Siemens SIPROTEC 4 - Page 367

Moreover, for the flexible protection functions, you can connect any voltage Vx. Then set under address 213
VT Connect. 3ph = Vab, Vbc, Vx or Van,Vbn,Vcn,Vx.
If there is only one voltage transformer on the system side, wiring is performed according to examples on
single-phase connection. For this case, address 240 VT Connect. 1ph in the P.System Data 1 specifies
to the device which primary voltage is connected to which analog input.
With 7SJ623, 7SJ624, 7SJ625, 7SJ626 and 7SJ64 in case of single-phase voltage transformer connection the
voltage connected to voltage input V
4
is always interpreted as the voltage which is to be synchronized.
Binary Inputs and Outputs
The configuration options of the binary in- and outputs, i.e. the procedure for the individual adaptation to the
plant conditions, are described in the SIPROTEC 4 System Description. The connections to the plant are
dependent on this configuration. The presettings of the device are listed in Appendix E Default Settings and
Protocol-dependent Functions. Please also check that the labeling strips on the front panel correspond to the
configured message functions.
Setting Group Change
If binary inputs are used to switch setting groups, please observe the following:
•
Two binary inputs must be dedicated to the purpose of changing setting groups when four groups are to
be switched. One binary input must be set for
>Set Group Bit0 , the other input for >Set Group
Bit1
. If either of these input functions is not assigned, then it is considered as not controlled.
•
For the control of 2 setting groups one binary input is sufficient, namely >Set Group Bit0 , since the
non-assigned binary input >Set Group Bit1 is then regarded as not connected.
•
The control signals must be permanently active so that the selected setting group is and remains active.
The following table shows the allocation of the binary inputs to the setting groups A to D and a simplified
connection diagram for the two binary inputs is illustrated in the following figure. The figure illustrates an
example in which both Set Group Bits 0 and 1 are configured to be controlled (actuated) when the associated
binary input is energized (high).
Where:
no =
not energized or not connected
yes = energized
Table 3-1 Changing setting groups using binary inputs
Binary Input Active Group
>Param.Wahl1 >Param. Wahl2
no no Group A
yes no Group B
no yes Group C
yes yes Group D
Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC 4, 7SJ62/64, Manual 367
C53000-G1140-C207-8, Edition 08.2016