6.1.4
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
) which is then plugged into the corresponding male connector (see
Figure
) located at the rear of the IED. For location of BIM, BOM, SOM and IOM refer to
. Connection diagrams for BIM, BOM, SOM and IOM are shown in
Figure
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
. 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 514 030-UEN Rev. C
Section 6
Connecting
Switchgear control unit SAM600-IO
27
Installation manual
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