Arbiter Systems 931A, Руководство по эксплуатации

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“ Power ” sets the Model 931A to calculate active power (watts).
Based on voltage and current measurements from the predefined
inputs, the results are compared to an active power transducer. For
three-phase configurations, the display shows total active power. See
Section 3.6.2 for a description of power measurements.
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“ Volt-Amps ” sets the Model 931A to calculate apparent power
(VA). Based on voltage and current measurements from the pre-
defined inputs, the results are compared to an apparent power
transducer. For three-phase configurations, the display shows the
total apparent power. See Section 3.6.3 for a description of apparent
power measurements.
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“ Amps ” sets the Model 931A to make current measurements on the
predefined input routed to Channel 2 and compares it to a current
transducer. Route input to measurement Channels 1 and 2 if only a
current signal is available.
If available, route synchronous voltage signal to channel 1. For
three-phase configurations, the display shows average current. See
Section 3.2.3 for a description of AC current measurements.
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“ Frequency ” sets the Model 931A to measure frequency at (prede-
fined) channel 1, for comparison to a frequency transducer. The
displayed frequency actually represents the instantaneous value,
which is updated with each measurement cycle. See Section 3.5.4
for a description of frequency measurements.
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“ Vars ” sets the Model 931A to calculate reactive power (vars) based
on voltage, current, and phase measurements from the predefined
inputs. The results are compared to a reactive power transducer.
For three-phase configurations, the display shows the total reactive
power. See Section 3.6.2 for a description of reactive power.
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“ Power Factor ” sets the Model 931A to calculate power factor
based on voltage and current from the predefined inputs. The
results are compared to a power factor transducer. For three-
phase configurations, the display shows average power factor. See
Section 3.6.3 for a description of power factor measurements.
3.8.1.3 Input Range
Select Input Range from the Transducer Configuration menu and press
the ENTER key to view the available input ranges.
The displayed
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