C264/EN SA/A14 Safety & Handling
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MiCOM C264/C264C
2. HEALTH AND SAFETY
For all the safety purposes please refer to the AREVA T&D Safety Guide: SFTY/4L M/D11
(or later issue) and to the following chapters.
WARNING: THIS SAFETY SECTION SHOULD BE READ BEFORE COMMENCING
ANY WORK ON THE EQUIPMENT.
2.1 Health and Safety
The information in the Safety Section of the product documentation is intended to ensure
that products are properly installed and handled in order to maintain them in a safe condition.
It is assumed that everyone who will be associated with the equipment will be familiar with
the contents of the Safety Section.
2.2 Installing, Commissioning and Servicing
Equipment connections
Personnel undertaking installation, commissioning or servicing work on this equipment
should be aware of the correct working procedures to ensure safety. The product
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.
If there is unlocked access to the rear of the equipment, care should be taken by all
personnel to avoid electrical shock or energy hazards.
Voltage and current connections should be made using insulated crimp terminations to
ensure that terminal block insulation requirements are maintained for safety. To ensure that
wires are correctly terminated the correct crimp terminal and tool for the wire size should be
used.
Before energising the equipment it must be earthed using the protective earth terminal, or
the appropriate termination of the supply plug in the case of plug connected equipment.
Omitting or disconnecting the equipment earth may cause a safety hazard.
The recommended minimum earth wire size is 2.5 mm², unless otherwise stated in the
technical data section of the product documentation.
When the protective (earth) conductor terminal (PCT) is also used to terminate cable
screens, etc., it is essential that the integrity of the protective (earth) conductor is checked
after the addition or removal of such functional earth connections.
For M4 stud PCTs the integrity of the protective (earth) connection should be ensured by use
of a locknut or similar."
Before energising the equipment, the following should be checked:
• Voltage rating and polarity
• CT circuit rating and integrity of connections
• Integrity of earth connection (where applicable)
Note: The term earth used throughout the product documentation is the
direct equivalent of the North American term ground.
Equipment operating conditions
The equipment should be operated within the specified electrical and environmental limits.
Current transformer circuits
Do not open the secondary circuit of a live CT since the high level voltage produced may be
lethal to personnel and could damage insulation.
