Siemens SIPROTEC 7SJ61, Руководство пользователя, Страница: 35 / 454

Functions
2.1 General
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008 35
2.1.3 Power System Data 1
2.1.3.1 Description
The device requires certain basic data regarding the protected equipment, so that the device can adapt to its
desired application. These may be, for instance, nominal power system and transformer data, measured quan-
tity polarities and their physical connections, breaker properties (where applicable) etc. There are also certain
parameters that are common to all functions, i.e. not associated with a specific protection, control or monitoring
function. The following section discusses these data.
2.1.3.2 Setting Notes
General
This data can be entered directly at the device: Select the MAIN MENU by pressing the
MENU
key. The user
should use the
▼
key to select SETTINGS , and then use the
X
key to navigate to the SETTINGS display. To
obtain the Power System Data display, select the
P.System Data 1
in SETTINGS display.
In DIGSI double-click on Settings to display the relevant selection. A dialog box will open under the option
P.System Data 1
with the tabs , , and Prot.Op. quant. where you can configure the individual parameters.
The following descriptions are therefore structured accordingly.
Rated Frequency (Power System)
The rated system frequency is set at address
214 Rated Frequency
. The factory setting of the model
number only has to be changed if the device is used for a purpose other than the one planned when ordering
the device.
Phase Rotation (Power System)
Address
209 PHASE SEQ.
is used to change the default phase sequence (
A B C
for clockwise rotation), if your
power system permanently has an anti-clockwise phase sequence (
A C B
). A temporary reversal of rotation
is also possible using binary inputs (see Section 2.15.2).
Temperature Unit (Power System)
Address
276 TEMP. UNIT
allows displaying the temperature values either in degrees Celsius or in degrees
Fahrenheit.