Vacon NXP series, Руководство по аппаратному обеспечению системы

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Installation vacon • 37
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4.6 Cabling
4.6.1 Grounding
PE conductors are connected to the PE busbar. The PE busbars in each section are connected (see
Figure 15 on page 34) and the PE busbars must be connected to ground.
See the grounding and ground fault protection instructions in Chapter 2.3.
4.6.2 Mains and motor connection
The power supply terminals can be reached through the bottom part of the cabinet. The mains
cables are connected to terminals L1, L2 and L3 on the main input section (see Figure 19 on
page 38). The motor cables are connected to inverter section terminals marked with U, V and W.
Make openings for the cables in the grommets on the bottom of the cabinet and lead through the
cables. Use cable clamps to fix the cables.
Use cables with a temperature rating of at least +70°C. As a rule of thumb, cables and fuses can be
dimensioned according to the frequency converter nominal output current, which you can find on
the rating plate. Dimensioning according to the output current is recommended because the
frequency converter input current never significantly exceeds the output current.
See the more detailed cabling and fuse selection instructions in the corresponding user manual
(see Chapter 1.5).
Before connecting any cables, use a multimeter to check that the cables to be
connected are not live.
Table 13. Cable types required to meet standards
Cable type
Level L
(2
nd
environment)
Level T
Mains cable 1 1
Motor cable 2 1/2*
Control cable 4 4
* Recommended
Level L = EN61800-3, 2
nd
environment
Level T = For IT networks
1 =
Power cable intended for fixed installation and the specific mains voltage. Shielded
cable not required (DRAKA NK CABLES - MCMK or similar recommended).
2 =
Symmetrical power cable equipped with concentric protection wire and intended
for the specific mains voltage (DRAKA NK CABLES - MCMK or similar
recommended).
4 =
Screened cable equipped with compact low-impedance shield (DRAKA NKCABLES
- JAMAK, SAB/ÖZCuY-O or similar).
9000.emf