Usage:
If there is a failure of the generator windings the generator can be rewound. A correct rewind job will return stator and rotor to like new condition. Four items are very important when rewinding any Caterpillar Generator.
Type Wire
The correct AWG (American Wire Gauge) size and number wire must be used. This can be found in the rewind data. The type of wire must be that called for by NEMA standard MW1000 section MW24C. Use of wire other than that called for by this NEMA standard may cause a failure of the generator.
Varnish
The varnish must have a class F rating. A high strength 100 percent fill epoxy varnish is recommended. This is the best type material to use.
Balance
Rotors that have been rewound and varnished must be dynamically balanced. Balance the rotor to a displacement of no more than .0005 in. (0.013 mm) peak to peak. Vibration caused by a rotor that is not correctly balanced can damage the generator.
Resistance
Resistance measurements will be accurate only if made with instruments able to measure very low resistance. A Wheatstone or Kalvin bridge is recommended. Do not use an ohmmeter.
Resistance values are correct only at the given temperature. If the temperature of the windings is different than that given, use the formula that follows to find the actual resistance:
2 Parallel Star Connected
3L3917 Generator
Rotor Winding Table
4 Parallel Star Connected (4 Wire)
2L320, 3L5456, 3L5066, 4L6275, 3L6923 And 5L4480 Generators
Rotor Winding Table
2L327, 2L4297, 3L5461, 4L7394 And 5L6516 Generators
Rotor Winding Table
2L334, 2L2633, 3L5464, 4L662 And 5L4681 Generators
Rotor Winding Table
2L4071 And 3L8233 Generators
Rotor Winding Table
2L6854, 3L5467 And 4L8475 Generators
Rotor Winding Table
2L341, 3L5469 And 4L8362 Generators
Rotor Winding Table
2L2003 Generator
Rotor Winding Table
2L347 And 3L5475 Generators
Rotor Winding Table
2L4255 Generator
Rotor Winding Table
2L3979 And 4L3468 Generators
Rotor Winding Table
4L5681 Generator
Rotor Winding Table
NOTE: 4L5681 is a twelve wire unit. A lead from each end of the six coil groups is brought out of the generator.
6 Parallel Star Connected
2L6016 Generator
3L1047 And 2L89 Generators
3L6181 Generator
Rotor Winding Table
4L1451 And 5L5097 Generators
Rotor Winding Table
2L2642, 2L9355, 3L5478, 3L5481 And 5L7944 Generators
Rotor Winding Table
4L1126 Generator
Rotor Winding Table
Rotor Winding Table
4 Series Star Connected
2L343 And 3L5471 Generators
Rotor Winding Table
2L348 And 3L5477 Generators
Rotor Winding Table
6 Series Star Connected
Rotor Winding Table
4L1453 Generator
Rotor Winding Table
2L2643, 2L9356, 3L5480, 3L5483 And 4L6038 Generators
Rotor Winding Table
Rotor Winding Table
3L1348 Generator
Rotor Winding Table
2/4 Parallel Star Connected
2L319, 3L5455, 3L5065, 4L6274 And 4L6907 Generators
Rotor Winding Table
2L321, 3L5457, 3L5067, 4L6276, 2L4668, 3L6131, 4L2737, 5L4627 And 2L9966 Generators
Rotor Winding Table
2L5871, 4L2399, 4L6599 And 5L4392 Generators
Rotor Winding Table
3L3404, 3L8587, 4L5914 And 5L3924 Generators
Rotor Winding Table
2L326, 2L449, 2L4296, 3L5460, 3L5068, 4L6277 And 3L5458 Generators
Rotor Winding Table
2L328, 2L4298, 3L5462, 4L6278, 2L5831, 3L6132, 5L4497, 3L1309, 3L5459 And 3L5069 Generators
Rotor Winding Table
4L6598 And 5L6710 Generators
Rotor Winding Table
2L6783, 3L9937 And 5L4851 Generators
Rotor Winding Table
2L333, 2L2632, 3L5463, 3L8160, 2L584 And 4L661 Generators
Rotor Winding Table
2L335, 2L2634, 3L5465, 4L663, 2L4243, 3L3166, 3L6133, 5L4697 And 2L9588 Generators
Rotor Winding Table
4L1704 Generator
Rotor Winding Table
2L6628, 3L3162, 3L8262 And 5L4364 Generators
Rotor Winding Table
2L6853, 3L5466 And 3L7633 Generators
Rotor Winding Table
2L6855, 3L5468 And 3L6134 Generators
Rotor Winding Table
4L4177 Generator
Rotor Winding Table
5L1550 Generator
Rotor Winding Table
2L4984 Generator
Rotor Winding Table
2L342, 3L5470, 4L8363, 3L2431, 3L6135, 5L6506 And 3L504 Generators
Rotor Winding Table
2L4404, 3L8324 And 5L3280 Generators
Rotor Winding Table
2L346, 3L5476, 3L1876, 4L9496, 2L5014, 3L6137 And 2L9745 Generators
Rotor Winding Table
3L2403 And 4L769 Generators
Rotor Winding Table
3/6 Parallel Star Connected
2L6014 And 3L8280 Generators
2L6017 And 3L8704 Generators
3L3745 Generator
Rotor Winding Table
Rotor Winding Table
3L3746 Generator
Rotor Winding Table
3L7188 Generator
Rotor Winding Table
5L5617 Generator
Rotor Winding Table
2L5931, 3L5473, 3L6809, 2L8288 And 3L6136 Generators
Rotor Winding Table
2L6630 And 3L9304 Generators
Rotor Winding Table
5L4435 Generator
Rotor Winding Table
4L452, 5L3254 And 4L9530 Generators
Rotor Winding Table
5L4698 Generator
Rotor Winding Table
2L2641, 2L9354, 3L5479, 3L5482, 2L7897, 3L6138, 3L6139, 2L9630 And 5L6733 Generators
Rotor Winding Table
2L7569 And 4L6061 Generators
Rotor Winding Table
5L4436 Generator
Rotor Winding Table
2L2742, 3L5484, 2L9629, 5L5944, 3L9019, 6L1637, 2L8122 And 3L6140 Generators
Rotor Winding Table
2L7621 And 4L5940 Generators
Rotor Winding Table
