Installation
Basic Supply Unit BUG 622, 623 25
Baumüller Nürnberg GmbH 5.94034.07a
The following criteria were considered for the dimensioning of the air and creepage distances:
y Pollution degree 2 acc. to EN 50178/VDE0160/4.98, Section 5.2.15.2, Table 2, line 3
Normally, only non-conductive pollution occurs. If the units are not in operation, a casual, short-term
conductivity caused by condensation is possible.
y Overvoltage category III acc. to IEC 664-1, Table 1 for air distances of mains circuits to their
environments acc. to EN 50178/VDE0160/4.98, Section 5.2.16.1.
y Voltage range of the mains circuit for TN and TT mains acc. to HD 384.4.4152/DIN VDE 0100/
410:1996 with a phase-to-earth voltage of 500 V.
Insulating material IIIa for creepage distances acc. to EN 50178/VDE0160,/4.98, Section 5.2.17.
The power units of the series BUG 62x are not short circuit proof according to EN 50178/
VDE 0160/4.98, section 6.3.4.
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