- Generator Set
- DG175-1 (S/N: KL91-UP)
- DG175-2 (S/N: KJ61-UP)
- DG200-1 (S/N: KM31-UP)
- DG200-2 (S/N: KJ71-UP)
- DG230-1 (S/N: KM41-UP)
- DG230-2 (S/N: KJ81-UP)
- DG250-1 (S/N: KM51-UP)
- DG250-2 (S/N: KJ91-UP)
- DG275-1 (S/N: KM71-UP)
- DG275-2 (S/N: KL41-UP)
- DG300-1 (S/N: KJ41-UP)
- DG300-2 (S/N: KJ21-UP)
- DG350-1 (S/N: KM81-UP)
- DG350-2 (S/N: KL61-UP)
- DG400-1 (S/N: KM91-UP)
- DG400-2 (S/N: KL81-UP)
- DG450-1 (S/N: KJ51-UP)
- DG450-2 (S/N: KJ31-UP)
- DG175-2 (S/N: KJ61-UP)
The alternator voltage change over and wiring configuration/winding resistance data are given below.
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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility. |
Introduction
Note: Caterpillarretail gaseous fueled 175-450 KW generator sets are manufactured with dedicated output voltage, current, KW, and frequency ratings, as shipped from the factory. The choice to perform a voltage change over on these generator sets is strictly a business decision for a dealership.
Note: The voltage change over process is not supported by Caterpillar Engineering, Caterpillar Dealer Solution Network (DSN), Caterpillar Application and Installation (A&I) or the Caterpillar Customer Service Support.
This document provides limited reference information to assist the dealer to implement a voltage change over for these Caterpillar retail gaseous fueled generator sets.
There are no technical documents available from Caterpillar Engineering, Caterpillar Dealer Solution Network (DSN), Caterpillar Application and Installation (A&I) or the Caterpillar Customer Service Support to perform a voltage change over. The dealer should use existing published Schematics, Technical Information Bulletins (TIB), and other manuals as provided on Caterpillar Power Net Website, Service Information System (SIS), and Technical Marketing Information (TMI) to create their own process, disassembly and assembly instructions.
Precaution
- Only 12 lead model alternators are capable of being restrapped.
- Alternator de-rates should be considered when restrapping the output voltage of an alternator.
- The Caterpillar dealership is responsible for action items associated with, the pursuit and implementation of a generator set voltage change over.
- The Caterpillar dealership is responsible for determining if there are any necessary iron changes required and identifying the associated service part numbers for any iron changes required, through the dealership parts department, price list, Service Information System (SIS), and Technical Marketing Information (TMI).
- The Caterpillar dealership is responsible for determining the necessary alternator reconfiguration wiring needed for their specific application and to ensure that the alternator reconfiguration is correct and accurately implemented.
- The Caterpillar dealership is responsible for all costs and liability associated with reconfiguring the alternator.
Alternator Wiring Configurations
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| Illustration 1 | g06291204 |
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High wye stator connection | |
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| Illustration 2 | g06291205 |
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Low wye stator connection | |
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| Illustration 3 | g06291206 |
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Three-phase delta stator connection | |
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| Illustration 4 | g06291207 |
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Single/Three phase delta stator connection | |
Note: Single-phase loads should be connected to E1, E3, and neutral. Single-phase cannot be reconfigured to 277-480 VAC.
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| Illustration 5 | g06291208 |
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Six lead stator connection | |
Note: Lead alternators are not reconnectable
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| Illustration 6 | g06291209 |
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Six lead stator connection (450 KW) | |
Note: Lead alternators are not reconnectable
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| Illustration 7 | g06291210 |
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Three-phase delta stator connection series 1 (450 KW) | |
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| Illustration 8 | g06291212 |
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Three-phase delta stator connection series 2 (450 KW) | |
Alternator and Exciter Winding Resistance Values
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| Illustration 9 | g06291688 |
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Three-phase resistance values | |