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Safety Information
Measurement Category
Measurement Categories
This oscilloscope can make measurements in other circuits that are not directly
connected to mains.
WARNING
This oscilloscope can only be used for measurements within its specified
measurement categories.
Not to use the product for measurements within other measurement
categories, such as CAT II, CAT III, CAT IV.
Do not use the equipment for measurements on mains circuits.
Measurement Category Definitions
Measurement category II is for measurements performed on circuits directly
connected to the low voltage installation. Examples are measurements on
household appliances, portable tools and similar equipment.
Measurement category III is for measurements performed in the building
installation. Examples are measurements on distribution boards, circuit-breakers,
wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the
fixed installation, and equipment for industrial use and some other equipment, for
example. Stationary motors with permanent connection to the fixed installation.
Measurement category IV is for measurements performed at the source of the
low-voltage installation. Examples are electricity meters and measurements on
primary over current protection devices and ripple control units.
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