43
44
8.5
Total current harmonics for fundamental wave distortion rate
It will measure and display effective value of total harmonics of single-phase current to
fundamental wave distortion rate, harmonic order and corresponding orders of harmonic current
under the mode.
Measurement steps: As shown in Figure 24, please press HARM key to enter into measurement
mode of total current harmonics for full wave distortion rate firstly after bootstrap. Please loosen
binding clip and clamp them into current loop cables of measured phase and loosen and
guarantee excellent closing of binding clip. As shown in Figure 26, user can press SELECT key
to select No. of any measurement port to display current harmonic order (with auxiliary display
in left lower corner), total current harmonics to full wave distortion rate (with auxiliary display in
lower right corner) and effective value for harmonic current (with main display in the middle) on
LCD respectively.
Figure 26
User can press
key to increase harmonic order or press
key to reduce harmonic order. It
also will display effective value of various current harmonic components.
8.6 Current
Harmonics
It will measure and display effective value of total harmonics of single-phase current to
fundamental wave distortion rate, harmonic order and corresponding orders of harmonic
current under the mode.
Measurement steps: As shown in Figure 24, please press HARM key to enter into measurement
mode of total current harmonics for full wave distortion rate firstly after bootstrap. Please loosen
binding clip and clamp them into current loop cables of measured phase and loosen and
guarantee excellent closing of binding clip. As shown in Figure 27, user can press SELECT key
to select No. of any measurement port to display current harmonic order (with auxiliary display
in left lower corner), effective value of harmonic current (with main display in the middle) and
percentage of effective value of current harmonic component to fundamental wave (with auxiliary
display in right lower corner) on LCD respectively.
Figure 27
User can press
key to increase harmonic order or press
key to reduce harmonic order. It
also will display effective value of various current harmonic components.
UT241/242/243 OPERATING MANUAL
UT241/242/243 OPERATING MANUAL
