ABB Relion 670 2.0 IEC Series, Installation Manual

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proper electrical contact between the printed circuit board and the
external wiring connected to the screw terminal block.
If the IED is equipped with a test-switch of type RTXP 24, COMBIFLEX wires with
20 A sockets, 1.5mm² (AWG16) conductor area must be used to connect the auxiliary
power.
Procedure
1. Connect signals to the female connector
The conductors can be of rigid type (solid, stranded) or of flexible type.
The female connectors accept conductors with a cross section area of 0.2-2.5
mm
2
(AWG 24-14). If two conductors are used in the same terminal, the
maximum permissible cross section area is 0.2-1 mm
2
(AWG 24-18).
If two conductors, each with area 1.5 mm
2
(AWG 16) need to be connected to the
same terminal, a ferrule must be used, see figure 29 . Crimp this ferrule properly
to the wire using tools as recommended by the supplier of the ferrules. The
fastening screw shall be tightened with a torque of 0.4 Nm (This torque applies
to all binary connectors).
2. Plug the female connector to the corresponding back-side mounted male
connector
3. Lock the female connector by fastening the lock screws
xx02000742.vsd
IEC02000742 V1 EN
Figure 27: A female connector
IEC04000167 V1 EN
Figure 28: Board with male connectors
1MRK514019-UEN A
Section 6
Connecting
670 series 2.0 IEC 53
Installation manual