Ankerui DJSF rail type dual channel metering DC energy meter

The Ankerui DJSF rail type dual channel metering DC energy meter is mainly designed for applications such as DC charging piles, telecommunications base stations, and solar photovoltaics. This series of instruments can measure voltage, current, power, and forward and reverse electrical energy in DC systems. The detection results can be used for local display and can also be connected to industrial control equipment and computers to form a measurement and control system.

1 Overview

The DJSF1352-RN rail mounted DC energy meter has dual DC inputs and is mainly designed for applications such as telecommunications base stations, DC charging stations, and solar photovoltaics. This series of instruments can measure voltage, current, power, and forward and reverse electrical energy in DC systems. The detection results can be used for local display and can also be connected to industrial control equipment and computers to form a measurement and control system.

2 Product specifications

3 Technical parameters

4 Installation Guide

4.1 Appearance and installation dimensions

4.1.1 Product Installation

Adopting standard DIN35mm rail installation

4.2 Terminals and wiring

4.3 Precautions

4.3.1 Voltage signal input

The input voltage shall not exceed the rated input voltage of the product120%, must be installed at the voltage input terminal1AFuse;

4.3.2 Current signal input

External shunt or Hall current sensor should be used for current input;

4.3.3 Terminal screw torque

The torque for tightening terminal screws shall not exceed0.5Nm（3.5Lb-In）.

4.3.4 Communication interface wiring

This instrument provides asynchronous half duplex RS485 communication interface, using MODBUS-RTU protocol, and various data information can be transmitted on the communication line. In theory, up to 128 instruments can be connected simultaneously on a single line, and each instrument can set its communication address (Addr) and communication rate (baud), which can also be selected through settings.

It is recommended to use three core shielded wires for communication connections, with each core having a cross-sectional area of not less than 0.5mm2, connected to A and B respectively, and the shielding layer grounded. When wiring, the communication wires should be kept away from strong electrical cables or other strong electric field environments.

Suggest adding matching resistors between A and B of the starting and ending instruments, with a resistance range of 20Ω～10kΩ.