1-7
IM 253710-01E
Functions
1
Harmonic Measurement Mode and Measurement Function (Types of Numerical Data)
«For procedures, see section 5.1.»
The data specified by the measurement function (numerical data) in the harmonic
measurement mode are measured or computed over the specified period of the sampled
data* as described later in “Measurement/Computation Period.”
*
For information on the sampled data, see section 1.3 “Acquiring Data (Voltage and Current Signals).”
Harmonic measurement function (types of numerical data)
• Harmonic measurement function on each power measurement module
The following 28 types of numerical data can be determined. For details related to
the determination of the measurement function, see Appendix 2.
Yes
: Numerical data exist
No
: Numerical data do not
exist
dc
Yes
Yes
Yes
Yes
Always 0
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
k
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
All (No ( ))
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
U( )
I( )
P( )
S( )
Q( )
λ
( )
φ
( )
φ
U( )
φ
I( )
Z( )
Rs( )
Xs( )
Rp( )
Xp( )
Uhdf( )
Ihdf( )
Phdf( )
Uthd
Ithd
Pthd
Uthf
Ithf
Utif
Itif
hvf
hcf
fU( )
fI( )
Chars and numbers inside ( )
Measurement
Function
• Measurement functions having parentheses have the following meanings
depending on the characters or numbers that are inside the parentheses
• dc : Indicates numerical data related to the DC component.
• 1 : Indicates numerical data related to the fundamental signal.
• k : Indicates numerical data related to the 2nd to Nth order harmonics. N is the
upper limit of the harmonic order under analysis. The upper limit is determined
automatically (maximum is 500) by the frequency of the PLL source.
• All : No parentheses are appended after the measurement function. Indicates
numerical data related to all waveforms including the fundamental and the harmonics.
• Uhdf to hcf are measurement functions that indicate characteristics that are
specific to the harmonics. For details related to the determination of
measurement functions, see Appendix 2.
• Displays the frequency of the signal, fU (voltage) or fI (current), that is selected
as the PLL source. The display of the signal that is not selected is shown as [---
----] (no data).
1.2 Measurement Modes and Measurement/Computation Periods
