Section 5 Connecting; Required Tools; Connecting Wires; Connecting Protective Grounding - ABB RELION REF615R Installation Manual

1MRS240046-IB B
Section 5
5.1
5.2
5.3
REF615R
Installation Manual
Connecting

Required tools

Only use a screwdriver and insert bits for Phillips (PH 2) cross-recessed head screws when
handling terminals of screw-compression type.

Connecting wires

All connections are made on the rear of the case suitable for ring-lug connection. No
soldering is needed.
• Connect each signal connector terminal with one 14 or 16 Gauge wire. Use 12 or 14
Gauge wire for CB trip circuit.
• Connect each ring-lug terminal for CTs/VTs with one 12 Gauge wire.
See the application manual for product-specific connection diagrams.

Connecting protective grounding

The ground lead must be at least a 10 Gauge wire. If the ground lead is
long, the cross section of the wire must be increased.
Use fine copper wire as the ground lead.
1. Loosen the protective ground screw to connect a separate ground protection lead.
Section 5
Connecting
23