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Single-phase prepaid power meter
Single-phase prepaid electronic power meters 3CA-1
 Electronic single-phase power meters 3CA-1 measure active electric power in two-wire circuits, also indicating maximum demand, time, tariff zones, tamper and outages information, and service data. Options include load management features, communication devices, and tamper sensors: case/ terminal open, reverse and neutral phase' current.
3CA-1 meters are equipped with disconnection relay and smart card slot for operation in prepaid and automatic post-paid mode. Refer to brochure for details.
Alternatively to the smart card, 3CA-1 meters come with two-way PLC for remote disconnection and load management.
 Downloads technical description3CA-1
Accuracy class |
1 |
Voltage |
110-120, 220-240V +/-30% |
Rated (maximum) current |
5 (25) A, 5 (50) A, 10 (100) A, 20 (100) A |
Tariffs |
4 tariffs, hourly intervals, 4 seasons , weekends and unlimited holidays, daylight savings time |
Operating temperature |
-20…+60C |
Power loss |
below 2W |
Frequency |
50 Hz +/-5% |
Current sensor resistance |
0.0005 Ohm |
Clock accuracy |
Better than 0.5sec daily |
Self-test |
Optical port, RS-485, PLC, LCD, memory, clock, circuits |
Optical port transmission speed |
300…9600 bps |
Transmission RS-485, PLC speed |
9600 baud, 19200 baud |
Data security |
Password, hardware security, encryption |
Standard warranty |
3 years |
Extended warranty |
8 years |
Recalibration period |
16 years |
Lifetime |
30 years |
Case |
IP 54 |
Meter overall dimensions |
170 х 120 х 80 mm |
Overall dimensions including packing |
202 х 146 х 100 mm |
Meter weight |
Below 1 kg |
The terminals of updating 
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