Appendix; Measurements; Definition; Sampling - AEMC PEL 52 User Manual

Power & energy logger

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Geometric representation of active and reactive powers.

Reactive power consumed

Reactive power supplied

The reference of this diagram is the current vector (fixed on the right-hand part of

the axis).

The voltage vector V varies in its direction as a function of the phase angle φ.

The phase angle φ, between voltage V and current I, is considered positive in the

mathematical sense of the term (counterclockwise).

The device calculates the following quantities every second on the basis of

measurements over a cycle, according to § 8.2.

"1 s" quantities are used for:

Real-time values.

■

Trends over 1 second.

■

Aggregation of values for "aggregated" trends .

■

Determination of minimum and maximum values for the values of

■

"aggregated" trends.

All "1 s" quantities can be recorded on the SD card during the recording session.

8. APPENDIX

Active power

supplied

Figure 32

Power & Energy Logger Model PEL 52 - User Manual

Active power

consumed

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