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69 - PVD 3664_GB_NK-November 2016.Docx
3.7. Power Electrical Connections
3.7.1. Wires sizes
In every country, you must respect all the local electrical installation
regulations and standards.
Not limiting example in France: NFC 15-100 or IEC 60364 as well in Europe.
Cable selection depends on the cable construction, so refer to the
cable technical documentation to choose wire sizes
Some drives have cable limitations or recommendations; please refer
to the drive technical documentation for any further information.
Cable selection
At standstill, the current must be limited at 80% of the low speed
current I
o
and cable has to support peak current for a long period. So,
if the motor works at standstill, the current to select wire size is

2 x 0.8 Io

1,13 x I
o
.
Sizes for H07 RN-F cable, for a 3 cores in a cable tray at 30°C max
Section I
max
[mm²] [A
rms
]
1.5 17
2.5 23
4 31
6 42
10 55
16 74
25 97
35 120
50 146
70 185
95 224
120 260
150 299
185 341
240 401
300 461