Hioki PW3336-01, Instruction Manual

Page: 31 / 206

1.4 Measurement Workflow
25
3
Start measurement.
4
Stop measurement.
Activating power to the measurement lines
About measured values
• The instrument’s apparent power (S), reactive power (Q), power factor (
λ
), and phase angle (
φ
) are calcu-
lated based on the measured voltage (U), current (I), and active power (P). For the actual equations used,
see "5.5 Calculation Formulas Specifications" (p.161). Values displayed by the instrument may differ from
values displayed by measuring instruments that use different operating principles or equations.
• Display values are forcibly set to zero for voltage and current when the input is less than 0.5% of the mea-
surement range and for the voltage peak value and current peak value when the input is less than 0.3% of
the peak range (this is known as zero-suppression).
• Measured values may include an error component in measurements in which a terminal-to-ground voltage
with a high frequency is input.
• Display values may exhibit variation in applications in which the frequencies of the voltage and current
being measured differ.
• Measured values may include an error component when the instrument is used near a strong magnetic
field such as that generated by a transformer or high-current path, a strong electric field generated by a
radio or similar device, or a high-frequency magnetic field generated by a high-frequency current.
Measuring and outputting data
The instrument will display the measured values.
You can change the voltage and current range as well as display parameters during measurement.
Example:
When you wish to hold display
values (p.108)
Press .
Displaying maximum and minimum
values (p.109)
Press while holding down .
Voltage
Current
Active power
Power factor
Turning off the instrument
After disconnecting the cords from the object under measurement, turn off the instrument.
See:
"2.4 Turning On the Instrument" (p.35)