CT Lab Vecto III User Manual

Vecto III User Manual
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2.3.10 10/12-Cycle Block Recording
The Vecto III records all RMS and harmonic data from each 10/12-cycle block (≈200ms
block) for both voltage and current as prescribed the Class A performance
requirements of the IEC 61000-4-30, edition 3.
These block values contain both amplitude and angle information of all voltage and
current harmonic components up to the 63
rd
harmonic order.
Each block is time-stamped with a 20 s time resolution and within a 1 s time
uncertainty
1
.
The user can average N x blocks to reduce the sampling rate for the number of blocks
up to 299 blocks
2
.
Please refer to the Osprey Lite
TM
user manual for more information on 10/12 cycle
block intervals and down sampling.
2.3.11 Variable time interval trends
10/12-Cycle block RMS and harmonic parameters are aggregated according to IEC
61000-4-30 requirements over a user-defined time interval (1 to 30 minutes).
Clock synchronised parameters are time-stamped with a 1 second time resolution.
2.3.12 Synchrophasors
The Vecto III is also a phasor measurement recorder. Recording of 50 Hz (or 60 Hz)
synchrophasors can be activated in the configuration setup.
Please refer to the Osprey Lite
TM
user manual for more information.
Note that this can generate large amounts of data.
Contact CT LAB for support if interested in a PMU (Phasor Measurement Unit)
application.
1
When GPS synchronized
2
Averaged block harmonic and unbalance phasors do not contain angle information.

CT Lab Vecto III Specifications

General

Brand	CT Lab
Model	Vecto III
Category	Measuring Instruments
Language	English