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Users Manual
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THD Voltage includes a traffic light indicator:
•
green: <2 %
•
yellow: 2 % to 8 %
•
red: >8 %
Note
A Voltage THD of >8 % exceeds the limits of Power Quality
standards. A detailed analysis of the harmonics with a power
quality analyzer is recommended when the THD shows a
yellow or red indicator.
Measurement Configuration
Use the Change Configuration touch button to access the
measurement configuration screen. The configuration screen allows
you to change the parameters for:
•
Study type
•
Topology
•
Nominal voltage (for load studies only)
•
Current range
•
Scale factors for external PTs or CTs
•
Nominal frequency
•
Auxiliary input configuration
Study Type
Depending on the application, select either Load Study or Energy
Study.
•
Energy Study: Select this study type when power and energy
values that include active power (W) and PF are required.
•
Load Study: For convenience, some applications require you to
measure only the current that makes the connection to the point to
measure.
Typical applications are:
•
Verify the circuit capacity before adding additional load.
•
Identify situations where the allowable load can be exceeded.
Optionally, a nominal voltage can be configured to get pseudo-
apparent power readings.
Topology (Distribution System)
Select the appropriate system. A connection diagram for the voltage
test leads and current sensors is shown on the Logger.
A diagram is also available with (Connection diagram) from the
Change Configuration menu. Examples of these diagrams are
shown on the following pages.
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