What do the "Tvs" parameters mean in the setup registers of the Harmonics Measurement Module?

Product Line

ION7550/ION7650

ION8800

PM8000

Environment

ION Framework

Resolution

'Tvs value' stands for 'Time versus Value'. These are 3 second rms values.

There is no upper limit for pulsing the evaluation input and there is no point in pulsing this module more frequently than 1x/second. By default is updates every 1 second.

If the Evaluation input is not linked and the Tvs Aggregate or Tvs Maximum mode is selected is select, a 3 second interval will be used.

Aggregate: the output of the module will be the 3 sec average harmonic (average of the 3 x 1 second Tvs values).

Maximum: then the output will be the largest value of the 3 x 1 second values.

Demand input is only used when display mode is set to Magnitude Outputs Displayed as Percentages or the THD Display Mode is set to Percentages. The input would a value like V1 Tot HD from a harmonics Measurement Module

Released for: Schneider Electric Canada