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Safety
This symbol adjacent to another symbol, terminal or
operating device indicates that the operator must refer to an
explanation in the Instruction Manual to avoid personal injury
or damage to the meter.
Indicates a potentially hazardous situation, which if not
WARNING
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation, which if not
CAUTION
avoided, may result damage to the product.
The terminal(s) so marked must not be connected to a circuit
point for which the voltage with respect to ground exceeds
(in this case) 1000 VAC or VDC.
This symbol adjacent to one or more terminals identifies them
as being associated with ranges that may, in normal use, be
subject to particularly hazardous voltages. For maximum
safety, the meter and its test leads should not be handled when
these terminals are energized.
Indicates that a instrument is protected throughout by double
insulation or reinforced insulation.
IEC1010 Overvoltage Installation Category
Overvoltage Category I is equipment for connection to circuits for which
measures are taken. Examples include protected electronic circuits.
Overvoltage Category II is energy-consuming equipment to be supplied
from the fixed installation. Examples include household, office, and
laboratory appliances.
Overvoltage Category III is equipment in fixed installations.
Examples include switches in the fixed installation and some equipment
for industrial use with permanent connection to the fixed installation.
Overvoltage Category IV is for use at the origin of the installation.
Examples include electricity meters and primary over-current protection
equipment.
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