TESTBOY 150 Bedienungsanleitung Seite 20

Operation
When using the Tester, if tip does not glow, voltage could still be
present. The Tester indicates active voltage in the presence of elec-
trostatic fields of sufficient strength generated from the source
(MAINS) voltage. If the field strength is low, the Tester may not pro-
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, especially in an in-
dustrial 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 volt-
age test is always required.
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Testboy 150