Mounting And Connections; Configuration Information - Siemens siprotec SJ62 User Manual

3 Mounting and Commissioning
3.1

Mounting and Connections

General
3.1.1

Configuration Information

Prerequisites
General Diagrams
Connection Exam-
ples for 7SJ62
365
WARNING!
Warning of improper transport, storage, installation, and application of the
device.
Failure to observe these precautions can result in death, personal injury, or serious
material damage.
Trouble free and safe use of this device depends on proper transport, storage, instal-
lation, 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 environment (for example, ANSI, IEC, EN, DIN, or other national and
international regulations). These regulations must be observed.
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 these data is verified with the Power System
Data.
General diagrams for the 7SJ62/63/64 device range are shown in Appendix A.2. Con-
nection examples for the current and voltage transformer circuits are given in the Ap-
pendix . The setting configuration of the Power System Data 1, Section 2.1.3, should
be checked to ensure that they correspond to the connections to the device.
Connection examples for current and voltage transformer circuits are provided in Ap-
pendix A.3. The device can either be connected with three phase–ground voltages
(connection mode VT Connect. 3ph = Van, Vbn, Vcn), or with two phase–phase
voltages and V (also called the displacement voltage) from open delta VTs as (con-
delta
nection mode VT Connect. 3ph = Vab, Vbc, VGnd). For the latter, only two
phase–phase voltages or the displacement voltage V
device settings the appropriate voltage connection must be entered under address
213, in P.System Data 1.
As the voltage inputs of the 7SJ62 device have an operating range from 0 to 170 V,
this means that phase-to-phase voltages can be assessed in connection of phase-to-
ground voltages up to √3 · 170 V = 294 V, in the latter case up to 170 V.
If there is only one voltage transformer on the system side, wiring is performed accord-
ing to examples on single-phase connection. For this case, address 240 VT
Connect. 1ph in the P.System Data 1 specifies to the device which primary
voltage is connected to which analog input.
can be connected. In the
delta
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015