JB/T 7123-1993YCT series electromagnetic adjustable speed motors - Technical specifications (frame sizes 112 to 355) (English PDF)
YCT 系列电磁调速电动机 技术条件(机座号112～355)
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
October 8, 1993
Implementation date
January 1, 1994
Scope
JB/T 7123-1993 is the English-translated version of YCT 系列电磁调速电动机 技术条件(机座号112～355).
JB/T 7123-1993 is the Chinese machinery industry standard covering YCT series electromagnetic adjustable speed motors - Technical specifications (frame sizes 112 to 355).
It was issued on 8 October 1993 and has been in force since 1 January 1994, replacing JB/DQ 3167-1986. The document is under the responsibility of the Ministry of Industry and Information Technology.
This page is published from the official record of the 1993 edition. The figures, limits and tables the standard contains are those of the document itself, delivered in full with the English translation.
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Document preview — JB/T 7123-1993
National Standard of the People's Republic of China
- Replacing
- JB/DQ 3167-1986
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- [Preview only]
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 3.1 Type
- 3.2 Basic parameters
- 4 Types and basic parameters
- 4.1 Types
- 4.2 Model designation
- 4.3 Nominal operating conditions
- 4.4 Safety and hygiene
- 4.5 Welding
- 4.6 Bridge (After crane operation mechanism assembled)
- 4.7 Assembly
- 4.8 Electrical control equipment
- 4.9 Steel pretreatment and painting
- 5 Technical requirements
- 5.1 General requirements
- 5.2 Safety requirements
- 5.3 Cold and hot working forming
- 5.4 Rated load test
- 5.5 Whole machine noise test
- 5.6 Static rigidity test
- 5.7 Dynamic load test
- 5.8 Crane span deviation
- 5.9 Diagonal difference of bridge
- 6 Test methods
- 6.1 Exit-factory inspection
- 6.2 Type inspection
- 7 Inspection rules
- 7.1 Marking
- 7.2 Packaging, transportation and storage
- 7.3 Transportation
- 7.4 Storage
- 8 Marking, packaging, transportation and storage
- 9 标志和标签 9 Marking and labeling
1 Foreword
JB/T 7123-1993 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 8 October 1993.
The JB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
The document runs to 15 pages in English translation.
2 Scope Preview
JB/T 7123-1993 carries no ICS number and no Chinese Standard Classification code.
This catalogue holds 21,922 other JB/T standards.
Of the 5,298 JB/T standards that do carry an ICS number, 1,460 (28%) fall under ICS 25, in the field of manufacturing engineering.
3 About this standard
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
English translation: about 15 pages
4 Related standards
Other editions:
JB/T 7123-2010 (later edition)
Standards on related subjects:
GB/T 1032-2023 — Test methods for three-phase asynchronous motors
GB/T 13957-2022 — Technical requirements for the fundamental series of three-phase large asynchronous motor
JB/T 1012-2017 — Specification for YY series capacitor-run induction motors
JB/T 7118-2025 — YVF Series (IP55) Variable Frequency Speed Control Three-Phase Asynchronous Motors Technical Specifications (Frame Sizes 63 to 355)
JB/T 7127-2022 — Specification for YD series (IP54) pole-changing multi-speed three-phase induction motors (frame size 63 to 315)
JB/T 7119-2022 — Specification for YR series (IP44) wound-rotor three-phase induction motors (frame size 132 to 355)
5 Classification and status
Chinese Standard Classification (CCS): K 22
Prefix JB/T: recommended standard.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of JB/T 7123
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 7123-1993 | YCT series electromagnetic adjustable speed motors - Technical specifications (frame sizes 112 to 355) | current edition | Current |
| JB/DQ 3167-1986 | YCT series electromagnetic adjustable speed motors - Technical specifications (frame sizes 112 to 355) | previous edition | Superseded |
This page sells the current edition, JB/T 7123-1993. Earlier editions are listed for reference only.
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