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6.3.4. Auxiliary circuit connection (Figure 72)
After fixing and coupling the switchgear cubicle
groups, connect the auxiliary interconnections.
The auxiliary connection wires, fitted with female
faston terminals and detached from the terminal box
of the coupling cubicle, are rolled up and temporarily
placed next to the cubicle.
In order to find the right terminals to be connected to
them, all the wires have a small ring with two
numbers. The first shows the relevant cubicle, the
second the terminal number. In case of doubt, refer to
the “Panel interconnections” wiring diagram, which
shows the terminal boxes of the inter-panel
connections - marked with code XC- of all the
switchgear cubicles.
Each terminal shown has the indication for connection
of the wires between the various cubicles.
An example of connection
Code 2/1 (terminal 1-terminal box XC of cubicle 3)
shows that terminal 1 must be connected to terminal
box XC of cubicle 2 terminal 1.
Code 4/1 (terminal 1-terminal box XC of cubicle 3)
shows that terminal 1 must also be connected to
terminal box XC of cubicle 4 terminal 1.
The XC terminal box position is indicative, and must
be checked with the relevant cubicle wiring diagram.
To connect the auxiliary circuits, refer to the wiring
diagram of each cubicle. Each cubicle has a terminal
box for receiving the external connecting wires.
This type of terminal box is usually equipped with
screw terminals for receiving connecting wires without
terminals. For other types of auxiliary circuit
connections, follow the instructions contained in the
order acknowledgement.
Figure 72: Example of identification of panel interconnections.
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