Rainbow-electronics MAX1314 Manuale Utente Scaricare il pdf (Pagina 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

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