Mounting and Connections
General
WARNING
Warning of improper transport, storage, installation, and application of the device.
Non-observance can result in death, personal injury or substantial property damage.
²
Trouble free and safe use of this device depends on proper transport, storage, installation, and appli-
cation of the device according to the warnings in this instruction manual.
²
Of particular importance are the general installation and safety regulations for work in a high-voltage
environment (for example, VDE, IEC, EN, DIN, or other national and international regulations). These
regulations must be observed.
Configuration Information
Prerequisites
For installation and connections the following conditions must be met:
The rated device data has been tested as recommended in the SIPROTEC 4 System Description and their
compliance with the Power System Data is verified.
Connection Variants
General Diagrams are shown in Appendix B Terminal Assignments. Connection examples for current trans-
former and voltage transformer circuits are provided in Appendix C Connection Examples. It must be checked
that the setting of the P.System Data 1, Section 2.1.3.1 Setting Notes, was made in accordance to the
device connections.
Currents
Appendix C Connection Examples shows current transformer connection examples in dependence on network
conditions.
For normal connection, address 220 I4 transformer = In prot. line must be set and furthermore,
address 221 I4/Iph CT = 1.000.
When using separate earth current transformers, address 220 I4 transformer = In prot. line must be
set. The setting value of the address 221 I4/Iph CT may deviate from 1. For information on the calculation,
please refer to section 2.1.3.1 Setting Notes.
Please observe that 2 CT-connection is permitted only for isolated or compensated networks.
Voltages
Connection examples for current and voltage transformer circuits are provided in Appendix C Connection
Examples.
For the normal connection the 4th voltage measuring input is not used; correspondingly the address must be
set to 210 U4 transformer = Not connected.
For an additional connection of an e-n-winding of a set of voltage transformers, the address 210 U4 trans-
former = Udelta transf. must be set. The setting value of the address Uph / Udelta depends on the
transformation ratio of the e–n-winding. For additional hints, please refer to Section 2.1.3.1 Setting Notes
under “Transformation Ratio”.
In further connection examples also the e–n winding of a set of voltage transformers is connected, in this
case, however of a central set of transformers at a busbar. For more information refer to the previous para-
graph.
3.1
3.1.1
Mounting and Commissioning
3.1 Mounting and Connections
178 SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
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