PQube User Manual 2.1
Page 83 of 113
This method produces a single value of unbalance. It
is widely used in North America.
The IEC unbalance method considers both three-
phase magnitudes and the angles between the
phases. It is limited to the fundamental voltage or
current only – it does not take into account any
harmonic voltages or currents. This method produces
two values of unbalance: zero-sequence unbalance,
and negative-sequence unbalance. It is widely used
throughout the world.
The GB unbalance method is similar to the IEC
unbalance method, but includes time-averaging
features. It is used in China.
All PQube-02 have two separate ranges for the
Analog channels.
High Range full scale: 70VAC or ±100VDC
Low Range full scale: 7VAC or ±10VDC
Voltage_Harmonics=VOLTS_AND_THD
View voltage harmonics as absolute volts, or as percent of
fundamental.
VOLTS_AND_THD
PERCENT_OF_FUNDAMENTAL_AND_THD
Current_Harmonics=AMPS_AND_TDD
View current harmonics as absolute amps and TDD, or as
percent of fundamental and THD.
AMPS_AND_TDD
PERCENT_OF_FUNDAMENTAL_AND_THD
Choose between Celsius or Fahrenheit units for
Temperature. Note that all Temperature settings in the
Trend_Settings section and Modbus will always be in
Celsius.
Choose between 120V/60Hz or 230V/50Hz incandescent
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