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Name of product:Synchronous Main Alternator
Introduction:  JF205C点击查看全图
   JF205C synchronous main alternator is a 3 phase, salient pole type, single shaft extension and self-ventilated machine. It has features of compact structure, high voltage, wide voltage regulation ratio, high speed and high insulation class. The alternator is supported by single bearing. Rotor yoke consists of short shaft, spider and cylindrical yoke. Field pole is integrative in structure and tightened on the yoke with high strengthen bolts. Collecting ring is copper slip ring. The alternator is installed with imported bearing NU326EC4/VA301. Stator segment is made of high quality silicon steel plate DW 360-50 laminations. Stator core is tightened through studs and shrunk on the frame. Stator and rotor are both treated by vacuum pressure impregnation process. There is a centrifugal fan installed on the driving end. This machine has reasonable design in structure and good performance in techinique. It has already been used for 2000 horsepower narrow-gauge diesel electric locomotives exported to Myanmar mad by Sifang Locomotive and Rolling Stock Works. It can also be used for other occasion.
Parameter:

Model                                                                  JF205C
Rated capacity                                                     1165 KVA
Rated voltage                                                       224/650 V
Rated current                                                       3000/1035 A
Rated speed                                                         1800 r/min
Rated frequency                                                   150 Hz
Rated power factor                                               0.95
Insulation class                                                      H
Ventilation                                                             Self ventilation
Stator winding connection                                      Y(with neutral line)
Installation                                                             Single support
Excitation                                                              Separately excited
Rated excited current                                            184/236 A
Rated excited voltage                                            43/54 V
Rotation                                                                CCW(facing shaft extension end)
Mass                                                                     3312 Kg
Resistance(at 15
℃):
    Terminal resistance of stator winding                  0.000884Ω
    Excited winding                                                 0.1383Ω
Efficiency                                                              91.1% /93.8%
Overall dimension                                                 1180×1520×1175 mm

 

No load characteristic (speed: 1800r/min)

Excited current (DC)(A)

299.5

248.3

200.3

163

140

119.7

Terminal voltage(AC)(V)

706.0

681.7

655.8

624.7

599.4

565.5

Excited current(DC)(A)

89.6

70.7

48

21.3

0

0
Terminal voltage(AC)(V)

496.6

425.1

312.5

153.5

11.4

0

 

Short-circuit characteristic (speed: 1800r/min)

 

Excited current(DC)(A)

162.4

130.9

101.1

79.4

50.4

29.6

Short-circuit current(AC)(A)

3003

2443

1892

1498

971

587

Add:No.18 Dianji Street, Yongji 044502,Shanxi Povince,China
Tel:86-359-8072167/8072149   Fax:86-359-8072999
E-mail:guomaobu@yjemf.com.cn
Date:2007/7/5  Hit:3268  

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Yongji Xinshisu Electric Equipment Co., Ltd.(C) 2007 Copyright
Tel:86-359-8072167 Fax:86-359-8072999  E-mail:guomaobu@yjemf.com.cn