Chapter 3 Display Operations Data Display
34 Series PM172 Powermeters
• When wiring via PT is used, for the PT ratio up to and
including 4.0, voltages are displayed in volts, and
power in whole kilowatts.
• For the PT ratio above 4.0, voltages are displayed in
kilovolts, and power in megawatts with three decimal
places.
The small round “Kilo” and “Mega” LEDs light up showing the appropriate
measurement units for a displayed page.
Primary and Secondary Volts
Volts can be displayed in primary (default) or secondary units. The volts
display mode can be changed through the Display Setup menu.
Phase Power Readings
In configurations with the neutral wire, in addition to total three-phase
powers, the meter can show per-phase power readings. By default, they are
disabled. See Display Setup on how to enable per-phase power readings in
your meter.
Fundamental Component
The meter can display total power factor and active power for the
fundamental component if it is enabled through the Display Setup menu.
Whenever phase power readings are allowed, the PM172 also displays per-
phase power factor and active power for the fundamental component.
Auto Return
If no buttons are pressed for 30 seconds while the display Auto Return option
is enabled, the display automatically returns to the main screen from any
other measurement display or programming mode.
The Auto Return option can be enabled through the Display Setup menu
Auto Scroll
If no buttons are pressed for 30 seconds while in the common
measurements display, and the Auto Scroll option is enabled in the meter,
the display automatically scrolls through all available pages. The scroll
interval can be adjusted through the Display Setup menu.
To stop auto scrolling, press briefly the SCROLL button.
Navigation Buttons
In Data Display mode, the navigation buttons function as follows.
The MIN/MAX button switches to the Min/Max - Maximum Demands display
pages. When briefly pressed again, it switches back to the common
measurements display.
The THD/TDD button in the PM172P and PM172E switches to the Total
Harmonics display. The similar H/ESC button in the PM172EH switches
between different harmonic displays: Total Harmonics, Individual Harmonics,
Harmonic Powers, and Harmonic Energies. When briefly pressed once
again, it switches back to the common measurements display
The UP and DOWN arrow buttons, labeled by arrowheads, scroll forwards
and backwards through the display pages. Pressed briefly, they move one
page forward or backward. If you hold down the button, the display pages
are scrolled at rate of a twice per second.
ENERGY
ENTER
THD/TDD
ESC
S
T
MIN
MAX
SELECT
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