|
Electricity Meters
 SEÎ-1.14
PURPOSE
Electric power meters are designed for accounting of active alternating current energy with frequency 50 Hz in double-wire circuits.
Power consumption is displayed at electromechanical indicating device (ID), protected from electromagnetic effect. Availability of telemetering output allows to use electric power meters in the composition of automated consumed electric energy data acquisition systems
TECHNICAL FEATURES OF ELECTRIC POWER METER
- Electric power meters have two current measuring devices- in phase and zero connection lines, that provides energy accounting in case of current availability in one or two lines, moreover accounting is carried out in the line, where consumption is greater.
- Electromechanical indicating device presents quantity of consumption power in kW·h with accuracy to tenth.
- Indicating devices (ID) with limit stop from reverse travel and protection from electromagnetic effect, exceeding requirements, presented in GOST 30207-94 are used in electric power meters.
- LED indication of current availability in load circuit, in this case LED extinction rate is proportional to level of energy consumption.
- Electric power meters are equipped with conductively-uncoupled from network pulsed output, providing transmission of information about energy consumption via two-wire communication line into remote data acquisition system.
TECHNICAL SPECIFICATIONS OF ELECTRIC POWER METER
|
Value description |
Value |
Rated voltage (Urated), V |
230 |
Rated (maximum) current value,À |
5 (50) |
Accuracy class |
1.0 or 2.0 |
Network frequency, Hz |
50±2,5 |
Network frequency working range, Hz |
47.5 to 52.5 |
Sensitivity À:
for electric power meters of accuracy class 1.0
for electric power meters of accuracy class 2.0 |
0.0125
0.025
|
Transmission ratio, pulse/kW·h |
6400 or 4000 |
Gross power, consumed by series circuit of electric power meter
under rated current, V·À |
0.1 |
Power, consumed by voltage current of electric power meter under rated voltage:
gross, V·À
active, W |
7
1
|
Specified extreme operating temperature range, °Ñ |
–40 to +55 |
Calibration interval, years |
16 |
Average service life to overlength of communication line, years |
30 |
Electric power meter dimensions, mm |
179õ14õ65 |
Electric power meter weight, kg |
maximum 0.65 |
|
