PLATE AS 5I8781 - Caterpillar

If there is a failure of the generator windings, the generator can be rewound.Caterpillar generators can be classified by three identification numbers: arrangement number, group number (part number) and serial number. The data in this manual is classified by the group number (part number) of the generator. The data is listed in alpha-numeric order. In order to locate the appropriate generator, refer to the index in the back of this manual. If you know only the arrangement number of the generator, refer to the Specifications, "Generator Identification" within this manual, which gives a cross-reference between the arrangement numbers and the group numbers. Each table that contains generator rewind data will refer to the connection diagrams for the main stator and the main rotor. The tables also refer to the connection diagrams for the exciter stator and the exciter rotor. For the connection diagrams, refer to the Specifications, "Connection Diagrams for Main Stator and Main Rotor" and the Specifications, "Connection Diagrams for Exciter".
Do not overheat any of the generator components in order to burn off the epoxy varnish. Overheating the components can cause the laminations to become shorted together. This will damage the lamination assembly.
Generator Identification
The generator identification plate is located on the left side of the generator.When service is required, the information that is given on this plate should be used. The generator identification plate includes the following information: serial number, model number and the rating of the generator set. The generator set consists of the engine and generator. All pertinent generator data is also included on the plate in order to provide the information that is necessary to order parts.
Illustration 1 g00728764
Generator Identification Plate
Illustration 2 g00601027
Generator Serial Number PlateWire Standards
The wire size must be correct and the wire number must be correct. The wire size is listed in American Wire Gauge (AWG). The wires must meet the standards in NEMA"MW 1000-1997 MW 24-C". If you use wire that does not meet this standard, failure of the generator may result. The wires that are listed in this book are round wires, unless the wires are specified otherwise.Varnish
The varnish must have a rating of class "F" for the following group numbers of generators: 106-3652, 108-3052, 121-3194, 144-0571, 4P-2238, 4P-2240, 4P-2242, 4P-2246, 4P-3015, 4P-4565, 4P-4571, 4P-7270, 4P-7272, 4W-0183, 4W-0184, 4W-6905, 4W-7049, 4W-7421, 4W-7422, 4W-7423, 4W-7424, 4W-7425, 4W-7427, 4W-7428, 4W-7429, 4W-7430, 4W-7431, 4W-7433, 4W-7434, 4W-8950, 4W-8951, 4W-8952, 4W-8953, 4W-8954, 4W-9069, 4W-9666, 4W-9667, 4W-9668, 4W-9669, 6I-2676, 6I-3088, 6I-3090, 6I-3092, 6I-3094, 6I-4827, 6I-4829, 6I-4833, 6I-4835, 6I-4839, 6I-4841, 6I-4843, 6I-4845, 6I-4847, 6I-4849, 6I-4851, 6I-4853, 7C-1601, 7C-1602, 7C-1603, 7C-1604, 7C-1605, 7C-1606, 7C-1607, 7C-1608, 7C-1609, 7C-1610, 7C-1611, 7C-1612, 7C-1613, 7C-1614, 7C-2269, 7C-2312, 7C-2617, 7C-2618, 7C-2619, 7C-2620, 7C-2621, 7C-2623, 7C-3484, 7C-3537, 7C-3538, 7C-3539, 7C-3540, 7C-3541, 7C-3542, 7C-4118, 7C-4121, 7C-4913, 7C-5094, 7C-7149, 7C-7151, 7C-7537, 7C-8892, 7C-8893, 7C-9126, 7E-5425, 7W-1877, 7W-3037, 7W-4367, 7W-4369, 7W-4371, 7W-4373, 7W-7521, 7W-7963, 7W-8671, 7W-8672, 7W-8673, 7W-8674, 7W-8675, 7W-8676, 7W-8677, 7W-8678, 7W-8679, 7W-8680, 7W-8681, 7W-8682, 7W-8685, 7W-8686, 7W-8687, 7W-8688, 7W-8690, 7W-8691, 7W-8692, 7W-8693, 7W-8695, 7W-8696, 7W-8697, 7W-8698, 7W-8699, 7W-8700, 7W-8701, 7W-8702, 7W-8743, 7W-8744, 9Y-0353, 9Y-0356, 9Y-0363, 9Y-0364,