Mounting and Connections
General
WARNING
Warning of improper transport, storage, installation or assembly of the device.
Failure to observe these precautions can result in death, personal injury, or serious material damage.
²
Trouble-free and safe use of this device depends on proper transport, storage, installation, and
assembly of the device according to the warnings in this device manual.
²
Of particular importance are the general installation and safety regulations for work in a high-voltage
environment (for example, ANSI, 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 have been checked as recommended in the SIPROTEC 4 System Description. It has been
verified that these data comply with the power system data.
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 with the
device connections.
Currents
In Appendix C Connection Examples examples for the possibilities of the current transformer connections in
dependence on network conditions are displayed.
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 ground current transformers, address 220 I4 transformer = In prot. line must
be set. The factor 221 I4/Iph CT may deviate from 1. For calculation hints, please refer to Section
2.1.3.1 Setting Notes at “Current Transformer Connection”. Please observe that 2-CT-connection is permitted
only for isolated or compensated networks.
Voltage Connection Examples
This section is only relevant if the measured voltages are connected to the device, a condition that was already
set during the configuration (address 144 V-TRANSFORMER, see Section 2.1.1.2 Setting Notes)
Connection examples for current and voltage transformer circuits are provided in Appendix C Connection
Examples.
Binary Inputs and Outputs
The connections to the system depend on the possible allocation of the binary inputs and outputs, i.e. how
they are assigned to the system. The default settings of the device are listed in the tables in Appendix
E Default Settings and Protocol-dependent Functions. Check also that the labelings on the front correspond to
the allocated indication functions.
3.1
3.1.1
Mounting and Commissioning
3.1 Mounting and Connections
206 SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
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