Power - Fluke 1738 User Manual

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Users Manual
Auto Correct is not available if the algorithm is not able to detect a
better phase map or when no errors are detected.
It is not possible to detect all incorrect hook-ups automatically.
You must verify the suggested modifications carefully before
you apply the digital correction. Applications with single-
phase energy generation can deliver the wrong results when
you apply the Auto Correct feature.
In three-phase systems, the algorithm creates a sequence with a
clockwise phase rotation.
Correct Digitally
Push  (Show Menu) and select Correct Digitally to access the
connection correction screen. This screen allows you to virtually swap
phases and invert the current inputs instead of a manual correction.
Phasor
The Phasor screen shows the phase relation between voltages and
currents in a vector diagram. Additional numerical values are RMS
and fundamental phase voltages, currents, and phase angles.
1. Push  (Show Menu) and select Phasor to access this
screen.
The reference channel with 0° is the voltage phase A/L1 in
Energy studies and the current channel A/L1 in Load studies.
2. Push  (Absolute Angles) to display the current phase
angles with their values in the three phase system.
3. Push  (Relative Angles) again to toggle the display and
show the current phase angles relative to the corresponding
voltage.
34
Note

Power

 – In the Power mode you can get the values and a live trend
chart for each phase (A, B, C or L1, L2, L3) and total as:
•
Active Power (P) in W
•
Apparent Power (S) in VA
•
Non-active Power (D) in var
•
Power Factor (PF)
Use  (Fundamental/RMS) to toggle between full bandwidth
power values and power of the fundamental.
In the fundamental power screen you see these values:
•
Fundamental Active Power (P
•
Fundamental Apparent Power (S
•
Fundamental Reactive Power (Q
•
Displacement Power Factor (DPF) / cosϕ
Push  (Show Menu) to open a list of simplified Power screens
that show all phases and total of one parameter, all parameters of one
phase, or total.
+) in W
fund
) in VA
fund
) in var
fund