GEM

GEM (Multifunctional)

Single-phase static electricity meter GEM is developed for residential applications and is approved according to IEC 62052-11 and IEC 62053-21. GEM is sophisticated, multi-tariff meter with extended functionality. Meter can be provided with various optional features - including maximum demand measurement, possibility to connect meter to AMR system, extended anti-tamper capability, relay output - to fulfill requirements for the most demanding customer.

Features:

Measuring

Meter operates in single-phase electricity networks and independently from current flow direction measure:
  • Active energy with accuracy class 1 or 2 (IEC 62053-21);
  • Instantaneous power;
  • [Optional] Maximum Demand with programmable integration periods 15, 30, 60 min;
  • [Optional] Measurement in two channels (in phase and neutral lines).

Tariff module

Multifunctional GEM meter has internal real-time clock with Li-ion battery or Super-cap backup and complex tariff structure (Time-Of-Use):
  • Number of energy tariffs
    		• Up to 4 tariffs;
  • Number of seasons
    		• Up to 12 tariff seasons;
  • Number of week profiles
    		• Up to 10-week profiles;
  • Number of day profiles
    		• Up to 15-day profiles;
  • Special days
    		• Up to 365 days;
  • [Optional] Number of
        maximum demand tariffs
    		• Up to 4 tariffs.

    Data storage

    GEM meter has non-volatile memory, which allows to store metering data without influence of power outages. Capacity of stored data:
  • Total energy  
    		•  from installation date;
  • Monthly energy
    		• last 16 months;
  • Events logbook records
    		• up to 10 records of each event type;
  • [Optional] Monthly maximum demand
    		• last 16 months.

    Communications

    Meter has optical communication interface in accordance with IEC 62056-21. Optical communication interface allows the user to read data and program meter in the field or in the workshop.
    [Optional] GEM meter can have electrical communication interface (20 mA current loop or RS485) with protocol in accordance with IEC 62056-21 or IEC 62056-31, allowing connection of meters to AMR system through external GSM/GPRS, RF, PSTN, and LAN controllers.

    Outputs

  • Electric pulse output (S0)
  • LED test output for active energy
  • [Optional] Relay, normally open contacts are connected:
    • When specified energy tariff is valid;
    • For two programmed periods during the 24-hour interval (periods are set in 15 minutes step).

    • Security features

    Hardware protection allows only authorized persons to access meter:
  • Two seals on main cover;
  • One seal on terminal cover;
  • [Optional] optical communication interface sealing.
    • Software protection allows only authorized persons to program meter with software for meter programming and data reading:
  • Meters programming is protected by password; if incorrect password is entered four times in a day, the communication interfaces will be locked for 24 hours. During that period communication is impossible.
    • Meter with internal clock has Events logbook, registering the following events:
  • Power outages  
    		•  last 10 events with date & time;
  • Meter programming
    		• last 10 events with date & time;
  • Magnetic field influence
    		• last event with date & time;
  • [Optional] main cover openings
    		• last event with date & time;
  • [Optional] terminal cover openings
    		• last event with date & time.

    Display

    GEM meter is equipped with LCD (Liquid crystal display). LCD contains 8 digits with programmable decimal point: 8-5 for whole numbers and 0-3 digits for decimal numbers. LCD displays majority of data accumulated in meter and parameterization constants. Features:
  • Cyclic (automatic) and static (manual) data scroll;
  • Data indication on LCD during power outages;
  • Reverse current flow indication;
  • Li-ion battery (Super-cap) status indication;
  • Menu control by pushbutton or [optional] light signals.

    • Technical Specification:

    Ratings

    		 
    System Single-Phase 2-wire
    Accuracy class Class 1.0 or Class 2.0
    Reference voltage, Un 100V; 120V; 127V; 220V; 230V;
    special on request
    Reference (maximum) current, Ib (Imax) 5(60) A; 5(85) A; 10(60) A; 10(100) A
    Current threshold 0,4% Ib
    Reference Frequency, Hz 50 or 60
    Meter constant, imp/kWh 2000 or 4000
    Power consumption:
    In voltage circuit
    In current circuit
    < 0,75W; < 1 VA
    < 0,05 VA
    Temperature ranges:
    Meter operating
    Meter storage
    -40°C to +60°C
    -50°C to +70°C

    Internal real-time clock

    		 
    Accuracy < 0,5 s/24 h (T = 23 °C)
    Backup power supply Li-ion battery or Super Cap (rechargeable)
    Operation duration using only backup:
    Li-ion battery
    Super Cap
    > 16 years
    > 7 days

    Case & Dimensions

    		 
    Case UV stabilized polycarbonate
    Insulation Protective class II
    Dimensions, mm 230 x 132 x 59
    Weight, kg 0,95

    Downloads:
    Product brochure

    More information about the meter available to download can be found here
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