Electrical installation
93
Connecting the input power cable
Connection diagram
A connection diagram of frame R7i and R8i units is shown below. The input cable
connection for frames 2×R8i and up is similar.
Connection procedure
WARNING! Follow the instructions in chapter Safety instructions. Ignoring the
instructions can cause physical injury or death, or damage to the equipment.
Note: Before making the cable connections, check that the input of the auxiliary
voltage transformer (T10) is selected correctly according to the supply voltage.
1. Open the door of the cabinet.
2. Remove any shrouds that protect the input busbars and cable entries.
3. Lead the cables into the inside of the cubicle. It is recommended to apply 360°
grounding of the cable shields at the entry as shown below.
PE
L1
L2
L3
1)
Incoming cubicle
Notes:
1)
Input power connection: L1, L2, L3 and PE. To be wired by the user.
For selection of input power cables, see page 74.
For the input power cable terminal sizes, tightening torques and cabinet lead-through sizes, see
section Terminal and lead-through data for the input power cable on page 155.
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