Super Cap
6-15
To eliminate the possibility of data loss it is best to change the battery while the meter is
running. Care must be taken as the battery is at the potential of the neutral terminal.
The battery is at the potential of the neutral terminal. If conditions (such as wiring
configuration) make this a dangerous operation then steps should be taken to ensure that
it is safe to do so. While the risk of coming into contact with the conductors during a
battery change is minimal, care must be exercised.
Super Cap
The Mk10E meter can be fitted with a Super Capacitor. The Super Cap performs the
same job as the battery described above. In the event of a power loss the Super Cap
keeps the meter’s clock running and preserves the memory contents.
The Super Cap will keep the meter running in the event of a power loss for a minimum
of 7 days. This is particularly useful in conserving battery life on a meter fitted at a site
where there are frequent, short duration outages. While the Super Caps recharge in a
short period once power is restored, they should be charged (by connecting power to the
meter) for a minimum of 12 hours to obtain the full alive time.
LCD/Select Button
The LCD is primarily for displaying information from the meter’s registers for meter
readers. It is also useful during installation, configuration, and diagnosing problems. It
has 8 seven-segment digits to display values and 7 seven-segment digits to display
description (Figure 6-17). It has arrows to indicate import and export for active and
reactive energies, indicators for phase voltage, indicators for display sets A and B,
battery indicator, connection type indicator for connection through local or remote port
and units and multipliers.
•
Figure 6-17 LCD with all segments turned on
The LCD has an optional backlight.
To progress to the next page, press the
Select
button. Each time the button is pressed the
display moves to the next page. The display may also be setup to automatically cycle
the display through the pages, pausing if the
Select
button is pressed.
The Mk10E Meter 6-15
