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   Unitariff meters

PSCH-3.07D

PURPOSE AND SCOPE OF APPLICATION
    Meters are designed for accounting of active and reactive energy in three-wire and four-wire alternating current mains with a frequency of 50 Hz.
    Electric power meters may be used independently or as a part of automated information and measuring systems of electric power control and metering (AEPCM).

REGULATORY GROUNDWORK
IEC 62052-11:2003

TECHNICAL FEATURES OF ELECTRIC POWER METER

  • Communication interface optical port.
  • Rate of exchange via optoport - to 9600 baud.
  • Non-volatile memory.
  • Daily self-testing of program memory.
  • Display type liquid-crystal display or display device.
  • Light-emitting diode indication of active consumption.
  • Current transformer or shunt circuit are used as sensors.
  • One pulsed output.
  • Possibility of direct connection or transformer current connection or current and voltage connection.

FUNCTIONAL CAPABILITIES OF ELECTRIC POWER METER

       Electric power meters provide measurement, recording and holding in nonvolatile memory and also interface reading of the following:

  • values of measured active energy by accrued total from the date of manufacture according to all tariffs;
  • values of instantaneous load power.

    Electric power meters may provide reading and reprogramming via communication interface of the following parameters:

  • power limit;
  • indication mode and indication period within the range from 6 to 60 seconds.

    In case of threefold entering of invalid password for recording, electric power meter interlocks recording channel for 24 hours of normal job.
    Electric power meters provide display of the following: 

  • active energy consumption;
  • current active power in each phase and cumulative value;
  • voltage and current in each phase;
  • monthly electric power consumption.

    Flashing of light-emitting diode indicator "kWh"  testifies measurement of active energy .

TECHNICAL SPECIFICATIONS OF ELECTRIC POWER METER

Value description

Value

Rated voltage, V

3230/400 or 357.7/100

Specified operating voltage range, V

0.9 to 1.1 Urated

Extended operating voltage range, V

0.8 to 1.15 Urated

Extreme operating voltage range, V

0 to 1.15 Urated

Base (Ib)/maximum (Imax.) current for electric power meters of direct connection,
Rated (Irated)/maximum(Imax.) current for electric power meters of transformer connection,

5/7.5 or 10/100
5/60

Frequency rated value, Hz

50

Preoscillation current (sensitivity) during measurement of active/reactive energy, , max., for electric power meters:
Ib (Imax.) - 5(60) , accuracy class 1/2
Ib (Imax.) - 10(100) , accuracy class 1/2
Irated (Imax.) - 5(7.5) , accuracy class 1/2
Irated (Imax.) - 5(7.5) , accuracy class 0,5S/1


0.02
0.04
0.01
0.005

Power consumption, V (W), max:

    in voltage circuit

2 (1.5)

    in current circuit

0.1

Operating temperature range, o

-40 to +60

Number of tariffs

1

Rate of information exchange via optical port, bit/s

9600

Time of information preservation on power-off, years

10

Calibration interval, years

10

Electric power meter guarantee period, months

36

Mean time between failures, h

88000

Average electric power meter service life, years

30

Electric power meter weight, kg

1.0

Electric power meter dimensions, mm

17111067

ELECTRIC POWER METER VERSIONS


Electric power meter version designation

Accuracy class

Transfer ratio in basic mode (in calibration mode), pulse/kWh (pulse/kvar∙h)

Indicator type

Communication interface

Urated= 3230/400 V, Ib ( Imax. )- 5 (60)
(of direct connection)

PSCH-3.07D.122

1

500 (10000)

LCD

optoport

PSCH-3.07D.302

1

800

ID

-

Urated= 3230/400 V, Ib ( Imax. )- 10 (100)
(of direct connection)

PSCH-3.07D122.1

1

500 (10000)

LCD

optoport

PSCH-3.07D.302.1

1

800

ID

-

Urated= 3230/400 V, Ib ( Imax. )- 5 (7.5)
(of electric power meters, connected via current transformers )

PSCH-3.07D122.2

1

5000 (100000)

LCD

optoport

PSCH-3.07D.122.4

0.5S/1

5000 (100000)

LCD

optoport

PSCH3.07D.302.2

1

8000

ID

-

PSCH-3.07D.302.4

0.5S

8000

ID

-

Urated =357.7/100V, Irated ( Imax. )=5(7.5)
(of electric power meters, connected via current and voltage transformer )

PSCH-3.07D.122.3

0.5S

5000 (100000)

LCD

optoport

PSCH-3.07D302.3

0.5S

8000

ID

-

 

New products

Time-schedule of workshops

Copyright

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