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參數(shù)資料
| 型號： | SA9605A |
| 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)： | 8/14頁 |
| 文件大?。?/td> | 107K |
| 代理商： | SA9605A |
SA9605A
sames
8/14
The frequencies shown in the above table were chosen to allow a 4 - 3 - 2 scaling ratio
for rated conditions. This facility provides ease of interface with applications which use
the same post divider with mechanical counter or unchanged microcontroller software
for different current rated kWh meters.
For example, a meter manufacturer may wish to build meters for 3 system configurations
with rated current loading of 80A
RMS
, 60A
RMS
and 40A
RMS
. The rated line voltage is
230V
RMS
.
FOUT1 Frequency
Consider the case where FOUT1 is the output of the energy counting block. For each
of the three rated conditions, the input current sensing resistors are chosen to ensure that
16μA
RMS
flows into the current sensing pins.
Case 1
I
L
= 80A
RMS
1 pulse on FOUT1 = 80 * 230 * 3 = 47.6Ws
1160
I
L
= 60A
RMS
1 pulse on F 1160
I
L
= 40A
RMS
1 pulse on F 1160
Case 2
Case 3
The amount of energy represented by one pulse for each of the three cases is different.
In addition to changing the current sensing resistor network, the energy counting block
must also be altered.
FOUT2 Frequency
Now consider the advantage of the user selectable frequency available on FOUT2.
Again the input current sensing resistors must be chosen to ensure that 16μA
RMS
flows
into the current sensing pins.
Case 1
I
= 80A
, PGM1 = 0 PGM0 = 0
1 pulse on F 5.11
I
= 60A
, PGM1 = 0 PGM0 = 1
1 pulse on F 3.83
I
= 40A
PGM1 = 1 PGM0 = 0
1 pulse on F 2.55
Case 2
Case 3
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| 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 |
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