EDGE-CUTTING 4T8940 - Caterpillar

252-3970 Generator and 372-3048 Generator Ar
Table 1
1822 Frame 4160 VAC
Main Stator and Main Rotor Winding Data    
Arrangement with Stator RTDs     252-3970            
Main Stator and rotor Winding Data     1822            
Item     Main Stator     Main Rotor        
Stack Length    
609.6 mm (23.999 inch)    
622.3 mm (24.499 inch)        
Slots     96     4        
Span     1 - 17     1 - 2        
Turns per Coil     2     -        
Turns per Pole     -     180 (3)        
Number and Wire Size (AWG)     (3 high) .137 x (1 wide) .245     #4 Sq        
Mean Length Turn    
2370 mm (93.30 inch)     -        
Copper Weight    
262 kg (577.61 lb)    
308 kg (679.02 lb)        
Internal Connection     Series Wye     Series        
Internal Connection Diagram     407080
Connection Diagram 10 (1).     -        
Line Leads Number and Size (AWG)     6 Leads, 1 - #4/0 each     2 - #8        
Low VACage Connected Line to Line Resistance at
25° C (77.00° F)     0.0831     -        
Field Resistance at
25° C (77.00° F)     -     0.8963        
I. E. Winding                
Turns per Coil: Span                
Number and Wire Size (AWG)                
Resistance at
25° C (77.00° F)                
I. E. Winding                
Turns per Coil: Span                
Number and Wire Size (AWG)                
Internal Connection Diagram                
Exciter Winding Data    
Exciter     Stator (Field)     Rotor (Armature)     Permanent Magnet Stator    
Exciter Frequency (Hz)     180     120     240    
Exciter Poles     8     48     48    
Stack Length    
101.6 mm (3.999 inch)    
101.6 mm (3.999 inch)