EN / ACS800-31/U31 Hardware Manual - Simark Controls

61Connecting the power cablesDiagramDrive1)PE2)INPUTU1 V1 W1UDC+ UDC-OUTPUTU2 V2 W23)4)For alternatives, seePlanning the electricalinstallation:Disconnecting device(disconnecting means)(PE) PE (PE)L1 L2 L3U1 V13 ~MotorW15)1), 2)If shielded cable is used (not required butrecommended), use a separate PE cable (1) or acable with a grounding conductor (2) if theconductivity of the input cable shield is < 50% of theconductivity of the phase conductor.Ground the other end of the input cable shield or PEconductor at the distribution board.3) 360 degrees grounding recommended if shieldedcable is used4) 360 degrees grounding requiredGrounding of the motor cable shield at the motor endFor minimum radio frequency interference:• ground the cable shield 360 degrees at the lead-through ofthe motor terminal boxConductive gaskets360 degrees grounding• or ground the cable by twisting the shield as follows:flattened width > 1/5 · length.b > 1/5 · a5) Use a separate grounding cable if the conductivity ofthe cable shield is < 50% of the conductivity of thephase conductor and there is no symmetricallyconstructed grounding conductor in the cable (seePlanning the electrical installation / Selecting thepower cables).abNote:If there is a symmetrically constructed groundingconductor in the motor cable in addition to theconductive shield, connect the grounding conductor tothe grounding terminal at the drive and motor ends.Do not use an asymmetrically constructed motor cablefor motors > 30 kW (40 HP). Connecting its fourthconductor at the motor end increases bearing currentsand causes extra wear.Electrical installation