Yongji Electric Manchine Factory,CNR
加入收藏
Home || About us || Products || Foreign Trade || Customer service || Contact us || Chinese   
     Indexed by products
 Indexed by products
 

     Category
  ├Electric Machine for Diesel Locomotive
  ├Electric Machine for Electric Locomotive
  ├Electric Machine for MU
  ├Motor for Oil Drilling Machine
  ├Wind-driven Generator
  ├AC Motor for Excavator
  ├Electric Machine for Urban Rail Vehicle
  ├Power Frequency Generator
  ├Motor for Steel Works
  ├Exports
  ├EMD Traction Motor
  └GE Traction Motor
  ├Electric Components
  └Electric Cabinet
  ├Power Sermi-conductor Elements
  ├Power Sermi-conductor Device
  ├Combinet Elements
  └Electric
  ├Urban Rail Vehicle
  └Industrial Tractor
 
 Back     Suggestion  

Name of product:Synchronous Main Alternator
Introduction:  JF205A点击查看全图
  

JF205A synchronous main alternator is a 3 phase, salient pole type machine with two bearings support at both ends and self-ventilated structure. It has features of small size, high voltage, wide voltage regulating ratio, high speed and high insulation class. At the non-driving end, shaft head and spider are shrink fitted to make spider assembly. The spider assembly, cylindrical yoke and short shaft at driving end are connected together to compose the construct rotor yoke with high strengthen bolts. Collecting ring is copper slip ring. The alternator is installed with imported bearing. Bearing NU2230EC4/VA301 is installed at the driving end and bearing NJ326EC4/VA30=HJ326EC is installed at the non-driving end. Stator segment is made of high quality silicon steel plate DW360-50 and stator core is tightened by studs and shrunk on the frame. Stator and rotor are both treated by vacuum pressure impregnation process. There is a centrifugal fan installed at the driving end. The alternator has reasonable design in structure and good performance in technique. It has already been used for 2000 horsepower CKD7 narrow-gauge electric diesel locomotives exported to Myanmar made by Dalian. It can also be used for other occasion.

Parameter:

Model                                                                 JF205A
Rated capacity                                                    1130 KVA
Rated voltage                                                      216/644V
Rated current                                                      3000/1007A
Max.current                                                        4800A
Rated speed                                                        1800r/min
Rated frequency                                                  150Hz
Rated power factor                                              0.95
Insulation class                                                     H
Ventilation                                                            Self ventilation
Stator winding connection                                     Y(with neutral line)
Installation                                                            Double shaft extension
Excitation                                                             Separately excited
Rated excited current                                           184/245A
Rated excited voltage                                           43/56V
Rotation                                                               CW(facing slip ring end)
Mass                                                                   3663Kg
Resistance(at 15
℃):
     Terminal resistance of stator winding                0.000884Ω
     Excited winding                                               0.1383Ω
Efficiency                                                             93.2% /88.3%
Overall dimension                                                1150×1280×1445mm

 

No load characteristic (speed: 1800r/min)

Excited current (DC)(A)

300

283.1

213.1

162.1

126.8

95.2

75.5

Terminal voltage(AC)(V)

685.4

680.6

644.3

599.8

549.9

475.3

400.7

Excited current(DC)(A)

54.1

37.8

20.5

11.3

0

0

0

Terminal voltage(AC)(V)

301.5

217.3

126

77.8

4.3

0

0

 

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

Excited current(DC)(A)

191.3

163.3

136

108.7

81.7

54.3

26.5

Short-circuit
current(AC)(A)

3516.7

3014.7

2510.3

2008.0

1507.7

1004.0

503.3

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:3021  

 Back     Suggestion  


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