Safety Precautions And Procedures; Preliminary; During Use - HT Instruments HT82 User Manual

1. SAFETY PRECAUTIONS AND PROCEDURES

This meter is in compliance with safety standards IEC/EN61557-1 and IEC/EN61010-1
related to electronic measuring instruments. For your own safety and to avoid damaging
the instrument follow the procedures described in this instruction manual and read
carefully all notes preceded by this symbol
• Avoid doing that in humid or wet places - make sure that humidity is within the limits
indicated in § 6.2.1.
• Avoid doing that in rooms where explosive gas, combustible gas, steam or excessive
dust is present.
• Keep you insulated from the object under test.
• Do not touch exposed metal parts such as test lead ends, sockets, fixing objects,
circuits etc.
• Avoid doing that if you notice anomalous conditions such as breakages, deformations,
fractures, leakages of battery liquid, blind display etc.
• Be particularly careful when measuring voltages exceeding 20V to avoid risk of
electrical shocks.
The following symbols are used:
CAUTION – refer to the instruction manual - an improper use may damage the
instrument or its components.
Double insulation
AC Voltage
1.1.

PRELIMINARY

• This instrument has been designed for use in environments of pollution degree 2.
• It can be used for testing the phase sequence on installations of overvoltage CAT IV
300V and CAT III 600V to the ground.
• When using the instrument always respect the usual safety regulations aimed at
protecting you against the dangerous electric currents and protecting the instrument
against incorrect operations.
• Only the leads supplied with the instrument guarantee compliance with the safety
standards in force. They must be in good conditions and, if necessary, replaced with
identical ones.
• This instrument is not suitable for measurements of non sine wave voltage.
• Do not test or connect to any circuit exceeding the specified overload protection or
under environmental conditions exceeding the limits indicated in § 6.1.1 and § 6.2.1.
1.2.

DURING USE

We recommend carefully reading the following recommendations and instructions:
An improper use may damage the instrument and/or its components or
injure the operator.
When the instrument is connected to measuring circuits never touch any unused terminal.
. When taking measurements:
CAUTION
EN - 2
HT82