QB/T 4981-2026Technical specification of DC inverter driver for washing machines (English PDF)

QB/T 4981-2026 is the English-translated version of 洗衣机直流变频驱动装置技术规范.

QB/T 4981-2026 is a technical specification for the DC inverter driver used in washing machines. The driver is the electronic unit that controls a direct-current variable-frequency motor in the machine. The document treats it as a product and deals with the driver. It does not cover the washing machine as a whole, and it is classed as a product standard issued by the Ministry of Industry and Information Technology.

Washing machine manufacturers, makers of motor drive electronics, component buyers and testing laboratories would use the document. It is voluntary, as the /T in the code shows. It was issued on 13 February 2026 and takes effect on 1 September 2026, and it replaces QB/T 4981-2016. Readers who source drivers for new washing machine models will find that it gives them a common reference for what they buy.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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