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Mounting and Commissioning
3.1 Mounting and Connections
3.1
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.
Trouble free and safe use of this device depends on proper transport, storage, installation, and application of
the device according to the warnings in this instruction manual.
Of particular importance are the general installation and safety regulations for work in a high-voltage environ-
ment (for example, VDE, IEC, EN, DIN, or other national and international regulations). These regulations must
be observed.
3.1.1
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 A.2. Connection examples for current transformer and voltage trans-
former circuits are provided in Appendix A.3. It must be checked that the setting of the P.System Data 1,
Section 2.1.3.1 2.1.2.1, was made in accordance to the device connections.
Currents
In Appendix A.3 examples for the possibilities of the current transformer connections in dependence on
network conditions are displayed.
For normal connection, address 220 I4 transformer = must be set and furthermore address 221 I4/Iph
CT = .
When using separate earth current transformers, address 220 I4 transformer = must be set. The factor
221 I4/Iph CT may deviate from 1. For calculation hints, please refer to Section 2.1.3.1 at "Current connec-
tions". 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 A.3.
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
transformer = Udelta transf. must be set. The setting value of the address 211 Uph / Udelta
depends on the transformation ratio of the e–n-winding. For additional hints, please refer to Section 2.1.3.1
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 paragraph.
180
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
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