DDS722 Thailand Series Single-Phase Prepaid PLC Energy Meter

2.1 Dual Mode Operation

 Supports both prepaid and postpaid billing modes

 Default configuration is prepaid, with flexible mode switching available

2.2 Pluggable Modular Design

 Modular communication structure compatible with PLC, RF, GPRS, and 4G LTE

 Simplifies network upgrades and reduces operating costs

2.3 High-Security Anti-Tamper Features

 Detects reverse current, magnetic interference, cover opening, and live/neutral wire swapping

 Automatically logs tampering events for further analysis

2.4 Comprehensive Event Logging

Records up to 100 entries per event type (e.g., power outage, power restoration, overload, voltage anomalies)

2.5 Multi-Tariff Support

 Supports TOU (Time-of-Use) and block rate billing

 Up to 8 tariffs supported

 Includes "Friendly Time" feature: electricity remains available during specified periods even when the balance is insufficient

2.6 Remote Management

 Enables remote disconnection, firmware upgrades, and load control via the HES platform

 Significantly reduces on-site service and operational costs

2.7 Eco-Friendly and Durable Design

 Rated IP54 for environmental protection

 Features double insulation, shock resistance, and high-temperature durability

 Operates reliably in extreme environments with a temperature range of **-25°C to +70°C**

IEC 62053-21: Particular requirements for static AC energy meters (classes 1 and 2)

IEC 62052-11: General requirements, tests, and test conditions for metering equipment

IEC 62055-21/31/41: Standard framework and STS protocol for prepaid systems

ISO 9001: Quality Management System Certification

ISO 14001: Environmental Management System Certification