IEC61000-4-30 published by International Electrotechnical Commission (IEC) is an international standard that specifies how power quality instruments should make measurements. Also it defines the exact measurement algorithms for power quality parameters such as power quality voltage, flicker, unbalance, harmonic, etc.

Currently the latest version of the standard is IEC61000-4-30, Edition 3 which was published in 2015.

There are two classes defined in this standard-Class A and Class S, Suin SA2100 power quality analyzer is classified as Class S instrument, whose accuracy and performance requirements are not as strict as Class A.

Total Harmonic Distortion (THD) is used to measure waveform distortion. Method THDF - total harmonic distortion referred to fundamental component was used on SA2200 and result will be expressed as a percentage.

Class A Power Quality Analysers are instruments that must meet Class A performance requirements of IEC61000-4-30 international standard, when  connected to the same signals, they produce the same results. Class A instruments must meet the highest performance and accuracy requirements in this standard.

Class A defines the measurement time accuracy (better than +/- 0.3 sec/day) for parameters such as voltage, current and harmonics. With defined methods and measurement uncertainties for Power Supply Voltage, Flicker, Voltage Unbalance, Voltage and Current Harmonic.

Suin SA2200 power quality analyzer complies with the IEC61000-4-30 Ed. 3 Class A standard. Certification for IEC62856-2 is currently being prepared and will be made public once obtained.

The operating time can last up to 6 hours when the screen brightness is at level 3. The battery charge time is about 6 hours.