DDZX1000 single-phase dual meter dual control campus intelligent energy meter is a new generation of energy metering product developed and produced by our company. It has independent modulated infrared optical port and RS485 communication port, with intelligent malignant load recognition capability, overvoltage protection, load limitation and other functions.It can be widely used in the measurement of single-phase AC power in cities, rural areas, schools, factories, and enterprises.It can greatly improve the rationality, practicality, and visibility of the electricity management department, reduce management workload, enhance control capabilities, and lower the management difficulty of the management department.

Product reference standards:

GB/T17215.321-2008 "Special Requirements for AC Measuring Equipment Part 21: Static Active Energy Meters (Class 1 and Class 2)"

GB/T17215.301-2007 "Special Requirements for Multifunctional Energy Meters"

DL/T 698—1999《Technical conditions for centralized meter reading system for low-voltage power users》

DL/T645-2007 "Communication Protocol for Multifunctional Energy Meters"

DL/T645-1997 "Communication Protocol for Multifunctional Energy Meters"

Working principle

The product is sent to a dedicated energy metering chip after high-precision sampling of the measured AC voltage and current. After a series of digital processing, it is converted into a digital signal proportional to the active power and sent to the microprocessor. The microprocessor accumulates and calculates the digital signal to obtain the total power, and saves the result to the data memory. The microprocessor simultaneously completes the functions of display and communication with the outside world, and its schematic diagram is shown in Figure 1.

FEATURES

1. Adopting advanced application specific integrated circuits and SMT, hot air reflow soldering, and wave soldering processes for design and manufacturing, the quality is reliable.

2. Designed with a wide voltage range, the meter can operate normally from 176V to 264V, improving its adaptability to the working environment.

3. The microprocessor adopts a built-in watchdog design to ensure the reliable and normal operation of the CPU, and multiple backups are used for measurement data. Under severe interference, data remains safe and sound.

4. Fully sealed, dust-proof and waterproof design. The case material has excellent flame retardancy, corrosion resistance and aging resistance.

Main specifications

Note: Special constants can be customized according to requirements.

Main technical parameters