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3.3.2
Preparation
3.3.2.1
Requirements for installation location
The enclosed drives are designed for installation in closed, electrical operating areas in
compliance with IEC 61800-5-1. A closed electrical operating area is a room or area
containing electrical equipment that can be accessed by trained personnel only. Access is
controlled by a door or other form of barricade that can be opened only by means of a key or
other tool. The room or area is also clearly marked with appropriate warning notices.
The operating areas must be dry and free of dust. The air supplied must not contain any
electrically conductive gas, vapors, or dust that could impair operation. It may be necessary
to filter the air supplied to the installation room. If the air contains dust, filter mats (option
M54) can be installed in front of the ventilation grills of the cabinet doors and also in front of
the optional top hats. Option M54 offers additional protection against water sprayed against
the enclosure from any direction and corresponds to enclosure type NEMA 12 ventilated
(IP54).
The permissible values for climatic ambient conditions must be taken into account.
At temperatures above 104 °F (40 °C) or altitudes above 6600 ft (2000 m), the devices must
be derated.
The basic versions of the enclosed drives have a NEMA 1 enclosure.
The enclosed drives are installed in accordance with the dimension drawings supplied. The
clearance between the top of the cabinet and the ceiling is also specified on the dimension
drawings.
The cooling air for the power module is drawn in from the front through the ventilation grills in
the lower part of the cabinet doors. The heated air is released through the ventilation grills in
the roof assembly. Cooling air can also be supplied from below through intermediate floors,
air ducts, etc. To allow this, openings must be made in the 3-section bottom panel or
individual bottom panels must be removed.
In accordance with IEC 61800-3, the enclosed drive is not intended for use in public low-
voltage networks that supply residential buildings. High-frequency interference may occur if
they are used in this type of power network.
3.3.2.2
Requirements on the levelness of the floor
The foundation at the installation location of the enclosed drives must be horizontal and level
to ensure proper functioning of the enclosed drives.
● Care must be taken to ensure that the doors can be opened and closed and that the
locking systems work properly.
● Flat sections (such as doors, side panels and top hats) must be sealed correctly to
ensure compliance with the specified degree of protection.
● When cabinets are connected (e.g., transport units), air inlets caused by gaps must be
prevented.
Converter cabinet units
Operating Instructions, 11/2017, A5E36652151A
Mechanical installation
3.3 Installation
43
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