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   Multitariff meters

PSCH-3A.06T

DESIGNATION AND AREA OF APPLICATION

The meter is intended for accounting of active and reactive electric power in three-, four-wire AC mains with 50 Hz frequency differentiated both by the time of day and by the level of consumed electric energy and power. Power consumption is displayed at liquid crystal display (LCD) and electromechanical measuring indicator (MI) protected against electromagnetic effects.

The meter can be used independently or as a part of automated informational and measurement electric power monitoring and accounting systems (AIME PMAS) with an option of automatic power consumption monitoring.

ELECTRIC POWER METER TECHNICAL FEATURES

  • Tariff schedule for 4 tariffs (for every day of a week of each month and holidays in each month).
  • Nonvolatile memory.
  • Programmable pulse output for 6 modes.
  • Current transformer is used as current sensor.
  • Optional connection of external back-up power source, 9V.
  • Communication interface RS-485.
  • Half-hour profile of active energy and power (storage period is 2 months).
  • LED indication of valid tariff on electric power meters with a measuring indicator.
  • Optional setting of power limit with a controlling function in case of established limit exceeding.
  • Electronic seal.

ELECTRIC POWER METER FUNCTIONAL CAPABILITIES

Electric power meter provides measurement, registration and storage in nonvolatile memory of:

  • registration and storage of consumed electric power values by tariff zones;
  • registration and storage of accounted electric energy at the beginning of a month by tariff zones during 24 months;
  • registration and storage of consumed electric power values by tariff zones with excess of established power limit;
  • registration of unsealing/sealing time for terminal block protective cover and storage of 32 events;
  • time registration before and after daily time correction and storage of 32 events;
  • time registration for power off/on to meter terminals and storage of 32 events;
  • registration of accounted energy values at the beginning of the following and previous days;
  • registration of channel opening/closing for recording and storage of 32 events;
  • registration and storage of accounted electric energy and of maximum power for each half an hour during 2 months;
  • date of the last time correction;
  • registration of unsealing time for terminal block protective cover.

   The power meter allows reprogramming option via a communication interface for:

  • exchange speed via RS-485;
  • group and individual password;
  • address;
  • password for recording.

   If wrong password for recording is entered three times, the electric power meter blocks the recording channel for 24 hours.
Electric power meter generates load control signal according to various programmable criteria and allows to start/cut load by means of an external switching device.
   The electric power meter has the option of reading and reprogramming via RS-485 interface for the following parameters:

  • consumer's category;
  • current time and date;
  • schedule for exception days;
  • annual tariff schedule (for every day of a week or a holiday of a month);
  • power limit and monthly energy limit;
  • function of permission/prohibition for automatic change from the Daylight Saving Time to the Standard Time and vice versa;
  • operating modes of electric power meter pulse output; calibration, telemetry, switching on/of, power control, clock calibration;
  • indication mode and indication period within the range from 6 to 60 sec.;
  • permission for single tariff operation mode.

   Electric power meter displays the following parameters:

  • actual energy value for each tariff;
  • total value for accumulated energy;
  • current time and date;
  • actual tariff;
  • current measured power;
  • preset power limit;
  • monthly consumption for each tariff over a year;
  • tariff schedule for the current day of a week.

ELECTRIC POWER METER TECHNICAL CHARACTERISTICS

Parameter

Value

Rated voltage, V

 357.7/100;
3(120-230)/(208-400)

Established operating voltage range, V

from 0.9 to 1.1 Urated

Extended operating voltage range, V

from 0.8 to 1.15 Urated

Maximum operating voltage range, V

from 0 to 1.15 Urated

Base (maximum) current for directly connected meters, A

5 (60) or 5 (100)

Rated (maximum) current for transformer connected meters, A

5 (10)

Accuracy class

1 or 0.5 S

Rated mains frequency, Hz

502,5

Starting current (sensitivity), A

0,01; 0,02

Number of tariffs

4

Total power consumed by electric power meter's series circuit at rated current and rated frequency, VA

maximum 0.1 VA

Total (active) power consumed by each voltage path of the electric power meter at rated current value and rated frequency value, W

maximum 1.5 (0.7)

Transmission numbers of telemetry output in the basic (calibration) mode, pulse/kWh

500 (10000); 5000 (100000)

Range of operating temperatures, oC

-40 to +60

Mean time between failures, h

165000

Recalibration interval, years

12

Meter average lifetime, years

30

Meter weight, kg

maximum 1.03

Overall dimensions, mm:

24017170

 

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Time-schedule of workshops

Copyright

Copyright © 2012
Nizhny Novgorod Factory named after M.V. Frunze.
All rights reserved.
 
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