Electrical Installation; Connections- Frame Sizes A, B And C - Danfoss VLT AutomationDrive FC 300 Design Manual

Electrical Installation

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.
7 7
Frame size 200-240 V
[kW]
A1 0.25-1.5
A2 0.25-2.2
A3 3-3.7
A4 0.25-2.2
A5 3-3.7
B1 5.5-7.5
B2 11
B3 5.5-7.5
B4 11-15
C1 15-22
C2 30-37
C3 18.5-22
C4 37-45
Table 7.1 Tightening-up Torque
112
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®
VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
380-500 V 525-690 V Cable for
[kW] [kW]
0.37-1.5 -
0.37-4 -
5.5-7.5 - Mains, Brake resistor, load sharing, Motor cables
0.37-4
5.5-7.5 -
11-15 - Mains, Brake resistor, load sharing, Motor cables
Relay
Earth
18.5-22 11-22 Mains, Brake resistor, load sharing cables
Motor cables
Relay
Earth
11-15 - Mains, Brake resistor, load sharing, Motor cables
Relay
Earth
18.5-30 - Mains, Brake resistor, load sharing, Motor cables
Relay
Earth
30-45 - Mains, Brake resistor, load sharing cables
Motor cables
Relay
Earth
55-75 30-75 Mains, motor cables
Load Sharing, brake cables
Relay
Earth
30-37 - Mains, Brake resistor, load sharing, Motor cables
Relay
Earth
55-75 - Mains, motor cables
Load Sharing, brake cables
Relay
Earth
MG33BE02 - VLT
®
is a registered Danfoss trademark
Tightening up torque
[Nm]
0.5-0.6
1.8
0.5-0.6
2-3
4.5
4.5
0.5-0.6
2-3
1.8
0.5-0.6
2-3
4.5
0.5-0.6
2-3
10
10
0.5-0.6
2-3
2
14 (up to 9 5mm )
24 (over 95 mm 2 )
14
0.5-0.6
2-3
10
0.5-0.6
2-3
14 (up to 95 mm 2 )
2
24 (over 95 mm )
14
0.5-0.6
2-3