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ENGINEERED IN NAIROBI, KENYA
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  5. COMAP-A040
ComAp

COMAP-A040

Generator Over Frequency

⚠️WARNING

The generator electrical frequency has exceeded the maximum threshold. Over frequency indicates engine speed is too high, which can damage sensitive electrical equipment and indicates a governor problem.

🔍 Possible Causes

  • •Governor set to wrong speed
  • •Electronic governor calibration error
  • •Load dump causing overshoot
  • •Governor actuator sticking
  • •Speed droop setting incorrect
  • •Frequency sensor calibration error

🔧 Troubleshooting Steps

  1. 1Check actual frequency with external meter
  2. 2Verify engine RPM matches frequency (1500=50Hz, 1800=60Hz)
  3. 3Check governor speed setting
  4. 4Test governor response to load changes
  5. 5Verify speed droop and isochronous settings
  6. 6Calibrate frequency input if needed

🛠️ Parts You May Need

Electronic GovernorGovernor ActuatorSpeed SensorGovernor Control UnitFuel Control Linkage

Need parts? We stock genuine ComAp parts with next-day delivery in Nairobi.Call +254 768 860 665

❓ Frequently Asked Questions

What frequency should my generator produce?

In Kenya and most of Africa, generators should produce 50Hz (+/-0.5Hz under stable load). At 50Hz, a 4-pole generator runs at 1500 RPM, and a 2-pole at 3000 RPM.

Is 52Hz damaging to equipment?

Brief frequency variations are tolerable, but sustained operation above 52Hz can damage motors (they run fast and hot), transformers, and sensitive electronics. Fix promptly.

Need Expert Help?

Our engineers have fixed 1,000+ ComAp generators. Get professional diagnosis now.

WhatsApp EngineerCall +254 768 860 665

Advanced Diagnostics

Use Generator Oracle for AI-powered diagnosis, wiring diagrams, and repair manuals.

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Related Fault Codes

DSE-E120Generator Over VoltageDSE-E125Generator Under VoltageCOMAP-A015Engine Overspeed ShutdownCOMAP-A040Generator Over Frequency