

2.1 General

2.1 General
You can edit the function parameters via the user interface or service interface from a PC running the DIGSI
software; some parameters can also be changed using the controls at the front panel of the device. The pro-
cedure is set out in detail in the SIPROTEC 4 System Description /1/.
2.1.1

Functional Scope

The 7SD80 relay comprises protection functions and additional functions. The hardware and firmware are de-
signed for this scope of functions. Additionally, the control functions can be matched to the system require-
ments. Individual functions can be activated or deactivated during the configuration procedure or the interaction
of functions be modified.

2.1.1.1 Description

Setting the Scope of Functions
Example for the configuration of the scope of functions:
A system consists of overhead lines and underground cables. Since automatic reclosing is only needed for the
overhead lines, the automatic reclosing function is disabled for the relays protecting the underground cables.
The available protection functions and additional functions can be configured as Enabled or Disabled. For
some functions, there is a choice between several alternatives possible, as described below.
Functions configured as Disabled are not processed in the 7SD80. There are no messages issued and the
corresponding settings (functions, limit values) are not queried during configuration.
Note
Available functions and default settings depend on the ordered variant of the relay (see A.1 for details).
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SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011