Danfoss VACON NXP FI10, Operating Manual

Page: 34 / 172

6 Electrical Installation
6.1 Cable Connections
The power cables are connected to terminals B+ and B- and the motor cables to terminals U/T1, V/T2, and W/T3.
For principal connection diagrams, see 12.3 Principal Connection Diagrams .
For EMC-compliant installation, see 6.3 EMC-compliant Installation .
6.1.1 General Cable Requirements
Use cables with a minimum heat resistance of +70 °C (158 °F). In the selection of the cables and the fuses, refer to the nominal output
current of the drive. Find the nominal output current on the nameplate.
For information on how to make the cable installation to comply with the UL standards, see 6.1.2 UL Standards on Cabling .
If the motor temperature protection of the drive (see VACON
®
All in One Application Manual) is used as an overload protection, select
the cable to agree with the protection.
These instructions are valid only for processes that have 1 motor and 1 cable connection from the AC drive to the motor. In other
conditions, speak to the manufacturer to get more information.
6.1.2 UL Standards on Cabling
To comply with the UL (Underwriters Laboratories) regulations, use a UL-approved copper wire with a minimum heat resistance of
60 °C or 75 °C (140 °F or 167 °F).
Use Class 1 wire only.
The integral solid-state short-circuit protection does not give a branch circuit protection. To get the branch circuit protection, obey the
National Electric Code and any additional local codes. Only fuses give the branch circuit protection.
For the tightening torques of the terminals, see 12.5 Tightening Torques of the Terminals .
6.1.3 Cable Selection and Dimensioning
Find the typical sizes and types of cables used with the inverter in the tables in 12.4.2 Cable Sizes for 465–800 V DC (380–500 V AC) and
12.4.5 Cable Sizes for 640–1100 V DC (525–690 V AC) . In the selection of cables, refer to local regulations, cable installation conditions,
and cable specification.
The dimensions of the cables must comply with the requirements of the standard IEC60364-5-52.
• The cables must be PVC-isolated.
• The maximum ambient temperature is +30 °C.
• The maximum temperature of the cable surface is +70 °C.
• Use only cables with a concentric copper shield.
• The maximum number of parallel cables is 9.
When using parallel cables, make sure to obey the requirements of the cable cross-sections.
Electrical Installation
Operating Guide | VACON® NXI Inverters FI9-FI14
AQ304441431479en-000101 / DPD00909
34 | Danfoss A/S © 2019.11