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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