UG-572 Datasheet, PDF (7/20 Pages) Winchester Electronics Corporation – C JACK

EVAL-ADE7978EBZ User Guide
SETTING UP THE EVALUATION BOARD
AS AN ENERGY METER
Figure 8 shows a typical setup for the ADE7978/ADE7933
evaluation board. In this example, an energy meter for a
3-phase, 4-wire, wye distribution system is shown. Shunts are
used to sense the phase currents and are connected as shown in
Figure 8. The line voltages are connected directly to the board
as shown. The board is supplied from one power supply
provided by the PC through the USB cable.
Figure 9 shows a setup for the ADE7978/ADE7933 evaluation
board as an energy meter for a 3-phase, 3-wire, delta distri-
bution system. The Phase B voltage is considered as reference
and the V1PIN test pins of Phase A and Phase C ADE7933
isolated ADCs are connected to it.
PHASE C
PHASE B
PHASE A
GND_A
IMIN_A
IPIN_A
V1PIN_A
GND_B
IMIN_B
IPIN_B
V1PIN_B
PHASE A
ADE7933
PHASE B
ADE7933
GND_C
IMIN_C
IPIN_C
V1PIN_C
PHASE C
ADE7933
AGND_N
IMIN_N
IPIN_N
PHASE N
ADE7933
LOAD
Figure 8. Typical Setup for the ADE7978/ADE7933 Evaluation Board
for 3-Phase, 4-Wire, Wye Distribution System
UG-572
PHASE C
PHASE B
PHASE A
GND_A
IMIN_A
IPIN_A
V1PIN_A
GND_C
IMIN_C
IPIN_C
V1PIN_C
PHASE A
ADE7933
PHASE C
ADE7933
LOAD
Figure 9. Typical Setup for the ADE7978/ADE7933 Evaluation Board for
3-Phase, 3-Wire, Delta Distribution Systems
Using the Evaluation Board with Another Microcontroller
It is possible to manage the ADE7978/ADE7933 evaluation
board with a different microcontroller mounted on another
board. The evaluation board can be connected to this second
board through the P7 connector. The SDP interface and the
SDP Blackfin boards are, in this case, unused.
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