Connecting Ring-Lug Type Wires; Connecting Protective Earthing - ABB Relion 611 Series Installation Manual

Section 5
Connecting
5.2.1
5.3
36
See the application manual for product-specific connection diagrams.

Connecting ring-lug type wires

Ring-lug type insulated terminal can be used for signal connector X120. The
maximum outside diameter for the M4 ring-lug type terminals is 9 mm.

Connecting protective earthing

The earth lead must be at least 6.0 mm
cross section of the wire must be increased.
Use fine copper wire as the earth lead.
1. Loosen the protective earth screw (T20) to connect a separate earth protection
lead.
1MRS757452 D
2
. If the earth lead is long, the
611 series
Installation Manual