THREE-PHASE MULTIRATE MICROPROCESSOR MULTI-PURPOSE METER

• Meters meet the requirements GOST R 52320-2005, GOST R 52322-2005 (for accuracy classes 1 and 2), GOST R 52323-2005 (for accuracy class 0.2S and 0.5S) as related to active energy measurement and GOST R 52425-2005 as related to reactive energy measurement.
• Certified and listed in the Russian and the CIS State Register of Measurement Facilities.

• Measurement accuracy technological allowance.
• Energy and power metering high validity in case of power network defects in quality (load voltage and current asymmetry and nonsinusoidality); the meter provides valid metering up to the 45th network harmonic.
• Real losses in electric main (W=I2Rt) metering.
• Registration of all the facts of terminal block deliddiing and meter decapsulation in the meter non-volatile memory – «electronic sealing».
• Battery replacement without meter decapsulation.
• Automatic self-diagnosis with result listing.
• Tamper/Theft protection.
• Resistance to environmental, mechanical and electromagnetic influence.

• Mean time to first failure - 160000 hours.
• Verification interval - 16 years.
• Average service life - 30 years.
• Warranty period - 4 years.

• Electric energy metering under four tariffs in accordance with rate schedules and seasonal programs (number of seasonal programs - up to 12, number of exceptional dates - up to 32, number of rate zones - up to 12, number of rate schedules - up to 36).

• The meter provides metering of:
  • active and reactive energy import/export with progressive total under four tariffs and per tariff;
  • active and reactive energy import/export in the general register, if rate schedules are absent or improperly set by the customer;
  • active and reactive energy import/export with progressive total for each month. Storage period - 24 months;
  • active and reactive energy import/export with progressive total for each day. Storage period - 45 days;
  • monthly power maximum values under four tariffs (and in the general register). Storage period - 24 months;
  • averaged in a set time interval active and reactive power graphs in each direction of energy metering (for 30 min averaging interval storage period is 128 days);
  • power waste in current circuits with progressive total for each direction of metering, taking into account transformation ratio.
• The meter provides measurement and indication of:
  • active, reactive and apparent power per phase and in total;
  • phase voltage RMS values in voltage circuits per phase;
  • current RMS values in current circuits per phase;
  • phase-angles between basic phase voltage and current harmonics;
  • phase-angles between basic phase voltage harmonics;
  • active and reactive power factors per phase (with nonspecified accuracy);
  • power frequency.
• The meter provides setting the following basic parameters (via interface):
  • administrator's parameters: - administrator's password (up to 6 symbols);
    - eight customer's interface access passwords (up to 6 symbols);
    
  • customer's parameters: - current date and time of clock rate day correction value;
    - "summer"/"winter" time switch, with the switch months setting ("summer" time switch is carried out at 2 a.m., and "winter" time - at 3 a.m. on the set months last Sunday);
    - up to 12 season beginning dates;
    - up to 12 day rate schedule zones;
    - up to 36 rate schedules;
    - up to 32 exceptional days (days when tariffication is different and is set by the customer);
    - rate schedules for each day of the week;
    - current and voltage transformation ratios;
    - power averaging interval;
    - identifier (up to 16 symbols);
    - data exchange speed of operation and interface activity time;
    - settings for phase voltage control;
    - power transmission line resistance per phase (for power waste calculation);
    
  • parameters set while customization: - nominal current and voltage meter type;
    - quartz-crystal resonator calibration factor;
    - current scaling factor;
    - voltage scaling factor;
    - phase error calibration factors.
    
• The meter provides manual clock rate adjustment - up to ±30 sec.
• Data and program memory protection against unauthorized access (password and sealed button).
• In case of authorized access, the meter provides setting all the energy parameters to zero.
• Keeping customer settings within no less than 16 years, and clock operation and calendaring within no less than 10 years in case of external supply voltage absence.
• Fixation of last 100 customer parameter corrections and meter metrological characteristics reprogramming with reprogrammable parameter group fixation.
• Fixation of last 100 phase voltage changes with parameter change behavior fixation, fixation of last 100 meter condition changes, 65536 meter electronic seal responses and 65536 terminal block electronic seal responses.
• The meter has a test output unit – the main transmitting unit for each energy direction (the configuration of these outputs is programmed).
• The meter examines measuring device, clock, program memory, data, current source and indicates information on errors and failures in meter units operation on LCD and via interface.
• Data exchange with external data processing devices is realized via optical port and EIA485 or EIA232 interfaces.li>
• Data exchange via optical port and interface complies with GOST R IEC 61107-2001.
• Simultaneous data exchange via optical port and one of the interfaces is impossible.
• In case of external supply voltage absence and applied back-up supply voltage the meter operates in the indication mode and provides data exchange with external data processing and transmitting devices via optical port and one of the interfaces EIA485, EIA232, IRPS.