参数资料
型号: 71M6513H-DB
厂商: Maxim Integrated Products
文件页数: 52/112页
文件大小: 0K
描述: BOARD DEMO 71M6513H 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: 71M6513H
已供物品: 2 个板,线缆,CD,电源
71M6513/71M6513H Demo Board User’s Manual
Calibration Procedure for Rogowski Coils
Enter values in yellow fields!
Results will show in green fields…
Step 1: Enter Nominal Values:
Nominal CAL_V
Nominal CAL_I
PHADJ
16384
16384
-3973
Resulting Nominal
Values: X 6
Kh (Wh) 0.440
REV
Date:
Author:
4.3
11/18/2005
WJH
WRATE
VMAX
179
600
Calibration Frequency [Hz]
50
Angle Sensitivity (deg/LSB)
IMAX (incl. ISHUNT)
30.000
50Hz
5.60E-04
PULSE_FAST
PULSE_SLOW
-1
-1
1
1
1
-1
50
60
32768
-32768
NACC
2520
Step 2: VRMS Calibration:
Phase A
Phase B Phase C
Enter old CAL_VA
Input Voltage Applied
Measured Voltage
CAL_Vx
16384 16384 16384
240 240 240
235.612 236.55 234.72
16689 16623 16753
Step 3: Current Gain and Phase Calibration
Phase A
Deg/ct 5.60E-04
Phase B Phase C
old PHADJ -3973 -3973 -3973
Old CAL_Ix 16384 16384 16384
%Error, 60° -3.712 -3.912 -5.169
%Error, -60° -3.381 -2.915 -4.241
%Error, 0° -3.591 -3.482 -4.751
%Error, 180° -3.72 -3.56 -4.831
Phase Error (°) 0.0547319 0.1647659 0.1533716
PHADJ -4070.74 -4267.22 -4246.88
CAL_Ix 17005.641 16981.934 17208.457
Step 4: Crosstalk Calibration (Equalize Gain for 0° and 180°)
VRMS 240
IRMS 0.30
Phase A
Phase B
Phase C
Old VFEEDx 0 0
% Error, 0deg 1.542 1.61
%Error, 180deg -1.634 -1.743
VFEEDx -13321 -14064
0
1.706
-1.884
-15058
1. Rogowski coils have significant crosstalk from voltage to current. This contributes to gain and phase errors.
2. Therefore, before calibrating a Rogowski meter, a quick 0° load line should be run to determine
at what current the crosstalk contributes at least 1% error.
3. Crosstalk calibration should be performed at this current or lower.
4. If crosstalk contributes an E0 error at current Ix, there will be a 0.1% error in E60 at 15*Ix.
Figure 2-5: Calibration Spreadsheet for Rogowski coil
Page: 52 of 112
? 2005-2006 TERIDIAN Semiconductor Corporation
Revision 5.6
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