ATM90E32AS-AU-R datasheet(16/84 Pages) ATMEL

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M90E32AS [Datasheet]

Atmel-46003B-SE-M90E32AS-Datasheet_02122015

3.6

MEASUREMENT FUNCTION

Measured parameters can be divided to 8 types as follows:

Active/ Reactive/ Apparent Power

Fundamental/ Harmonic Power

RMS for Voltage and Current

Power Factor

Phase Angle

Frequency

Temperature

Peak Value

Measured parameters are average values that are averaged among 16 phase-voltage cycles (about 320ms at 50Hz)

except for the temperature. The measured parameter update frequency is approximately 3Hz. Refer to Table-17.

3.6.1

ACTIVE/ REACTIVE/ APPARENT POWER

Active/ Reactive/ Apparent Power measurement registers can be divided as below:

active, reactive, apparent power

all-phase-sum / phase A / phase B / phase C

Altogether there are 12 power registers. Refer to 5.6.1 Power and Power Factor Registers.

Per-phase apparent power is defined as the product of measured Vrms and Irms of that phase.

All-phase-sum power is measured by arithmetically summing the per-phase measured power. The summing of phases can

be configured by the MMode0 register.

3.6.2

FUNDAMENTAL / HARMONIC ACTIVE POWER

Fundamental / harmonic active power measurement registers can be divided as below:

fundamental and harmonic power

all-phase-sum / phase A / phase B / phase C

Altogether there are 8 power registers. Refer to 5.6.2 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers.

3.6.3

MEAN POWER FACTOR (PF)

Power Factor is defined for those cases: all-phase-sum / phase A / phase B / phase C.

Altogether there are 4 power factor registers. Refer to 5.6.1 Power and Power Factor Registers.

For all-phase:

For each of the phase::

3.6.4

VOLTAGE / CURRENT RMS

Voltage/current RMS registers can be divided as follows:

Per-phase: Phase A / Phase B / Phase C

Voltage / Current

Neutral Line Current RMS:

Neutral line current can be calculated by instantaneous value

Altogether there are 7 RMS registers.

Refer to 5.6.2 Fundamental/ Harmonic Power and Voltage/ Current RMS Registers.

ower

apparent_p

sum

All_phase_

active_pow

sum

All_phase_

PF_all

ower

apparent_p

active_pow

PF_phase

ATM90E32AS-AU-R Datasheet(PDF) 16 Page - ATMEL Corporation

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