75kVA Generator Repair for Voltage Spikes in Centurion
A 75kVA diesel generator in Centurion was running erratically and causing voltage spikes. Power Mechanics replaced the speed controller and regulator and calibrated the fuel injector pump.
Erratic Running & Voltage Spikes
The 75kVA generator was operating erratically and causing voltage spikes. The repair focused on the engine speed-control system and voltage regulation, together with calibration of the fuel injector pump.
Generator rating: 75kVA
Generator was running erratically
Voltage spikes were occurring during operation
Speed controller replaced
Regulator replaced
Fuel injector pump calibrated
Speed Control, Regulation & Fuel Calibration
The repair addressed the reported unstable running and voltage-spike condition by replacing the speed controller and regulator and calibrating the fuel injector pump.
Speed Controller Replacement
The generator's speed controller was replaced as part of the repair to address the erratic running condition.
Regulator Replacement
The regulator was replaced as part of the work to address the generator's voltage-spike problem.
Fuel Injector Pump Calibration
The fuel injector pump was calibrated to support correct engine operation and stable running.
Generator Fault Diagnosis
The reported symptoms were assessed as part of the repair, with attention to engine speed control and voltage regulation.
75kVA Generator Engine & Fuel System
Photograph from the Centurion repair showing the diesel engine, fuel injection components and service work area.
Generator Speed & Voltage System Serviced
The speed controller and regulator were replaced and the fuel injector pump was calibrated as part of the repair of the 75kVA generator.
Generator Repairs in Centurion
This case study is an example of the generator repair and fault-diagnosis work Power Mechanics carries out in Centurion and surrounding Gauteng areas.