Precautions for Use
The protection obtained by the instrument can be compromised if it is used in a
way that is not recommended by the manufacturer.
•
Do not attempt to perform any tests with this instrument until you have
read the user manual.
•
Tests are to be carried out on de-energized circuits only! Never connect
the unit to a live circuit.
•
The micro-ohmmeter must be connected to the earth/ground point, through
the ground terminal or the power cord.
•
Be sure the power cord is accessible at all times, in case the instrument
needs to be quickly unplugged for any reason. Always disconnect the
power cord before performing any repair on the instrument.
•
Do not obstruct either the intake vents or the fan, to avoid overheating.
•
During a circuit breaker measurement its contacts must be closed and
connected to an earth/ground point. The end connected to an earth/ground
point must be connected to the “C-” terminal.
•
Ensure the terminals are free of any voltage in relation to earth/ground
point and between each other. Take into account that in a substation
you will find, in disconnected points, high potential levels in relation to
the earth/ground point. Those potentials are caused by presence of
electromagnetic fields and can be minimized following the indications in
the paragraph before.
•
Make sure that the current connections are well connected, as well as the
C clamp, to avoid undesirable heating.
•
Be careful when manipulating the current terminals in the instrument.
High temperatures may occur in the current connections.
•
Never connect or disconnect the cables during a measurement. If a
modification must be made, press the STOP button first.
• The micro-ohmmeter should never be used in an explosive environment
(this includes poorly ventilated battery rooms and enclosures).
•
The instrument, test leads and measuring wires must be free of defects
and should be changed if there is any evidence of deterioration (insulation
split, burnt, etc.).
• Never exceed the safety values indicated in the specifications.
