DES-204D synchronous main alternator is a 3 phases, salient pole type machine. Its volumetric power is 5,280KVA. It is adopted mature manufacturing processes and absorbed world wide advanced techniques. It features high capacity, high voltage, high insulation class and good temperature rising margin.
Rotor is supported by single bearing. Field pole is integrative in structure and tightened on the yoke with high strengthen bolts. Collecting ring is copper slip ring. One end of rotor is connected with frame through bearing E32626QTY and frame head. Stator segment is made of high quality silicon steel plate DW360-50. Stator core is tightened with studs. Stator and rotor are both treated by vacuum pressure impregnation process.
The machine has been used for DF8B freight heavy haul locomotives and DF11 quasi-high-speed passenger locomotives. It can also be used for other occasion.
Rated capacity |
3700 KVA |
Rated voltage |
540/770 V |
Rated current |
3955/2775 A |
Max.current |
5610 A |
Rated speed |
1000 r/min |
Rated frequency |
116.7 Hz |
Rated power factor |
0.95 |
Insulation class |
H |
Ventilation |
Forced ventilation |
Air input |
270 m3/min |
Stator winding connection |
Y(with neutral line) |
Installation |
Single shaft extension |
Excitation |
Separately excited |
Rated excited current |
289/358 A |
Rated excited voltage |
74/92 V |
Rotation |
CW(facing shaft extension end) |
Mass |
6032 Kg |
Resistance(at 15℃): |
|
Terminal resistance of stator winding |
0.00121Ω |
Excitation winding |
0.1533Ω |
Efficiency |
96.4% /97.0% |
Overall dimension |
1682×1690×1152mm |