Connecting Wires To Push-In Type Connectors; Connecting Protective Earthing; Connecting Protective Earthing To Relay - ABB RELION REX640 Installation Manual

1MRS759115 A
5.2.3
5.3
5.3.1
REX640
Installation Manual
Table 4: Wire specifications for ring-lug type connectors
Connector type Wire size
Stranded
(mm²)
CT/VT 0.5...6
connectors
Signal
3)
0.13...3.3
connectors
1) Depends on the cable lug
2) Recommended ring lug connectors: C-RCI 1.5/M4 3240018, C-RCI 2.5/M4 3240023 and C-RCI 6/M4
3240027
3) For two wires 2x(0.2...1.5) mm2
4) Insulated ring lug M3, max outside diameter 8 mm

Connecting wires to push-in type connectors

Terminal blocks of push-in type are used for electrical connections.
1. Connect the wire in one of the alternative ways.
• When using stranded wire without ferrule, push the connector's release
button while inserting the wire.
• When using wire with end ferrule, insert the wire without pushing the
release button.
Table 5: Wire specifications for push-in type connectors
Connector type Wire size
Stranded
(mm²)
Signal 0.2...2.5
connectors

Connecting protective earthing

Connecting protective earthing to relay

Connect the protection relay to earth using a 16.0 mm
lead of maximum 1.5 m. Extra length is required for door mounting.
1. Using a TX30 screwdriver, loosen the protective earth screw to connect a
separate earth protection lead.
Stripping length
Crimp ferrule (mm)
(mm²)
-
1)2)
-
1)4)
Stripping
Crimp ferrule length
(mm)
(mm²)
0.2...2.5 10
Section 5
Connecting
Contact screw Anchoring
tightening screw tightening
torque (Nm) torque (Nm)
1.2...1.5 1.2
1.13 0.35
Contact screw Anchoring screw
tightening torque tightening torque
(Nm) (Nm)
- 0.2
2
flat copper cable. Use an earth
59