Rainbow Electronics MAX1314 - Manual (Page 31)

MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
______________________________________________________________________________________ 31
3-Phase Power-Monitoring System
The 8-channel devices are well suited for use in
3-phase power monitoring (Figure 16). The simultane-
ously sampled eight channels eliminate the need for
complicated DSP algorithms that realign sequentially
sampled data into a simultaneous sample set.
12-BIT
ADC
MICROCONTROLLER
LOAD
I P1 I P2 I P3 V P2
PHASE 1
NEUTRAL
PHASE 2
PHASE 3
V P1
V NEUTRAL V P3
BUFFERS
AND INPUT
PROTECTION
I Pn
T/H
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
CURRENT
TRANSFORMER
POWER
GRID
MAX1312
LOAD LOAD
Figure 16. 3-Phase Power Monitoring