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.
General Diagrams
Block diagrams for the terminal assignment of the 7SJ80 are shown in Appendix B Terminal Assignments.
Connection examples for the current and voltage transformer circuits are provided in Appendix C Connection
Examples.
Voltage Connection Examples
Connection examples for voltage transformers are provided in Appendix C Connection Examples. It must be
checked that the configuration of the Power System Data 1 (Section Voltage Connection (Power System),
Page 40) corresponds with the connections.
The normal connection is set at address 213 VT Connect. 3ph = Van, Vbn, Vcn.
When connecting an open delta winding of the voltage transformer set, address 213 VT Connect. 3ph
must be set to Vab, Vbc, VGnd.
For the synchrocheck function, address 213 must be set to Vab, Vbc, VSyn or Vph-g, VSyn.
Another example shows the connection mode 213 = Vab, Vbc, Vx. The voltage connected to the third
transformer Vx is only used by the flexible protection functions.
Moreover, there are examples for the connection modes Vab, Vbc and Vph-g, VSyn.
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:
3.1
3.1.1
Mounting and Commissioning
3.1 Mounting and Connections
312 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
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