312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control – V2 – Charging Circuit

The charging circuit of the machine uses an alternator to charge the battery during normal operations. The charging circuit also supplies the low current circuit with power through the fuse panel.




Illustration 1 g00695744

Schematic Of The Charging Circuit 312C, 315C, 318C, 319C, 320C and 321C

(1) Batteries

(2) Alternator

(3) Breaker for the alternator



Illustration 2 g00776427

Schematic Of The Charging Circuit For The 322C

(1) Batteries

(2) Alternator

(3) Breaker for the alternator



Illustration 3 g00824791

Schematic Of The Charging Circuit For The 325C and 330C

(2) Batteries

(3) Breaker for the alternator

(31) Alternator

The current from terminal “B” of the alternator travels through the breaker for the alternator and to the batteries. The alternator supplies current to the electrical components of the electrical system through the fuse panel.