Installation
24 Basic Supply Unit BUG 622, 623
5.94034.07a Baumüller Nürnberg GmbH
5.2 Applicable standards
The power units of the series BUG 62x are built-in devices according to EN 50178 / VDE 0160 / 4.98,
Section 5.2.6 and DIN VDE 0558 Part 1/07.87, Section 5.4.3.2.1. If the units are to be installed in closed
electrical premises that meet the safety demands of EN 50178/VDE 0160/4.98, Section 5.2.4 (IP 2X,
resp. even IP4X according to EN 60529/ 5.1).
Sheets of plastic covering the power connections, additionally prevent accidental contact during com-
missioning and casual use of control elements located close to the equipment (DIN VDE 0106 part 100,
Accident Prevention Regulation VBG4 "Electrical Systems and Equipment).
If the units are to be installed in closed electrical premises according to EN 50178/VDE 0160/4.98,
Section 5.2.7 and DIN VDE 0558 Part 1/07.87, Section 5.4.3.2.2, the user must ensure by additional
measures that the requirements according to EN 50178/VDE 0160/4.98, Section 5.2.4 are met.
The power unit is provided for the fixed mains connection to TN and TT mains according to DIN VDE
0100, Part 410/11.83 with a linked mains voltage of up to 3 x 500 V
eff
("and not more than 5000 rms
symmetrical amperes", if UL508C has to be observed (Nov 27, 1996, Tab. 44.1)).
The power unit can be connected to IT mains under certain circumstances. Baumüller will provide the
appropriate information on request.
During operation, the principles on which the converter and motor work, lead to leakage currents to earth
which are dissipated via specified protective earth connections and which may result in a current-
operated e.l.c.b. on the input side blowing prematurely. A DC component in the fault current may occur
in the event of a short-circuit to frame or earth fault which makes a triggering of the higher-level current-
operated e.l.c.b. more difficult or even impossible. The connection of the converter to the mains using
only the current-operated e.l.c.b. is prohibited (standard EN 50178 / VDE 0160 /4.98, sections 5.2.11
and 5.3.2.1).
Concerning climatic conditions, the units of the climatic category 3K3 for sheltered locations acc. to EN
50178/VDE 0160/4.98, Section 6.1, Table 7, Line 3 or acc. to Table 1 of EN 60721-3-1,2,3,4 under
consideration of Note 1 and 3 of EN 50178/ VDE 0160/4.98, Section 6.1. The actual operating
temperature range is between 0 to +55 °C. For storage and transport, the specifications of Table 7 (lines
5 and 6) of EN 50178/VDE 0160/4.98, Section 6.1 apply.
Unlike these specifications, the storage and transport temperature of the units may adopt values
between -30 and +70 °C (see technical data).
The type of protection of the units is IP 20 acc. to EN 60529 (DIN VDE 0470-1).
The power units are equipment of protection class I according to IEC 536/3 and DIN VDE 0106 Part 1
(EN 50178/VDE 0160/4.98, Section 5.2.9).
Equipment of protection class I is equipment, in which the protection against shock currents does not
only consist of the basic insulation and which includes an additional safety measure. This additional pro
-
tection is ensured by the connection and other parts to the PE so that no voltage is applied if the basic
insulation should fail. The entire insulation of these inverters acc. to EN 50178 / VDE 0160/4.98, Section
5.2.9.1 complies at least to a basic insulation. This also applies to the insulation between the individual
circuits.
The control connections of the power units are safely separated from the mains and are designed for the
connection of PELV/SELV circuits.
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