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12.3
Technical specifications
Note
Notes on the technical specifications
Current, voltage and power figures in these tables are rated values.
The cables to the device are protected by fuses of operating class gG.
The cable cross-sections have been determined for three-core copper cables routed
horizontally in air at 104 °F (40 °C) ambient temperature (according to DIN VDE 0276-1000
and IEC 60364-5-52) with a permissible operating temperature of 158 °F (70 °C) (e.g.
Protodur NYY or NYCWY) and the recommended cable protection according to
DIN VDE 0100 section 430 and IEC 60364-4-43.
NOTICE
Material damage caused by impermissible cable temperatures
The improper laying of cables can produce short-circuits caused by damage of the
insulation that result from excessive temperatures.
When the conditions differ from the above stated (cable routing, cable grouping, ambient
temperature), the following instructions for routing the cables must be taken into account:
• The cable cross-section required depends on the current being conducted in the cable.
• The permissible current load capability of cables is defined in IEC 60364-5-52, for
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
example. It depends partly on ambient conditions such as temperature and partly on the
type of routing. If the cables are routed individually, they will be cooled relatively well. If
several cables are routed together, they may heat each other up. The corresponding
derating factors for these boundary conditions is provided in IEC 60364-5-52.
Technical specifications
12.3 Technical specifications
805
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