收藏本站
ADE7755
NO LOAD THRESHOLD
The ADE7755 also includes a no load threshold and start-up
current feature that eliminates any creep effects in the meter. The
ADE7755 is designed to issue a minimum output frequency in all
modes except when SCF = 0 and S1 = S0 = 1. The no load detection
threshold is disabled in this output mode to accommodate
specialized application of the ADE7755. Any load generating a
frequency lower than this minimum frequency will not cause a
pulse to be issued on F1, F2, or CF. The minimum output
frequency is given as 0.0014% of the full-scale output frequency
for each of the f i frequencies (i = 1, 2, 3, or 4), see Table 6.
For example, in an energy meter with a meter constant of
100 imp/kWh on F1 and F2 using f 2 (3.4 Hz), the maximum
output frequency at F1 or F2 is 0.0014% of 3.4 Hz or 4.76 × 10 ?5 Hz.
This is 3.05 × 10 ?3 Hz at CF (64 × F1 Hz). In this example, the no
load threshold is equivalent to 1.7 W of the load or a start-up
current of 8 mA at 220 V. IEC 1036 states that the meter must
start up with a load current equal to or less than 0.4% Ib. For a
5 A (Ib) meter, 0.4% Ib is equivalent to 20 mA. The start-up
current of this design therefore satisfies the IEC requirement.
As illustrated in this example, the choice of f i frequency
(i = 1, 2, 3, or 4) and the ratio of the stepper motor display
determine the start-up current.
Rev. A | Page 19 of 20
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ADE7757ARNZRL IC ENERGY METERING 1PHASE 16SOIC
ADE7758ARWZRL IC ENERGY METERING 3PHASE 24SOIC
ADE7761AARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7761BARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7768ARZ-RL IC ENERGY METERING 1PHASE 16SOIC
ADE7769ARZ-RL IC ENERGY METERING 1PHASE 16SOIC
ADM8843ACPZ-REEL7 IC LED DRVR WHITE BCKLGT 16LFCSP
ADP1653ACPZ-R7 IC LED DRVR PHOTO FLASH 16-LFCSP
相关代理商/技术参数
ADE7755ARSZ1 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with Pulse Output
ADE7755ARSZRL 功能描述:IC ENERGY METERING 1PHASE 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:*
ADE7756 制造商:AD 制造商全称:Analog Devices 功能描述:Active Energy Metering IC with Serial Interface
ADE7756AN 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin PDIP
ADE7756AN-REF 制造商:AD 制造商全称:Analog Devices 功能描述:Active Energy Metering IC with Serial Interface
ADE7756ARS 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP 制造商:Analog Devices 功能描述:ENERGY METERING IC WITH SERIAL INTERFACE - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:ENERGY METERING IC WITH SERIAL INTERFACE - Bulk
ADE7756ARSRL 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP T/R 制造商:Analog Devices 功能描述:ENERGY METERING IC WITH SERIAL INTERFACE - Tape and Reel
ADE7756ARSZ 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP 制造商:Analog Devices 功能描述:PBFR ENERGYMETERICW/ SERIAL INTERFACE - Rail/Tube