libra-3k electronic polyphase meter handbook - ABE Technologies
libra-3k electronic polyphase meter handbook - ABE Technologies
libra-3k electronic polyphase meter handbook - ABE Technologies
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OKRW2.702.303SS, Libra-3K Poly-phase Meter Handbook v1.0<br />
1.3.1.7 Battery<br />
TODO: Add Battery discription here.<br />
1.3.1.8 Pulses output LED<br />
The Libra <strong>meter</strong> is equipped a IR that is used to kWh pulse output.<br />
1.3.1.9 Seal Key<br />
This key is used to clear the demand and energy. It will be sealed after the action.<br />
1.3.1.10 Time Keeping Battery<br />
A standard 3.6V, half-size AA, lithium battery maintains the <strong>meter</strong> clock when the<br />
<strong>meter</strong> is programmed as a time-of-use <strong>meter</strong> or demand <strong>meter</strong> with Load Profile<br />
recorder.<br />
Since all billing and programming information is stored in nonvolatile memory, the<br />
battery is primarily used for maintaining date and time information during a power<br />
outage.<br />
Under normal conditions, the battery can provide more than 1 year of service<br />
during outage conditions (time on battery backup) and more than 10 years of<br />
service during storage conditions (disconnected from terminals) or when properly<br />
installed in an energized <strong>meter</strong>.<br />
1.3.1.11 Option boards<br />
The basic <strong>meter</strong> provides connections, signals, and power for one or two other<br />
snap in option boards. One is a communications board, either 2400 baud<br />
telephone modem or RS-232 or 485 communications interface board. The second<br />
is a pulse Input/Output interface board. It is available as either a Simple I/O or<br />
Multiple I/O version.<br />
OPERATING INSTRUCTIONS 14 / 35
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