Improvement of an Automated AC/DC Voltage Transfer Calibration System at the Standards and Calibration Laboratory

This paper describes the recent improvement of the AC/DC voltage transfer calibration system at the Standards and Calibration Laboratory (SCL) of Hong Kong. The measurement system has been recently modified with an enclosure, a switching relay and an automated control program. With these new implementations, the switching time and the switching pattern were studied and compared with the original design.