Siemens SIPROTEC 4 7VK61 Manual page 179

Further figures show examples for the additional connection of a different voltage, in this case the busbar
voltage (e.g. for voltage protection or synchronism check). For the voltage protection the address 210 U4
transformer = Ux transformer has to be set, U4 transformer = Usy2 transf. for the synchronism
check. The address 215 Usy1/Usy2 ratio is only then not equal to 1 when feeder transformer and busbar
transformer have a different transformation ratio. .
If there is a power transformer between the set of busbar voltage transformers and the set of feeder voltage
transformers, the phase displacement of the voltage caused by the power transformer must be compensated
for the synchronism check if used. In this case also check the addresses 212 Usy2 connection, 214 φ
Usy2-Usy1 and 215 Usy1/Usy2 ratio. You will find detailed notes and an example in Section
2.1.3.1 Setting Notes
Binary Inputs and Outputs
The connections to the power plant depend on the possible allocation of the binary inputs and outputs, i.e.
how they are assigned to the power equipment. The preset allocation can be found in the tables in Section
D Default Settings and Protocol-dependent Functions
sponds to the allocated indication functions.
Changing Setting Group
If binary inputs are used to change setting groups, please observe the following:
•
To enable the control of 4 possible setting groups 2 binary inputs have to be available. One binary input
must be set for
•
To control two setting groups, one binary input set for
input >Set Group Bit1 ", which is not assigned, is considered to be not controlled.
•
The status of the signals controlling the binary inputs to activate a particular setting group must remain
constant as long as that particular group is to remain active.
The following Table shows the relationship between binary inputs and the setting groups A to D. Principal
connection diagrams for the two binary inputs are 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).
Table 3-1
>Set Group Bit 0
Not energized
Energized
Not energized
Energized
[einstellgruppenumschalt-7sa-ueber-binaere-240702-kn, 1, en_GB]
Figure 3-1
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
under "Voltage connection".
>Set Group Bit0 , the other input for >Set Group Bit1 .
Changing setting groups with binary inputs
Binary Input
>Set Group Bit 1
Not energized
Not energized
Energized
Energized
Connection diagram (example) for setting group switching with binary inputs
of the Appendix. Check also whether the labelling corre-
>Set Group Bit0 is sufficient since the binary
Active settings group
GroupA
Group B
Group C
Group D
Mounting and Commissioning
3.1 Mounting and Connections
179