Huawei DDSU666-H User Manual page 7

DDSU666-H Smart Power Sensor
User Manual
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Personnel Requirements
Only certified electricians are allowed to install, connect cables for, maintain, troubleshoot,
and replace the DDSU666-H.
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Protect Labels
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Installation
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Electrical Connections
Before connecting cables, ensure that the DDSU666-H is not damaged in any way. Otherwise,
electric shocks or fire may occur.
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Issue 01 (2018-05-18)
Operation in extreme environments which are not covered in this document
The DDSU666-H operates beyond specified ranges.
Unauthorized modifications to the product or software code or removal of the product
Device damage due to force majeure (such as lightning, fire, and storm)
The warranty expires and the warranty service is not extended
Installation or use in environments which are not specified in related international
standards
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 specifications 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).
Do not scrawl or damage any warning labels on the DDSU666-H because these labels
contain important information about safe operation.
Do not scrawl or damage the nameplate on the back of the DDSU666-H because it
contains important product information.
Ensure that the DDSU666-H is not connected to a power supply or powered on before
finishing installation.
To allow proper heat dissipation and installation, maintain appropriate clearances
between the DDSU666-H and other objects.
Ensure that all electrical connections comply with local electrical standards.
Ensure that the cables used in a grid-tied PV system are properly connected and insulated
and meet all specification requirements.
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Copyright © Huawei Technologies Co., Ltd.
1 Safety Precautions
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