JB/T 6477-1992 Method for drawing drawings of low voltage complete switchgear products and their components JB/T6477-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Methods for drawing drawings of low-voltage complete switchgear products and their components
1 Subject content and scope of application
JB/T6477--1992
This standard specifies the drawing methods of "low-voltage complete switchgear" (hereinafter referred to as assembly) series products and their component drawings (hereinafter referred to as drawings), including assembly drawings, structure drawings, and component drawings. 2 Reference standards
GB1238
Mechanical drawingSurface roughness code and its annotationWelding seam symbol representation
Metal coating and chemical treatment representation method
GB44574459Mechanical drawing
JB/Z157
3 Basic requirements
Product drawings and design file formats
3.1The size and format, scale, font, line and surface symbol of the loading drawing shall comply with the provisions of GB4457.1~4457.5. 3.2When the simplified surface method is used for the device drawing, it shall be drawn in an appropriate scale and the lines shall be kept clear and symmetrical. 3.3The drawing method of the device drawing shall comply with the provisions of GB4458.1. 3.4 The serial numbers and arrangement of parts in the assembly drawings of the device drawings shall comply with the provisions of GB4458.2. However, if the serial numbers of the added parts appear after the prototype is identified, they may not be restricted by the sequential position, but a "change" mark must be made. 3.5 The axonometric drawings and dimension annotations of the device drawings shall comply with the provisions of GB4458.3~4458.4. 3.6 The dimension tolerances and fit annotations of the device drawings shall comply with the provisions of GB4458.5. 3.7 The drawing of threads, fasteners, gears, splines, springs and the center hole indication in the device drawings shall comply with the provisions of GB4459.1~4459.5.
3.8 The code and annotation method of the surface roughness of the device drawings shall comply with the provisions of GB131. 3.9 The format of the detail column of the device drawings shall comply with the provisions of JB/Z157. 4 Other requirements
4.1 The fasteners of the device drawing can be drawn on the assembly drawing using centerline symbols and marked with serial numbers, and the quantity and specifications are noted in the details column. Sometimes, the combined components can be used, and the combined components of the fasteners are marked on the device drawing. 4.2 The loading drawing should not have an expanded view.
4.3 The openings on the device drawing can be represented in the form of a schematic diagram or a code. 4.4 Each product plan should have a general assembly drawing. 4.5 All welds on the device drawing should be marked with weld codes, and the weld codes should be in accordance with the provisions of GB324. 4.6 For all parts on the device drawing that require chemical treatment, the marking method should be in accordance with the provisions of GB1238. 4.7 The material marking method on the device drawing can use a simplified marking method. Approved by the Ministry of Machinery and Electronics Industry on August 6, 1992, implemented on January 1, 1993
JB/T6477-1992
4.8 The unit of measurement symbols on the device drawings shall comply with the provisions of the national legal units of measurement. 5 Simplified drawing method
5.1 The outline of the components (components, assemblies) in the device drawings can be simplified, but the joints with other parts should be clearly expressed and the positions should be correct.
5.2 Simplified drawing method of assembly drawings
5.2.1 The simplified drawing method of assembly drawings is shown in Figure 1. The standard model components installed can be represented by circular, square, rectangular and other simple geometric shapes according to the appearance characteristics of the components. Example: A square ammeter can be represented by
A rectangular contactor can be represented by
A round resistor can be represented by
A switch operating handle can be represented by
Graphic representation;
Graphic representation;
Graphic representation.
When the meaning of the above graphics needs to be further clarified, electrical diagram graphic symbols can be added to the graphics or project codes can be added to appropriate positions inside and outside the graphics.
Example: A square ammeter can be represented by
A rectangular contactor can be represented by
A round resistor can be represented by
A switch operating handle can be represented by
Graphic representation:
Graphic representation.
Graphical representation;
Graphical representation;
Example: A rectangular contactor can be represented by
JI3/T6477—1992
Graphical representation
The gaps and gaps between structural parts can be simplified to a single line without causing misunderstanding. In the assembly drawing, structures that are not related to assembly can be omitted. After meters, buttons, signal lights, switches, etc. are drawn in the main view, they can be omitted in other views. Examples of simplified graphical representations of standard components in assembly drawings: See Table 1 for simplified representations of switch handles; See Table 2 for simplified representations of transfer switches; See Table 3 for simplified representations of circuit breakers; See Table 4 for simplified representations of knife switches; See Table 5 for simplified representations of transformers, voltage regulators, phase shifters, mutual inductors, and reactors; See Table 6 for simplified representations of relay contactors; See Table 7 for simplified representations of fuses; See Table 8 for simplified representations of signal lights and buttons; See Table 9 for simplified representations of connector busbars: See Table 10 for simplified representations of semiconductor devices; See Table 11 for simplified representations of various commonly used capacitors, resistors, and inductors; See Table 12 for simplified representations of various commonly used graphic indicating instruments and meters. OPs
HiH2H3
JB/T64771992
JB/T6477—1992
National Middle School
Switch handle 1
Switch handle 2
Switch handle 3
Switch handle 4
JB/T64771992
Continued Table 1
Switch handle 5
Switch handle 6
Switch handle 7
Switch handle 8
Note handle shaft
Can be made
JB/T6477--1992| |tt||Continued Table 1
Graphic symbols
Switch handle 9
And closing handle 10
Transfer switch 1
Note, handle axis
JB/T6477-1992
Continued Table 2
China-China
Kemianwei
Transfer switch 2
Transfer switch with complex switch on/off symbols
General symbols of circuit breakers
(A, B, C are the width
height and depth dimensions of the circuit breaker)
IB/T6477--1992
Continued Table 3|| tt||Handle operated frame circuit breaker
Button operated frame circuit breaker
Electromagnet and measuring handle operated frame circuit breaker Motor and measuring handle operated frame circuit breaker%Serial number
FB/T64771992
Continued table 3
Circuit breakers with graphic symbols
Electromagnet with side handle and lever
Operated frame circuit breaker
Electromagnet with side handle right lever frontWww.bzxZ.net
Operated cabinet circuit breaker
Electromagnet with side handle left lever
Front operated frame circuit breaker| |tt||JB/T6477-1992
Continued Table 3
(A/4~A/S)
Front-operated circuit breaker with central handle
Front-operated withdrawable circuit breaker with central handle Electromagnetic circuit breaker with central handle Front-operated horizontal wiring frame circuit breaker
A, B, C circuit breaker dimensions
A, 6 circuit breaker installation dimensions
Wang, Sui circuit breaker inlet and outlet dimensions
E, F central handle dimensions
Electromagnetic circuit breaker
Motor
Electromagnetic circuit breaker with central handle Front-operated horizontal wiring withdrawable circuit breaker
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