K&R GT600-4T132G User Manual page 61

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Cable specification and installation of all cables connected to the drive output U, V, W
must comply with local safety regulations and relevant IEC standards.
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To avoid risk of equipment damage or operating faults, do not connect capacitor or
surge absorber to the output side of the AC drive.
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Long motor cables can contribute to electrical resonance caused by distributed
capacitance and inductance. In some cases, this might cause equipment damage in
the drive, in motor or in cables. To avoid these problems, install an AC output reactor
close to the drive if cable is longer than about 100 m.
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If the cable support bracket is not used, screen/shield has to be directly grounded to
the grounding (PE) terminal. Ensure pig tail of screen/shield is as short as possible.
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Grounding (PE) Connection
Electrical Shock Hazard. Ensure the protective earthing conductor complies
WARNING
with technical standards and local safety regulations. Because the leakage
current exceeds 3.5 mA in all models, IEC 61800-5-1 states that either the
power supply must be automatically disconnected in case of discontinuity of
the protective earthing conductor or a protective earthing conductor with a
cross-section of at least 10 mm
to comply may result in death or serious injury.
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For personal safety and reliability of the equipment, it is important to connect ground
(PE) terminal to an effective electrical ground. Resistance value of the ground cable
must be less than 10 Ω.
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Do not connect the grounding (PE) terminal of the drive to neutral conductor of the
power system.
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Protective grounding conductor must be able to carry large short-term current that
might arise if a fault occurs.
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Use proper grounding cable with yellow/green insulation for protective grounding
conductor.
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Ground the shield.
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It is recommended that the drive be installed on a metal mounting surface.
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Install filter and drive on the same mounting surface and ensure filtering effect.
b ≥ 1/5· a
b
a
2 2
(Cu) or 16 mm (Al) must be used. Failure
3. Electrical Installation
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