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參數(shù)資料
| 型號： | SA9605 |
| 廠商： | SAMES |
| 元件分類： | 電能質(zhì)量分析儀 |
| 英文描述： | THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| 中文描述： | 三相功率/電能計量IC瞬時脈沖輸出 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 107K |
| 代理商： | SA9605 |
SA9605A
sames
9/14
The only changes which now have to be implemented to interface the device to different
rated systems are: change the current sense resistors; and select the required PGM0
and PGM1.
No change to the post divider or micro-controller software is required if the FOUT2 pin
is used as described.
TYPICAL APPLICATION
In the Application Circuit (Figure 1), the components required for a three phase power
metering application are shown.
Terminated current sensors (current transformers) are connected to the current sensor
inputs of the SA9605A through current setting resistors (R
8
..R
13
).
The resistor values for standard operation are selected for an input current of 16
μ
A into
the SA9605A, at the rated line current.
The values of these resistors are calculated as follows:
Phase 1:
R
8
= R
9
= (I
L1
/16
μ
A) * R
18
/2
Phase 2:
R
10
= R
11
= (I
L2
/16
μ
A) * R
19
/2
Phase 3:
R
12
= R
13
= (I
L3
/16
μ
A) * R
20
/2
Where I
LX
=
Secondary CT current at rated conditions.
R
18
, R
19
and R
20
=
Current transformer termination resistors for the three phases.
R
1
+ R
, R
and R
set the current for the phase 1 voltage sense input. R
+ R
, R
+
P
and R
set the current for phase 2 and R
+ R
, R
+ P
and R
set the current for phase
3. The values should be selected so that the input currents into the voltage sense inputs
(virtual ground) are set to 14
μ
A for rated line voltage. Capacitors C1, C2 and C3 are for
decoupling and phase compensation.
R
+ P
defines all on-chip bias and reference currents. With R
+ P
= 24k
, optimum
conditions are set. R
+ P
may be varied within ± 10% for calibration purposes. Any
changes to R
14
+ P
14
will affect the output quadratically (i.e:
R
= +5%,
f = +10%).
The formula for calculating the Output Frequency (f) is given below:
f = 11.16
* FOUTX *
*
3.5795MHz 3 * I
R
Where FOUTX
= Nominal rated frequency (1160Hz)
FOSC
= Oscillator frequency (2MHz ...... 4MHz)
I
I1
, I
I2
, I
I3
= Input currents for current inputs (16μA at rated)
I
V1
, I
V2
, I
V3
= Input currents for voltage inputs (14μA at rated)
I
R
= Reference current (typically 50μA)
FOSC
(I
I1
I
V1
) + (I
I2
I
V2
) + (I
I3
I
V3
)
2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA9605A | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9605APA | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9605ASA | 制造商:SAMES 制造商全稱:SAMES 功能描述:THREE PHASE POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT |
| SA9607M | 制造商:SAMES 制造商全稱:SAMES 功能描述:Single Phase Power/Energy Metering IC with Tamper Detection |
| SA9607P | 制造商:SAMES 制造商全稱:SAMES 功能描述:Programmable Single Phase Energy Metering IC with Tamper Detection |
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