Filter
Top Products
Display Screen
21
Table 3. Screen Abbreviations
Screen Usage Name and Description
° Phase Angle degrees. (± 180°)
Measures time from the positive zero crossing of the
fundamental of the selected volts or amp
REF. 360°
represents one cycle at the fundamental or selected
harmonic frequency. A positive sign indicates that the
positive zero crossing of the measured cycle comes
earlier than (leads) that of the reference.
Note
For the Watts
screen, the phase angle always shows the
relation of Amps to the Volts
REF at the same frequency. Cos
φ
calculations are based on this definition.
A RMS Amps RMS (includes dc component if using dc capable
current probe).
A PK Peak Amps (1/2 peak-to-peak value).
A DC Amps DC.
A HM For a current waveform, A HM identifies the total
harmonic current present.
A LEAD Amps Lead Volts
Evidence of capacitive reactance in the system; the
current waveform precedes the voltage waveform.
A LAG Amps Lag Volts
Evidence of inductive reactance in the system; the
current waveform occurs after the voltage waveform.
CF Crest Factor
Ratio of a waveform’s peak value to its rms value.