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Unitariff meters
 PSCH-3À.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 "kW·h" testifies measurement of active energy .
TECHNICAL SPECIFICATIONS OF ELECTRIC POWER METER
|
Value description |
Value |
Rated voltage, V |
3õ230/400 or 3õ57.7/100 |
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 |
îò 0 to 1.15 Urated |
Base (Ib)/maximum (Imax.) current for electric power meters of direct connection, À
Rated (Irated)/maximum(Imax.) current for electric power meters of transformer connection, À |
5/7.5 or 10/100
5/60 |
Frequency rated value, Hz |
50 |
Preoscillation current (sensitivity) during measurement of active/reactive energy, À, max., for electric power meters:
Ib (Imax.) - 5(60) À, accuracy class 1/2
Ib (Imax.) - 10(100) À, accuracy class 1/2
Irated (Imax.) - 5(7.5) À, accuracy class 1/2
Irated (Imax.) - 5(7.5) À, accuracy class 0,5S/1 |
0.02
0.04
0.01
0.005
|
Power consumption, V·À (W), max: |
in voltage circuit |
2 (1.5) |
in current circuit |
0.1 |
Operating temperature range, oÑ |
-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 |
171õ110õ67 |
ELECTRIC POWER METER VERSIONS
Electric power meter version designation |
Accuracy class |
Transfer ratio in basic mode (in calibration mode), pulse/kW·h (pulse/kvar∙h) |
Indicator type |
Communication interface |
Urated= 3õ230/400 V, Ib ( Imax. )- 5 (60) À
(of direct connection) |
PSCH-3À.07D.122 |
1 |
500 (10000) |
LCD |
optoport |
PSCH-3À.07D.302 |
1 |
800 |
ID |
- |
Urated= 3õ230/400 V, Ib ( Imax. )- 10 (100) À
(of direct connection) |
PSCH-3À.07ÄD122.1 |
1 |
500 (10000) |
LCD |
optoport |
PSCH-3À.07D.302.1 |
1 |
800 |
ID |
- |
Urated= 3õ230/400 V, Ib ( Imax. )- 5 (7.5) À
(of electric power meters, connected via current transformers ) |
PSCH-3À.07ÄD122.2 |
1 |
5000 (100000) |
LCD |
optoport |
PSCH-3À.07D.122.4 |
0.5S/1 |
5000 (100000) |
LCD |
optoport |
PSCH3À.07D.302.2 |
1 |
8000 |
ID |
- |
PSCH-3À.07D.302.4 |
0.5S |
8000 |
ID |
- |
Urated =3õ57.7/100V, Irated ( Imax. )=5(7.5) À
(of electric power meters, connected via current and voltage transformer ) |
PSCH-3À.07D.122.3 |
0.5S |
5000 (100000) |
LCD |
optoport |
PSCH-3À.07ÄD302.3 |
0.5S |
8000 |
ID |
- |
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Copyright Copyright © 2012
Nizhny Novgorod Factory named after M.V. Frunze.
All rights reserved.
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