AC Marathon alternator

1 AC marathon alternator
2 3P4W and with 50Hz/1500 rpm or 60Hz/1800rpm
3 3 kinds with different vol.480/220V
JYA184F is one of Junya JYA series alternator, it meet the requirements of GB755, BS EN60034, BS5000, VDE0530,NEMA MGt-32, IEC34-1, CSA22.2,AS1395.

JYA184F
3-Phase H level temperature rise
50Hz, 1500RPM
60Hz,1800RPM
Voltage
Star-series
380
400
415
440
416
440
460
480
600
Star-parallel
190
200
208
220
208
220
230
240
300
Trigon-series
220
230
240
254
240
254
277
277
346
Rated Capacity(KVA)
27.5
27.5
27.5
27.5
32.5
34.4
34.4
35.0
35.0
Rated Power(kw)
22.0
22.0
22.0
22.0
26.0
27.5
27.5
28.0
28.0
Effici Ency(%)
85.7
86.2
86.5
87.0
85.5
85.9
86.4
86.7
87.0
Power Input(KW)
25.7
25.5
25.4
25.3
30.4
32.0
31.9
32.3
32.2


Characteristic:
1.Optional auxiliary winding system provides sustained short circuit capability;
2.Advanced automatic voltage regulator(AVR) control for trouble-free operation under the most
demanding conditions;
3.Easy paralleling wiht mains or other generators;
4.Standard 2/3 pitch windings avoid excessive neutral currents;
5.Dynamically balanced rotors, with sealed-for-life ball bearing and single or two-bearing
construction.
6.Simple installation and maintenance, with easy access to terminals, rotaing diodes and
coupling bolts;
7.Built to conform with all leading industrial standards.

Electrical specification:

Excitation systems TP460&TP465 AVRS.

Insulation/Impregnation:
1.The insulation system is class "H";
2.All generator stators are wound to 2/3 pitch;
3.Telephone interference (as fefined by BS4999 part 40)is better than 210.TIF(as defined by
ASAC50.12)is better than 50;
4.The absence of brushgear and the hign quality AVR ensure low levels of interference with
radio transmissions. Additional RFI suppression may be supplied if required.
5.Standard generators are 3 phase reconnectable with 12 ends brought out to the terminals,
which are mounted on a cover at the non-drive end of the generator. A sheet steel terminal
box contains the AVR and provides ample space for customer's wiring and gland
arrangements, it has removable panels for easy access.

Enclosure:
IP23(NEMA1) is standard for all industrial and marine generators.

Shaft and keys:
All generator rotors are dynamically balanced to better than BS6861: Part 1 Grade 2.5 for minimum vibration in operation. Two bearing generators are balanced with a half key.