ABB ACS580MV, Быстрое руководство

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Electrical installation 19
Cables requirements
In additional to below requirements, all electrical installations must comply with local
standards and regulations, and the cable installation must be in line with the installation
guidelines of the cable manufacture.
•
Feeder cable requirements
No special requirements from converter point of view.
•
Motor cable requirements
The table summarizes the requirements to the motor cable coming from the operation with
an ACS580MV.
In case single-phase cables are used, they need to be installed in a triangle (trefoil)
configuration.
If the overall cross section of the screen of the 3-phase system is >50% of the phase
conductor cross section, no further precautions are have to be considered.
If the overall cross section is <50%, an additional equiptential bonding conductor is
recommended in order to prevent overloading of the screen in case of potential differences
in the plant. The minimum cross section of this conductor depends on the cable length:
•
≥
50 mm
2
, for cable length < 300 m
•
≥ 95 mm
2
, for cable length > 300 m
The converter must be connected to system ground at one point. The ground point inside
the converter is referred to as Protective Earth (PE).
The cross section of the ground cable must be
≥
150 mm
2
.
The connection to system ground has to be established in compliance with local
regulations.
Cables and PE busbar between drive and integrated
transformer and drive
Cables and PE busbar between drive and integrated transformer includes the following
connections:
• Transformer primary and secondary cables.
Converter type Multi-level converter isolated from ground
Motor rated voltage (fundamental) 6.0kV/6.3kV/6.6kV/10.0kV/10.5kV/11kV
Cable insulation U0/U(Um), based on
IEC60502-2, Categories A and B Motor voltage 6/6.3/6.6kV:
3.6/6(7.2)
Motor voltage 10/10.5/11kV:
6/10(12)
Max. cable length 600 m
Max. number of parallel cables 2 (limited by terminals)
Special derating factors For operation above 100 Hz, please consult reference
[3] for skin effect
Derating due to converter operation 1.0
1