CARRIER 5M3907 - Caterpillar

Single Units
Each unit should be connected to a common ground.In a three-phase, four-wire system, the neutral wire should be grounded according to local wiring codes. Be sure to check your local wiring codes.Connection Diagrams
Illustration 1 g03368326
The generator lead connections are located in the terminal box on the generator or in the enclosure for the control panel. (1) Terminal Box on the Generator (2) Enclosure for the Control PanelThe generator lead connections are located in the terminal box on the generator or in the enclosure for the control panel.Change the position of the wire terminals in order to modify the connection. The code for the winding is specified on the nameplate.Wiring Code A for Three-Phase Configuration
Illustration 2 g00952030
Illustration 3 g00952058
Factory connection for "A" wiring code
Table 1
L-L Voltage for Wiring Code A    
Winding     50 Hz     60 Hz    
6     190-208     190-240    
9     -     -    Voltage Sensing:110V: 0V => (T8) / 110 V => (T11)220V: 0 => (T3) / 220 V => (T2)Wiring Code D for Three-Phase Configuration
Illustration 4 g00952201
Illustration 5 g00952365
Factory connection for "D" wiring code
Table 2
L-L Voltage for Wiring Code D    
Winding     50 Hz     60 Hz    
6     380-415     380-480    
9     -     600    Voltage Sensing:110V: 0V => (T8) / 110 V => (T11)380V: 0 => (T3) / 220 V => (T2)Voltage Sensing for 600V: Use of voltage sensing transformer. Request an available wiring diagram if necessary.Wiring Code F for Single-Phase Configuration or Three-Phase Configuration
Illustration 6 g00952381
Voltage LM equals one half of voltage LL.
Illustration 7 g00952390
Factory connection for "F" wiring code
Table 3
L-L Voltage for Wiring Code F    
Winding     50 Hz     60 Hz    
6     220-240     220-240    
9     -     -    Voltage Sensing:110V: 0V => (T8) / 110 V => (T11)220V: 0 => (T3) / 220 V => (T2)