TESTBOY Testavit Schuki 1A Bedienungsanleitung Seite 24

Operation
Definition of measurement categories:
Measurement category 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. Typical
short-circuit current is < 10kA.
Measurement category III:
Measurement category III is applicable to test and measuring
circuits connected to the distribution part of the building's low-
voltage mains installation. Typical short-circuit current is <
50kA.
Measurement category IV:
Measurement category IV is applicable to test and measuring
circuits connected at the source of the building's low-voltage
mains installation. Typical short-circuit current is >> 50kA.
Read the instruction before use. If the equipment is used in a
manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
All parts of the device and its accessories are not allowed to be
changed or replaced, other than authorized by the manufacturer
or his agent.
For cleaning the unit, use a dry cloth.
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Testavit Schuki
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1A