Personal Safety
●
If there is a probability of personal injury or equipment damage during
operations on the equipment, immediately stop the operations, report the
case to the supervisor, and take feasible protective measures.
●
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits
to telecommunication network voltage (TNV) circuits.
●
Do not power on the equipment before it is installed or confirmed by
professionals.
Symbol Conventions
To ensure personal and equipment safety, observe all the safety instructions
marked on the equipment when installing, operating, and maintaining the
equipment.
Symbol
Description
Indicates a part exposed to high voltage. This symbol
warns operators that both direct and indirect contact with
the power grid is fatal. Such areas include hazardous
voltage points or protective power supply covers that may
be removed during maintenance.
Warns users of overheating. This symbol is attached to a
device surface that may overheat and cause scalding. It
warns users not to touch the surface during operations or
maintenance. Users should wear heat insulation gloves
before operations to prevent scalding.
or
Indicates protection earthing. This symbol is attached next
to a protection ground terminal next to grounded
equipment and an external ground system. An equipment
ground cable is connected to an external ground bar
through the protection ground terminal.
Indicates equipotential bonding. This symbol is found with
equipotential terminals inside equipment.
Indicates electrostatic discharge (ESD). This symbol is used
in all electrostatic sensitive areas. Before operating
equipment in these areas, wear ESD gloves or an ESD
wrist strap.
Indicates that the equipment is safe to use at altitudes
below 2000 m (6561.6 ft.).
Indicates that the equipment is not safe to use in tropical
climates.
ETP4860-B1A2 Embedded Power
User Manual
1 Safety Precautions
Issue 04 (2021-01-05)
Copyright © Huawei Technologies Co., Ltd.
4
