This part specifies the basic size series of plug-in boxes and plug-ins with a height system of 20 mm. This part is applicable to plug-in boxes and plug-ins with a height system of 20 mm for professional use in electrical transmission, power, communication and instrumentation. GB/T 3047.3-2003 Basic size series of plug-in boxes and plug-ins with a height system of 20 mm GB/T3047.3-2003 Standard download decompression password: www.bzxz.net

GB/T3047 is divided into seven parts:
GB/T3047.1 Basic dimension series of panels, racks and cabinets with a height of 20mm; GB/T3047.2 Basic dimension series of panels, racks and cabinets with a height of 44.45mm; Basic dimension series of plug-in boxes and plug-ins with a height of 20mm; GB/T 3047.3
GB/T 3047.4
Basic dimension series of plug-in boxes and plug-ins with a height of 44.45mm; GB/T3047.5
Basic dimension series of desktop cases with a height of 20mm; GB/T3047.6 Basic dimension series of desktop cases of electronic equipment; Basic dimension series of narrow cabinets with a height of 44.45mm. GB/T 3047.8
This part is the third part of GB/T3047.
GB/T3047.3—2003
This part replaces GB/T3047.3-1.989 "Basic size series of plug-in boxes and plug-ins with a height system of 20 mm". Compared with GB/T3047.3--1989, the main changes of this part are as follows: - Add a chapter on normative reference documents;
Add the outer width dimension of the plug-in box;
Add the dimensional tolerance of the plug-in box (3.8.1); Add the form and position tolerance of the plug-in box (3.8.2). This part is proposed by the China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Technical Committee for Comprehensive Standardization of Electrical and Electronic Equipment Structures. Drafting units of this part: Acheng Relay Co., Ltd., Beijing Electrical Technology and Economic Research Institute of Machinery Industry, Shanghai Industrial Automation Instrumentation Research Institute.
The main drafters of this part: He Xiaonan, Zhang Hui, Li Xiaojing, Xu Dingming, Song Zhenyu. I
1 Scope
Sub-boxes and plug-ins with a height system of 20 mm
Basic size series
This part specifies the basic size series of sub-boxes and plug-ins with a height system of 20 mm. GB/T3047.3—2003
This part is applicable to sub-boxes and plug-ins with a height system of 20 mm used in the fields of electrical transmission, power, communication and instrumentation. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of GB/T3047. For dated references, all subsequent amendments (excluding errata or revisions) are not applicable to this part. However, parties to agreements based on this part are encouraged to investigate whether the latest versions of these documents can be used. For undated references, the latest versions apply to this part. GB/T1800.3 Basis of limits and fits Part 3: Table of standard tolerances and basic deviations (GB/T1800.3-1998, eqv IS0 286-1: 1988)
GB/T1184 Tolerances of shape and position without tolerance values ​​(GB/T1184-1996, eqv ISO2768-2:1989) GB/T3047.1 Basic dimensions of panels, racks and cabinets with a height of 20 mm Series 3
Basic dimensions and tolerances of plug-in boxes
3.1 Basic dimensions of plug-in boxes See Figure 1.
Plug-in panel
Mμ = 20 mm;
H----Plug-in box height;
..Plug-in box width;bzxz.net
DPlug-in box depth;
·Plug-in guide rail
Main, n
Figure 1 Basic dimensions of plug-in box
Installation dimensions in the width direction of the plug-in box;
Width of the main body of the box;
Width of the plug-in box frame;
Coefficient, take a positive integer according to the design requirements. GB/T3047.3---2003
3.2 Plug-in guide rail Box width W size series
(120), 240, 360 (420) 480, 520, (540), 600, (720) mm. Note: The dimensions in brackets are not recommended. 3.3 Plug-in box height H size series
39, 59, 79, 99, 119, 139, 159, 179, 199, 239, 279, 319, 359, 399, 439, 479, 519 mm. H-n·M--1, tolerance is ±0.5 mm.
3.4 ​​Dimension series of the external depth D of the pluggable box
140, 200, 260, 320 mm.
When necessary, it is allowed to increase by integer multiples of 20 mm. 3.5 See Figure 1 and Table 1 for the relevant dimensions in the width direction of the pluggable box. Table 1 Relevant dimensions in the width direction of the pluggable box
Applicable to general support.
Applicable to the installation of telescopic rails and other forms of support 3.6 See Figure 2 and Table 2 for the relevant dimensions in the height direction of the pluggable box. W
Figure 2a)
Dimensions in the height direction of the pluggable box (I)
Not less than
Unit is mm
Figure 2b)
Dimensions in the height direction of the pluggable box (II)
Dimensions in the height direction of the pluggable box (III)
Figure 2)
Table 2 Relevant dimensions in the height direction of the pluggable box
GB/T 3047.3—2003
Unit: mm
GB/T3047.3—2003
12·Mg
16·MH
18·Mh
20·MH
24·Mh
26·Mh
Table 2 (Continued)
3.7 The dimensions of the mounting notches or mounting holes of the pluggable box shall comply with the relevant provisions of GB/T3047.1. 3.8 Plug-in box tolerance
3.8.1 The dimension tolerance of the plug-in box shall comply with IT9~~IT10 specified in GB/T1800.3. h2
3.8.2 The shape and position tolerance of the plug-in box (mainly parallelism and verticality) shall be in accordance with the tolerance grade 8~9 specified in GB/T1184. 4 Basic dimensions of plug-ins
The basic types of plug-ins are shown in Figures 3 to 5.
Spliced ​​plug-in
Unit: mm
Figure 4 Inlaid plug-in
Figure 5 Inserted plug-in
GB/T 304Z.3—2003
Note. In Figures 3 to 5, w. Width of plug-in; d-depth of plug-in body; .-Height of plug-in body. .-Height of panel of spliced ​​plug-in; .height of panel of inlaid plug-in; hs——-height of panel of inserted plug-in. 4.2 The dimension series of the width w occupied by the plug-in
15, 20, 25, 30, 40, 50, 60, 80, 100, 120, 160, 200mm.4.3 The dimension series of the depth d of the plug-in body
102.5, 162.5, 222.5, 282.5mm.
When necessary, it is allowed to increase by integer multiples of 60mm. 4.4 The dimension series of the height h of the plug-in body
60.80, 100, 120, 140, 160, 180, 200, 220, 240, 260, 280, 320, 360, 400, 480mm. 4.5 The dimensions of the height of the plug-in panel are shown in Figures 3 to 5 and Table 3. Table 3 The dimensions of the height of the plug-in panel
4.6 The recommended dimension series of the plug-in printed circuit board are shown in Figure 6 and Table 4. hs
H-5 or H-3
Unit is millimeter
GB/T3047.3—2003
Depth of printed board; Hb
Connector
Height of printed board.
Printed board
Figure 6 Plug-in printed board
Table 4 Recommended dimensions of plug-in printed board
Note 1: ○ indicates the recommended specifications of plug-in printed board. Note 2: If necessary, D is allowed to increase by integer multiples of 60mm. 160
Unit is millimeter
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.