Difference between the transient and other event waveforms (power quality analyzers)

Difference between the transient and other event waveforms (power quality analyzers)

Question

Why are the waveforms recorded by the PQ3198/PW3198 different between transient and other events?

Answer

The PQ3198/PW3198 measures normal power quality items and transient overvoltage separately and differently:
* Normal power quality event:  200kS/s, waveform saved for "2 cycles + 200ms + 2 cycies" after thinning to 20kS/s
* Transient overvoltage:  2MS/s, waveform saved for 2ms before and after detection as 2MS/s data through 5kHz LPF to remove the fundamental  frequency component.
Applicable models:  PQ3198, PW3198, 9624-50, 3196