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| 型号： | 71M6511-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 48/115页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO 71M6511 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： | 否 |
| 已用 IC / 零件： | 71M6511 |
| 已供物品： | 2 个板，线缆，CD，电源 |
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71M6511/71M6511H Demo Board User’s Manual
10.
E 60 ? E 300 =
E 0 + E 180 + 2
cos( φ S )
tan( 60 ) sin( φ S )
? ?
φ S = tan ? 1 ? ?
11.
12.
E 60 ? E 300 = ( E 0 + E 180 + 2 ) tan( 60 ) tan( φ S )
? ( E 60 ? E 300 ) ?
? tan( 60 )( E 0 + E 180 + 2 ) ?
Now that we know the A XV , A XI , and φ S errors, we calculate the new calibration voltage gain coefficient from
the previous ones:
CAL _ V NEW =
CAL _ V
A XV
? tan( φ S ) 1 + ( 1 ? 2 ? 9 ) 2 ? 2 ( 1 ? 2 ? 9 ) cos( 2 π f 0 T ) ] ?
[
]
? ( 1 ? 2 ) sin( 2 π f 0 T ) ? tan( φ S ) 1 ? ( 1 ? 2 ) cos( 2 π f 0 T ) ?
We calculate PHADJ from φ S , the desired phase lag:
PHADJ = 2 20 ? ? 9 ? 9 ?
And we calculate the new calibration current gain coefficient, including compensation for a slight gain
increase in the phase calibration circuit.
PHADJ ? 2 ( 1 ? 2 ? 9 ) cos( 2 π f 0 T ))
PHADJ ( 2 + 2
CAL _ I NEW =
CAL _ I
A XI
1 +
2
? 20
1
? 20
1 ? 2 ( 1 ? 2 ? 9 ) cos( 2 π f 0 T ) + ( 1 ? 2 ? 9 ) 2
2.2
CALIBRATION PROCEDURES
Calibration requires that a calibration system is used, i.e. equipment that applies accurate voltage, load
current and load angle to the unit being calibrated, while measuring the response from the unit being
calibrated in a repeatable way. By repeatable we mean that the calibration system is synchronized to the
meter being calibrated. Best results are achieved when the first pulse from the meter opens the
measurement window of the calibration system. This mode of operation is opposed to a calibrator that opens
the measurement window at random time and that therefore may or may not catch certain pulses emitted by
the meter.
It is essential for a valid meter calibration to have the voltage stabilized a few seconds
before the current is applied. This enables the Demo Code to initialize the 71M6511/6511H
and to stabilize the PLLs and filters in the CE. This method of operation is consistent with
meter applications in the field as well as with metering standards.
Each meter phase must be calibrated individually. The procedures below show how to calibrate a meter
phase with either three or five measurements. The PHADJ equations apply only when a current transformer
is used for the phase in question. Note that positive load angles correspond to lagging current (see Figure
2-2).
Page: 48 of 115
? 2005-2007 TERIDIAN Semiconductor Corporation
Revision 5.4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6511H | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase Energy Meter IC |
| 71M6511H-DB | 功能描述:开发板和工具包 - 8051 71M6511H Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
| 71M6511H-IGT | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase Energy Meter IC |
| 71M6511H-IGT/F | 功能描述:计量片上系统 - SoC Highly Integrated SoC w/MCU Core RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 71M6511H-IGTR | 制造商:Maxim Integrated Products 功能描述:RESID. HI PRECISION METR (1P, .1%) - Tape and Reel |
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