Deif MTR-3 - THD formulas; Energy price formula

MTR-3 Installation Instructions
DEIF A/S Page 51 of 51
THD
( )
100
I
In
%THDI
1
63
2n
2
f
⋅=
∑
=
Current THD
I
1
− value of first harmonic
n − number of harmonic
( )
100
U
Un
%THDU
1
63
2n
2
f
⋅=
∑
=
Phase voltage THD
U
1
− value of first harmonic
n − number of harmonic
( )
100
U
Un
%THDU
1
63
2n
2
ff
⋅=
∑
=
Phase-to-phase voltage THD
U
1
− value of first harmonic
n − number of harmonic
Energy
exponent price Tarif
10 Price in tariff Price ⋅=
Total exponent of tariff price and energy price
in all tariffs
DEIF A/S reserves the right to change any of the above.