IC Card Prepaid Electricity Metering System with RS485 (Single-Phase Series)
BAW-1A, BAW-2A, BAW-RL, BAW-RA
Prepaid electricity metering systems of this type operate on a pay-before-use mechanism, eliminating unbilled consumption and simplifying electricity cost recovery. This single-phase IC card meter series supports four tariff modes — including TOU (Time-of-Use) pricing — with dual RS485 interfaces for seamless integration with card readers, value loaders, and back-end management platforms. Suitable for rental apartments, EV charging stations, school facilities, and other applications requiring accurate, automated electricity billing.
About the Product
The prepaid electricity meters BAW-1A and BAW-2A are single-phase electronic devices designed to work together with the IC Card Reader (BAW-RL) and the Value Loader (BAW-RA). This IC Card Prepaid Electricity Metering System operates on a pay-before-use mechanism, effectively preventing unbilled electricity consumption. Equipped with dual RS485 communication interfaces and a built-in control relay, the system can be integrated with a back-end management platform for remote credit top-up and electricity consumption monitoring. The meters support up to four tariff modes and automatically save power measurement data every 15 minutes. Widely used in rental apartments, EV charging stations, school air conditioning applications, and other use cases, the system provides accurate billing and convenient power management.
Features
- Four selectable tariff modes: single-rate, summer/non-summer two-tier rate, six-tier step rate, and TOU (Time-of-Use) rate
- Dual RS485 communication ports for connecting the IC Card Reader and management system, enabling credit top-up and remote monitoring
- Measurement and display functions for: active energy (kWh), voltage (V), current (A), frequency (Hz), active power (kW), apparent power (kVA), power factor (PF), tariff mode in use, communication status, and relay switch status
- Built-in memory stores power measurement data including instantaneous voltage, current, power, and cumulative total consumption. Data is saved automatically every 15 minutes; each record is retained for at least 14 days and can be retrieved via the RS485 interface
- Power data retention during power outages
Example Applications
- Rental apartments
- EV charging station market
- School air conditioning systems
* All units are individually verified and lead-sealed in accordance with the regulations of the Bureau of Standards, Metrology and Inspection (BSMI), Ministry of Economic Affairs, Taiwan.
Electrical Specifications
Standard | CNS 14607, IEC 62053-22 |
Accuracy Class | Class 0.5 |
Metering Display | Backlit LCD, 8-digit display |
Metering Unit | 0.01 kWh (6+2 digits) |
Operating Temperature | -20 ∼ +70℃ |
Operating Voltage Range | 0.7 ∼ 1.2 Un |
Power Consumption | Less than 5 VA (including the IC Card Reader) |
Surge Test | 6 kV 1.2/50 𝜇s |
Service Life | More than 10 years |
| Meter Constant | 1600 imp/kWh |
| Starting Current | 40 mA |
IC Card Reader (BAW-RL)
- Shares power supply with the meter; connects directly without an external power source
- RJ11 communication port for quick connection to the meter
- Numeric (0–9) and function keys for easy operation
- 2-line, 16-character backlit LCD display with Chinese/English switchable interface
- Audible alert when remaining balance is insufficient
- Wall-mount installation; can be lead-sealed
- Displays available balance, tariff rate, current month consumption, yesterday's consumption, today's consumption, and cumulative total deducted amount
Value Loader (BAW-RA)
- Activated by a management card; loads or deducts value on consumer cards
- Numeric (0–9) and function keys for easy operation
- 2-line, 16-character backlit LCD display with Chinese/English switchable interface
- Allows setting a PIN and expiration date on consumer cards
- Can modify the tariff rate stored on the tariff card (price per kWh)
- Optional value loader management software for printing receipts and top-up summary reports
Detailed Specifications
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CIC Company Profile
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