Installation
9229 0025 176 0E 53
2021-11-15
Electrical connection of the main conductors
Checking the vacuum circuit-breaker in the panel with applied high voltage is al-
lowed only after full functionality has been determined (see “Commissioning”, on
page 69).
Preparing the contact surfaces
Clean copper-plated and silver-plated connecting surfaces with a cloth; do not
brush.
Different connection materials (aluminium/copper) must not be cleaned with the
same cleaning tools.
Silver-plated parts must not be bolted to aluminium bars!
Use a steel brush to brush contact surfaces of the conductor bars (cross-wise) until
they are bright and wipe off any residue using a clean cloth.
After cleaning, very lightly grease the bright contact areas with acid-free Vaseline
(e. g. Shell Vaseline 8420) and screw together immediately.
Fig. 79 Cleaning the connecting surfaces Fig. 80 Cleaning the connecting surfaces of the con-
ductor bars
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