Four Lead Wye Connection
Illustration 1 | g00611469 |
Four Lead Wye Connection Diagram |
FOUR LEAD WYE CONNECTIONS     | ||
Generator Lead     | Line Lead     | Regulator Lead     |
T1     | T1     | 22     |
T2     | T2     | 24     |
T3     | T3     | 20     |
T0     | Neutral     | -     |
Six Lead Wye Connection
Illustration 2 | g00611486 |
Six Lead Wye Connection Diagram |
SIX LEAD WYE CONNECTIONS     | ||
Generator Lead     | Line Lead     | Regulator Lead (1)     |
T1     | T1     | 22     |
T2     | T2     | 24     |
T3     | T3     | 20     |
Connect T4, T5, and T6     | Neutral     | -     |
( 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. |
Ten Lead Wye Connection (High Voltage)
Illustration 3 | g00611584 |
Ten Lead Wye Connection Diagram (High Voltage) |
TEN LEAD WYE CONNECTIONS (HIGH VOLTAGE)     | ||
Generator Lead     | Line Lead     | Regulator Lead     |
T1     | T1     | -     |
Connect T4 and T7     | -     | 22     |
T2     | T2     | -     |
Connect T5 and T8     | -     | 24     |
T3     | T3     | -     |
Connect T6, T9     | -     | 20     |
T0     | Neutral     | -     |
Ten Lead Wye Connection (Low Voltage)
Illustration 4 | g00611596 |
Ten Lead Wye Connection Diagram (Low Voltage) |
TEN 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, and T0     | Neutral     | -     |
Twelve Lead Wye Connection (High Voltage)
Illustration 5 | g01027757 |
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) |
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     | -     |
Twelve Lead Delta Connection
Illustration 7 | g00611504 |
Twelve Lead Delta Connection Diagram |
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     | -     |
Note: A Delta connection is only available for twelve lead generators.
Note: A Delta connection may require certain generators to be derated.
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 leads 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 component
For 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".