MAXQ3183 Maxim, MAXQ3183 Datasheet - Page 98

• Manufacturer Part Number: MAXQ3183
• Description: The MAXQ3183 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load
• Manufacturer: Maxim

Low-Power, Multifunction, Polyphase AFE
with Harmonics and Tamper Detect
This register contains the instantaneous apparent power delivered into phase A/B/C or total at the fundamental line
frequency only. Power is calculated from the instantaneous energy measurement according to the following equation:
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:
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:
98
______________________________________________________________________________________
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
ENRQF.X = ENR_CC x (X.ERFPOS - X.ERFNEG)
ENRPF.X = ENR_CC x (X.EAFPOS - X.EAFNEG)
PWRSF X
Fundamental Reactive Energy, Phase A/B/C/T (ENRQF.X)
Fundamental Apparent Power, Phase A/B/C/T (PWRSF.X)
Fundamental Real Energy, Phase A/B/C/T (ENRPF.X)
.
=
X APPF
.
×
(A: 0x8A1, B: 0x8A2, C: 0x8A4, T: 0x8A7)
(A: 0x8E1, B: 0x8E2, C: 0x8E4, T: 0x8E7)
PWR CC
(A: 0x8F1, B: 0x8F2, C: 0x8F4, T: 0x8F7)
NS
_
× 2
16
Byte 6 (unused)
Byte 6 (unused)
Byte 6 (unused)
Byte 0 (LSByte)
Byte 0 (LSByte)
Byte 0 (LSByte)
Byte 4
Byte 2
Byte 4
Byte 2
Byte 4
Byte 2