Installation Guide

Energy Meter
User Manual
DTSU666
Please read this manual carefully before use.
DTSU666 Metercanachieveenergymanagement together
with solaxthree phase inverter.It applies to 80A system on
below, measure the import, export and total power and energy.
Introduction
Danger of high voltage!
Danger to life due to high voltage of this machine!
Notes and Safety
Cut off all power of inverter before installation!
Wait for 5 minutes after power off.
1
Basic features
LOAD
PV array
Solax inverter
Energy Meter
Electrical grid
DTSU666
INV
Terminals andDimension
2
1,3,4,6,7,9,10
Threephaseinput port
24,25
RS485 port
Only authorized personnel is allowed to set
the connection.
Installation
1
Mounting
www.solaxpower.com
614.00343.00
01 02
03
DTSU666 meter is designed for indoor installation ,It could
be installated on the wall or other place indoor.
Wiring diagram
2
Threephasefourwire:directconnect
B
C
N
1 3 4 6
A
cable size: ≥10AWG or ≤6mm²
A B
RS485
24 25
7 9 10
3
WiringConnection
Step 1: RS485 terminal connection
04
*
*
*
1.Prepare a communication cable.
2.Trip the insulation from the communication cable.
3.Connect the meter communication cable and
inverter with reference to the inverter manual.
4.Connect the other end of the communication
cable to the port 24 and 25 of meter. See the gure
below for the connection.
Please note that the same color communication
cable is used for the same communication port
identier between the inverter and the meter.
PS:Thecolorofthecommunicationcableinthe
figureisforreferenceonly.Pleaserefertothe
actualsituationforthespecificconnection.