ABB Relion 670 series, Installation And Commissioning Manual

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en05000509.vsd
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IEC05000509 V1 EN
Figure 33: Rear view of IED showing earthing points.
Pos Description
1 Main protective earth to chassis
2 Earthing screw to Power supply module (PSM)
3 Earthing screw to Transformer input module (TRM). (There is one
earth connection per TRM)
Use the main protective earth screw (1) for connection to the
stations earthing system. Earthing screws for PSM module (2) and
TRM module (3) must be fully tightened to secure protective earth
connection of these modules.
5.4.3 Connecting the power supply module
The wiring from the cubicle terminal block to the IED terminals (see figure 27 for
PSM connection diagram) must be made in accordance with the established
guidelines for this type of equipment. The wires from binary inputs and outputs and
the auxiliary supply must be routed separately from the current transformer cables
between the terminal blocks of the cubicle and the IED's connections. The
connections are made on connector X11. For location of connector X11, refer to
section
"Rear side connectors" .
Section 5
1MRK 502 029-UEN A
Installing the IED
60
Installation and commissioning manual