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Justpower Brush Type Alternator

Justpower Brush Type Alternator

Short Description:

JUSTPOWER ST/ STC series are 4-pole AC synchronous alternators, with power range of 2-64KW, speed 1500RPM at 50Hz and 1800RPM at 60Hz. It can be used in town, countryside, work sites, mountain, boat and pasture lands as an electric power source for lighting purpose. Also it is widely used in agricultural sector, such as powering the submersible pump. Besides, it can be used as a standby power source case.


Product Detail

Product Tags

Product Introduction

The alternator can be connected to engine easily, and also the operation is quite simple.

The generator are of drip-proof with rotary field type and with the adoption of harmonic excitation system, that allow easy operation and simple maintenance. The generator are of three-phase four-wire type, making use of star connection with neutral point. They can be coupled with a prime mover directly or through V-belt making right or reverse continuous rotation at the rated speed.

Product Features

Drip proof type and protection class IP21

Self-excitation and voltage constant and stable

Insulation class B

As per standard JB/T3320.2-2000and IEC34-1 standard

Environment Condition

Altitude: not exceeding 1000M

Cooling air temperature: 258-313K(-15°C-40°C)

Relative air humidity: not exceeding 90%

Manufacturing Process

1. Check and control quality of raw material and spare parts while arrive our workshop.
2. Stamping of lamination.
3. Rotor die-casting.
4. Winding and inserting - both manual and semi-automatically. At this process, we carefully make winding of each stator and rotor, to ensure high efficiency of the alternator, to make sure the generator will not have over-heating, and the rotor and stator will have strong structure. High quality insulation papers are used to ensure good insulation and no touch between rotor and stator while running.
5. Magnetic pole polishing: At JUSTPOWER, we take a special process on the magnetic pole of our ST/STC alternators before installing -- we polish each piece of the magnetic pole by machine. The polishing will smooth the rotor surface, hence reduce the resistance during rotation. In this way, the alternator will have higher efficiency and more power.
6. Vacuum varnishing: at JUSTPOWER, we understand the importance of winding insulation. All wound components are impregnated with specially-designed materials by special process to make sure that the synchronous alternators can operate in dreadful condition. Also, we put damp-proof and anti-rust varnish on top of the rotor surface.
7. Rotor balancing.
8. Assembly: machining shaft, housing, end shields, etc;
9. Testing: each piece of JUSTPOWER ST/STC alternators are carefully test, checking the voltage under loading and without loading, checking the ampere output, checking the rotation noise, checking the temperature, as well as checking the fastening of different parts. In this way, we make sure every unit of JUSTPOWER synchronous alternators would leave our workshop with quality and reliability.
10. Painting: before painting, we will polish the cast iron body, as well as use special materials to smooth the surface, then do the painting.
11. Packing: all the alternators will be packed properly, with strong packing and elegant appearance.

Product Parameters

Model

Rated Power  (KW)

Voltage (V)

Current (A)

Power Factor  (cos)

Number of Poles

50hz/60Hz/ Speed(r.p.m)

In series

In parallel

In series

In parallel

ST-2

2KW

230

115

8.7

17.4

1

4

1500 / 1800

ST-3

3KW

230

115

13

26

1

4

1500 / 1800

ST-5

5KW

230

115

21.8

43.5

1

4

1500 / 1800

ST-7.5

7.5KW

230

115

32.6

65.2

1

4

1500 / 1800

ST-10

10KW

230

115

43.5

87

1

4

1500 / 1800

ST-12

12KW

230

115

52.2

104

1

4

1500 / 1800

ST-15

15KW

230

115

65.3

130

1

4

1500 / 1800

ST-20

20KW

230

115

87

174

1

4

1500 / 1800

Model

Rated Power  (KW)

Voltage

Current

Power Factor  (cos)

Number of poles

50hz / 60Hz / Speed(r.p.m)

(V)

(A)

STC-3

3KW

400/230

5.4

0.8

4

1500 / 1800

STC-5

5KW

400/230

9

0.8

4

1500 / 1800

STC-7.5

7.5KW

400/230

13.5

0.8

4

1500 / 1800

STC-10

10KW

400/230

18.1

0.8

4

1500 / 1800

STC-12

12KW

400/230

21.7

0.8

4

1500 / 1800

STC-15

15KW

400/230

27.1

0.8

4

1500 / 1800

STC-20

20KW

400/230

36.1

0.8

4

1500 / 1800

STC-24

24KW

400/230

43.3

0.8

4

1500 / 1800

STC-30

30KW

400/230

54.1

0.8

4

1500 / 1800

STC-40

40KW

400/230

72.2

0.8

4

1500 / 1800

STC-50

50KW

400/230

90.2

0.8

4

1500 / 1800


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