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Operating Guide | VACON® NX Inverters FI4-FI8
6.1.1 General Cable Requirements
Use cables with a minimum heat resistance of +60 °C (140 °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
If the motor temperature protection of the drive (see VACON
the cable to agree with the protection. If 3 or more cables are used in parallel for larger AC drives, use a separate overload protection
for each cable.
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
6.1.3 Cable Selection and Dimensioning
Find the typical sizes and types of cables used with the inverter in the tables in
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 cross-sectional area and the maximum number of cables.
For important information on the requirements of the grounding conductor, see
For the correction factors for each temperature, see the standard IEC60364-5-52.
6.1.4 Cable Selection and Dimensioning, North America
Find the typical sizes and types of cables used with the AC drive in the tables in
refer to local regulations, cable installation conditions, and cable specification.
The dimensions of the cables must comply with the requirements of the National Electric Code (NEC) and the Canadian Electric
Code (CEC).
Danfoss A/S © 2019.07
®
All in One Application Manual) is used as an overload protection, select
12.6 Tightening Torques of the
6.1.2 UL Standards on
Terminals.
12.3 Cable and Fuse
Sizes. In the selection of cables,
6.2
Grounding.
12.3 Cable and Fuse
Sizes. In the selection of cables,
AQ299433367205en-000101 / DPD00908| 37
Electrical Installation
Cabling.
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