3.3. Electrical Installation
NOTE
Cables General
All cabling must comply with national and local regulations on cable cross-sections
and ambient temperature. Copper (140°-167° F [60°/75° C]) conductors are rec-
ommended.
Aluminum Conductors
Terminals can accept aluminum conductors, but the conductor surface must 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 the softness of the
aluminum. It is crucial to keep the connection a gas-tight joint, otherwise the aluminum surface
will oxidize again.
Tightening-up Torque
AFD size 200-240 V 380-500 V 525-690 V Cable for: Tightening torque
A1 0.33-2 hp
[0.25-1.5 kW]
0.5-2 hp
[0.37-1.5 kW]
- Line, brake resistor, load
sharing, motor cables
0.5-0.6 Nm
A2 0.33-3 hp
[0.25-2.2 kW]
0.5-5 hp
[0.37-4 kW]
1-5 hp [0.75-4
kW]
A3 4-5 hp [3-3.7
kW]
7.5-10 hp
[5.5-7.5 kW]
7.5-10 hp
[5.5-7.5 kW]
A5 4-5 hp [3-3.7
kW]
7.5-10 hp
[5.5-7.5 kW]
1-10 hp
[0.75-7.5 kW]
B1 7.5-10 hp
[5.5-7.5 kW]
15-20 hp
[11-15 kW]
- Line, brake resistor, load
sharing, motor cables
1.8 Nm
Relay 0.5-0.6 Nm
Ground 2-3 Nm
B2 11 kW 25-30 hp
[18.5-22 kW]
- Line, brake resistor, load
sharing cables
4.5 Nm
Motor cables 4.5 Nm
Relay 0.5-0.6 Nm
Ground 2-3 Nm
C1 20-30 hp
[15-22 kW]
40-60 hp
[30-45 kW]
- Line, brake resistor, load
sharing cables
10 Nm
Motor cables 10 Nm
Relay 0.5-0.6 Nm
Ground 2-3 Nm
C2 40-50 hp
[30-37 kW]
75-100 hp
[55-75 kW]
- Line, brake resistor, load
sharing cables
14 Nm
Motor cables 10 Nm
Relay 0.5-0.6 Nm
Ground 2-3 Nm
D1, D3 - 125-150 hp
[90-110 kW]
150-200 hp
[110-132 kW]
Line, motor cables 19 Nm
Load sharing, brake cables 9.5 Nm
Relay 0.5-0.6 Nm
Ground 19 Nm
D2, D4 - 200-300 hp
[132-200 kW]
250-450 hp
[160-315 kW]
Line, motor cables 19 Nm
Load sharing, brake cables 9.5 Nm
Relay 0.5-0.6 Nm
Ground 19 Nm
E1, E2 - 350-550 hp
[250-400 kW]
500-750 hp
[355-560 kW]
Line, motor cables 19 Nm
Load sharing, brake cables 9.5 Nm
Relay 0.5-0.6 Nm
Ground 19 Nm
VLT
®
AutomationDrive FC 300 Instruction
Manual
3. How to Install
MG.33.A9.22 - VLT is a registered Danfoss trademark
21
3
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