Danfoss VLT AutomationDrive FC 300 Series - 7 Electrical Installation; Connections- Frame Sizes A, B and C

7 Electrical Installation
7.1 Connections- Frame Sizes A, B and C
NOTE
Cables General
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper (75°C)
conductors are recommended.
Aluminium Conductors
Terminals 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 tight joint, otherwise the aluminium surface will oxidize again.
Frame size 200-240 V
[kW]
380-500 V
[kW]
525-690 V
[kW]
Cable for Tightening up torque
[Nm]
A1 0.25-1.5 0.37-1.5 -
Mains, Brake resistor, load sharing, Motor cables
0.5-0.6
A2 0.25-2.2 0.37-4 -
A3 3-3.7 5.5-7.5 -
A4 0.25-2.2 0.37-4
A5 3-3.7 5.5-7.5 -
B1 5.5-7.5 11-15 - Mains, Brake resistor, load sharing, Motor cables 1.8
Relay 0.5-0.6
Earth 2-3
B2 11 18.5-22 11-22 Mains, Brake resistor, load sharing cables 4.5
Motor cables 4.5
Relay 0.5-0.6
Earth 2-3
B3 5.5-7.5 11-15 - Mains, Brake resistor, load sharing, Motor cables 1.8
Relay 0.5-0.6
Earth 2-3
B4 11-15 18.5-30 - Mains, Brake resistor, load sharing, Motor cables 4.5
Relay 0.5-0.6
Earth 2-3
C1 15-22 30-45 - Mains, Brake resistor, load sharing cables 10
Motor cables 10
Relay 0.5-0.6
Earth 2-3
C2 30-37 55-75 30-75 Mains, motor cables
14 (up to 9 5mm
2
)
24 (over 95 mm
2
)
Load Sharing, brake cables 14
Relay 0.5-0.6
Earth 2-3
C3 18.5-22 30-37 - Mains, Brake resistor, load sharing, Motor cables 10
Relay 0.5-0.6
Earth 2-3
C4 37-45 55-75 - Mains, motor cables
14 (up to 95 mm
2
)
24 (over 95 mm
2
)
Load Sharing, brake cables 14
Relay 0.5-0.6
Earth 2-3
Table 7.1 Tightening-up Torque
Electrical Installation
VLT
®
AutomationDrive FC 300 Design Guide, 0.25-75 kW
112 MG33BE02 - VLT
®
is a registered Danfoss trademark
77
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