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Clamp Meter
Safety Information
9
Table 1. Symbols (cont.)
Symbol Meaning Symbol Meaning
CAT II
Measurement Category II is
applicable to test and measuring
circuits connected directly to
utilization points (socket outlets
and similar points) of the low-
voltage MAINS installation.
CAT III
IEC Measurement Category III
CAT III equipment has protection
against transients in equipment in
fixed-equipment installations, such as
distribution panels, feeders and short
branch circuits, and lighting systems in
large buildings.
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