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1. GENERAL FEATURES
1.1. Metrology
LSM Series Active-Reactive Electric Electricity Meters can measure
and record active import energy. Voltage and current measurement,
and energy calculation is carried out by the microprocessor in the me-
ter. If energy is in reverse direction, the import meter takes its absolute
value and assumes it as positive. The import-export meter, however,
measures and stores the data of import and export energy separately.
Additionally, reactive energy can also be measured.
1.2. Software Version
Meter Software version can be readout from e-meter via OBIS code
96.97.
1.3. Tariffs
1.3.1. Main Tariffs and Tariff Intervals
LSM Series Active-Reactive Electric Electricity Meters are able to
split day time as import and export, and store measurement data
for 4 tariffs and 8 billing periods for weekdays, Saturdays and Sun-
days separately. The measured energy is added to both total tariff
(T) and the corresponding tariff (T1, T2, T3 or T4). The tariff informa-
tion can be viewed on LCD or read out using the OBIS codes from
1.8.0 to 1.8.4 (import) and from 2.8.0 to 2.8.4 (export**) in the format:
(000000.000*kWh)
1.8.0 and 2.8.0 gives the total tariff (T) information and 1.8.1,... ,1.8.4
and 2.8.1,..., 2.8.4 gives T1, T2, T3, T4 information of import energy
and export energy respectively.
At the end of each month, T, T1, T2, T3 and T4 data is automati-
cally stored in the non-volatile memory of the meter as the previous
month’s record. Last 24 months’ data is always stored in the non-vo-
latile memory automatically. The previous months’ tariff data can be
read using OBIS codes from 1.8.1*1 to 1.8.4*24 (import) and from
2.8.1*1 to 2.8.4*24 (export**). For instance, 1.8.1*1 OBIS code cor-
responds to the previous month’s Import Tariff 1 record; the last 24
month’s Import T1 parameter can be read with OBIS codes from
1.8.1*1 to 1.8.1*24.
Tariff intervals are pre-programmed as follows
Tariff 1: 06:00 - 17:00
Tariff 2: 17:00 - 22:00
Tariff 3: 22:00 - 06:00
Tariff 4: -
Automatic daylight saving is active by default. It can be disabled using
the OBIS code 96.98(10) and re-enabled with 96.98(00).
In case extra intervals or tariff changes are needed, it can only be
performed by authorized personnel using optical port interface.
1.3.2. Advanced Tariff (Optional)
LSM meters optionally have advanced tariffs structure. 8 different tariff
FK.104 (Rev.01) 19.10.2018
