Hioki PR8111, Instruction Manual

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Safety Information
4
Symbols for Various Standards
Indicates that the product conforms to regulations set out by the EU Directive.
WEEE marking:
This symbol indicates that the electrical and electronic appliance is put on the EU market af-
ter August 13, 2005, and producers of the Member States are required to display it on the
appliance under Article 11.2 of Directive 2002/96/EC (WEEE).
Other Symbols
Indicates the prohibited action.
(p. ) Indicates the location of reference information.
*
Indicates that descriptive information is provided below.
SET
(boldface)
Text displayed on the instrument is shown in boldface in the manual.
Measurement categories
This instrument complies with CAT II safety requirements.
To ensure safe operation of measurement instruments, IEC 61010 establishes safety standards for various electrical
environments, categorized as CAT II to CAT IV, and called measurement categories.
CAT II: Primary electrical circuits in equipment connected to an
AC electrical outlet by a power cord (portable tools,
household appliances, etc.)
CAT II covers directly measuring electrical outlet recep-
tacles.
CAT III: Primary electrical circuits of heavy equipment (fixed
installations) connected directly to the distribution panel,
and feeders from the distribution panel to outlets.
CAT IV: The circuit from the service drop to the service entrance,
and to the power meter and primary overcurrent
protection device (distribution panel).
Using a measurement instrument in an environment designated with a higher-numbered category than that for which
the instrument is rated could result in a severe accident, and must be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement applications could result in
a severe accident, and must be carefully avoided.