GM-280 brushless three-phase AC synchronous generator with baseDetailed product description：

GM-280 brushless three-phase AC synchronous generator with base

1、 Product Overview:
The GM series 280 base brushless three-phase AC synchronous generator is a new type of brushless generator developed and improved based on the MAGNAPLUS drawings provided by Marathon Electric USA in the United States.
The GM series 280 base generator is paired with a diesel engine to form a fixed or mobile power source, suitable for various occasions and can also be used as an emergency power source. GM series generators are unique in design, advanced in structure, excellent in performance, reliable in operation, convenient in use, and suitable for various applications and climatic conditions, representing the current international advanced level.

2、 Excellent electrical performance:
1. Steady state voltage regulation rate ≤ 1%
2. Transient voltage regulation rate+20% -15% Un (60% In. cos π≤ 0.4 hysteresis)
3. Voltage regulation range>± 5% Un
4. The sine distortion rate of the line voltage waveform is less than 5%
5. Zero thermal deviation (extremely small)

3、 Unique structural design:
1. The generator is a fully protected structure with a unique internal ventilation and heat dissipation structure. The aluminum alloy fan has a high ventilation rate and low temperature rise.
2. Brushless excitation method, equipped with a solid-state voltage regulator, which has functions such as low-speed protection, electromagnetic interference suppression, over excitation shutdown, and stability adjustment and voltage amplitude adjustment.
3. The overall convex pole rotor structure integrates the damping winding with the rotor core, and the magnetic field winding is filled with thermosetting epoxy, which has high mechanical and electrical strength.
4. The rotating rectifier is located on the outside of the exciter rotor for easy maintenance.
5. The outlet box is spacious and can be equipped with various devices inside. The outlet box is located above and behind the machine base, beautiful and compact.
6. The insulation level is H-grade.
7. Modules and additional devices for parallel operation can be provided according to customer requirements.
8. The generator is divided into two structures: single bearing and double bearing.
The single bearing is equipped with international standard SAE interface and coupling plate, which can be matched with various imported oil engines.
Double bearings are suitable for various domestic diesel engines and can be equipped with various sizes of flange stops according to customer requirements.
9. Anti condensation heating tubes and thermal protection components can be installed according to customer needs.

4、 GM-280 brushless three-phase AC synchronous generator with machine base, operating conditions:
Air temperature not exceeding: 40 ℃
Altitude not exceeding: 1000 meters
If the usage conditions do not meet the above environment, the power output rating must be corrected according to regulations.

5、 Voltage, frequency, speed, power factor, and operating mode:
Rated voltage: 400 volts (480 volts at 60 hertz)
Rated frequency: 50 Hz or 60 Hz
Rated speed: 1500 rpm or 1800 rpm
Power factor: 0.8 lagging
Working mode: Continuous (S1)
According to customer needs, products with different output voltages or other special requirements can be made.

6、 Anti electromagnetic interference:
The generator equipped with SE350 voltage regulator meets the standard level.

7、 Bearings:
The bearings used in GM generators are double-sided dust-proof rolling ball bearings, lubricated once and with special high-performance grease. Under normal use, B10 ≥ 20000 hours.

8、 Order memo:
The generator can be made into 12 output terminals (specified when ordering) and is suitable for:
50Hz: 190~208V/380~416V
60Hz: 208~240V/416~480V

9、 Installation and external dimensions:
1. Single bearing generator:
NEMA Class H Insulation, 40℃ Ambient, 0.8 Power Factor Lagging, 50 HZ, 400V:

Machine frame	model	KW	L (mm)
two hundred and eighty-two	GM-8.6-4	eight point six	four hundred and fifteen
	GM-12-4	twelve	four hundred and sixty-six
	GM-16-4	sixteen
two hundred and eighty-three	GM-20-4	twenty	five hundred and twenty-nine
	GM-24-4	twenty-four
two hundred and eighty-four	GM-30-4	thirty	five hundred and eighty
	GM-32-4	thirty-two

Flange cover adapter (mm)						Coupling Disc (mm)
SAE	XD	XB	XC	H	J	SAE	K	M	XE	XF	XG
three	four hundred and nine point six	four hundred and twenty-eight point six	four hundred and fifty-one	twelve	ten point eight	11 1/2	eight	ten point five	three hundred and fifty-two point four	three hundred and thirty-three point three	thirty-nine point six
four	three hundred and sixty-one point nine	three hundred and eighty-one	four hundred and five	twelve	ten point eight	ten	eight	ten point five	three hundred and fourteen point three	two hundred and ninety-five point two	fifty-four
five	three hundred and fourteen	three hundred and thirty-three point four	three hundred and fifty-nine	eight	ten point eight	7 1/2	eight	nine point three	two hundred and forty-one point three	two hundred and twenty-two point three	thirty point two

2. Double axis bearing generator:

model	Φ(mm)	G(mm)	F(mm)	L(mm)	Φ1(mm)	Φ2(mm)	M(mm)
GM-8.6-4	forty-two	thirty-seven	twelve	five hundred and forty-three	two hundred and thirty	two hundred and sixty-five	twelve
GM-12-4	forty-two	thirty-seven	twelve	five hundred and ninety-four	two hundred and thirty	two hundred and sixty-five	twelve
GM-16-4	forty-two	thirty-seven	twelve	five hundred and ninety-four	two hundred and thirty	two hundred and sixty-five	twelve
GM-20-4	forty-eight	forty-two point five	fourteen	six hundred and forty-two	two hundred and fifty	three hundred	sixteen
GM-24-4	forty-eight	forty-two point five	fourteen	six hundred and forty-two	two hundred and fifty	three hundred	sixteen
GM-30-4	forty-eight	forty-two point five	fourteen	six hundred and ninety-three	two hundred and fifty	three hundred	sixteen
GM-32-4	forty-eight	forty-two point five	fourteen	six hundred and ninety-three	two hundred and fifty	three hundred	sixteen