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SAJ DTSU666 Quick Manual

100a/40ma three-phase double-ct meter connection

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Quick Guide

- DTSU666 100A/40mA Three-phase Double-CT Meter Connection

This quick guide describes the procedure to connect the DTSU666 100A/40mA

double CT three-phase meter to the SAJ solar inverters and the grid and to enable the

meter on the elekeeper App.

Before you start

Prepare the following cables. For cable speciﬁcations, refer to DTSU666 Quick Guide.

1. An Ethernet cable with two pins connecting to the meter on one side and an RJ45

terminal on the other end connecting to the solar inverter.

8 7 6 5 4 3 2 1

For the RJ45 terminal connecting to inverter RS485 meter ports, see inverter applicable pins:

· H2-(5K-10K)-T2, HS2-(5K-10K)-T2: pin 1 and 2

· HS3-(5K-12K)-T2: pin 1 and 2

· H2-(10K-30K)-(T2,T3): pin 7 and 8

2. L1, L2, L3, and N line AC power cables connecting from the meter to the grid.

Procedure

Step 1. Connect the RS485 communication cable from the meter to the AC-coupled

inverter according to the diagram on Page 2.

V0.1

pin 1 / 7

pin 2 / 8

Meter RS485-1

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Page 1 - DTSU666 100A/40mA Three-phase Double-CT Meter Connection This quick guide describes the procedure to connect the DTSU666 100A/40mA double CT three-phase meter to the SAJ solar inverters and the grid and to enable the meter on the elekeeper App. Before you start Prepare the following cables.
Page 2 Step 2. Clip the six current transformers (CT) at the solar inverter and the grid side, pointing all the CTs to the loads. Then connect the meter AC power cables to the grid. AC-coupled/ storage inverter Back-up load On-grid load RS485 IA1 IB1 IC1 Meter...
Page 3 Step 3. Log in to the elekeeper App and connect to the AC-coupled or hybrid inverter through Bluetooth connection. On the Device List page, select the inverter. V0.1 © Sanjing, 2025. All rights rese ed.