HT instruments М75 - Manual (Page 4)

M72 - M73 - M74 - M75
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This instrument complies with safety Standards IEC/EN61557-1 and IEC/EN61010-1
related to electronic measuring instruments.
CAUTION
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
.
When taking measurements:
 Avoid doing that in humid or wet places - make sure that humidity is within the limits
indicated in section “environmental conditions”. 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 25V in particular places
(building yards, swimming pools, etc.) and 50V in ordinary places to avoid risks of
electrical shocks.
The following symbols are used:
CAUTION - refer to the instruction manual - an improper use may damage the
instrument or its components
CAUTION for dangerious voltage. Risk of electric shock
DC or AC voltage or current
Meter with double insulation
Ground reference
The symbol indicates that the instrument shall not be connected to systems with
rated line voltage (Phase to Phase) higher than 605V.
1.1. PRELIMINARY
INSTRUCTIONS
 This instrument has been designed for use in environments of pollution degree 2
 It can be used for tests on electrical installations of CAT III and 550V maximum rated
interlinked voltage (and to earth)
 You are recommended to respect the usual safety regulations aimed at protecting you
against dangerous currents and protecting the instrument against improper use
 Only the original test leads supplied along with the instrument guarantee compliance
with the safety Standards in force. They must be in a good conditions and, if
necessary, replaced with identical ones
 Do not test nor connect to any circuit exceeding the specified overload protection
 Do not take measurements under environmental conditions exceeding the limits
indicated in this manual
 Make sure that batteries are correctly installed
 Before connecting the test probes to the installation make sure that the right function is
chosen