When Using The Instrument; Symbols; Instructions; Safety Features - Metrix AX 501 Manual De Instrucciones

1.1.2.

When using the instrument

∗
When the required voltage and current parameter values are not known, start by using the
lowest values.
∗
Before disconnecting the connection leads of the circuit being tested, make sure that the
power supply is switched off. This prevents the creation of break or closure extra-currents
which may melt the fuse at high currents.
∗
Never exceed a total output of 60 V peak in relation to the earth (common mode).
∗
The instrument must be placed in a ventilated room. Take care not to obstruct the
ventilation holes.

1.1.3. Symbols

The following symbols are used:
CAUTION:
Functional earth

1.1.4. Instructions

∗
Before opening the instrument, disconnect if from all sources of electric current and from
the measuring circuits; make sure that you are not charged with static electricity, which
could irreparably damage the instrument's internal components.
∗
Before opening the power supply to change the fuse, you must disconnect the leads and
mains power supply cable. The fuse must be replaced by a model identical to that
delivered with the instrument.
When the instrument is open, some of the internal capacitors may conserve a
dangerous potential, even once the instrument has been powered down.
In the event of faults or abnormal constraints, power down the instrument and
do not allow anyone to use it until it has been checked.
∗
Adjustments, maintenance or repair work on the instrument must only be carried out by
qualified personnel.
∗
A "qualified person" is someone who is familiar with the installation, the construction, the
application and the dangers at hand. This person is authorised to power up and power
down the installation and equipment, in compliance with safety regulations.
1 .2.

Safety features

∗
The fuse protects the primary coil of the power supply transformer against mains voltage
errors.
Only use a fuse of the following type:
∗
The power supply is equipped with active protection systems against short-circuits,
overloads and overheating of the transformer.
20
Consult the manual.
Incorrect use may damage the instrument and endanger the user.
T 6.3 A / 250 V for the 230 V version (AT0087)
T 10 A / 250 V for the 115 V version (540828)
Chapter II
Stabilized power supplies