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3. INTRODUCTION
On delivery inspect the generator to check it has not been
damaged during transport or that no parts are missing.
3.1 Control of ID plate
The generators can be identified by their ID plate. This should
be controlled and compared with the order specifications.
4. OPERATING PRINCIPLE AND CHARACTERISTICS
OF THE VOLTAGE REGULATOR SYSTEM
The exciter stator has a residual magnetism, which
guarantees self-exciting of the generator on start-up.
The AVR acts on the exciter stator directly controlling the
field generated by the main rotor by means of the sequence
exciter rotor - diode bridge - main rotor.
The voltage regulator controls and keeps constant the
average voltage of one phase.
A frequency control progressively deactivates the machine
when the drive engine speed drops below a pre-set,
adjustable threshold preventing over-excitement at low
operating speeds and abating the load engage effects on
the engine.
The regulator reaction time can be modulated to eliminate
any voltage instability that may arise.
A fuse protects regulator and generator from overloads and/
or faults
AVR board
5. GENERAL MECHANICAL AND ELECTRICAL
SPECIFICATIONS FOR COUPLING WITH ENGINE
As an independent unit, designed to be built into a electricity
generating set, it is impossible to apply all the signal decals
on the generator during production. These decals, indicating
a potential hazard or risk due to live components are
supplied loose and have to be applied by the constructor
of the generating set in the positions indicated in the figure,
once assembly of the whole set has been completed.
This generators are designed to operate at a temperature
between -20°C and 40°C and at a maximum altitude of
1000m at s.l.
The nominal performance indicated on the plate refers
to operation within these temperature and altitude limits.
Contact our Technical Office for operate outside these
parameters.
At temperatures over 40°C and/or altitudes above 1000m at
s.l. a derating should be expected (see table).
Ambient temp. (°C)
Altitude (m)
1000 1500 2000 2500 3000
Power factor
For all "UL" generators, don't consider these data and
contact the Sincro Technical Office.
ENGLISH
40
45
50
55
1
0,96
0,92
0,88
1
0,96
0,93
0,90
1
0,8
0,7
0,6
1
1
0,93
0,88
-
-
-
-
-
0,86
-
0,5
-
0,84
-
19
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