GB/T 38774-2020Adjustable permanent magnetic drives - General technical specifications (English PDF)
永磁调速器 通用技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 28, 2020
Implementation date
November 1, 2020
Scope
GB/T 38774-2020 is the English-translated version of 永磁调速器 通用技术规范.
GB/T 38774-2020 is the Chinese standard "Adjustable permanent magnetic drives - General technical specifications". Its scope clause reads: This standard specifies the terms and definitions, type classification and identification, model and mark, basic parameters, technical requirements, and tests of permanent magnet governors.
Methods, inspection rules, signs, packaging and storage.
This standard applies to the working environment temperature is -45 °C ~ 65 °C, the speed regulation range is 30% ~ 99%, and the transfer nominal torque is 40N · m ~ 30000N · m, and permanent magnet governor with functions of isolating system vibration, buffer starting, overload protection, speed regulation and so on.
Its clauses include terms and definitions; type classification and identification.
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Document preview — GB/T 38774-2020
National Standard of the People's Republic of China
- ICS
- 21.120.20
- Classification
- J 19
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword I
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Type classification and identification
- 5 Model and marking
- 6 Basic parameters
- 7 Technical requirements
- 8 Test method
- 9 Inspection Rules
- 10 Marking, packaging and storage
- Appendix A (informative appendix) Comparison table of metric model and inch model
- Appendix B (Informative Appendix) Selection Guide
1 Scope
This standard specifies the terms and definitions, type classification and identification, model and mark, basic parameters, technical requirements, and tests of permanent magnet governors.
Methods, inspection rules, signs, packaging and storage.
This standard applies to the working environment temperature is -45 °C ~ 65 °C, the speed regulation range is 30% ~ 99%, and the transfer nominal torque is 40N · m ~
30000N · m, and permanent magnet governor with functions of isolating system vibration, buffer starting, overload protection, speed regulation and so on.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 3852 Coupling shaft hole and coupling type and size
GB/T 3931 Coupling Terminology
GB/T 4942.1 Degree of protection (IP code) classification of the overall structure of a rotating electrical machine
GB/T 9239.1 Mechanical vibration constant state (rigid) rotor balance quality requirements Part 1.Inspection of specification and balance tolerance
GB/T 12458 coupling classification
GB/T 13384 General technical requirements for packaging of electromechanical products
GB/T 38763 General technical specifications of permanent magnet coupling
3 Terms and definitions
The terms and definitions defined in GB/T 3931 and GB/T 38763 and the following apply to this document.
3.1 Adjustable permanent magnetic drives
Connected between the active end and the driven end, through the interaction of the permanent magnetic field and the induced magnetic field to achieve flexible transmission of torque and motion, and at the same time
A mechanical device that changes the speed of the driven end by adjusting the air gap.
4 Type classification and identification
4.1 Type classification
See Table 1 for the classification of permanent magnet governors.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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