MAXQ3180 Maxim, MAXQ3180 Datasheet - Page 52

• Manufacturer Part Number: MAXQ3180
• Description: The MAXQ3180 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
This signed register contains the reactive instantaneous power delivered into phase A/B/C or total. Power is calculat-
ed from the instantaneous energy measurement according to the following equation:
The register is 8 bytes long, but the most signficant 2 bytes are not used. See the PWR_CC register description for
more details.
This register contains the apparent instantaneous power delivered into phase A/B/C or total. Power is calculated
from the instantaneous energy measurement according to the following equation:
The register is 8 bytes long, but the most significant 2 bytes are not used. See the PWR_CC register description for
more details.
52
______________________________________________________________________________________
Apparent Power, Phase X = A/B/C/T (PWRS.X) (A: 0x821, B: 0x822, C: 0x824, T: 0x827)
Reactive Power, Phase X = A/B/C/T (PWRQ.X) (A: 0x811, B: 0x812, C: 0x814, T: 0x817)
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
PWRQ X
PWRS X
.
.
=
=
X APP PWR CC
X REA PWR CC
.
.
×
×
NS
NS
_
_
× 2
× 2
16
16
Byte 6 (unused)
Byte 6 (unused)
Byte 0 (LSByte)
Byte 0 (LSByte)
Byte 4
Byte 2
Byte 4
Byte 2