Alstom MiCOM P846, Technical Manual

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P846/EN SS/H11 Safety Section
(SS) - 4
3. SYMBOLS AND LABELS ON THE EQUIPMENT
For safety reasons the following symbols which may be used on the equipment or referred to
in the equipment documentation, should be understood before it is installed or
commissioned.
SS
3.1 Symbols
Caution: refer to equipment documentation Caution: risk of electric shock
Protective Conductor (*Earth) terminal Functional/Protective Conductor (*Earth)
terminal
Note: This symbol may also be used
for a Protective Conductor (Earth)
Terminal if that terminal is part of a
terminal block or sub-assembly e.g.
power supply.
*NOTE: THE TERM EARTH USED THROUGHOUT THIS TECHNICAL
MANUAL IS THE DIRECT EQUIVALENT OF THE NORTH
AMERICAN TERM GROUND.
3.2 Labels
See Safety Guide (SFTY/4L M) for typical equipment labeling information.
4. INSTALLING, COMMISSIONING AND SERVICING
Equipment connections
Personnel undertaking installation, commissioning or servicing work for this
equipment should be aware of the correct working procedures to ensure safety.
The equipment documentation should be consulted before installing,
commissioning, or servicing the equipment.
Terminals exposed during installation, commissioning and maintenance may
present a hazardous voltage unless the equipment is electrically isolated.
The clamping screws of all terminal block connectors, for field wiring, using M4
screws shall be tightened to a nominal torque of 1.3 Nm.
Equipment intended for rack or panel mounting is for use on a flat surface of a
Type 1 enclosure, as defined by Underwriters Laboratories (UL).
Any disassembly of the equipment may expose parts at hazardous voltage, also
electronic parts may be damaged if suitable electrostatic voltage discharge (ESD)
precautions are not taken.
If there is unlocked access to the rear of the equipment, care should be taken by
all personnel to avoid electric shock or energy hazards.
Voltage and current connections shall be made using insulated crimp terminations
to ensure that terminal block insulation requirements are maintained for safety.