参数资料
型号: 71M6515H-DB
厂商: Maxim Integrated Products
文件页数: 33/66页
文件大小: 0K
描述: BOARD DEMO 71M6515H ENERGY METER
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6515H
已供物品: 2 个板,线缆,CD,电源
71M6515H Demo Board User’s Manual
71M6511/71M6513/71M6515 Calibration Worksheet
Five Measurements
Results will show in green fields…
Enter values in yellow fields!
PI
Ts
0.023803667
REV
Date:
4.0
9/28/2005
AC frequency:
60
[Hz]
Author:
WJH
(click on yellow field to select from pull-down list)
PHASE A:
Energy reading at 0°
% fraction
2 0.02
CAL_IA
16219
Voltage
Energy reading at +60°
Energy reading at -60°
2.5
1.5
0.025
0.015
CAL_VA
PHADJ_A
16222
445
+60°
Energy reading at 180°
Voltage error at 0°
Expected voltage
2
1
240
0.02
0.01
242.4
Measured voltage
Positive
direction
Current lags
voltage
(inductive )
Current
PHASE B:
Energy reading at 0°
Energy reading at +60°
Energy reading at -60°
%
2
2
2
fraction
0.02
0.02
0.02
CAL_IB
CAL_VB
PHADJ_B
16223
16222
0
-60°
Current leads
voltage
(capacitive )
Energy reading at 180°
Voltage error at 0°
2
1
0.02
0.01
Expected voltage
PHASE C:
240
%
242.4
fraction
Measured voltage
Generating Energy
Voltage
Using Energy
Energy reading at 0°
Energy reading at +60°
0
0
0
0
CAL_IC
CAL_VC
16384
16384
Energy reading at -60°
0
0
PHADJ_C
0
Readings: Enter 0 if the error is 0%,
Energy reading at 180°
Voltage error at 0°
Expected voltage
0
0
240
0
0
240
Measured voltage
enter +5 if meter runs 5% fast,
enter -3 if meter runs 3% slow.
Figure 2-4: Calibration Spreadsheet for Five Measurements
2.1.8
COMPENSATING FOR NON-LINEARITIES
Nonlinearity is most noticeable at low currents, as shown in Figure 2-5, and can result from input noise and
truncation. Nonlinearities can be eliminated using the QUANT_W variable.
12
10
8
6
4
2
0
error
0.1
1
10
100
I [A]
Figure 2-5: Non-Linearity Caused by Quantification Noise
The error can be seen as the presence of a virtual constant noise current. While 10mA hardly contribute any
error at currents of 10A and above, the noise becomes dominant at small currents.
Revision 2.0
? Copyright 2005 TERIDIAN Semiconductor Corporation
33 of 66
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