Security Features; Data Retention; Phase Present/Phase Fail Indication - Elster A1100 Operating & Maintenance Instructions

Anti-creep
The Wh anti-creep threshold is set at manufacture to a value suitable for the number of elements in the
meter. The Test Indicator LED is continuously illuminated when the meter's anti-creep lock is
operating.
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SECURITY FEATURES

Table 1 below shows security features for each meter type:
Table 1
Phase A Present (at time of reading)
Phase B Present (at time of reading)
Phase C Present (at time of reading)
Reverse Event Count
Reverse Run Energy Reading
Reverse Alarm
Power Fail Count
Phase Fail Count
Elapsed Hours Rate 1
Elapsed Hours Rate 2
Elapsed Hours Cumulative Display
Meter Error
Watchdog Reset Count
* Details of how the data is displayed are given in Section 12.3.
11.1

Data Retention

Registration and configuration data is saved to non-volatile memory every time the power to the meter
fails, every 2 hours and also on a rate change. The data is recovered when power is restored to the
meter.
All data is retained for the nominal life of the meter.
11.2

Phase Present/Phase Fail Indication

Phase indication has the following manufacturing options:
Phase indicator 'on' if phase is present (default) or 'off' if a phase is present
Phase threshold (default 80% of nominal phase value)
LCD Register Meter - The meter has three chevrons that give visible indication that phase A,
phase B and phase C are present.
Stepper Register Meter - The meter has three LED's that give visible indication that phase A,
phase B and phase C are present.
Note: The 'B' phase indication is not shown on 3phase 3wire meters.
Security Features
Event
Operating & Maintenance Instructions
LCD Meter
LCD* IrDA/ LED
Serial
Stepper Meter
IrDA/
Serial
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