Danfoss VLT AutomationDrive FC 300 Operating Instructions Manual

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3.3 Electrical InstallationNB!Cables GeneralAll cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper (60/75°C) con-ductors are recommended.Aluminium ConductorsTerminals can accept aluminium conductors but the conductor surface has to be clean and the oxidation must be removed and sealed by neutral acid-free Vaseline grease before the conductor is connected.Furthermore the terminal screw must be retightened after two days due to softness of the aluminium. It is crucial to keep the connection a gas tightjoint, otherwise the aluminium surface will oxidize again.Tightening-up TorqueFrame size 200 - 240 V 380 - 500 V 525 - 690 V Cable for: Tightening up torqueA1 0.25-1.5 kW 0.37-1.5 kW - Mains, Brake resistor, load sharing, Motor cables 0.5-0.6 NmA2 0.25-2.2 kW 0.37-4 kW 0.75-4 kWA3 3-3.7 kW 5.5-7.5 kW 5.5-7.5 kWA5 3-3.7 kW 5.5-7.5 kW 0.75-7.5 kWB1 5.5-7.5 kW 11-15 kW - Mains, Brake resistor, load sharing, Motor cables 1.8 NmRelay 0.5-0.6 NmEarth 2-3 NmB2 11 kW 18.5-22 kW - Mains, Brake resistor, load sharing cables 4.5 NmMotor cables 4.5 NmRelay 0.5-0.6 NmEarth 2-3 NmB3 5.5-7.5 kW 11-15 kW - Mains, Brake resistor, load sharing, Motor cables 1.8 NmRelay 0.5-0.6 NmEarth 2-3 NmB4 11-15 kW 18.5-30 kW - Mains, Brake resistor, load sharing, Motor cables 4.5 NmRelay 0.5-0.6 NmEarth 2-3 NmC1 15-22 kW 30-45 kW - Mains, Brake resistor, load sharing cables 10 NmMotor cables 10 NmRelay 0.5-0.6 NmEarth 2-3 NmC2 30-37 kW 55-75 kW - Mains, motor cables 14 Nm (up to 95 mm2 )24 Nm (over 95 mm2 )Load Sharing, brake cables 14 NmRelay 0.5-0.6 NmEarth 2-3 NmC3 18.5-22 kW 30-37 kW - Mains, Brake resistor, load sharing, Motor cables 10 NmRelay 0.5-0.6 NmEarth 2-3 NmC4 37-45 kW 55-75 kW - Mains, motor cables 14 Nm (up to 95 mm2 )24 Nm (over 95 mm2 )Load Sharing, brake cables 14 NmRelay 0.5-0.6 NmEarth 2-3 Nm3.3.1 Removal of Knockouts for Extra Cables1. Remove cable entry from the frequency converter (Avoiding foreign parts falling into the frequency converter when removing knockouts)2. Cable entry has to be supported around the knockout you intend to remove.3. The knockout can now be removed with a strong mandrel and a hammer.4. Remove burrs from the hole.5. Mount Cable entry on frequency converter.3 How to InstallVLT®AutomationDrive FC 300 OperatingInstructions16 MG.33.AC.02 - VLT is a registered Danfoss trademark3