HT COMBI419, User Manual

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400 Series
EN - 4
1. SAFETY PRECAUTIONS AND PROCEDURES
This instrument has been designed in compliance with directives IEC/EN61557-1 and
IEC/EN61010-1 regarding electronic measuring instruments. Before and while measuring,
carefully follow the instructions below:

Do not perform voltage or current measurements in humid environments.

Do not perform measurements near explosive gas or material and fuels or in dusty
environments.

Avoid contact with the circuit tested if no measurement is being performed.

Avoid contact with exposed metal parts, test terminals not in use, circuits, etc.

Do not perform any measurement if instrument anomalies are detected, such as
deformations, breaks, leakage of substances, no display reading, etc.

Pay special attention when measuring voltages above 25V in special environments
(building yards, swimming pools...) and above 50V in ordinary environments, as there is a
risk of electric shock.

Only use original HT accessories.
In this manual, following symbols are used:
CAUTION: Follow the instructions given in this manual; improper use may
damage the instrument, its components or create dangerous situations for the
operator.
DC or AC voltage or current.
Unidirectional pulsating voltage or current.
1.1. PRELIMINARY INSTRUCTIONS

This instrument has been designed for use in the environmental conditions specified in
§ 12.2.1 and § 12.4.1. Do not use in different environmental conditions.

The instrument may be used for measuring and verifying the safety of electrical
systems. Do not use on systems exceeding the limit values specified in § 12.2.1.

We recommend following the ordinary safety rules aimed at: your protection against
dangerous currents, the instrument’s protection against improper use.

Only the accessories provided with the instrument guarantee compliance with safety
standards. They must be in good conditions and must be replaced, if necessary, with
identical models.

Check that batteries are correctly inserted.

Before connecting the test leads to the circuit being tested, check that the desired
function has been selected.
1.2. DURING USE
We recommend carefully reading the following recommendations and instructions:
CAUTION
Failure to comply with the CAUTIONs and/or instructions may damage the
instrument and/or its components or cause dangers for the operator.

Before changing function, disconnect the test leads from the circuit tested.

When the instrument is connected to the circuit tested, never touch any lead, even if
not in use