Danfoss VLT AutomationDrive FC 301 Series Design Manual page 126

Electrical Installation
9.2 Cables
NOTICE!
Cables General
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper
(167 °F [75 °C]) conductors are recommended.
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 softness of the aluminum. It is crucial to keep
the connection a gas-tight joint; otherwise, the aluminum surface will oxidize again.
9.2.1 Tightening Torque
Enclosure 200–240 V
Type (hp [kW])
0.34–2
A1
[0.25–1.5]
0.34–3
A2
[0.25–2.2]
4–5
A3
[3–3.7]
9 9
0.34–3
A4
[0.25–2.2]
4–5
A5
[3–3.7]
7.5–10
B1
[5.5–7.5]
B2 11
7.5–10
B3
[5.5–7.5]
15–20
B4
[11–15]
20–30
C1
[15–22]
40–50
C2
[30–37]
25–30
C3
[18.5–22]
50–60
C4
[37–45]
Table 9.1 Tightening Torque for Cables
124
Design Guide
380–500 V 525–690 V Cable for
[kW] (hp [kW])
0.5–2 [0.37–
-
1.5]
0.5–5
-
[0.37–4]
7.5–10 1.5–10
Line power, brake resistor, load sharing, motor cables
[5.5–7.5] [1.1–7.5]
0.5–5
[0.37–4]
7.5–10
-
[5.5–7.5]
Line power, brake resistor, load sharing, motor cables
15–20
- Relay
[11–15]
Ground
Line power, brake resistor, load sharing cables
Motor cables
18.5–22 11–22
Relay
Ground
Line power, brake resistor, load sharing, motor cables
15–20
- Relay
[11–15]
Ground
Line power, brake resistor, load sharing, motor cables
25–40 15–40
Relay
[18.5–30] [11–30]
Ground
Line power, brake resistor, load sharing cables
Motor cables
40–60
-
[30–45] Relay
Ground
Line power, motor cables
75–100 40–100
Load sharing, brake cables
[55–75] [30–75]
Relay
Ground
Line power, brake resistor, load sharing, motor cables
40–50 50–60
Relay
[30–37] [37–45]
Ground
Line power, motor cables
75–100
-
Load sharing, brake cables
[55–75]
Relay
Ground
Rev. 2014-04-04 All rights reserved.
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 95 mm 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
MG33BF22