Huawei DTSU666-H - Installation, Operation, and Maintenance Safety

● Failure to obey the operation instructions and safety precautions in this
document.
● Operation in extreme environments which are not covered in this document.
● The DTSU666-H or DTSU666-H 250 A/50 mA operates beyond specied
ranges.
● Unauthorized modications to the product or software code or removal of the
product.
● Device damage due to force majeure (such as lightning, re, and storm).
● The warranty expires and the warranty service is not extended.
● Installation or use in environments which are not specied in related
international standards.
Personnel Requirements
Only certied electricians are allowed to install, connect cables for, maintain,
troubleshoot, and replace the DTSU666-H or DTSU666-H 250 A/50 mA.
● Operation personnel should receive professional training.
● Operation personnel should read through this document and follow all the
precautions.
● Operation personnel should be familiar with the safety specications about
the electrical system.
● Operation personnel should understand the composition and working
principles of the grid-tied PV power system and local regulations.
● Operation personnel must wear proper personal protective equipment (PPE).
Protect Labels
Do not scrawl or damage the nameplate on the back of the DTSU666-H or
DTSU666-H 250 A/50 mA because it contains important product information.
Installation
● Ensure that the DTSU666-H or DTSU666-H 250 A/50 mA is not connected to
a power supply or powered on before nishing installation.
● To allow proper heat dissipation and installation, maintain appropriate
clearances between the DTSU666-H or DTSU666-H 250 A/50 mA and other
objects.
Electrical Connections
D ANGER
Before connecting cables, ensure that the DTSU666-H or DTSU666-H 250 A/50 mA
is not damaged in any way. Otherwise, electric shocks or re may occur.
● Ensure that all electrical connections comply with local electrical standards.
DTSU666-H 100 A and 250 A Smart Power Sensor
User Manual 1 Safety Precautions
Issue 06 (2024-05-06) Copyright © Huawei Digital Power Technologies Co., Ltd. 2