6
•
Voltage leakage down earth wires from transformer casings, due to
failing transformer insulation.
•
Patrolman work where energised high voltage conductors maybe
hazardous to personnel.
•
Ground step potentials.
Limitations:
LiveTester is a non-contact detector and as such depends on sensing an
electric field generated by an energized conductor. Electric fields are easily
modified, and in some cases completely eliminated, in certain situations by
the presence of conductors other then the energised conductor under test.
These other conductors can be either earthed or energised by another phase
in the system . Operators should be aware of these effects, and take steps to
ensure the conductor to be tested is approached in a part of the line where no
other conductors are close by. A good rule of thumb is to ensure all other
metal objects are at least twice the distance from the LiveTester, as the
distance from the LiveTester to the conductor to be tested. Also it should be
noted that an energised conductor laying on wet or dew covered or
submerged ground may still be energised, but possibly will not be detected by
a non-contact detector. The moisture dissipates the electric field. LiveTester is
not suitable for detecting armoured or shielded conductors, because the
shielding prevents any electric field from escaping.
LiveTester is not suitable for detecting conductors energised with D.C. voltage
or at frequencies other than 50 or 60 Hz. That is it would not be suitable for
400Hz aircraft systems, or D.C. railway systems.
LiveTester is not recommended for detecting buried conductors.
13. Intellectual Property
The contents of this document, LiveTester front panel artwork, printed circuit
board artwork, and firmware (programs contained in integrated circuits) are
subject to copyright and can not be reproduced, transmitted in any language
or computer language, in any form or any means, electronic, mechanical,
optical, chemical, manual, or otherwise, without prior written consent from
StarLogixs Pty. Ltd.
The Electric Field Detection System in the LiveTester is protected by
international patents. The Static Discriminator System is also protected by
patent applications.
The symbols:
are subject to international trademark registrations and their use is expressly
prohibited without written consent from StarLogixs Pty. Ltd.
Tester
Live
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