HEAD 5042958 - Caterpillar

Table 5
TWELVE LEAD WYE CONNECTIONS (HIGH VOLTAGE)    
Generator Lead     Line Lead     Regulator Load    
T1     T1     -    
Connect T4 and T7     -     22    
T2     T2     -    
Connect T5 and T8     -     24    
T3     T3     -    
Connect T6 and T9     -     20    
Connect T10, T11, and T12     Neutral     -    Twelve Lead Wye Connection (Low Voltage)
Illustration 6 g00611608
Twelve Lead Wye Connection Diagram (Low Voltage)
Table 6
TWELVE LEAD WYE CONNECTIONS (LOW VOLTAGE)    
Generator Lead     Line Lead     Regulator Lead    
Connect T1 and T7     T1     22    
Connect T2 and T8     T2     24    
Connect T3 and T9     T3     20    
Connect T4, T5, T6, T10, T11, and T12     Neutral     -    Six Lead Delta Connection
Illustration 7 g00611618
Six Lead Delta Connection Diagram
Table 7
SIX LEAD DELTA CONNECTIONS    
Generator Lead     Line Lead     Regulator Lead (1)    
Connect T1 and T6     T1     22    
Connect T2 and T4     T2     24    
Connect T3 and T5     T3     20    
( 1 ) Regulator leads are used on Generator sets with a 3500B Engine. On PMPE generators, sensing isolation transformers are used. The line lead's voltage connects to one side of the sensing isolation transformer. The voltage regulator connects to the other side of the sensing isolation transformer. On SE generators, the stator windings are tapped in order to supply sensing voltage to the regulator.Twelve Lead Delta Connection
Illustration 8 g00611504
Twelve Lead Delta Connection Diagram
Table 8
TWELVE LEAD DELTA CONNECTIONS    
Generator Lead     Line Lead     Regulator Lead    
Connect T1 and T12     T1     22    
Connect T4 and T7     -     -    
Connect T2 and T10     T2     24    
Connect T5 and T8     -     -    
Connect T3 and T11     T3     20    
Connect T6 and T9     Neutral     -    Generator line leads ("T1" through "T12") can be multiple. For example, three generator line leads might be designated as "T4". Multiple line leads allow the lead to be flexible. Flexible leads help maintain the current carrying capacity which is required. If generator line leads are similarly marked, these leads should be connected together. These leads should be treated as one conductor. Generator line leads can terminate in the following ways:
end at the terminal strip
directly fastened to the load leads
fastened to another componentFor more information, refer to Testing And Adjusting, "Leads - Connect".Depending on the connections that are made between the load and the generator line leads, single-phase voltages and/or three-phase voltages are possible. For more information, refer to Operation and Maintenance Manual, LEKQ7119, "Engine Data Sheet". Refer to Connection Diagrams, SENR4794.