GB/T 997-2003
Classification of types of construction and mounting arrangements for rotating electrical machines(IM code)

Be replaced

Standard No.

GB/T 997-2003

Language

Chinese

Release Date

2003

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 997-2008

Lastest

GB/T 997-2022

Scope

This standard specifies the IM codes for the structure and installation types of rotating electrical machines. The two codes are specified as follows: Code 1 (see Chapter 2): The alphanumeric code applies to motors with end cap bearings and a shaft extension. Code 2 (see Chapter 3): The all-digit code is applicable to a wider range of motor types, including the motor types involved in Code 1. Motor types not listed in code 2 shall be fully described in words. See Appendix A for the relationship between Code 1 and Code 2.

GB/T 997-2003 history

• 2022 GB/T 997-2022 Classification of types of construction，mounting arrangements and terminal box position (IM Code) for rotating electrical machines
• 2008 GB/T 997-2008 Rotating electrical machines.Classification of types of construction,mounting arrangements and terminal box position for(IM Code)
• 2003 GB/T 997-2003 Classification of types of construction and mounting arrangements for rotating electrical machines(IM code)
• 1981 GB/T 997-1981 Motor structure and installation type code
• 0000年 GB 997-1967