Electric Motor Insights and Industry News
The specific scope of CCC compulsory certification for low-voltage motors is as follows:It applies to low-power drive motors with a rated voltage above 36V (excluding 36V) and below DC 1500V or AC 1000V, including:
Components imported for the exclusive purpose of manufacturing finished products that will be entirely exported may apply for an exemption from CCC certification. The applicant must be the factory/company that uses these components.
NEMA standard enclosure types and their corresponding application environments, and convert NEMA enclosure type ratings to ANSI/IEC 60529 enclosure classification designations (IP).
IEEE 841-2021: For ultra-high-efficiency, heavy-duty, fully enclosed, low-voltage squirrel-cage induction motors for the petrochemical industry, with a power range of 0.75 kW to 370 kW (1 hp to 500 hp). API 541 and API 547: For high-voltage motors for the petrochemical industry. The specific differences between the two are as follows
When a NEMA motor has special mounting dimensions, flanges, or special shaft features, this is indicated by adding a suffix letter to its frame number.
The reasons for the reduction of motor insulation performance include environmental factors, material aging, mechanical damage, electrical problems, etc. The following methods can be used to deal with them.
SPM, or surface permanent magnet synchronous motor, is characterized by its permanent magnets being directly attached to the rotor surface. In contrast, IPM, or internal permanent magnet synchronous motor, is designed and placed inside the rotor.
The protection level is also called the IP level. The larger the number, the better the protection performance, and of course the higher the price. The IP (INGRESS PROTECTION) protection level system was drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION) to classify electrical appliances according to their dust and moisture resistance characteristics.
When the motor is running, copper loss, iron loss and mechanical loss are all manifested in the form of heat. Part of this heat is absorbed by the motor and part is transmitted to the air. The heat ab
Non-Hazardous LocationsType 1 : General Purpose - IndoorEnclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment and
