During the operation of air conditioners, refrigerators, vacuum cleaners and other household appliances, the working state will be changed frequently, resulting in a wide range of changes in the working current, and the current can be reduced from tens of amps to several milliamps. General power measuring instruments only allow integral measurement in the same range. If the measured value exceeds the current maximum range, the measurement result is inaccurate, and it is necessary to manually switch the range before integrating, and it is impossible to continuously measure the integration of large dynamic current change equipment.

At present, the power of high-power household appliances on the market is mostly below 3000W. The Energy Efficiency Test Equipment series of Guangzhou HongCe Equipment Co., Ltd. includes Energy Efficiency Test Equipment For Vacuum Cleaners, Performance Test Equipment For Washing Machine, Electric Water Heater Energy Efficiency Test Equipment. Among them, the implementation standard of Energy Efficiency Test Equipment For Vacuum Cleaners is: IEC 62885-2 Surface Cleaning Equipment - Part 2: Dry Vacuum Cleaners for Household or Similar Use - Methods of Measuring Performance Clauses 5.1, 5.2, 5.3, 5.8 for air Alternative B-devices for data testing, 6.16. It is a dedicated system for performance testing of dry vacuum cleaners. The whole system consists of dust removal and dust test platform, air performance test platform, dusting platform, carpet hanger, variable frequency power supply and central control cabinet.