Three phase four wire intelligent energy meter

1 Product Introduction

DTZ1352Three phase four wire intelligent energy meterIt is mainly used for measuring three-phase four wire active and reactive power in low-voltage networks, and can also measure operating parameters such as voltage, current, power, and demand. It has infrared communication function, which is convenient for users to monitor, collect and manage electricity consumption. It can be flexibly installed in the distribution box to achieve sub item energy measurement, statistics, and analysis for different areas and loads. The product complies with national standards such as GB/T17215.321-2021 "Special Requirements for Electrical Measuring Equipment Part 21: Static Active Energy Meters (Class A, B, C, D, and E)", GB/T15284-2002 "Special Requirements for Multi Rate Energy Meters", and Q/GDW10827-2020 "Technical Specification for Three phase Intelligent Energy Meters", as well as enterprise standards of State Grid Corporation of China. The communication protocol complies with DL/T698.45-2017, DL/T645-2007 standards, and MODBUS-RTU protocol.

2 Principle Composition

Adopting high-quality, high-precision, high-sensitivity, high stability, wide range, low-power dedicated metering chips.

The voltage sampling circuit adopts resistance voltage division method.

The current sampling circuit adopts high-quality, high-precision, high stability, and wide range transformers.

The display adopts an LCD monitor with wide viewing angle, high contrast, UV protection, and reliable performance.

Apply digital processing technology and SMT process. Firm structure, flame retardant, anti-aging and good sealing performance.

The case structure size is unified, simple, beautiful and exquisite, and easy to install.

3 Main Technical Parameters

4 Three phase four wire intelligent energy meterBasic functions

Electricity metering:

a) It has the functions of forward, reverse phase separation, and combined active electrical energy, and can be used to set the combined active electrical energy accordingly;

b) It has a four quadrant reactive energy metering function and is equipped with two types of combined reactive energy;

c) Equipped with time-sharing metering function; Accumulate and store the total electrical energy separately from the electrical energy of each time period and phase;

d) Electric energy supports storage and transmission with 4 decimal places.

Quantity measurement:

a) Measure bidirectional demand, segmented demand, and their occurrence dates and times within a one month time interval, and store data with time stamps; b) The maximum demand measurement adopts the slip method, and the demand cycle can be selected from 5 minutes, 10 minutes, 15 minutes, 30 minutes, and 60 minutes; The slip time can be selected from 1 minute, 2 minutes, 3 minutes, and 5 minutes; The demand cycle should be an integer multiple of 5 times the slip time. Factory default values: demand cycle of 15 minutes, slip time of 1 minute;

c) Continuous measurement of total demand; The measurement of demand for each rate period shall be conducted within the complete measurement cycle of the corresponding rate period;

d) When voltage lines are energized, reset, clock adjusted, time period switched, demand cycle changed, power flow direction switched, etc. occur, the energy meter measures the demand according to the demand cycle from the current time; After completing a demand cycle, start recording the demand according to the slip interval; Not keeping records of demand during incomplete demand cycles;

e) Capable of storing the total forward and reverse demand data for 12 settlement days, as well as the demand data for each rate

5. Outline and Installation Dimensional Diagram

External dimensions (mm): 290 × 170 × 85, installation dimensions (mm): 290 × 170.