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7.1 Harmonic Measurement Function
Types of Harmonic Measurement Functions
7-4
The data (numeric data) of harmonic measurement functions is measured or computed
*
from the sampled data
described later in "Measurement Period."
* See the description of the sampled data in "Types of Measurement Functions during Normal
Measurement" of chapter 2 in the User's Manual IM WT3001E-01EN.
• Types of Harmonic Measurement Functions
• Harmonic Measurement Functions for Each Input Element
The following 26 types of harmonic measurement functions are available. For
details related to the determination of measurement function data, see section 7.11.
Measurement function
Voltage
Current
Active power
Apparent power
Reactive power
Power factor
Phase difference
Phase difference with respect to U(1)
Phase difference with respect to I(1)
Impedance of the load circuit
Series resistance of the load circuit
Series reactance of the load circuit
Parallel resistance of the load circuit
Parallel reactance of the load circuit
Voltage harmonic distortion factor
Current harmonic distortion factor
Active power harmonic distortion factor
Total harmonic distortion of voltage
Total harmonic distortion of current
Total harmonic distortion of active power
Voltage telephone harmonic factor
Current telephone harmonic factor
Voltage telephone influence factor
Current telephone influence factor
Harmonic voltage factor
Harmonic current factor
• The meaning of measurement functions with parentheses varies depending on
the characters or numbers that are inside the parentheses as follows:
• dc: Indicates numeric data of the DC component.
• 1: Indicates numeric data of the fundamental wave.
• k: Indicates numeric data from 2
limit of the measured order (see section 7.6). The upper limit is determined
automatically (maximum is 100) by the frequency of the PLL source.
• Uhdf to hcf are measurement functions that indicate characteristics specific to
the harmonics. For details on the determination of the measurement functions,
see section 7.11.
*1 Cannot be measured with the harmonic measurement in normal measurement mode.
*2 Cannot be measured in IEC harmonic measurement mode.
Characters or Numbers
in Parentheses
dc
1
U( )
Yes
Yes
I( )
Yes
Yes
P( )
Yes
Yes
S( )
Yes
Yes
Q( )
Always 0
Yes
λ( )
Yes
Yes
φ( )
No
Yes
φU( )
No
No
φI( )
No
No
Z( )
*2
Yes
Yes
Rs( )
*2
Yes
Yes
*2
Xs( )
Yes
Yes
*2
Rp( )
Yes
Yes
Xp( )
*2
Yes
Yes
Uhdf( )
Yes
Yes
Ihdf( )
Yes
Yes
Phdf( )
Yes
Yes
Uthd
No
No
Ithd
No
No
Pthd
No
No
Uthf
No
No
Ithf
No
No
Utif
No
No
Itif
No
No
hvf
No
No
hcf
No
No
Yes: Numeric data available, No: No numeric data available
nd
th
to N
order harmonics. N is the upper
Total
(No ( ))
k
*1
Yes
Yes
*1
Yes
Yes
*1
Yes
Yes
*1
Yes
Yes
*1
Yes
Yes
*1
Yes
Yes
*1
Yes
Yes
No
Yes
Yes
No
*2
*2
Yes
No
*2
*2
Yes
No
*2
*2
Yes
No
*2
*2
No
Yes
*2
*2
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
Yes
No
Yes
*2
No
Yes
*2
No
Yes
*2
Yes
No
*2
No
Yes
*2
No
Yes
*2
No
Yes
IM WT3001E-51EN
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