This part of this European Standard specifies requirements for fire resisting data cabinets and diskette inserts.
Two methods of test are specified to determine the ability of fire resisting data cabinets to protect temperature and humidity sensitive contents from the effects of fire: a fire endurance test and a fire shock and impact test. Two levels of fire severity (S 60 and S 120) based upon time of fire exposure; and three protection classes (P, D and DIS) are specified using the maximum temperature
increases and humidity values permitted within the storage space of the data cabinet.
Diskette inserts (DI 60 P/DIS and DI 120 P/DIS) are installed in data cabinets of protection class S 60 P or S 120 P, respectively, and subjected to a fire endurance test (see 5.1.2).
Requirements are also specified for test specimens, the technical documentation for the test specimen, correlation of the test specimen with the technical documentation, preparation for type testing and
test procedures.
A scheme to classify the fire resisting data cabinets and diskette inserts from the test results is also given (see Table 1).
Cabinets having the same design, protection and construction features (type and thickness of construction and protective materials, rebate geometry, locking, etc.) will only give the same fire protection classification as that of a test specimen if they are of similar internal dimensions. The maximum difference in internal dimensions (height,
width and depth of the storage space, measured from wall to wall) to which the test classification could apply is + 15 %. Cabinets having internal dimensions which differ by more than this amount from that of the tested specimen should be submitted to an extra test.
The wall, ceiling and door thicknesses should not be below the specified minimum limit of the type-tested thickness by more than 3 %.