ABB ACS 300, Руководство пользователя

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iv ACS 300 User’s Manual
Safety Instructions
Notes Readers are notified of the need for special attention or additional
information available on the subject with the following symbols:
General Safety
Instructions These safety instructions are intended for all work on the
ACS 300.
WARNING! All electrical installation and maintenance work on
the ACS 300 should be carried out by qualified electricians.
The ACS 300 and adjoining equipment must always be properly
earthed.
The motor and all accessories must be earthed through
ACS 300.
All the ACS 300 units include capacitors connected between the
main circuit and the frame. These capacitors increase the earth
leakage current through the PE connector to the mains and may
cause some fault current circuit breakers to function.
Do not attempt any work on a powered ACS 300. After switching
off the mains, always allow the intermediate circuit capacitors 5
minutes to discharge before working on the frequency converter,
the motor or the motor cable. It is good practice to check (with a
voltage indicating instrument) that the frequency converter is in
fact unpowered before beginning work.
The ACS 300 motor cable terminals are at a dangerously high
CAUTION! Caution emphasises a matter in order to draw
special attention to it.
Note! Note gives additional information or points out
more information available on the subject.