MAX
WARNING
This
WARNING
symbol indicates a potentially hazardous
situation, which if not avoided, could result in death or
serious injury.
CAUTION
This
CAUTION
symbol indicates a potentially hazardous
situation, which if not avoided, may result in damage to
the product.
This symbol advises the user that the terminal(s) so
marked must not be connected to a circuit point at which
the voltage with respect to earth ground exceeds (in this
case) 1000 VAC or VDC.
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Note:
Examples include protected electronic circuits.
Equipment of
OVERVOLTAGE CATEGORY
I
is equipment for connection
to circuits in which measures are taken to limit the transient overvoltages to
an appropriate low level.
OVERVOLTAGE CATEGORY II
Note:
Examples include household, office, and laboratory appliances.
Equipment of
OVERVOLTAGE CATEGORY II
is energy-consuming
equipment to be supplied from the fixed installation.
OVERVOLTAGE CATEGORY III
Note:
Examples include switches in a fixed installation and some
equipment for industrial use with a permanent connection to the
fixed installation.
Equipment of
OVERVOLTAGE CATEGORY III
is equipment in
fixed installations.
OVERVOLTAGE CATEGORY IV
Note
: Examples include electricity meters and primary over-current
protection equipment
Equipment of
OVERVOLTAGE CATEGORY IV
is for use at the origin
of the installation.
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