General; Functional Scope; Configuration Of The Scope Of Functions; Setting Notes - Siemens SIPROTEC 4 7VK61 Manual

Breaker management device
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Functions

2.1 General

2.1
General
A few seconds after the device is switched on, the initial display appears in the LCD. A selection of measured
values is displayed.
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. Entry of password No. 7 (for setting modification) is
required 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 personal computer connected to the front or
service interface of the device utilizing the DIGSI software package. The level 5 password (individual parame-
ters) is required.

Functional Scope

2.1.1
2.1.1.1

Configuration of the Scope of Functions

The 7VK61 relay contains a series of protective and additional functions. The hardware 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 inter-
action of functions may also be modified e.g., the reclosing function can be implemented with or without
synchronization. If a function is not required, it can be deactivated during configuration.
The available protection functions and additional functions can be configured as Enabled or Disabled. For
some functions, a choice between several options is possible which are described below.
Functions configured as Disabled are not processed by the 7VK61. There are no indications, and corre-
sponding settings (functions, limit values) are not displayed during setting.
NOTE
i
i
The functions and default settings available depend on the device version ordered.
2.1.1.2

Setting Notes

Configuring the functional scope
The scope of functions with the available options is set in the Functional Scope dialog box to match plant
requirements.
Most settings are self-explanatory. Besonderheiten are described below.
Special Cases
If use of the setting group changeover function is desired, address 103 Grp Chge OPTION should be set to
Enabled. In this case, up to four different groups of settings may be changed (see also Section
Group), quickly and easily during device operation. With the setting Disabled only one parameter group is
available.
Address 106 VT CONNECTION determines how the voltage transformers are connected. VT CONNECTION =
3phase implies that the three phase voltages are connected in wye connection. VT CONNECTION = 1phase
is selected, if the device is connected to only one voltage transformer. In this case, the voltage connected to
voltage input U
transformer is then invariably set to Usy2 transf. and excludes other setting options. The parameter
212 Usy2 connection is then hidden. The setting VT CONNECTION = NO hides all voltage-relevant func-
tions and parameters.
Parameter 107 CT CONNECTION is set to configure the current transformer connection. If the default setting
CT CONNECTION = YES is active, all current-induced functions (current criterion of voltage protection, line
status detection, measurements of currents and power, current-induced measured value monitoring) are
26
is always interpreted as the voltage UU
4
which is to be synchronized. Parameter 210 U4
sy2
C53000-G1176-C159-5, Edition 05.2018
2.1.4 Change
SIPROTEC 4, 7VK61, Manual

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