hello All,
one of my customer has the below queries related to MSP430F6745 & its library functions. Appriciate if anyone can help on this.
They are planning to use MSP430F6745 for their panel meter project which will works in 3Phase 4 wire,3phase 3wire and 1phase 2 wire system with accuracy class 0.2 as per IEC62053.
below are the queries ,
1) Using TI library functions we are able to calculate some parameter like Voltage ,current ,power and energy ,apart from these parameter we want to measure and calculate the parameter like Demand,THD,Neutral current etc ..Detail list mentioned in attached Annexture A-Parameter List.
can we measure and calculate the mentioned parameter simultaneously by using library function and our functions used,at the time of calculating the parameters simulteneously from library function and our functions used, is there any chances to clash the program etc.??
2) Is library functions supports for 3phase 3wire and 1phase 2 wire also??
3) How we will achieve class 0.2 as per IEC62053 using MSP430F6745 ?? Becuase the input current measurement will be done on SD24 and Input voltage measurement will be done on ADC10 .
4) We have searched on the TI website for development board but we found that the development board is available for 128-pin LQFP package and we are thinking about the 100-pin LQFP package of MSP430F6745.So is target board available for 100-pin LQFP package of MSP430F6745???
5) We think that in reference design the cummulative energy is save in External EEPROM ,Can you pl tell us the timing of energy saving means after every 1min or 40 sec or 2 min etc??
6)Is it possible to save energy count at the time of power supply fail in flash memory ??
7) Is internal reference available for ADC10 ??
8) Also find the picture of our meter current connection.The current termination is pass thru CTs (5A CTs outside the meter) , Can we able to achieve class 0.2 in this case?
Awaiting your reply,
Regards
Mandar