Prior to installing conductors on terminal complete the following procedure to
make terminals ready for connections.
For each of the AC terminals (L1, L2, L3, PE):
Tighten/Lose nuts with 17mm socket. If an electric socket is utilized insure the
torque setting is low enough to NOT OVER-TORQUE the screw. Once nut
bottoms out, do not turn it any further.
3.4.4 AC Side –Prewire Set-Up
Extreme temperature rise at the clamping point
If the contact resistance between the aluminum conductor and clamping point is too
high, the clamping point can become very hot and even catch fire in extreme cases.
To ensure a safe and reliable contact, always perform the following work steps:
Please select the Al wire size according to rules due to lower conductivity of Al.
Keep the installation location as free as possible from moisture or corrosive
atmospheres.
Connect the aluminum cables quickly.
Tighten the clamping screw in the clamping body with the maximum permissible
tightening torque.
NOTICE
33
Installation
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