MAXQ3183-RAN+ datasheet(53/102 Pages) MAXIM

53 / 102 page

Low-Power, Multifunction, Polyphase AFE

with Harmonics and Tamper Detect

______________________________________________________________________________________

Power Factor

Power Factor (PF.T) (0x867)

This signed register contains the power factor of the total power. The power factor is calculated as:

It is expressed in units of 0.00001; thus, unity power factor is expressed as decimal 100,000

(0x00000000000186A0). This register is presented as a two’s complement value, so that a load delivering real power

to the line (that is, reverse power) is seen as having a power factor of -1 (0x0000FFFFFFFE7960).

Energy

Real Energy, Phase A/B/C/T (ENRP.X) (A: 0x8C1, B: 0x8C2, C: 0x8C4, T: 0x8C7)

This signed register contains the real accumulated energy delivered into phase A/B/C or total. The register is calcu-

lated according to the following formula:

ENRP.X = ENR_CC x (X.EAPOS - X.EANEG)

Reactive Energy, Phase A/B/C/T (ENRQ.X) (A: 0x8D1, B: 0x8D2, C: 0x8D4, T: 0x8D7)

This signed register contains the reactive accumulated energy delivered into phase A/B/C or total. The register is

calculated according to the following formula:

ENRQ.X = ENR_CC x (X.ERPOS - X.ERNEG)

Apparent Energy, Phase A/B/C/T (ENRS.X) (A: 0x871, B: 0x872, C: 0x874, T: 0x877)

This register contains the apparent accumulated energy delivered into phase A/B/C or total. The register is the prod-

uct of the ENR_CC and X.ES registers.

PF T

A ACT

B ACT

C ACT

A APP

B APP

C APP

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

Byte 7 (MSByte unused)

Byte 6 (unused)

Byte 5

Byte 4

Byte 3

Byte 2

Byte 1

Byte 0 (LSByte)

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