Cables; Tightening Torque - Danfoss VLT AutomationDrive FC 301 Design Manual

Electrical Installation
WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the
frequency converter properly could result in death or
serious injury.
•
Ensure correct grounding of the equipment by
a certified electrical installer.

9.2 Cables

NOTICE
Cables General
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. Copper (75 °C) conductors are
recommended.

9.2.1 Tightening Torque

Enclosure 200-240 V 380-500 V
Type [kW] [kW]
A1 0.25-1.5 0.37-1.5
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
B2 11 18.5-22
B3 5.5-7.5 11-15
B4 11-15 18.5-30
C1 15-22 30-45
C2 30-37 55-75
C3 18.5-22 30-37
C4 37-45 55-75
Table 9.1 Tightening Torque for Cables
®
VLT AutomationDrive FC 301/FC 302 Design Guide, 0.25-75 kW
525-690 V Cable for
[kW]
-
-
1.1-7.5 Mains, Brake resistor, load sharing, Motor cables
-
Mains, Brake resistor, load sharing, Motor cables
- Relay
Ground
Mains, Brake resistor, load sharing cables
Motor cables
11-22
Relay
Ground
Mains, Brake resistor, load sharing, Motor cables
- Relay
Ground
Mains, Brake resistor, load sharing, Motor cables
11-30 Relay
Ground
Mains, Brake resistor, load sharing cables
Motor cables
-
Relay
Ground
Mains, motor cables
30-75 Load Sharing, brake cables
Relay
Ground
Mains, Brake resistor, load sharing, Motor cables
37-45 Relay
Ground
Mains, motor cables
- Load Sharing, brake cables
Relay
Ground
MG33BF02 - Rev. 2013-12-20
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
2 days due to softness of the aluminium. It is crucial to
keep the connection a gas tight joint, otherwise the
aluminium surface oxidises again.
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
14 (up to 9 5mm 2 )
2
24 (over 95 mm )
14
0.5-0.6
2-3
10
0.5-0.6
2-3
2
14 (up to 95 mm )
2
24 (over 95 mm )
14
0.5-0.6
2-3
113
9 9