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

FC 300 Design Guide

8 Electrical Installation

8.1 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 (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.
Tightening-up Torque
Frame size 200–240 V 380–500 V
A1 0.34–2 hp 0.5–2 hp
[0.25-1.5 [0.37–1.5
kW] kW]
A2 0.34–3 hp 0.5–5 hp
[0.25–2.2 [0.37–4 kW]
kW]
A3 4–5 hp [3– 7.5–10 hp
3.7 kW] [5.5–7.5
kW]
A5 4–5 hp [3– 7.5–10 hp
3.7 kW] [5.5–7.5
kW]
B1 7.5–10 hp 15–20 hp
[5.5–7.5 [11–15 kW]
kW]
B2 15 hp [11 25–30 hp
kW] [18.5–22
kW]
B3 7.5–10 hp 15–20 hp
[5.5–7.5 [11–15 kW]
kW]
B4 15–20 hp 25–40 hp
[11–15 kW] [18.5–30
kW]
C1 20–30 hp 40–60 hp
[15–22 kW] [30–45 kW]
C2 40–50 hp 75–100 hp
[30–37 kW] [55–75 kW]
C3 25–30 hp 40–50 hp
[18.5–22 [30–37 kW]
kW]
C4 50–60 hp 75–100 hp
[37–45 kW] [55–75 kW]
525–690 V Cable for:
- Line power, brake resistor, load sharing, motor cables
-
-
-
- Line power, brake resistor, load sharing, motor cables
Relay
Ground
15–30 hp Line power, brake resistor, load sharing cables
[11–22 kW] Motor cables
Relay
Ground
- Line power, brake resistor, load sharing, motor cables
Relay
Ground
- Line power, brake resistor, load sharing, motor cables
Relay
Ground
- Line power, brake resistor, load sharing cables
Motor cables
Relay
Ground
40–100 hp Line power, motor cables
[30–75 kW]
Load sharing, brake cables
Relay
Ground
- Line power, brake resistor, load sharing, motor cables
Relay
Ground
- Line power, motor cables
Load sharing, brake cables
Relay
Ground
MG.33.BC.22 - VLT ® is a registered Danfoss trademark
8 Electrical Installation
Tightening torque
0.5–0.6 Nm
8
1.8 Nm
0.5–0.6 Nm
2–3 Nm
4.5 Nm
4.5 Nm
0.5–0.6 Nm
2–3 Nm
1.8 Nm
0.5–0.6 Nm
2–3 Nm
4.5 Nm
0.5–0.6 Nm
2–3 Nm
10 Nm
10 Nm
0.5–0.6 Nm
2–3 Nm
2
14 Nm (up to 0.15 in [95
mm 2 ])
24 Nm (over 0.15 in 2 [95
mm 2 ])
14 Nm
0.5–0.6 Nm
2–3 Nm
10 Nm
0.5–0.6 Nm
2–3 Nm
2
14 Nm (up to 0.15 in [95
2
mm ])
24 Nm (over 0.15 in 2 [95
mm 2 ])
14 Nm
0.5–0.6 Nm
2–3 Nm
8-1