METREL MD 115 Instrucciones De Empleo página 20

Operation
vide indication of live voltages. Lack of an indication occurs if the
Tester is unable to sense the presence of voltage which may be in-
fluenced by several factors including, but not limited to:
● Shielded wire/cables
● Thickness and type of insulation
● Distance from the voltage source
● Fully-isolated users that prevent an effective ground
● Receptacles in recessed sockets/ differences in socket design
● Condition of the Tester and Batteries
Use caution with voltages above 30 V ac as a shock hazard
may exist.
FOR USE BY COMPETENT PERSONS
Anyone using this instrument should be knowledgeable and
trained about the risks involved with measuring voltage, espe-
cially in an industrial setting, and the importance of taking safety
precautions and of testing the instrument before and after using
it to ensure that it is in good working condition.
The single-pole phase testing is not appropriate to determine
whether a line is live or not. For this purpose, the double-pole
voltage test is always required.
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.
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Metrel MD 115