參數(shù)資料
型號(hào): 90E32ERGI
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP48
封裝: TQFP-48
文件頁(yè)數(shù): 57/67頁(yè)
文件大?。?/td> 777K
代理商: 90E32ERGI
90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Electrical Specification
60
August 24, 2011
7.2
METERING/ MEASUREMENT ACCURACY
7.2.1
METERING ACCURACY
Metering accuracy or energy accuracy is calculated with relative
error:
Where Emea is the energy measured by the meter, Ereal is the actual
energy measured by a high accurate normative meter.
%
100
×
=
real
mea
E
γ
Table-14 Metering Accuracy for Different Energy within the Dynamic Range
Energy Type
Energy Pulse
ADC Range
When Gain=1
Metering Accuracy
note 1
Active energy
(Per phase and all-phase-sum)
CF1
PF=1.0 120
V-600mV
0.1%
PF=0.5L, 180
V-600mV
PF=0.8C, 150
V-600mV
Reactive energy
(Per phase and all-phase-sum)
CF2
sinФ=1.0 120
V-600mV
0.2%
sinФ=0.5L, 180
V-600mV
sinФ=0.8C, 150
V-600mV
Apparent energy
(Per phase and arithmetic all-phase-sum)
CF2
600
V-600mV
note 2
0.2%
Fundamental active energy
(Per phase and all-phase-sum)
CF3
PF=1.0 120
V-600mV
0.2%
PF=0.5L, 180
V-600mV
PF=0.8C, 150
V-600mV
Harmonic active energy
(Per phase and all-phase-sum)
CF4
PF=1.0 120
V-600mV
0.5%
PF=0.5L, 180
V-600mV
PF=0.8C, 150
V-600mV
Note 1: All the parameters in this table is tested on IDT’s test platform.
Note 2: Apparent energy is tested using active energy with unity power factor since there’s no standard for apparent energy. Signal below 600
V is not tested.
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