Measurement Category
Measurement Category
DS1000Z series digital oscilloscopes can make measurements in
Measurement Category I.
WARNING
This oscilloscope can only be used for measurements within its
specified measurement categories.
Measurement Category Definitions
Measurement category I is for measurements performed on circuits not
directly connected to MAINS. Examples are measurements on circuits not
derived from MAINS, and specially protected (internal) MAINS derived circuits.
In the latter case, transient stresses are variable; for that reason, the
transient withstand capability of the equipment is made known to the user.
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 overcurrent protection devices and ripple control
units.
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