with Lomg experience in manufacturing alternator / ac
generator.
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Alternator
Power Ranging 6.5 *****0KW
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for prime or standby use, more than *0 different
models, with *0Hz or *0Hz frequency, Single bearing
or Double bearing, Brush or brushless,
Self-excited. Abounds with almost every model in
stock.
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Excitation System
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Leadtech alternaotr with self-excited system by
means of brushless or brush and synchronous
features. Voltage regulation can be controlled with
±0.5%.
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Frequency And Voltage
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*0Hz or *0Hz as per customer’s request. Voltage
from **0 ~ **0V, **0V~**5V, **0~**0V, serial star,
parralle star and serial delta connection are
available, All three-phase generators are **-lead
reconnectable, providing voltage and phase
flexibility.
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Insulation and Protection
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Insulation: H, Protection: IP*2
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The components such as rotor and exciter are
specially impregnated with tropical grade
insulating oil and acid resisting polyest resin.
Providing the high build required for static
winging and the high mechanical strength required
for rotating components.
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IP*3 is for optional but the rated power will
decrease 5%.
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Voltage Regulators
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With this self-excited system the main stator
provides power via the Automatic Voltage Regulator
(AVR) to the exciter stator. The high efficiency
semi-conductors of the AVR ensure positive build-up
from initial low levels of residual voltage. 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, for example, by short
circuit or out-of-phase paralleling.
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The model we use including: MX**1, MX**1, AS**0,
SX**0, SX**0, etc.
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Winding
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All generator stators are wound to 2/3 pitch. This
eliminates triplen (3rd, 9th, *5th …) harmonics
on the voltage waveform and is found to be the
optimum design for trouble-free supply of
non-linear loads. The 2/3 pitch design avoids
excessive neutral currents sometimes seen with
higher winding pitches, when in parallel with the
mains. A fully connected damper winding reduces
oscillations during paralleling. This winding, with
the 2/3 pitch and carefully selected pole and tooth
designs, ensures very low waveform
distortion.
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Terminsal and Terminal Box
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Standard generators are *-phase reconnectable with
*2 ends brought out to the terminals, which are
mounted on a cover at the non-drive end of the
generator. A sheet steel terminal box contains the
AVR and provides ample space for the customers'
wiring and gland arrangements. It has removable
panels for easy access.
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Shaft and Keys
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All generator rotors are dynamically balanced to
better than BS***1:Part 1 Grade 2.5 for minimum
vibration in operation. Two bearing generators are
balanced with a half key.
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Heavy Duty Bearing
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Single bearing or Double bearing available. Heavy
duty bearings are double shielded and
pre-lubricated for the life of the bearing. This
helps resist contamination and ensures a maximum
bearing life.
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Phone interference
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THF(defined by *0th part of BS***9)
<2%.TIF(defined by
ASAC*0.*2)<*0
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Radio interference
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Brushless apparatus and quality AVR ensure little
radio interference in transmission. RFI noise
filter is also available.
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Warranty
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One year or ***0 operation hours, whichever comes
first.
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Manufacturing Standards
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GB**5, BS ***0,VDE ***0, NEMA MG***2,IEC*4,CSA
C*2.****0 and ASB*9
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