The DDZY2397 single-phase load identification energy meter is a smart power monitoring solution designed for apartment complexes and residential buildings. This advanced energy meter utilizes dedicated large-scale integrated circuits with digital sampling processing and SMT technology, delivering exceptional reliability, low power consumption, and extended service life.

• Dual-circuit independent measurement of positive and negative active electric energy with configurable total, main, and secondary circuit settings
• Comprehensive energy data storage for tip, peak, flat, and valley periods with 12-month historical data retention
• Real-time monitoring of voltage, current, power, power factor, and frequency parameters
• Advanced load control with current/power limiting, fixed power time limits, and sudden change power protection
• Dual-rate programming with flexible time period settings (minimum 15-minute intervals)
• Multiple freezing functions including instantaneous, regular, daily, and hourly data capture
• Wireless communication via LoRaWAN, NB-IoT, Cat.1, and Bluetooth for remote monitoring
• Active data upload capability with configurable transmission intervals (default: 4 hours)

The LCD screen provides comprehensive energy monitoring with full display initialization followed by alternating views of current active energy and power readings.

The main terminal wiring includes: Phase In (1), Phase Out (2), Zero In (3), Zero Out (4). Additional auxiliary terminals provide metering pulse output (9,10) and RS485 communication (11,12).

This energy meter complies with national standard GB/T17215.321-2008/2021 and features DL/T645-2007 communication protocol. Manufactured under ISO/IEC 9001 quality management system.