Danfoss VLT FC 100 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 (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.
Tightening-up Torque
Frame size 200 - 240 V 380 - 500 V 525 - 690 V Cable for: Tightening up torque
A1 0.25-1.5 kW 0.37-1.5 kW -
Mains, Brake resistor, load sharing, Motor cables
0.5-0.6 Nm
A2 0.25-2.2 kW 0.37-4 kW -
A3 3-3.7 kW 5.5-7.5 kW -
A4 0.25-2-2 kW 0.37-4 kW
A5 3-3.7 kW 5.5-7.5 kW -
B1 5.5-7.5 kW 11-15 kW - Mains, Brake resistor, load sharing, Motor cables 1.8 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
B2 11 kW 18.5-22 kW 11-22 kW Mains, Brake resistor, load sharing cables 4.5 Nm
Motor cables 4.5 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
B3 5.5-7.5 kW 11-15 kW - Mains, Brake resistor, load sharing, Motor cables 1.8 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
B4 11-15 kW 18.5-30 kW - Mains, Brake resistor, load sharing, Motor cables 4.5 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
C1 15-22 kW 30-45 kW - Mains, Brake resistor, load sharing cables 10 Nm
Motor cables 10 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
C2 30-37 kW 55-75 kW 30-75 kW Mains, motor cables
14 Nm (up to 95 mm
2
)
24 Nm (over 95 mm
2
)
Load Sharing, brake cables 14 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
C3 18.5-22 kW 30-37 kW - Mains, Brake resistor, load sharing, Motor cables 10 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
C4 37-45 kW 55-75 kW - Mains, motor cables
14 Nm (up to 95 mm
2
)
24 Nm (over 95 mm
2
)
Load Sharing, brake cables 14 Nm
Relay 0.5-0.6 Nm
Earth 2-3 Nm
Electrical Installation FC 300 Design Guide
MG.33.BD.02 - VLT
®
is a registered Danfoss trademark 157
8 8

Danfoss VLT FC 100 Specifications

General

Brand	Danfoss
Model	VLT FC 100
Category	DC Drives
Language	English