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參數資料
| 型號： | SA9105E |
| 廠商： | SAMES |
| 元件分類： | 電能質量分析儀 |
| 英文描述： | THREE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| 中文描述： | 單向三相功率/電能計量IC瞬時脈沖輸出 |
| 文件頁數： | 5/12頁 |
| 文件大小： | 123K |
| 代理商： | SA9105E |
SA9105E
sames
41/12
PIN DESCRIPTION (Continued)
Pin
Pin
PLCC
DIP
12
24
34
44
NC
NC
NC
NC
Not connected
Designation Description
FUNCTIONAL DESCRIPTION
The SAMES SA9105E is a CMOS mixed signal Analog/Digital integrated circuit, which
performs three phase power/energy calculations over a range of 1000:1, to an overall
accuracy of better than Class 1.
The integrated circuit includes all the required functions for 3-phase power and energy
measurement such as oversampling A/D converters for the voltage and current sense
inputs, power calculation and energy integration. Internal offsets are eliminated through
the use of cancellation procedures.
The SA9105E generates pulses, the frequency of which is proportional to the power
consumption. Three frequency outputs (FOUT1, FOUT2 and FOUT3) are available. The
pulse rate follows the instantaneous power measured.
1.
Power Calculation
In the Application Circuit (Figure 1), the mains voltages from Line 1, Line 2 and Line
3, are converted to currents and applied to the voltage sense inputs IVP1, IVP2 and
IVP3.
The current levels on the voltage sense inputs are derived from the mains voltage
(3 x 230 VAC) being divided down through voltage dividers to 14V. The resulting
input currents into the A/D converters are 14
μ
A through the resistors R
15
, R
16
and
R
17
.
For the current sense inputs the voltage drop across the current transformers
terminating resistors are converted to currents of 16
μ
A for rated conditions, by
means of resistors R
8
, R
9
(Phase 1); R
10
, R
11
(Phase 2) and R
12
, R
13
(Phase 3).
The signals providing the current information are applied to the current sensor inputs
IIN1, IIP1; IIN2, IIP2 and IIN3, IIP3.
In this configuration, with the mains voltage of 3 x 230 V and rated currents of 80A,
the output frequency of the SA9105E energy metering integrated circuit at FOUT1
is 1.16kHz. In this case 1 pulse will correspond to an energy consumption of 3 x 18.4
kW/1160Hz = 47.6 Ws.
The output frequency at FOUT2 is FOUT1/4. At FOUT3 the output frequency is
FOUT1/290.
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相關代理商/技術參數 |
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| SA9105EFA | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9105EPA | 制造商:SAMES 功能描述: |
| SA9105F | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9105FFA | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9105FPA | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
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