i need some help to calculate the right values for following registers:
WTHR0, WTHR1, VARTHR0, VARTHR1, VATHR0, VATHR1
i want to have an LSB of 1varh / 1Wh.
so i took the equation of the datasheet: VARTHR = (PMAX x fs x 3600 x 10^n) / (Vfs x Ifs)
1varh -> n = 0
Vfs = 196,006Vrms when ADC has 0,5Vpp
Ifs = 11,048Arms when ADC has 0,5Vpp
so i get the following values:
VARTHR = (33516139 x 8000 x 3600 x 1) / (196,006 x 11,048)
VARTHR = 0x67C8E5EA45
VARTHR0 = WTHR0 = VATHR0 = 0xE5EA45
VARTHR1 = WTHR1 = VATHR1 = 0x67C8
but when i'm measuring energy the result seems to be incorrect!
is anything wrong with my calculation?