Requirements for the connection cables
Instruction handbook bmaXX 5000
Document No.: 5.09021.19 Baumüller Nürnberg GmbH
134
of 346
7.4
An operation on an IT-system or grounded phase conductor system (Grounded Delta) at
installation altitudes > 2000 m is only possible with an isolating transformer.
Figure 60: Connecting to IT-system or grounded phase conductor system with isolating transformer
7.4 Requirements for the connection cables
h Take into account IEC/EN 60204-1, chapter 13 when selecting the cable.
h The protective ground cross section of the cable must be compliant with IEC/
EN 60204-1, Section 5.2, Tab. 1.
h A fixed connection for the protective ground conductor is mandatory required for oper-
ation of the device.
h Use copper cable approved for a minimum of 60 °C (drives < 3 x 100 A) or 75 °C
(drives 3 x 100 A), if comply with UL 508C.
For further details (e.g. maximum allowable length), see ZCabling– as from page 257.
7.5 Protection of the device and the cable
Cable protection fuses and device protection fuses must be installed to protect this device
and the cables against overload and possible damage/destruction through the electrical
mains. For data on the required fuses, see ZFuses– as from page 277.
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