Measurement Categories - Hioki FT6380 Manual De Instrucciones

6
Safety Information

Measurement categories

This instrument complies with CAT IV safety requirements.
To ensure safe operation of measurement instruments IEC
61010 establishes safety standards for various electrical envi-
ronments, categorized as CAT II to CAT IV, and called measure-
ment categories.
Primary electrical circuits in equipment connected
to an AC electrical outlet by a power cord (portable
CAT II tools, household appliances, etc.)
CAT II covers directly measuring electrical outlet
receptacles.
Primary electrical circuits of heavy equipment
(fixed installations) connected directly to the distri-
CAT III
bution panel, and feeders from the distribution
panel to outlets.
The circuit from the service drop to the service
CAT IV 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 instru-
ment 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.