Hyundai N800 Series, Installation Manual

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4. POWER CABLING
The dimensions of the cables must agree with the requirements of the Underwriters Laboratories UL508C.
• The cables must be PVC-isolated.
• The maximum ambient temperature is +30 °C (86 °F).
• The maximum temperature of the cable surface is +70 °C (158 °F).
• Use only cables with a concentric copper shield.
• The maximum number of parallel cables is 9.
When you use parallel cables, make sure that you obey the requirements of the crosssectional area and the maximum number
of cables.
For important information on the requirements of the earth conductor, see the Underwriters Laboratories standard UL508C.
For the correction factors for each temperature, see the instructions of the Underwriters Laboratories UL508C.
4.4 BRAKE RESISTOR CABLES
N800A AC drives have terminals for an optional external brake resistor. These terminals are identified with R+ and R- (in MR4,
MR5, MR6) or DC+/R+ and R- (in MR7, MR8, MR9). You can find the dimensions that we recommend for the brake resistor
cables in the tables in chapters 4.3.1 Cable and fuse sizes and 4.3.2 Cable and fuse sizes, North America.
See the brake resistor ratings in chapter 7.1.4 Brake resistor ratings.
NOTE!
The frames MR7, MR8, and MR9 have the brake chopper, only if their type designation code has the code +DBIN.
The frames MR4, MR5, and MR6 have the brake chopper as standard.
4.5 PREPARING FOR THE CABLE INSTALLATION
• Before you start, make sure that none of the components of the AC drive is live. Read carefully the warnings in chapter 1
Safety.
• Make sure that the motor cables are sufficiently far from other cables.
• If it is possible, do not put the motor cables in long parallel lines with other cables.
• If the motor cables are in parallel with other cables, obey the minimum distances.
• The distances are also valid between the motor cables and the signal cables of other systems.
• The maximum lengths of shielded motor cables are 100 m (for MR4), 150 m (for MR5 and MR6), and 200 m (for MR7, MR8,
and MR9).
• The motor cables must cross other cables at an angle of 90°.
• If the cable insulation checks are necessary, see chapter 6.4 Measuring the cable and motor insulation for instructions.
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