Connection to the AC side terminal board

10

To prevent electrocution hazards, all the connection operations must be carried out with the disconnect switch downstream of the inverter (grid side) open and locked.

For all inverter models, connection is carried out using the AC output terminal block 10 passing the cables internally through the AC cable gland 19 .

Remove the protective film located on the hole to be used for the AC cables 19 , insert the M32 cable gland in the hole and secure it using the M32 lock nut (to ensure environmental protection IP65 it is necessary to fix the cable gland to the inverter chassis with a minimum tightening torque of 8.0 Nm).

Strip 12-13 mm of sheathing from the AC grid connection cables then plug the AC line cable into the inverter, passing it through the previously installed cable gland; the maximum diameter accepted by the cable gland is from 13 to 21 mm².

The procedure for opening the contacts of AC output terminal block 10 and tightening cables is as follows: 1) Insert the WAGO screwdriver (supplied) in slot with the screwdriver facing downwards; lightly press the screwdriver from the top to the bottom; insert the screwdriver until the clamp opens. 2) Insert the cable in the clamp. 3) Remove the WAGO screwdriver.

Connect on the terminal block 10 the protective earth (yellow-green) cable to the contact labelled with the symbol, the neutral cable (normally blue) to the terminal labelled with the letter N and the phase cable to the terminal labelled with the letter L; each terminal of the terminal block accepts a cable with cross-section which can vary from 0.2 up to 10 mm².

Pay special attention and ensure you do not reverse the phase with the neutral!

Once the connection to the terminal board has been made, tighten the cable gland firmly (tightening torque 5.0Nm) and check the seal.