T/CNGMA 029-2025 External rotor motor

Scope

This document specifies the classification and basic parameters, usage conditions, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, as well as quality commitments of external rotor motors. This document is applicable to permanent magnet brushless DC or AC external rotor motors (hereinafter referred to as "motors") adopting electronic commutation (EC) technology, mainly used in ventilation equipment, HVAC systems, refrigeration equipment, industrial automation equipment, electric tools, and other similar drive applications. 4. Classification and Basic Parameters 4.1 Product Classification 4.1.1 Classification by working principle and commutation method 4.1.2 Classification by cooling method 4.1.3 Classification by protection grade 4.1.4 Classification by structural features and integration degree 4.1.5 Classification by main application fields 4.2 Basic Parameters 4.2.1 Composition of basic parameters 4.2.2 Definition and requirements of key parameters 4.2.3 Parameter marking 5. Usage Conditions 5.1 Normal Environmental Conditions 5.1.1 Altitude 5.1.2 Ambient temperature 5.1.3 Relative humidity of ambient air 5.1.4 Ambient air pressure 5.1.5 Pollution level 5.1.6 Cooling medium 5.2 Electrical Conditions 5.2.1 Power supply 5.2.2 Steady-state deviation of voltage and frequency 5.2.3 Dynamic deviation of voltage and frequency 5.3 Mechanical Installation and Operating Conditions 5.3.1 Installation position 5.3.2 Vibration and impact 5.3.3 Load connection 5.4 Other Conditions 5.4.1 Operating mode 5.4.2 Transportation and storage conditions 6. Technical Requirements 6.1 Basic Requirements 6.2 Appearance and Structural Requirements 6.2.1 Appearance quality 6.2.2 Outline and installation dimensions 6.2.3 Assembly quality 6.3 Key Performance Indicator Requirements 6.3.1 Rated parameters 6.3.2 Efficiency and power factor 6.3.3 Starting pe

Development Information

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