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Brushless Alternator
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Elwar is the backbone enterprises in China to produce of high-grade alternator products,  With the ability of gold processing, punching, winding, dipping, baking, assembly, debugging, testing all means of production process. After several years of efforts, "Ermar” has become the famous brand in China made alternators, enjoys a good reputation in the alternator area. 

We have a strong technical team, absorb the domestic and foreign advanced design and manufacturing technology, own R & D AEM series three-phase brushless alternator, small volume, big power, exquisite appearance, high reliability, their technical performance indicators have reached international advanced level, conform to the IEC International Electrotechnical Association and GB755 etc. related standards. The power range of 6.5 ~ 2000KW, and can be matched with all domestic and foreign mainstream engines. With single and double bearing, marine and land use, high and low voltage, and can be customized according to user needs. Elwar alternators have been used by dozens of domestic main diesel generator factories, are widely used in military, communication, banking, shipping, mining, real estate and other enterprises and institutions, and exported to Europe and the United States, played a good economic benefit and social benefit. Through long-term users, generally reflect the supply of high quality, good product performance, in recent years the annual product 8000-10000 table, service after sale volume only 1 ‰, good use effect.

(A)Under the following environment, the alternator could run continuously
1.Altitude: not exceed 1000m
2.Cooling air temperature: -15℃ to 40℃
3.Relative air humidity: not exceed 90%

(B)Features
1.Providing invariable excitation on all occasions
2.Easy to be connected with power network or other alternators
3.Balanced rotor with single or two sealed ball bearings
4.Convenient installation and maintenance with easy access to terminals, rotating diodes and coupling bolts
5.Wide range of flange adaptor and single bearing coupling disc
6.In conformity with all leading standards

(C)Electrical Character
1.Excitation System
Auto-voltage regulation (AVR) has more than 3 series, including EA05A, SX460 and SX440 and others. The main stator provides the exciter stator with the power via AVR. Output power of exciter’s rotor is input to that of mains through 3-phase full wave rectifier. Two ends of the rectifier are connected with piezoresistance for restrainin surge voltage and avoiding the impact caused by short circuit or parallel syncronization loss. Exciter’s stator is equiped with permanent magnetic steel. It can make alternator starting smoothly in any occasions. Whole stable voltage regulation is ≤±1%, and SX440 has feature of parallel connection, low frequency protection and exterior voltage adjustment, etc.

2.Voltage Regulation
Voltage regulation refers to the change of voltage from no-load to full load with power factor range from 0.8 to 1 and 4% ‘s fluctuation of the speed of engine. Voltage is adjusted via potentiometer of AVR.

3.Insulation
Insulation class H.
All regulatory components are made up with special materials and 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 energy cold rolling silicon steel plate to fold up, double winding, firm structure, good insulation. Continuous damp windings abate surges. The poles and teeth of the windings are carefully chosen, which helps checking the wave distortion of output voltage.

5.Phone Interference
THF (as defined by BS EN 60034-1) less than 2%. TIF (as defined by NEMA MG1-22) less than 50

6.Radio in Interference
Brushless apparatus and high quality AVR ensure little ratio interference in transmission. RFI noise filter is also available.

(D)Mechanic Features
1.Frame
All industrial standard alternators is IP22 (NEMA1). IP23 is also available, but rated power will decrease 5%. Marine alternator is IP23 as normal standard. Air filter is an option, but rated power will decrease 5% while it is installed.

2.Axis and Key
All rotors should pass balance test, which vibration is lower than the minimum value of BS6861 P.1, G 2.5. Two-bearing alternator has a half-key testing balance. 

3.Terminal and Terminal Box
The normal three-phase alternators have 12 leads brought out to the terminal box. The terminals are put on the board of the non-drive end. AVR is mounted in the terminal box made in steel sheet and enough space left inside for laying wires. The box is equipped with removable panels.

4.Engine Adaptor and Coupling
AEM series alternators have two kinds of structure, single bearing and double bearing. Engine adapter for single-bearing could be SAE#00, 0, 1/2, 1,2,3,4 and 5; Coupling disc for single-bearing could be SAE#6.5, 7.5, 8,10,11.5,16,18,21. Engine adapter for double-bearing could be SAE#00, 0, 1/2, 1,2,3, 4 and 5. 

(E)Option Features
1.Adapters and interchangeable drive disk
2.Single phase
3.Remote voltage adjust
4.IP23 protection class
5.Space heaters
6.Thermistors
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