Ankerui DJSF1352 Dual DC Energy Meter Supporting Charging Station

Ankrui Geng Minhua

One Overview

　　Ankerui DJSF1352 Dual DC Energy Meter Supporting Charging StationAdopting LCD display, with RS485 function for data exchange with microcomputer. Suitable for DC metering of charging stations, battery, solar panel and other DC signal equipment for power measurement and energy metering. It can also be used for modern DC power supply and distribution systems in industrial and mining enterprises, civil buildings, building automation, etc.

　　Ankerui DJSF1352 Dual DC Energy Meter Supporting Charging StationComposed of measurement unit, data processing unit, communication unit, display unit, etc., it has functions of electric energy measurement, data processing, real-time monitoring, and LCD display. This electricity meter complies with the relevant technical requirements of GB/T33708-2017 Static DC Energy Meter, GB/T29318-2012 Electric Vehicle Off Board Charging Energy Measurement Q/GDW1825-2013 DC Energy Meter Technical Specification, and Q/GDW364-2009 Single phase Intelligent Energy Meter Technical Specification.

The DJSF1352 product has rich functions and can meet various application needs.

The main functions are as follows:

★ It has the function of measuring active energy in both forward and reverse directions, with a combined energy of forward and reverse;

★ Voltage, current, and power measurement;

★ Settlement function for the previous 12 months;

★ It has calendar, timing, and leap year automatic conversion functions, as well as timing function. The clock error issued by the broadcast shall not exceed 5 minutes, and time calibration is not allowed within ten minutes before and after midnight. Time calibration is only allowed once a day;

★ It has two sets of rate time periods, which can be automatically converted through pre-set times. Each rate time period can have at least two time zones throughout the year, and at least 8 time periods can be set within 24 hours. The minimum interval between time periods is 15 minutes, and time periods can be set across zero points;

Modulation infrared communication interface and RS-485 communication interface, using DL/T645-2007 communication protocol, DL/T698.45 communication protocol and Modbus RTU protocol. The communication rate of RS485 can be set at 1200bps, 2400bps, 4800bps, 9600bps, and the modulation infrared is fixed at 1200bps.

II Specifications and main technical parameters

2.1 Specifications

★ Accuracy level: Level 1

★ Rated voltage (Ub): 100V, 350V, 500V, 750V, 1000V, etc

★ Calibration current (In): 3000A (adjustable), shunt supports output of 0-75mV, Hall current sensor supports output of 0-20mA and 0-5V

★ Auxiliary power supply: Supply voltage, DC12V, DC20-60V, DC9-36V or AC85V-265V optional

★ Pulse constant:

2.2 Technical Parameters

2.2.1 Basic Error

At rated voltage (Ub), the basic error of the energy meter should not exceed the error limit in the table below

2.2.2 Voltage measurement range

2.2.3 Submersion

When there is no current in the current circuit of the instrument (during the test, the current circuit should be open circuit), the maximum voltage should be applied to the voltage circuit, and the instrument test output should not generate more than one pulse within the time Δ t specified in the following formula.

2.2.4 Power consumption

2.2.5 Working environment conditions

2.2.5 Working environment conditions

2.2.6 Communication Interface

2.2.7 Mechanical parameters

★ Dimensions: 160 ± 0.5mm (length) 112 ± 0.5mm (width) 58 ± 0.5mm (thickness)

★ Weight: Approximately 0.5kg