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參數(shù)資料
| 型號(hào)： | ADE7756EB |
| 廠(chǎng)商： | Analog Devices, Inc. |
| 英文描述： | Evaluation Board Documentation AD7756 Energy metering IC |
| 中文描述： | 評(píng)估板文檔AD7756電能計(jì)量IC |
| 文件頁(yè)數(shù)： | 5/15頁(yè) |
| 文件大小： | 3563K |
| 代理商： | ADE7756EB |
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PRELIMINARY TECHNICAL DATA
EVAL-ADE7756EB
–5–
REV. PrB 01/01
PRELIMINARY TECHNICAL DATA
SETTING UP THE ADE7756 EVALUATION BOARD
Shown below is a typical set up for the ADE7756 evalua-
tion board. In this example a kWh meter for a 3 wire,
single phase distribution system is shown. For a more
detailed description on how to use a CT as a current
transducer see the
Current Sense Inputs
section of this docu-
mentation. The line voltage is connected directly to the
evaluation board as shown. Note JP7 should be left open
to ensure that the attenuation network is not bypassed.
Also note the use of two power supplies. The second
power supply is used to power the optical isolation. With
JP14 left open, this will ensure that there is no electrical
connection between the high voltage test circuit and the
PC. The power supplies should have floating voltage
outputs.
+
-
5.000 V
+
-
5.000 V
P
N
1.0666 Hz
Load
V1N
110V
JP1 = Open
JP2 = Open
JP3 = Open
JP4 = Open
JP5 = B
JP6 = B
JP7 = Open
JP8 = Open
JP9 = Open
JP10 = Closed
JP11 = Closed
JP12 = B
JP13 = Open
JP14 = Open
JP15 = Closed
JP19 = B
JP20 = Closed
JP21 = Closed
JP25 = Closed
JP9
JP8
R53
C53
R54
V2P
450mV
CT
V1P
SH1B
2.5
10A
1:2000
25mV
25mV
SK2
AGND
P
110V
2.5
SH1A
Load
10A
SK1
255k
255k
1k
BNC2
220V
1k
33nF
C54
R57
V2N
V+
V-
SK5
SK4
D
D
+
To PC
Parallel Port
JP7
JP10
110V
Figure 6 - Typical set up for the ADE7756 evaluation board
The evaluation board is connected to the PC parallel port
using the cable supplied. The cable length should not
exceed 6 feets (2 meters) or the serial communication
between the PC and the evaluation board may become
unpredictable and error prone.
When the evaluation board has been powered up and is
connected to the PC, the supplied software can be
launched. The software will automatically start in energy
meter mode. The next section describes the ADE7756
evaluation software in detail and how it can be installed
and uninstalled.
Figure 5 - ADE7756 evaluation board jumper positions
JP20
JP15
JP1
JP25
JP3
JP2
JP4
JP9
JP51
AD7756
JP10
JP7
JP8
JP13
JP11
JP5
JP6
JP19
JP12
JP21
JP14
A B
A B
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