Osprey Lite
TM
classify and report on recorded data according to industry standards
such as NRS048, EN50160 and IEE1158. All communications are encrypted and each
device is password protected. More information can be obtained at ospreypro.com.
2.3.7 Sampling Rate
The device samples all analog input signals at a rate of 500 kHz (10 000 samples per
cycle) and then digitally down-sample the data to 50 kHz (1000 samples per cycle). All
IEC 610000-4-30 parameters are calculated based on this 50 kHz resolution for both
voltage and current.
Waveform and other events are triggered from the 500 kHz digitised waveforms.
These waveforms are locked to the fundamental frequency to prevent multiple zero
crosses.
Captured waveform data can be further subsampled to reduce stored data size. The
user can configure the waveform-sampling rate from 1 kHz to 50 kHz.
Please refer to the Osprey Lite
TM
user manual for more information on selecting the
down-sampling rate.
2.3.8 The 1/6
th
Sense
The Vecto III calculates a complete set of 1-cycle sliding RMS and fundamental phasor
parameters on each of the 3 voltage phases resulting in a resolution of 6 values per
cycle per phase. The IEC 61000-4-30 Class A requirements are based on a ½ cycle
sliding approach. This higher resolution data improves the detail of the event profile
and enable more accurate depth/duration calculations.
Please refer to the Osprey Lite
TM
user manual for more information on 1/6
th
cycle data.
2.3.9 Event Recording
Users can customise the recording of an event. The IEC 610000-4-30 definition of for
example a dip event, can be changed to improve the understanding of phenomena of
concern.
Upper and/or lower thresholds to define an event can be set by the user based on
waveform, 1/6
th
sense, 10/12-cycle block and aggregated parameters.
Single-phase and multiple-phase triggers can be defined.
When a threshold is exceeded, the Vecto III will retain pre- and post-diagnostic
information of the event.
Please refer to the Osprey Lite user manual for more information on event recordings.
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