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CSE7759B Datasheet(PDF) 22 Page - Core Technology (Shenzhen) Co., Ltd.

Part No. CSE7759B
Description  Calibration-free Electric Energy Measuring Chip
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Maker  CHIPSEA [Core Technology (Shenzhen) Co., Ltd.]
Homepage  http://www.chipsea.com/
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本资料为芯海科技专有财产,非经许可,不得复制、翻印或转变其他形式使用。
This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format
without prior permission of CHIPSEA
聚点滴之芯.成浩瀚之海
22/25
According to power coefficient= Calibration power cycle* Calibration power, power
frequency of at 1000W is:
������������′(��������)=
����1���� ∗ 10^9
Power coefficient ∗ ����2����
(Note: Refer to 3.5.2 for valuing of V1R and V2R)
Then, actual value of electric quantity at present is:
Current power (kW. h)=
total number of pulses
Number of pulses a kilowatt hour
=
���� × 65536 + ����
������������′ × 3600����
It is one kilowatt hour when 1000W load operates by one hour.
������������′ⅹ3600s in the above
example is the number of pulses after 1000W load operates by one hour. It means the number of
pulses generated by one kilowatt hour. Operating time of the load will change if the load varies
when the number of pulses in one kilowatt hour remains unchanged.
As for different hardware, theoretical value of number of pulses in one kilowatt hour
deviates from the actual value. If higher measuring accuracy is required, actual
������������′ must
be used for calculation.
3.8 voltage, current, active power calculation reference flow chart
In order to represent the voltage, current and active power flow, a typical application flow
chart is introduced.
3.8.1 voltage operation reference flow chart




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