Sofar solar CHINT DDSU666 Series User Manual

Single-Phase Meter Quick Installation Guide
Copy Right©Shenzhen SOFARSOALR
1
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
Appearance
Reference
Voltage
Frequency
Nominal
Current
Transformer
Ratio
Transformer
Connection
DDSU666
230V
50Hz/60Hz
*/100mA
2000:1
Direct
Connection
DDSU666
230V
50Hz/60Hz
5(80)A
/
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
2.
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
2
, communication cable should keep away from strong cables or other strong electric fields,
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

Sofar solar CHINT DDSU666 Series Specifications

General

Brand	Sofar solar
Model	CHINT DDSU666 Series
Category	Measuring Instruments
Language	English

Summary

Introduction

Meter Types and Specifications

Details transformer connection and direct connection meter types with their specifications.

Installation

Connection with Current Transformer

Describes the wiring connection for meters using a current transformer.

Direct Connection Installation

Details the wiring connection for meters using a direct connection method.

Check Installation Result

Current Direction Verification

Verifies the correct flow of power direction for CT connection type meters.

RS485 Communication Check

Checks for alarms indicating incorrect RS485 connection and how to resolve them.

Interface

CT Connection Type Interface

Describes the meter's indicator light status for normal working conditions.

Direct Connection Type Interface

Details the interface displays and button operations for direct connection meters.

Trouble Shooting

No Display Issues

Addresses potential reasons and troubleshooting steps for a meter with no display.

RS485 Communication Abnormalities

Provides troubleshooting for RS485 communication problems like cable issues or parameter mismatches.

Parameter Display Abnormalities

Guides on analyzing data frame parsing errors and parameter mismatch issues.