Applicable:?Energy feedback devices.

Test purpose:?To verify the feedback efficiency and safety performance of the feedback device.

Test basis:?TSG T7007-2022 "Elevator Type Test Rules", GB/T 32271-2015 "Elevator Energy Feedback Device".

Test contents:?Determine the efficiency of the feedback device, short-circuit protection, open-circuit protection, access principle, anti-reverse discharge protection, polarity reverse connection protection, DC voltage overvoltage protection.