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   Multitariff meters

MAYAK 302ARTN

PURPOSE

Energy meters are designed for accounting of active and reactive energy in three- and four-wire AC networks with the rated frequency of 50 Hz.
Energy meters may be used both in standalone mode and as part of automated measuring and information systems for electric power fiscal accounting (AMIS EPFA).

TECHNICAL FEATURES

  • Design variant with the split architecture consists of two blocks:
    • energy meter block in outdoor mounted housing with the IP55 ingress protection rating;
    • remote terminal in casing intended for DIN-rail mounting.
  • Readings are taken from the remote terminal LCD.
  • Communication between energy meter and remote terminal is effected via a 868 MHz radio interface.
  • Non-volatile RAM
  • Rate card structure - 8 rates, 8 day types, rate plan:
    • - for 8 day types and 12 months (a separate one for each weekday of a month with due account for holidays);
    • - flat rate for the whole of the year per 8 day types;
    • - flat rate for the whole of the year per single day.
  • Capability to set up to 32 exceptional days.
  • Built-in microcontroller.
  • Remote terminal backlit liquid crystal display (LCD).
  • Communication interfaces - optical port, PLC, RF 2400 MHz, GSM (GPRS/CSD, 3G/CSD).
  • Two pulsed (remote control system) outputs.
  • Current transformers are used as current sensors.
  • Precise built-in real-time clock (min. accuracy 0.4 s/day).
  • Two electronic seals (for determination of terminal box cover and energy meter housing cover opening time).
  • Load control function (built-in three-phase relay with status control or signal).

FUNCTIONAL CAPABILITIES

Energy meters provide the capability to record, store and read out the following values using an interface:

  • running total of active and reactive energy of the forward and reverse direction measured according to rates available from the date of manufacture;
  • active and reactive energy of the forward and reverse direction measured at the beginning of each month according to rates available over a three-year period;
  • active and reactive energy of the forward and reverse direction measured at the beginning of each day according to rates available over a 125-day period;
  • active and reactive energy of the forward and reverse direction measured for each half-hour over a 125-day period;
  • minimum and maximum values of line-to-ground voltage measured for each day over a 125-day period;
  • energy meter event log;
  • energy quality indices logs.

Energy meters provide the capability to write rate card, current time, weekday, date, month, year, energy and power limits.
Energy meters maintain the event log, where time of occurrence and time of completion of the following events are being recorded:

  • de-energizing and re-energizing;
  • load break switch tripping and its cause;
  • load activation;
  • rate card reprogramming;
  • change of maximum power value in case of limiting energy consumption;
  • maximum power value at the moment of tripping command generation;
  • status data on malfunctions and errors in operation of energy meter main components;
  • date and time of terminal box cover opening and resealing;
  • date and time of energy meter housing opening and resealing;
  • date and time prior to and upon the time adjustment;
  • date and time of energy quality indices deviations.

Energy meter load control is effected via a built-in relay or signal which is triggered or sent:

  • on an external command;
  • when the preset limits of power network parameters are exceeded;
  • when the energy consumption limit is exceeded;
  • when there is an unauthorized access attempt.

Load tripping delay is assigned by using the software tools available.
Energy meters provide the capability to reprogram bit rate, password and address through a communication interface.
Liquid crystal display ensures cyclic representation of the following data:

  • accumulated active and reactive energy of the forward and reverse direction according to rates available and on an aggregate basis;
  • accumulated active and reactive energy in modulus irrespective of direction according to rates available and on an aggregate basis;
  • date and time;
  • effective voltage value for each of three phases;
  • effective current value for each of three phases;
  • frequency;
  • current temperature value (for reference only);
  • current active power value of the forward and reverse direction for each of three phases and on an aggregate basis;
  • current reactive power value of the forward and reverse direction for each of three phases and on an aggregate basis;
  • current full power value of the forward and reverse direction for each of three phases and on an aggregate basis;
  • cos φ (for reference only);
  • tg φ (for reference only);
  • effective rate;
  • built-in battery status;
  • built-in modems status;
  • load control relay status.

SPECIFICATIONS

Parameter designation

Value

Accuracy rating for measuring of:
   active energy
   reactive energy


1
1

Rated voltage, V

3 ? (120 - 230) / (208 - 400)

Preset operating voltage range, V

0.9 to 1.1 Urated

Extended operating voltage range, V

0.8 to 1.15 Urated

Maximum operating voltage range, V

0 to 1.15 Urated

Base (maximum) current (Ib / Imax), A

5 (100)

Rated frequency, Hz

50

Limits of acceptable line-to-ground voltage measurement error, %:

0.9

Limits of acceptable phase current measurement error, %:
   for direct-connect energy meters:

 

   within the range of Ib to Imax           
   within the range of 0.01 Ib to Ib    

5
[5 + 0.2 (Ib/Ix - 1)]

Limits of acceptable network frequency measurement error within the operating range of 47.5 to 52.5 Hz, %  

0.15

Starting current (sensitivity) at the time of active (reactive) energy measurement, A, max:


0.02

Energy meter constant, imp/kWh [(imp/kVArh)]:
   in basic mode (A)
   in calibration mode (A)


500
16000

Power consumption, VA (W), max:  
- for voltage circuit
- for current circuit
Terminal power consumption, VA (W), max


9 (1.9)
0.1
1.3 (1.8)

Serial port baud rate (bit rate), baud (bit/s)

9600

Preset operating temperature range, ˚C
for outdoor mounted energy meters
for the terminal


-40 to +70
-10 to +55

Number of rates

8

Clock accuracy, s/day, min

0.4

No-power data retention time, years, min

16

Mean time between failures, hours, min

220000

Mean lifetime, years, min

30

Weight, kg, max:
   of the energy meter
   of the terminal


1.9
0.3

Dimensions, mm, max:
   of the outdoor mounted energy meters
   of the terminal


198 x 256 x 122
108 x 115 x 67.5

DESIGN VARIANTS

Designation for energy meters

Interface type

Load control

Current, A
Ib (Imax)

MAYAK 302ARTN.132T.2IOR2B

Optical port, radio channel
2400 MHz

signal

5 (100)

MAYAK 302ARTN.132T.2IOR1B

Optical port, radio channel
2400 MHz

relay

5 (100)

MAYAK 302ARTN.132T.2IOZH2B

Optical port, GSM

signal

5 (100)

MAYAK 302ARTN.132T.2IOZH1B

Optical port, GSM

relay

5 (100)

MAYAK 302ARTN.132T.2IOS2B

Optical port, PLC-modem (power mains)

signal

5 (100)

MAYAK 302ARTN.132T.2IOS1B

Optical port, PLC-modem (power mains)

relay

5 (100)

 

New products

Time-schedule of workshops

Copyright

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