SATEC EM920 Operation Manual - Manual (Page 35)

Chapter 3 Using Front Display
Display Operations
EM920 Power Quality and Revenue Meter 35
minutes. You can temporarily set the backlight to continuous
operation if you need to work in dark for more time.
Auto-Return
If the Auto-Return feature is enabled and no button is
pressed for the programmable Auto-Return interval (1 to 30
minutes for data displays; fixed at 5 minutes for setup
menus), the display automatically returns to the default page
from any other data display or a setup menu.
If the Auto-Scroll feature is enabled, the display immediately
enters the auto scroll sequence.
Auto-Scroll
If the Auto-Scroll feature is enabled, the data display
automatically scrolls through all pages of all data displays
that are included into the programmable auto-scroll
sequence. The scroll interval is adjustable in the range of 2 to
30 seconds. The scroll sequence may include all or only
selected displays.
The display automatically enters auto scrolling if no button is
pressed for the Auto-Return interval when the Auto-Return
feature is enabled, or in 1 minute if this feature is disabled.
In the last case, the scroll sequence is restored from the
point where it was interrupted.
To stop auto scrolling, press briefly any button if the
backlight is on; else press briefly any button twice since the
first press only sets the backlight on and does not affect auto
scrolling.
Auto-Scroll is not operational in TEST mode.
Measurement Units
The following table shows the display resolution for the
common displayed quantities. All measured data is displayed
in primary units.
Measured
Quantity
Voltage
Connection
Units and Display Resolution
Energy kWh, kvarh, kVAh with one decimal
place. The number of digits is
programmable (see
Device Options and
Mode Control in Chapter 5).
Direct
(PT = 1.0)
kW, kvar, kVA with three decimal places Power
Transformer
(PT>1.0)
MW, Mvar, MVA with three decimal
places
Direct
(PT = 1.0)
Volts with one decimal place Voltage
Transformer
(PT>1.0)
Kilovolts with three decimal places
Current Amperes with two decimal places