IEC 60297-3-106:2010

Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 3-106: Adaptation dimensions for subracks and chassis applicable with metric cabinets or racks in accordance with IEC 60917-2-1

IEC 60297-3-106:2010 Specifies dimensions for mounting flanges of 19 in subracks or chassis that are to be mounted into metric cabinets or racks. Additional dimensions for subracks or chassis are according to the IEC 60297 series, and for metric cabinets or racks to the IEC 60917 series. EMC, seismic, climatic and environmental requirements and tests, are defined in the IEC 61587 series.

Structures mécaniques pour équipements électroniques - Dimensions des structures mécaniques de la série 482,6 mm (19 pouces) - Partie 3-106: Dimensions d'adaptation des bacs et des châssis, applicables aux baies ou aux bâtis dimensionnés selon le système métrique, conformément à la CEI 60917-2-1

La CEI 60297-3-106:2010 spécifie les dimensions des brides de montage des bacs ou des châssis de 19 pouces, qui sont destinés à être montés dans des baies ou des bâtis dimensionnés selon le système métrique. Les dimensions supplémentaires des bacs ou des châssis sont conformes à la série CEI 60297 et, pour les baies ou les bâtis dimensionnés selon le système métrique, à la série CEI 60917. Les exigences et les essais de CEM, sismiques, climatiques et environnementaux, sont définis dans la série CEI 61587.

General Information

• Status: Published
• Publication Date: 15-Mar-2010
• ICS: 31.240 - Mechanical structures for electronic equipment
• Technical Committee: SC 48D - Mechanical structures for electrical and electronic equipment
• Drafting Committee: WG 4 - TC 48/SC 48D/WG 4
• Current Stage: PPUB - Publication issued
• Start Date: 16-Mar-2010
• Completion Date: 15-Apr-2010

Standards Content (Sample)

IEC 60297-3-106 ®
Edition 1.0 2010-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Mechanical structures for electronic equipment – Dimensions of mechanical
structures of the 482, 6 mm (19 in) series –
Part 3-106: Adaptation dimensions for subracks and chassis applicable to metric
cabinets or racks in accordance with IEC 60917-2-1

Structures mécaniques pour équipements électroniques – Dimensions des
structures mécaniques de la série 482,6 mm (19 pouces) –
Partie 3-106: Dimensions d’adaptation des bacs et des châssis, applicables aux
baies ou aux bâtis dimensionnés selon le système métrique, conformément à la
CEI 60917-2-1
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IEC 60297-3-106 ®
Edition 1.0 2010-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Mechanical structures for electronic equipment – Dimensions of mechanical
structures of the 482, 6 mm (19 in) series –
Part 3-106: Adaptation dimensions for subracks and chassis applicable to metric
cabinets or racks in accordance with IEC 60917-2-1

Structures mécaniques pour équipements électroniques – Dimensions des
structures mécaniques de la série 482,6 mm (19 pouces) –
Partie 3-106: Dimensions d’adaptation des bacs et des châssis, applicables aux
baies ou aux bâtis dimensionnés selon le système métrique, conformément à la
CEI 60917-2-1
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 31.240 ISBN 978-2-88910-097-2
– 2 – 60297-3-106 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope and object.6
2 Normative references .6
3 Arrangement overview (Figure 1) and definitions .6
4 Dimensions for flanges of 19 in subracks or chassis applicable for mounting on
metric cabinets or racks.7
4.1 General .7
4.2 Dimensions for mounting holes arrangements on the flanges, mounting-
layout referred to the pitch lines of the 19 in subracks, or chassis .7
4.3 Dimensions for mounting holes arrangements on the flanges, mounting
layout referred to the unit centre lines of the 19 in subracks or chassis .10
4.4 Dimensions for flanges of 19 in subracks applicable for metric cabinets or
racks with 515 mm mounting hole dimension.13
Bibliography.15

Figure 1 – Arrangement overview – Adaptation of subracks of the IEC 60297-3-101
series into cabinets of the IEC 60917-2-1 series .7
Figure 2 – Mounting hole arrangements on the flanges, mounting layout referred to
the bottom pitch lines of the 19 in subracks or chassis.8
Figure 3 – Dimensions of mounting hole positions of the flanges, mounting layout
referred to the bottom pitch lines of the 19 in subracks or chassis .9
Figure 4 – Mounting hole arrangements on the flanges, mounting layout referred to
the unit centre lines of the 19 in subracks or chassis .11
Figure 5 – Dimensions of mounting holes positions of the flanges, mounting layout
referred to the unit centre lines of the 19 in subracks or chassis .12
Figure 6 – Dimensions for flanges of 19 in subracks that are applicable for metric
cabinets with 515 mm mounting hole dimension.14

Table 1 – Dimensions of mounting holes positions of the flange, mounting layout
referred to the bottom pitch lines of the 19 in subracks or chassis .10
Table 2 – Dimensions of mounting holes positions of the flange, mounting layout
referred to the unit centre lines of the 19 in subracks or chassis .13

60297-3-106 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT –
DIMENSIONS OF MECHANICAL STRUCTURES
OF THE 482, 6 mm (19 in) SERIES –

Part 3-106: Adaptation dimensions for subracks and chassis applicable
to metric cabinets or racks in accordance with IEC 60917-2-1

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60297-3-106 has been prepared by subcommittee 48D:
Mechanical structures for electronic equipment, of IEC technical committee 48:
Electromechanical components and mechanical structures for electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
48D/419/FDIS 48D/423/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – 60297-3-106 © IEC:2010
A list of all parts of IEC 60297 series, under the general title Mechanical structures for
electronic equipment – Dimensions of mechanical structures of the 482, 6 mm (19 in) series,
can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
60297-3-106 © IEC:2010 – 5 –
INTRODUCTION
The IEC 60297 series of standards provides definitions on mechanical structure and
dimensions for 19 in cabinets and racks and their compatible subracks and chassis. The
combination of 19 in based cabinets or racks and subracks and chassis are broadly applied
for all industrial electronic fields in the world.
The IEC 60917 series of standards are based on metric modular ordered dimensions, and
also define structures and interface dimensions for metric cabinets, racks, subracks and
chassis. The IEC 60917 series, developed later compared to IEC 60297, provides for more
logical subrack and chassis design practices based on metric dimensioning.
Requests for combined applications of both mechanical structures, the IEC 60297 series (19
in standard) and the IEC 60917 series (metric standard), resulted in requirements to mount 19
in subracks or chassis into metric standard cabinets or racks and, vice versa, metric subracks
or chassis into 19 in cabinets or racks.
To cope with the requirements and needs, it is required to develop definitions for appropriate
interface dimensions of flange mounting positions for cabinets or racks mounting of 19 in or
metric subracks or chassis. And the definitions bring economical solutions for installations of
electronic equipment into existing cabinets or racks. Further, they provide guidance to electro-
mechanical designers to develop systems suitable to be mounted into both IEC standard
series flexibly.
To meet such market needs, this standard defines dimensions for 19 in subracks or chassis
applicable for metric cabinets or racks. (Dimensions for the applications, where metric
subracks or chassis to be mounted into 19 in cabinets or racks, are defined in a separate
standard , i.e. IEC 60917-2-4.)

– 6 – 60297-3-106 © IEC:2010
MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT –
DIMENSIONS OF MECHANICAL STRUCTURES
OF THE 482, 6 mm (19 in) SERIES –

Part 3-106: Adaptation dimensions for subracks and chassis applicable
to metric cabinets or racks in accordance with IEC 60917-2-1

1 Scope and object
This part of IEC 60297 specifies dimensions for mounting flanges of 19 in subracks or chassis
that are to be mounted into metric cabinets or racks.
Additional dimensions for subracks or chassis are according to the IEC 60297 series, and for
metric cabinets or racks to the IEC 60917 series.
EMC, seismic, climatic and environmental requirements and tests, are defined in the
IEC 61587 series.
The drawings used in this standard are not intended to indicate product design, only the
specific dimensions that should be used.
The terminology used complies with IEC 60917-1.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60297 (all parts): Mechanical structures for electronic equipment – Dimensions of
mechanical structures of the 482,6 mm (19in) series
IEC 60297-3-101, Mechanical structures for electronic equipment – Dimensions of mechanical
structures of the 482,6 mm (19 in) series – Part 3-101: Subracks and associated plug-in units
IEC 60917 (all parts): Modular order for the development of mechanical structures for
electronic equipment practice
IEC 60917-2-1, Modular order for the development of mechanical structures for electronic
equipment practices – Part 2: Sectional specification – Interface co-ordination dimensions for
the 25 mm equipment practice – Section 1: Detail specification – Dimensions for cabinets and
racks
IEC 60917-2-4, Modular order for the development of mechanical structures for electronic
equipment practices – Part 2-4: Sectional specification – Interface co-ordination dimensions
for the 25 mm equipment practice – Adaptation dimensions for subracks or chassis applicable
in cabinets or racks in accordance with IEC 60297-3-100 (19 in)
3 Arrangement overview (Figure 1) and definitions
This standard defines dimensions for flanges of 19 in subracks or chassis that are applicable
for mounting on metric cabinets or racks. Dimensions for applications where metric subracks

60297-3-106 © IEC:2010 – 7 –
or chassis are to be mounted into 19 in cabinets or racks are defined in a separate standard
(IEC 60917-2-4).
All other dimensions are in compliance with IEC 60297 series (19 in standard) and IEC 60917
series (metric standard).
465/515
Cabinet in accrodance with
IEC 60917-2-1 (metric)
Subrack in accrodance with
IEC 60297-3-101 (19 in)
< 449
Support rail
85 × 5,08
465/515
Adaptor flange with metric hole-spacing as
First pitch line
an interface between the 19 in subracks or
chassis and the metric cabinets or racks

IEC  463/10
Dimensions in mm
Figure 1 – Arrangement overview –
Adaptation of subracks of the IEC 60297-3-101 series
into cabinets of the IEC 60917-2-1 series
4 Dimensions for flanges of 19 in subracks or chassis applicable for mounting
on metric cabinets or racks
4.1 General
Dimensions for mounting holes arrangements on the flanges are arranged by the two
mounting layouts in the cabinets:
a) mounting layout referred to the pitch lines of the 19 in subracks or chassis, and
b) mounting layout referred to the centre lines of the 19 in subracks or chassis.
4.2 Dimensions for mounting holes arrangements on the flanges, mounting-layout
referred to the pitch lines of the 19 in subracks, or chassis
Figure 2 shows the mounting holes arrangements on the flanges.
n × 44,45
Pitch line
n × 25
Pitch line in accordance
with IEC 60917-2-1
– 8 – 60297-3-106 © IEC:2010
Figure 3 and Table 1 show detailed dimensions of mounting holes positions of the flanges.
This mounting layout may be recommended for existing subracks or chassis with their support
rails utilized.
Bottom pitch line
Optional mounting layout by using of the existing bottom-side hole to make mounting
of 1U subracks or chassis stable, but not to be aligned on the bottom pitch line
IEC  464/10
Dimensions in mm
Figure 2 – Mounting hole arrangements on the flanges, mounting layout referred
to the bottom pitch lines of the 19 in subracks or chassis

60297-3-106 © IEC:2010 – 9 –
Flange height: n × 44,45
IEC  465/10
Dimensions in mm
Figure 3 – Dimensions of mounting hole positions of the flanges, mounting layout
referred to the bottom pitch lines of the 19 in subracks or chassis

– 10 – 60297-3-106 © IEC:2010
Table 1 – Dimensions of mounting holes positions of the flange, mounting layout
referred to the bottom pitch lines of the 19 in subracks or chassis
Dimensions in mm
Height units E E E E
b1 b2 b3 b4
n × U ± 0,4 ± 0,4 ± 0,4 ± 0,4
a
1U
37,7 – – –
(44,45)
b
1U
5,95 – – –
(44,45)
2U
37 25 – –
(88,90)
3U
12 100 – –
(133,35)
4U
12 150 – –
(177,80)
5U
12 100 100 –
(222,25)
6U
12 100 100 –
(266,70)
7U
12 75 125 75
(311,15)
8U
12 100 125 100
(355,60)
9U
12 150 75 150
(400,05)
10U
12 150 125 150
(444,50)
11U
12 175 100 175
(488,95)
12U
12 175 150 175
(533,40)
a
Use of the existing mounting hole of the 19 in 1U subrack or chassis.
b
Optional mounting layout by using of the existing bottom-side hole to make mounting of 1U subracks or
chassis stable, but not to be aligned on the bottom pitch line.

4.3 Dimensions for mounting holes arrangements on the flanges, mounting layout
referred to the unit centre lines of the 19 in subracks or chassis
Figure 4 shows the mounting holes arrangements on the flanges.
Figure 5 and Table 2 show detailed dimensions of mounting holes positions of the flanges.

60297-3-106 © IEC:2010 – 11 –
Unit centre line
IEC  466/10
Dimensions in mm
Figure 4 – Mounting hole arrangements on the flanges, mounting layout referred
to the unit centre lines of the 19 in subracks or chassis

– 12 – 60297-3-106 © IEC:2010
Flange height: n × 44,45
Unit centre line
Unit centre line
Unit centre line
Unit centre line
IEC  467/10
Dimensions in mm
Figure 5 – Dimensions of mounting holes positions of the flanges, mounting layout
referred to the unit centre lines of the 19 in subracks or chassis

60297-3-106 © IEC:2010 – 13 –
Table 2 – Dimensions of mounting holes positions of the flange, mounting layout
referred to the unit centre lines of the 19 in subracks or chassis
Dimensions in mm
Height units E E E
c1 c2 c1
n × U ± 0,4 ± 0,4 ± 0,4
1U
21,8 – –
(44,45)
2U
– 50 –
(88,90)
3U
– 100 –
(133,35)
4U
– 150 –
(177,80)
5U
– 200 100
(222,25)
6U
– 250 125
(266,70)
7U
– 200 100
(311,15)
8U
– 300 100
(355,60)
9U
– 350 100
(400,05)
10U
– 400 150
(444,50)
11U
– 450 125
(488,95)
12U
– 500 175
(533,40)
4.4 Dimensions for flanges of 19 in subracks applicable for metric cabinets or racks
with 515 mm mounting hole dimension
19 in subracks or chassis can be mounted into metric cabinets or racks which have a
mounting hole dimension (W ) of 515 mm by using an extension flange(s).
S3
Figure 6 shows typical dimensions for the flanges of 19 in subracks that are applicable for the
metric cabinets with 515 mm mounting hole distance, based on mounting layout referred to
the unit centre lines of the 19 in subracks or chassis
NOTE Concerning the flange for the 515 mm mounting hole distance, detail dimensions for mounting holes
arrangements on the flanges, except for the 515 mm mounting hole distance, are according to 4.2 and 4.3.

– 14 – 60297-3-106 © IEC:2010
Unit centre line
IEC  468/10
Dimensions in mm
Figure 6 – Dimensions for flanges of 19 in subracks that are applicable
for metric cabinets with 515 mm mounting hole dimension

60297-3-106 © IEC:2010 – 15 –
Bibliography
IEC 60297-3-100, Mechanical structures for electronic equipment – Dimensions of mechanical
structures of the 482,6 mm (19in) series – Part 3-100: Basic dimensions
...