IEC 61587-1:2011 specifies environmental requirements, test set-up, as well as safety aspects for empty enclosures, i.e. cabinets, racks, subracks and chassis under indoor conditions. The purpose of this standard is to establish defined levels of physical performance in order to meet certain requirements of storage, transport and final location conditions. It applies in whole or part only to the mechanical structures of cabinets, racks, subracks and chassis, but it does not apply to electronic equipment. This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - Rephrasing 'performance level' by 'classification'; - Reference to fire hazard testing according to IEC 60695-11-10 in 8.2.1; - Intended applications replaced by application examples; - Static load test, distributed dummy load locations for ETSI and 19' removed; - Table 'Static load distribution within the cabinet' IEC 60297-2 changed to IEC 60297-3-100; - IEC 60917 subrack 625 mm wide has been removed, as it is not a common width; - Parts of the document relevant to outdoors have been removed (reference to 61969 series).