Sofar solar CHINT DDSU666 Series Quick Installation Manual

Single-Phase Meter Quick Installation Guide

1. Introduction

Meter has two type: direct connection type and CT connection type, below are the basic information of
these two type meters:
Type Model
Transformer
DDSU666
Connection
Direct
DDSU666
Connection

2. Installation

Both type type can be mounted on DIN35 standard rails, below are wiring connection instruction.
AC wire cable, OD not less than 4mm
RS485 Communication Interface, Baud rate can set to 1200, 2400, 4800, and 9600. One communication circuit can maximum
connected to 32 devices, each device must set to different communication address. Communication cable use Shielded Twisted Pair Cable,
Copper OD should not less than 0.5mm
maximum distance is 1200 meters. Connection instruction as below:
Note: Different inverter has different positive and negative RS485 port, please read the User Manuel carefully when doing the
connection.
(1)
Connection with Current Transformer
Reference
Appearance
2.
2 , communication cable should keep away from strong cables or other strong electric fields,
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1
Frequency
Voltage
230V 50Hz/60Hz
230V 50Hz/60Hz
Nominal Transformer
Current Ratio
*/100mA 2000:1
5(80)A /