Caution Signs - ABB Relion SAM600 Installation Manual

Section 2
Safety information
2.3

Caution signs

8
Dangerous voltages can occur on the connectors, even though the auxiliary
voltage has been disconnected.
Always connect the IED to protective earth, regardless of the operating
conditions. This also applies to special occasions such as bench testing,
demonstrations and off-site configuration. This is class 1 equipment that shall
be earthed.
Never remove any screw from a powered IED or from a IED connected to
powered circuitry. Potentially lethal voltages and currents are present.
Take adequate measures to protect the eyes. Never look into the laser beam.
The IED with accessories should be mounted in a cubicle in a restricted access
area within a power station, substation or industrial or retail environment.
Whenever changes are made in the IED, measures should be taken to avoid
inadvertent tripping.
The IED contains components which are sensitive to electrostatic discharge.
ESD precautions shall always be observed prior to touching components.
Always transport PCBs (modules) using certified conductive bags.
Do not connect live wires to the IED. Internal circuitry may be damaged
Always use a conductive wrist strap connected to protective earth when
replacing modules. Electrostatic discharge (ESD) may damage the module and
IED circuitry.
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Switchgear control unit SAM600-IO
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