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   Multitariff meters

PSCH-3TA.08

DESIGNATION AND AREA OF APPLICATION

The meter is intended for accounting of active 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.

The meter can be used independently or as a part of automated informational and measurement electric power monitoring and accounting systems (AIMEPMAS) with an option of automatic power consumption monitoring. Electric power meters allow to cut the load from mains supply in consumed power control mode in case it exceeds the pre-set power limit, in cutting mode independently on the consumed power. Electric power meters have installed electronic seal for registration of terminal cover opening time.

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.
  • Option for connection of external 9 V back-up power source for readout in case of loss of 230 V.
  • Communication interface - RS-485.
  • Half-hour profile of active energy and power (storage period is 2 months).
  • Optional setting of power limit with a controlling function in case of established limit exceeding.

ELECTRIC POWER METER FUNCTIONAL CAPABILITIES

Meters provide measurement, registration and storage in nonvolatile memory of:

  • values of accounted electric energy as progressive total, from the moment of manufacturing for all tariffs;
  • values of accounted electric energy at the beginning of each month for all tariffs with storage period of 24 months;
  • values of accounted electric energy and maximum power for each half an hour during two months.
  • dates of the last time correction;
  • values of accounted active energy as progressive total with excess of power limit for all tariffs;
  • time and date for power supply switching on/off (32 events);
  • time and date for channel opening/closing for recording (32 events);
  • time and date before and after correction (32 events);
  • time and date for terminal block cover opening and closing (32 events);
  • values for instantaneous load power.

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

  • exchange speed;
  • 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 signals according to various programmable criteria and allows to start/cut load by means of a built-in relay.
   Meters keep four-channel power profile with integration time of 30 minutes for active energy and maximum active power.

Pulse output functions in electric power meters that can be configured by means of a SW for:

  • generation of telemetry or calibration pulses,
  • generation of control signal for clock accuracy (channel 0).

   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 of holidays;
  • 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 provides cyclical displaying of the following parameters:

  • actual electric energy value for each tariff;
  • total value for accumulated electric energy;
  • current time;
  • current date;
  • 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

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, A

5 (60) or 5 (100)

Accuracy class

1

Mains frequency, Hz

502.5

Starting current (sensitivity), A

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

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)

Data exchange rate, bit/sec.

1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200

Range of operating temperatures, oC

-40 to +60

Mean time between failures, h

220000

Recalibration interval, years

10

Meter average lifetime, years

30

Meter weight, kg

maximum 1.75

Overall dimensions, mm

31017073

 

New products

Time-schedule of workshops

Copyright

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