Huawei DTSU666-H - Page 8

● Ensure that the cables used in a grid-tied PV system are properly connected
and insulated and meet all specication requirements.
Operation
D ANGER
High voltage may cause an electric shock, which results in serious injury, death, or
serious property damage from the DTSU666-H or DTSU666-H 250 A/50 mA in
operation. Strictly comply with the safety precautions in this document and
associated documents when operating the DTSU666-H or DTSU666-H 250 A/50
mA.
● Do not touch an energized DTSU666-H or DTSU666-H 250 A/50 mA because
it may result in an electric shock.
● Follow local laws and regulations when operating the device.
Maintenance and Replacement
D ANGER
High voltage may cause an electric shock, which results in serious injury, death, or
serious property damage from the DTSU666-H or DTSU666-H 250 A/50 mA in
operation. Therefore, before maintenance, power o the DTSU666-H or DTSU666-
H 250 A/50 mA and strictly comply with the safety precautions in this document
and associated documents to operate the DTSU666-H or DTSU666-H 250 A/50
mA.
● Maintain the DTSU666-H or DTSU666-H 250 A/50 mA with sucient
knowledge of this document and proper tools and testing devices.
● Temporary warning signs or fences must be placed to prevent unauthorized
people from entering the site.
● The DTSU666-H or DTSU666-H 250 A/50 mA can be powered on only after all
faults are rectied. Failing to do so may escalate faults or damage the device.
● During the maintenance, observe ESD precautions and wear ESD gloves.
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. 3