MULTIRATE MICROPROCESSOR THREE-PHASE ELECTRICITY METER

• Complies with GOST R 52320-2005.
• Complies with GOST R 52322-2005.
• Complies with GOST R 52323-2005.
• Certified and listed in the Russian Federation State Register of Measurement Facilities.

• Electronic sealing.
• IR-port IrDA1.0 and optical interface.
• Load control relay.
• Low energy consumption.
• Power and consumption limits deviation alarm.
• EIA485, EIA232 interfaces.
• Data and program memory protection against unauthorized changes.
• Resistance to environmental, mechanic and electromagnetic influence.

• Minimum time to failure - 160000 hours.
• Average service life - 30 years.
• Calibration interval - 16 years.
• Warranty period – 4 years.

• consumed active and reactive electric energy separately and with progressive total under four rates at the end of the month and for 13 previous months;
• active and reactive power graphs averaged in a set time interval (30 minutes) for not less than 60 days; active and reactive power value averaged in the last three-minute interval;
• consumed active and reactive electric energy with progressive total separately and in total under four rates at the end of the day and for 45 previous days;
• current rate and energy direction (import, export);
• maximum value of active and reactive power averaged in a 30-minute interval for the current and 12 previous months under four rates.

• phase voltage and current RMS values;
• active power;

• meter serial number;
• current time and date;
• "summer" time switch (with the "summer" and "winter" time switch months setting);
• up to 12 season beginning dates;
• up to 12 daily rating graph zones and up to 36 rating graphs;
• up to 32 exceptional days (days when rating is different and is set by the customer);
• current ant voltage transformation ratios;
• power and consumption limits with excess interest for each rate alarm.

• Clock rate adjustment possibility ±30 sec/day once a day. Inbuilt clock accuracy 0.5 s/day.
• Data storage for not less than 10 years in case of external supply voltage absence.
• Fixation of 20 last clock adjustments, rate zones time reset and metrological characteristics reprogramming.
• Fixation of 100 last phase voltage failures and accepted phase voltage value spillover.
• Data display on LCD with set periodicity (T=5 sec) or browsing with the help of control elements (button) on the front panel.
• Load control with RCD (or external switching device) on dispatch operator command with shutdown mode indication.
• Power and consumption limits deviation alarm, fixation of maximum power value for each rate during the month (averaging interval – 30 minutes) and spillover control for issue of instruction for external alarm relay operation.
• Protection against external influence:
  • in the presence of dc component;
  • in case of alternating magnetic field influence;
  • in case of constant 200mT magnetic field influence;
  • in case of current direction change in phases (meter input/output).
• Power supply from both phase (1 phase) and phase-to-phase (zero wire disconnection) voltage.
• Automated calibration and verification of all measured and metered parameters with the help of digital interfaces.
• Data and program memory protection against unauthorized changes made with buttons or via interface (two passwords for two access levels, access protection (button or another device), electronic sealing with fixation in the event log).