Operating instructions

Installation
Feed/Feed-Back Units BUC 624, 625 23
Baumüller Nürnberg GmbH 5.96024.06a
Normally, only non-conducting pollutants are produced. When the equipment is out of service, brief con-
ductivity can occur due to condensation.
- Overvoltage category III according to IEC 664-1, Table 1 for the air clearances of mains circuits to their
environment according to provisional standard EN 50178/VDE 0160/11.94, Section 5.2.16.1.
- The rated insulation voltage of the mains circuits for TN and TT systems according to DIN VDE 0100
Part 410/11.83 with a diametric voltage of 3 x 500 V.
- Insulation material IIIa for creepage distances according to provisional standard EN 50178/VDE 0160/
11.94, Section 5.2.17.
Series BUC 62x power converters are short-circuit-proof in the sense of provisional standard EN 50178/
VDE 0160/11.94, Section 6.3.4, assuming that you use protective semiconductor fuses to protect the
transistors (see Accessories).