Preparation; On-Site Requirements - Siemens SINAMICS DCM Betriebsanleitung

3.3.2

Preparation

3.3.2.1

On-site requirements

The basic version of the SINAMICS DC MASTER Cabinet drive system cabinets (IP20 in
accordance with EN 60529) are designed to be installed in closed electrical equipment
rooms (in accordance with EN 61800-5-1). A closed electrical equipment room is a room or
area containing electrical equipment that can only be accessed by trained or instructed
personnel. Access is controlled by a door or other form of barrier 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 equipment rooms must be dry and free of dust to prevent dirt collecting which, in
conjunction with humidity, could create an electrically conductive connection between
current-conducting parts. The air supplied must not contain any electrically conductive gas,
vapors, or dust, which could impair operation. It may be necessary to filter the air supplied to
the room where the equipment is installed.
Electrical equipment rooms in electrical installations frequently have a central energy and
fresh air supply that meet these requirements. If this is not the case, a drive cabinet with
applicable options (M21, M23, M43, M54 and M58) at a higher degree of protection is
available. See also "Degrees of protection of drive cabinets (Page 29)" and description of
options.
The permissible values for climatic environmental conditions must be taken into account.
At temperatures >40 °C for devices ≤210 A and >35 °C for devices >210 A and site altitudes
>1000 m, the devices must be derated. See also Chapter Derating (Page 139).
The cooling air for the power unit is drawn in from the front through the ventilation grills in the
lower part of the cabinet doors. The hot air is discharged through the perforated top panel or
the ventilation grilles in the top cover (with option M23/M43/M54). Cooling air can also be
supplied from below through raised/intermediate floors, air ducts etc. (with option M59). To
allow this, openings must be made in the 3-section bottom panel or individual bottom panels
must be removed.
It must be ensured that the cooling air quantity specified in the technical data is available
dust-free.
SINAMICS DCM Cabinet
Operating Instructions, 04/2015, A5E36161239/RS-AA/001
Mechanical installation
3.3 Mounting
39