Calculations
(continued)
Description
Abbreviation
Wiring Configuration
Formula
Units
Precision
Total Voltage
Harmonic
Distortion Root
Sum of Squares
(RSS)
HVthdrss-a
All
=
Per 61000-4-7
%
+/- 5%
HVthdrss-b
HVthdrss-c
HVthdrss-d
HVthdrss-ab
HVthdrss-bc
HVthdrss-ca
Total Voltage Inter
Harmonic
Distortion Root
Sum of Squares
(RSS)
HVtidrss-a
All
=
HigI is Voltage Inter-
harmonic Group
Per 61000-4-7
%
+/- 5%
HVtidrss-b
HVtidrss-c
HVtidrss-d
HVtidrss-ab
HVtidrss-bc
HVtidrss-ca
Total Odd Voltage
Harmonic
Distortion
Normalized to the
fundamental
HVohd-a
All
=
*100
Per 61000-4-7
%
+/- 5%
HVohd-b
HVohd-c
HVohd-d
HVohd-ab
HVohd-bc
HVohd-ca
Total Even
Voltage Harmonic
Distortion
Normalized to the
fundamental
HVehd-a
All
=
*100
Per 61000-4-7
%
+/- 5%
HVehd-b
HVehd-c
HVehd-d
HVehd-ab
HVehd-bc
HVehd-ca
Total Current Odd
Harmonic
Distortion
Normalized to the
fundamental
HIohd-a
All
=
*100
Per 61000-4-7
%
+/- 5%
HIohd-b
HIohd-c
HIohd-d
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