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IM 701949-01EN
*6 The product is for measurement category "O(Other)" and measurement
category II (CAT II). Do not use it with measurement category III (CAT III), nor
measurement category IV (CAT IV). When using devices or accessories with
different measurement categories, the lower measurement category applies.
See below for definitions of measurement categories.
Measurement Category
Definition
Measurement category “O (Other)” Measurement category O (Other) applies
to measurement of a circuit that is not
connected directly to the main power source.
Measurement category II (CAT II) CAT II applies to measurement of electrical
equipment that is powered through a fixed
installation such as a wall outlet wired to a
distribution board and measurement on such
wiring.
Measurement category III (CAT III) CAT III applies to measurement at the
distribution level, that is, building wiring, fixed
installations.
Measurement category IV (CAT IV) CAT IV applies to measurement at the
primary supply level, that is, overhead lines,
cable systems.
*7 Pollution degree refers to the degree of adhesion of a solid, liquid, or gas which
deteriorates withstand voltage or surface resistivity. Pollution Degree 2 applies
to normal indoor atmospheres (with only non-conductive pollution).
5. Specifications