Modbus Register Map
75
PEM330-333_D00004_01_M_XXEN/08.2015
8.5
Total harmonic distortion (THD) and k-factor
Total harmonic distortion (THD): The value of the THD returned is 10,000 times
the actual value.
Example: If the register contains a value of 1031, it means 1031/10.000 =
0.1031 or 10.31 %
k-factor: The value of the k-factor that is returned is ten times the actual meas-
ured value.
Tab. 8.7: Harmonic and k-factor measurements
Register Property
Description
Format Factor
40703
RO
k-factor
I
1
UINT16
×10
40704
RO
k-factor
I
2
UINT16
×10
40705
RO
k-factor
I
3
UINT16
×10
40706…40717
Reserved
40718
RO
THD
U
L1
UINT16
×10000
40719
RO
THD
U
L2
UINT16
×10000
40720
RO
THD
U
L3
UINT16
×10000
40721
RO
THD
I
1
UINT16
×10000
40722
RO
THD
I
2
UINT16
×10000
40723
RO
THD
I
3
UINT16
×10000