5 Planning the installation
Planning the grid connection (AC)
40
Installation and Operation Manual M50A_260 RPI503M260000 Product version L and M EU V1.3 EN 2023-08-14
NOTICE
To ensure a safe and reliable contact with alumi-
num conductors, always perform the following
work steps:
► Keep the installation location as free
as possible from moisture or corrosive
atmospheres.
► Connect the aluminum cables quickly.
► Clean the stripped end of the aluminum
conductor mechanically (for example,
using a knife blade to scrape o the oxide
layer), then immediately dip the aluminum
conductor into acid-fee and alkaline-free (=
neutral) Vaseline and straight away insert it
into the Al-Cu compression joint.
5.4.8.7 Instructions for the use of sector-shaped aluminum
cables
When using sector-shaped aluminum cables without Al-Cu
compression joints, insert each cable into the clamping point as
shown in the picture.
Al se
Fig. 5.19: Correct position of sector-shaped aluminum cables
(1)
Fig. 5.20: Correct position of sector-shaped aluminum cables
(2)
When using sector-shaped aluminum cables with Al-Cu compres-
sion joints (e.g. from Klauke, Elpress or Mecatraction), observe
the following instructions.
► Select compression joints suitable for the type of cable that
is used.
► Comply with the installation instructions issued by the man-
ufacturer of the compression joints.
► Always use heat-shrink sleeving.
► Secure the cables with an external strain relief element.
Fig. 5.21: Al-Cu compression joint and heat-shrink sleeving for
sector-shaped aluminum cables
5.4.9 Special tools required
Use an insulated torque wrench.
Fig. 5.22: Use an insulated torque spanner for an AC terminal
block
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