RING-RETAINING 8C3979 - Caterpillar

144-1666 Generator Ar
Table 1
MAIN STATOR AND ROTOR WINDING DATA    
ITEM     STATOR     ROTOR    
Stack Height    
558.8 mm (22 inch)    
571.50 mm (22.5 inch)    
Slots     60     4    
Coil Throw     1-11     1 - 2    
Turns/Coil     1     -    
Turns/Pole     -     216 (3)    
No. & Wire Size     53 of #13     1 of #6 Square    
Mean Length Turn    
1966.214 mm (77.41 inch)    
1686.56 mm (66.4 inch)    
Copper Weight    
147.8 kg (326 lb)    
216.3 kg (477 lb)    
Inside Connection (1)     2 Parallel Wye     Series    
Line Leads (No. & Size)     6-8 of #1 (48 Total)     1 of #8 Ld    
Low Voltage connected line resistance at
25° C (77.0° F)     0.00324 ohms     -    
Field lead resistance at
25° C (77.0° F)     -     1.66 ohms    
EXCITER WINDING DATA    
ITEM     STATOR (FIELD)     ROTOR (ARMATURE)     Permanent Magnet Stator    
Exciter Frequency (Hz)     60 Hz     120 Hz        
Exciter Poles     8     8        
Stack Length    
88.90 mm (3.5 inch)    
88.90 mm (3.5 inch)        
Coils/Group     1     1        
Turns (Coils)     175     18        
No. & Size Wire     2 of #16     4 #18        
Coil Throw     1 - 2     1 - 6        
Mean Length Turn    
355.6 mm (14 inch)    
419.10 mm (16.5 inch)        
Resistance at
25° C (77.0° F)     3.8 ohms     0.159 ohms        
Copper Weight    
12.92 kg (28.5 lb)    
5.53 kg (12.2 lb)        
Connection (2)     Series     2 Parallel Wye        
Line Leads     2 - #14     3 of #10 (3 Total)        
( 3 ) Winding table: Wind 12 layers with 18 turns per layer = 216 turns. Insert 12.70 mm (0.5 inch) vent spacer after layers 6 and 6 in the coil heads
( 1 ) See Specifications, "Connection Diagrams for Main Stator and Main Rotor" Connection Diagram 63
( 2 ) See Specifications, "Connection Diagrams for Exciter" Connection Diagram D 144-1668 Generator Ar
Table 2
MAIN STATOR AND ROTOR WINDING DATA (4)    
ITEM     STATOR     ROTOR    
Stack Height    
596.90 mm (23.5 inch)    
609.6 mm (24 inch)    
Slots     60     4    
Coil Throw     1-12        
Turns/Coil     1     -    
Turns/Pole     -     216 (3)    
No. & Wire Size     62