Datasheet

90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Function Description 15 April 2, 2013
Figure-4 Energy Accumulation Diagram
For all-phase-sum total of active, reactive and (arithmetic sum)
apparent energy, the associated power is obtained by summing the
power of the three phases. The accumulation method of all-phase-sum
energy is determined by the EnPC/EnPB/EnPA/ABSEnP/ABSEnQ bits
(b0~b4, MMode0).
Note that the direction of all-phase-sum power and single-phase
power might be different.
CF Gen
Logic
CF pulse
Bi-directional
Energy
accumulator,
roll over
positive/
negative @
0.01CF
Forward
Energy
Accumulator
Backward
Energy
Accumulator
(-)0.01
CF
(+)0.01
CF
Phase-A
Phase-B
Phase-C
Per-
phase
Power
All-phase
sum Power
Pos-CF
Accumulator
Neg-CF
Accumulator
CF[1/2/34]RevST
Bi-directional
Energy
accumulator,
roll over
positive/
negative @
0.01CF
Forward
energy
accumulator
Backward
energy
accumulator
(-)0.01
CF
(+)0.01
CF
Bi-directional
Energy
accumulator,
roll over
positive/
negative @
0.01CF
Forward
energy
accumulator
Backward
energy
accumulator
(-)0.01
CF
(+)0.01
CF
Bi-directional
Energy
accumulator,
roll over
positive/
negative @
0.01CF
Forward
Energy
Accumulator
Backward
Energy
Accumulator
(-)0.01
CF
(+)0.01
CF
[P/Q]Ereg[A/B/C]PST
[P/Q]EregTPST
A/B/C
A/B/C
total