ABB Relion 670 series, Installation Manual

Page: 59 / 112

6.1.5 Connecting the binary input and output signals
M11992-9 v8
Auxiliary power and signals are connected using voltage connectors. Signal wires
are connected to a female connector (see Figure
27 ) which is then plugged into the
corresponding male connector (see Figure 28 ) located at the rear of the IED. For
location of BIM, BOM, SOM and IOM refer to section "Rear side connectors" .
Connection diagrams for BIM, BOM, SOM and IOM are shown in Figure 17 ,
Figure 21 , Figure 22 and Figure 23 .
Do not insert anything else to the female connector but the
corresponding male connector. Inserting anything else (such as a
measurement probe) may violate the female connector and prevent
a 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 (keep stripping length of the cable to minimum 10 mm). 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
1MRK 514 026-UEN B
Section 6
Connecting
670 series 2.2 IEC 53
Installation manual