The six level energy efficiency standard is mainly for external power products. With the enhancement of people's awareness of energy conservation and environmental protection, the requirements for external power supply (such as current adapter, switching power supply, charger, etc.) are becoming higher and higher. China will officially launch the six level energy efficiency standard in 2016. The no-load power consumption requirements for the efficiency of external power supply in active mode are higher than the current requirements, so the requirements for power meter for power measurement are higher, According to the current American and European standards, the accuracy of the power meter shall not be less than 0.15%.
In fact, the main test point of the six level energy consumption of the adapter is the small current measurement with harmonics. Generally speaking, it can not be met by using ordinary test instruments. You can see the power meter that meets the six level energy consumption, such as the power meter of zlgpa300 series, which is used more in the six level energy efficiency test.
