Powerlogic: Class A all the way
Schneider Electric was the first company in the world to receive certification for the IEC 61000-4-30 Class A power quality standard by Power Standards Lab for our high-end power and energy meters.
PQ data collected by these meters is reliable, repeatable and comparable to results gained from any Class A compliant device, regardless of manufacturer or environmental conditions. This also increases the validity and value of any further analysis performed with the data.
Class A measurements should be required wherever precise measurements are necessary: for contractual applications, for verifying compliance with standards, and for resolving disputes.
Power Standards Lab was heavily involved in the development of the IEC 61000-4-30 standard. They continue to provide guidance as the standard evolves.