Connecting Wires To Screw-Compression Type Connectors; Connecting Wires To Ring-Lug Type Connectors - ABB RELION REX640 Installation Manual

Connecting
5.2.1

Connecting wires to screw-compression type connectors

Terminal blocks of screw-compression type are used for electrical connections.
1.
2.
Table 4: Wire specifications for screw-compression type connectors
Connector
type
CT/VT
connectors
Signal
connector
Serial
EIA-485
/IRIG-B
connector
5.2.2

Connecting wires to ring-lug type connectors

Terminal blocks of ring-lug type are used for electrical connections.
1.
2.
1
In case of insulated crimp ferrules, TWIN ferrules need to be used with daisy chain requirement 2
× 2.5 mm² (AWG 14), two conductors without crimp ferrule with the same cross section 0.14...1.5
mm² (AWG 26-16)
2
For two wires 2 × 0.2...1.5 mm² (AWG 24-16)
68
Open the screw terminal before inserting a wire into it for the first time. To
open the screw terminal, turn the fixing screw anti-clockwise until the terminal
hole is wide open (the inside of the terminal hole is surrounded by metal).
Insert the wire and turn the fixing screw clockwise until the wire is firmly fixed.
Wire size
Stranded Crimp ferrule
0.14...6 0.25...4 mm²
mm²
(AWG 24-12)
(AWG
26-10)
0.2...4 mm² 0.2. 2.5 mm²
(AWG (AWG 24-14)
24-12)
0.2. 1.0 0.13...0.34
mm²
mm² (AWG
(AWG 26-22)
24-17)
Connect a suitable ring lug to the cable.
Remove the contact screws from the connector, thread the ring-lug cable lug to
the terminal screw and tighten the screw.
Stripping Contact
length screw
tightening
torque
9 mm 0.6. 0.8 Nm
(0.3543 in)
1
(0.4425...0.
5900 ft-lb)
7 mm 0.4. 0.5 Nm
(0.2756 in)
2
(0.2950...0.
3688 ft-lb)
7...8 mm -
(0.2756...0.
3150 in)
1MRS759115 E
Connector
fixing screw
tightening
torque
1.2 Nm
(0.8851 ft-lb)
0.2 Nm
(0.1475 ft-lb)
0.2 Nm
(0.1475 ft-lb)
REX640
Installation Manual