Hyundai DHY18KSEm, Operation And Maintenance Manua

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User manual
2
technical advantage of engines in the aspects of
reducing exhaust gas, decrease fuel consumption
rate and good noise level control.
1.4
Alternator
All of the alternators chosen by HYUNDAI Power are
single bearing self ‐ excitation brushless alternators
with the attributes of international top brand. By
citing Stamford alternator as an example, we can
illustrate the features of our alternators as follows:
◆
Four polar brushless self ‐ excitation, single bearing,
insulation class is H and protection level is IP22.
◆
Stators are wound to 2/3 pitch, which can effectively
eliminates triple and curbs waveform deformation of
output voltage. When in parallel with the mains or
other generator sets, this type of winding can
effectively avoid excessive neutral currents and
reduces inductive heat.
◆
Before being assembled, rotors need to pass dynamic
balance testing. The improved damper reduces
voltage deviation and heat under unstable load.
◆
The exciter rotor output is fed to the main rotor
through a three phase full wave bridge rectifier, the
rectifier is protected by a surge suppressor against
surges caused by short circuit or out ‐ of ‐ phase
paralleling.
◆
Automatic voltage regulator has the feature of
automatic load curtailment which is used to protect
the engine, and make it possible to add full load to
the alternator at one time. Steady state voltage
adjusting rate can reach ±1% (under certain
requirements, steady state voltage adjusting rate can
meet ±0.5%). If PMG system is chosen, the motor
will have high starting capacity and the ability of
interference rejection for the deformed voltage
waveform fed by the main stator generated by
non ‐ linear load(such as silicon control DC electric
motor, UPS etc).
◆
Telephone influence factor TIF<50, telephone
harmonic wave factor THF<2%
，
the brushless style
and high quality AVR ensures low interference with
Radio.
1.5
Cooling System
The engine cooling system is water cooled. The water
cooled system is comprised of a radiator a pusher fan
and thermostat. The alternator has its own internal
fan to cool the alternator components.
1.6
Electrical System
The engine electrical system is 12 volt or 24 volts DC,
negative ground/earth. This system includes an
electric engine starter, a battery and a battery
charging alternator. For DC 12 volts electrical system
one battery is given. For 24 volt system two lead ‐ acid
batteries are given. Other types of batteries may be
fitted if they were specified.
1.7
Coupling
Engine and alternator are firmly joined by a coupling
cone that guarantees the proper assembly coaxiality
Single ‐ support machines are also used a special
flexible disk is used in place of a flexible coupling.
1.8
Fuel Tank and Base Frame
The engine and alternator are coupled together and
mounted on a heavy duty steel base frame. This base
frame includes a fuel tank with capacity of
approximately 8 hours operation under variable loads.
The tank is complete with filling cap and fuel level
gauge and is connected by flexible joints to the intake
piping and to the overflow piping containing fuel
from the injector drain. Big capacity generator's fuel
tank is separate from generator set.
1.9
Control Panel
All models of HYUNDAI Power generator sets use
high grade control panel. The core of control panel is
an imported digital diesel engine control module,
which has been facilitated with more complex
functions such as further monitors, demonstration,
people ‐ module dialogue, distance communication
and protection etc.
HYUNDAI Power generator set control panel use
steel plate structure, which ensures security and
reliability, and the surface of it has been treated with
static powder painting. The outside appearance is
beautiful. Special lock has been used to fix it. It has
been designed for easy maintenance.
1.10
Optional for Canopy Generator Set
1.10.1
External antifreeze adding hole
Our generator sets has been facilitated with external
antifreeze filling hole. When user intends to add
antifreeze, He only needs to open the antifreeze
filling hole on the roof of canopy and the radiator’s
pressure valve cap to directly add antifreeze to the
hole, and easily watch the anti ‐ freeze level.