Siemens siprotec 7SA522 User Manual

2 Functions
32
7SA522 Manual
C53000-G1176-C155-3
2.1 General
A few seconds after the device is switched on, the initial display appears in the LCD.
Configuration of the device functions are made via the DIGSI
®
software from your PC.
The procedure is described in detail in the SIPROTEC
®
4 System Description, Order
No. E50417-H1176-C151. Entry of password No. 7 (for setting modification) is re-
quired to modify configuration settings. Without the password, the settings may be
read, but may not be modified and transferred to the device.
The function parameters, i.e. settings of function options, threshold values, etc., can
be entered via the keypad and display on the front of the device, or by means of a per-
sonal computer connected to the front or service interface of the device utilising the
DIGSI
®
software package. The level 5 password (individual parameters) is required.
2.1.1 Functional Scope
2.1.1.1 Configuration of the Functional Scope
The 7SA522 relay contains a series of protective and additional functions. The hard-
ware and firmware provided is designed for this scope of functions. In addition the
command functions can be matched to the system conditions. Individual functions can
be activated or deactivated during the configuration procedure. The interaction of
functions may also be modified.
Example
for the configuration of functional scope:
A substation has overhead line and transformer feeders. You want to perform fault lo-
cation on overhead lines only. For the devices on the transformer feeders you there-
fore “suppress” this function during configuration.
The available protective and additional functions must be configured as (QDEOHG or
'LVDEOHG. For some functions a choice between several alternatives is possible, as
described below.
Functions configured as 'LVDEOHG are not processed by the 7SA522. There are no
indications, and corresponding settings (functions, limit values) are not displayed
during setting.
Note
The functions and default settings available depend on the order variant of the device.
2.1.1.2 Setting Notes
Configuration of
Function Scope
Configuration settings can be entered using a PC and the software program DIGSI
®
and transferred via the operating interface on front cover of the device or via the
service interface. Operation using DIGSI
®
is described in the SIPROTEC
®
4 System
Description, Order No. E50417-H1176-C151.

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English