GB/T 22671-2024 in English

VALID

Test methods for external-rotor motors

Issued on:2024-09-29
Implemented on:2025-04-01
File Format:PDF
Delivery:Within 1 day

Price(USD)： $216.00
$210.00

Standard No:	GB/T 22671-2024
Document status:	VALID
Title in English:	Test methods for external-rotor motors
Title in Chinese:	外转子电动机试验方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2024-09-29
Implemented on:	2025-04-01
Superseding:	GB/T 22671-2008 Test procedures for with external rotor motors
ICS Classification:	29.160.30-Motors
Chinese Classification:	K20-Electric rotating machinery in general
Professional Classification:	GB-National Standard
Related Keywords:	external rotor motors external rotor motors gb/t test methods asynchronous/synchronous external rotor motors locked-rotor test motor
Related Topics:	rotor english Motor housing multiple electron transfer

《GB/T 22671-2024外转子电动机试验方法》由TC26（全国旋转电机标准化技术委员会）归口，TC26SC1（全国旋转电机标准化技术委员会小功率电机分会）执行，主管部门为中国电器工业协会。

Introduction

Interpretation of the standardization of test methods for external rotor motors

GB/T 22671—2024 "Test methods for external rotor motors" is the latest standard for testing external rotor motors in my country, which aims to standardize the test process and requirements for external rotor motors. This article will provide a detailed interpretation of the standard content, technical requirements, implementation recommendations, etc.

Comparison table of standard frameworks

Chapter number	Chapter content	New/modified content	Scope of application
1	Scope	It is clarified that the standard applies to AC asynchronous/synchronous external rotor motors	All types of external rotor motors
5	Basic requirements for tests	Added specific requirements for test environment, power supply and measuring instruments	Pre-test preparation stage
8	Temperature rise test method	The specific steps and limit calculation method of the temperature rise test have been modified	Motor thermal performance test
10	Locked-rotor torque and locked-rotor current	Added specific operating specifications for locked-rotor test	Motor mechanical characteristics test

Professional terminology explanation and practical application cases

External rotor motor:An electric motor with the stator inside and the rotor outside. Commonly used in fans, pumps and other fields.

Temperature rise test:Determine the operating temperature and temperature rise limit of the motor winding through heating test to ensure long-term operation safety.

Efficiency determination:Calculate the motor efficiency by directly measuring the input power and output mechanical power. For example, in the GB/T 22671-2024 standard, the efficiency is determined by the direct method, and the test equipment is required to have sufficient accuracy.

Implementation suggestions

Pre-test preparation: Ensure that measuring instruments such as dynamometer, torque and speed measuring instrument meet the accuracy requirements and are calibrated.
Installation requirements: Install strictly in accordance with the axis coaxiality and runout requirements in the standard to avoid test errors caused by improper installation.
Temperature rise control: In the temperature rise test, take effective measures to prevent external airflow interference and record the temperature changes of the cooling medium in a timely manner.
Data processing: Use professional software to analyze the measured data to ensure that it meets the calculation requirements in GB/T 5171.21-2016.