Extech Instruments PQ3470-2 User Manual page 27

Harmonics Display Definitions:
CFA
CFV
Pk-Pk
AH/AL
VH/VL
THD
H01
H03
3.0°
V1
A1
FREQ
1200/20A
3Φ4W
800.561.8187
Harmonics - Screen 3– Voltage phase 1 – High range (VH)
Harmonics - Screen 4– Amps phase 1 – High range (AH)
Crest Factor Amps – Ratio of Peak value to RMS value
Crest Factor Voltage – Ratio of Peak value to RMS value
Peak to Peak valuie of voltage or amperage
Amps – High Range or Low range (adjust size of displayed waveform)
Volts – High range or Low range (adjust size of displayed waveform)
Total Harmonic distortion - The ratio of the sum of the powers of
all harmonic components to the power of the fundamental frequency.
st
Fundamental or 1 harmonic – should equal 100% of measured value
rd
3 harmonic – percentage is based on ratio to fundamental signal
Phase angle of the harmonic frequency
Voltage for Phase 1 is displayed
Amperage for phase 1 is displayed
Line frequency being measured
Clamp model and range setting
3 phase, 4-wire
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