WEG ABW Serie Manual De Instrucciones página 6

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Besides attentively observing the procedures described in this manual, the users
must obey the following instructions:
Always work with the circuit and equipment de-energized, even if they are test,
maintenance or repair procedures;
Use interlocking and safety devices, and check that they function naturally, without
needing to be forced or suppressed.
DAnger!
Only qualified professionals with training and experience in electrical
circuits must execute the work described in this manual. These people
must also understand the risks involved in the work, and only execute it
after reading all the contents of this manual.
The correct operation of the ABW circuit breakers depends upon
the appropriate handling and correct instal ation, operation and
maintenance. Neglecting the basic requirements of installation and
maintenance can lead to injury to the user and/or damage to the
equipment and instal ation.
The ABW circuit breakers have features developed to prevent undue
operation. However, such features do not by themselves eliminate all
and any risk. Thus, the user is responsible for recognizing the potential
risks, using individual and collective protective equipment, and for taking
suitable safety measures.
Do not execute any adjustment or operate the equipment if the safety
devices are not present.
Before executing the visual inspection, test or maintenance in this
equipment, disconnect all the power supply circuits. Consider the circuits
to be energized until they are all really de-energized, tested, grounded
and identified. Particular attention should be paid to the electrical system
where the equipment is installed, as there may be reverse power supply.
Before installing covers or closing the doors of the panel, inspect the
area of the busbars to check that no tools or other objects have been
left in contact with them. Also check that there are no parts of covers or
closings of the panel in contact with or very near the busbars.
Before executing any electrical connection ensure that the circuits are
de-energized and grounded.
Introducing foreign objects in the equipment can cause a short-circuit,
which can result in irreparable damage, injury or death. Short-circuits
release a large quantity of energy, which leads to the quick expansion
of superheated and ionized gases. As a result, burns can occur even
before preventive actions are taken. People and objects can also be
thrown several meters from the equipment.
Such foreign objects can be tools, test remains, instruments, wires,
cables or other objects, conductors or not. It is also advisable to
maintains cloths and other materials a long way from the equipment.
6 ABW - Air Circuit Breaker