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Electrical installation
4.6 Power connections
I/O interfacing
● Create a low-impedance ground connection to other cabinets, system components, and
distributed devices with the largest possible cross-section (at least 16 mm²).
● Ground unused lines at one end in the cabinet.
● Select the greatest possible distance between the power and signal cables, but at least
20 cm. The greater the distance over which the cables are routed in parallel, the greater
the clearance must be. If a sufficient clearance cannot be maintained, you must install
additional shields.
● Avoid unnecessarily long cable loops.
Filtering cables
● Line supply cables and power supply cables for devices and modules may have to be
filtered in the cabinet to reduce incoming or outgoing disturbances.
● To reduce emissions, the drive is equipped with a radio interference suppression filter as
standard (in accordance with the limits defined in category C3). Optional filters can be
fitted for use in the first environment (category C2).
Protective ground conductors
● According to NFPA70 National Electrical Code Article 250, the minimum cross-section of
the protective ground conductor must conform to the local safety regulations for
protective ground conductors for equipment with a high leakage current.
4.6
Power connections
Electric shock caused by interchanging or short-circuiting the device connections
Interchanging the power connections or short-circuiting of the DC link connections will
destroy the device, which can result in death or serious injuries.
• Do not interchange the input and output terminals of the device.
• Do not interchange or short-circuit the DC link terminals.
Note
Ground fault circuit interrupter
The device must not be operated via a ground fault circuit interrupter (EN 61800-5-1).
64
WARNING
Converter cabinet units
Operating Instructions, 11/2017, A5E36652151A
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