SN EN 60917-2-2 : 1996

1 Scope
2 Normative references
3 Terminology
4 Equipment arrangement
5 Dimensions
    5.1 Subracks
          5.1.1 Type A subrack, connector application
                 with backplane
          5.1.2 Type B subrack, connector application
                 without backplane
          5.1.3 Type C subrack
          5.1.4 Chassis
    5.2 Backplane
    5.3 Internal co-ordination and backplane grid
    5.4 Front panels on cabinets or racks and dimensions
          for subracks and chassis mounting flanges
    5.5 Types of plug-in units
          5.5.1 P type plug-in units
          5.5.2 P type plug-in units with injector/
                 extractor handles
          5.5.3 K frame type plug-in units to
                 accommodate P type plug-in units
          5.5.4 L frame type plug-in units with front
                 panels to accommodate P type plug-in
                 units without front panels
          5.5.5 M box type plug-in units with male guides
          5.5.6 N box type plug-in units without male
                 guides
          5.5.7 Clearance of plug-in units in subrack
    5.6 Terms, definitions and tables of dimensions
          5.6.1 Nomenclature
          5.6.2 Height dimensions
          5.6.3 Width dimensions
          5.6.4 Depth dimensions
Figures
1 Examples of subracks, backplanes, plug-in units and
    cabinet or rack front panels
2 Dimensional relationship for subrack and plug-in
    units
3a Subrack dimensions for mounting plug-in units, plug-in
    unit guides and backplanes
3b Dimensions of subracks and fastening arrangement
3c Plug-in unit guides and plug-in unit positions
4 Optional subrack with front panels for electro-
    magnetic interference (EMI) shielding
5 Mounting dimensions for connectors without backplane
6 Type C subrack dimensions
7 Backplane dimensions
8 Relationship between reference planes and backplane
    grid
9 Mounting dimensions for rack or cabinet front panels,
    subracks and chassis
10 Mounting height dimensions for rack or cabinet front
    panels, chassis and subrack mounting flanges
11 Examples of types of plug-in units
12 P type plug-in unit dimensions
13 Front panels for plug-in units
14 Printed board dimensions
15 P type plug-in injector/extractor handle dimensions
16 K frame type plug-in units
17 L frame type plug-in units
18 M box type plug-in units
19 N box type plug-in units
20 Typical plug-in unit arrangements
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications

Defines dimensions ensuring mechanical interchangeability of subracks, chassis, plug-in units, backplanes and front panels.