Detailed Product Description
Alternator
Technical Data as Follows:
1. Main performance index
(1) Rated volts: 400/440V
(2) Rated frequency: 50/60Hz
(3) Rated speed: 1500/1800RMP
(4) Power factor: 0.8 (lagging)
(5) Exciting mode: brushless, self-exciting, self heat removal
(6) Insulation class: H
(7) Drip-leak-proof structure: IP22
(8) Volts adjustment: AVR
(9) Adjusting rate of stable voltage: ≤±1%
(10) Transient state voltage: -15%+20%
(11) Adjusting rate of stable frequency: ≤±1%
(12) Over-current: 3-5le≥5s
(13) Over-capacity: 1.5le≥2min
(14) Wave aberration rate of voltage THD≤3%
(15) Telephone harmony wave factor:THF≤2%
(16) Telephone effective factor: TIF≤50
2. Environment conditions
(1) Altitude: not exceed 1000m
(2) Cooling air temperature: 258-313k(-1540)
(3) Relative air humidity: not exceed 90%
3. Product features
(1) Reliable AVR exciting system and PMG for choice freely, providing invariable excitation on all occasions.
(2) Easy to be synchronize with power network or other alternators.
(3) Balanced rotor with single or two sealed ball-bearings.
(4) Convenient installation and maintenance, easy operations terminal, rotating rectifier and coupling bolts.
(5) Wide range of flange adaptor and single bearing coupling disc.
(6) Meet all the main landing standards.
4. Electrical features
(1) Excitation system:
The standard AVR are EA05A-3, EA04; SX440, SX460 or MAX321 (optional).
The main stator provides power for excitation of the exciter field via AVR. High efficiency Semiconductor inside AVR will ensure the output voltage up to the rated max from the lower remanence-voltages gradually. Output power of exciters rotor feeds to main rotor through three-phase full wave rectifier.
Two ends of the rectifier are connected with piezo-resistance for restraining surge voltage and avoiding the impact caused by short circuit or parallel synchronization loss. Exciters stator is equipped with permanent magnetic steel, through which to make alternator starting smoothly in any occasions.
All AVR adjusting rate of stable voltage ≤±1%. SX440 has parallel connection, low frequency protection, exterior voltage adjustment and other function.
MAX321 is for the permanent magnetic generator (PMG).
(2) Voltage adjustment ratio:
Voltage adjustment ratio refers to the voltage change from no-load to full-load with power factor ranging from 0.8 to 1 and 3%s fluctuation of the engine speed. Voltage can be adjusted via potentiometer of AVR.
(3) Insulation class H:
All the components are made up with special materials, also immersed in lacquer by peculiar tech. varnish and colophony materials are developed to strengthen the processing and machinery intensity of windings and revolving parts for protecting the alternator work under corrosive environment.
(4) Windings and electric features:
All the alternator stators adopt high magnetic conductibility cold rolling silicon steel plate to fold up, double winding, firmly structure, good insulating. Continuous damp windings abate surges. The poles and gears of the windings are carefully chosen and this helps to check the wave distortion of output voltage.
(5) Phone interference:
THF (defined by BS EN 60034-1) ≤2%.TIF (defined by NEMA MG1-22) ≤50.
(6) Radio interference:
Brushless apparatus and high-quality AVR ensure little radio interference in transmission.RFI noise filter is also available.
5. Mechanical features
(1) Frame
All industrial standard alternators are IP22 (NEMA1).Also IP23 is an option, but rated power will decrease 5%; Marine standard alternator is IP23, air filter is an option, but rated power of the generator also will decrease 5% while it is installed.
(2) Axis and key:
All of the generator rotors should pass balance test, whose vibration are lower than the minimum of BS6861.P.1,G2.5.two bearing alternator has a half-key testing balance.
(3) Terminal and terminal box:
The three-field generator has leads brought out to the terminals in the terminals box, and the terminals are put on the non drive end. The box is equipped with removable panels.
(4) Engine adaptor and coupling:
Single-bearing, engine adaptor to SAE#0001/212345coupling discs to SAE#6.57.581011.514161821.
Double-bearing, engine adaptor to SAE#0001/212345
6. Option parts
(1) Adaptors and drive disks
(2) Single phase
(3) Remote voltage adjust
(4) IP 23 enclosure
(5) Space heaters
(6) Thermistor
(7) Voltage 600V and higher
(8) Additional permanent magnet system
