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[Practical Guide] The Power Selection Secret for Diesel Generators
Why is Power Selection So Important?
When purchasing a diesel generator, many customers only look at the “total power.” The result? Buying too large leads to idle waste, while buying too small means the equipment cannot carry the load.
In fact, generator power is rated in different ways. Understanding these differences ensures your choice is both cost-effective and practical.
Standby Power
Definition: The maximum power available when the generator is used only during utility outages.
Features: Suitable for emergency backup, with annual running hours not exceeding 500.
Prime Power
Definition: The power a generator can deliver for long periods when used as the main power source.
Features: Designed for extended daily operation with variable loads.
Continuous Power
Definition: The power available for 24-hour continuous operation under a constant load.
Features: The lowest rating, but the highest in stability.
Common Mistakes in Power Selection
Looking only at numbers: Misjudging because “standby” vs. “prime” was not considered.
Underestimating load: Starting current is higher than running current, leading to overload.
Chasing “bigger is better”: Running a generator long-term under light load causes carbon buildup and higher failure rates.
How to Choose the Right Power Rating
Clarify usage: Is it for backup only, daily operation, or continuous long-term supply?
Calculate load: Add up the power of all major equipment, then factor in starting surges.
Allow margin: A safety margin of about 20% above the rated load is recommended.
Consult the manufacturer: Let professionals provide load evaluation and configuration advice to avoid costly mistakes.
Fuel consumption is not a “fixed number.” It depends on power rating, load, and efficiency.
With simple formulas and real case studies, businesses can accurately estimate running costs before purchasing, avoiding future surprises.
At Yangzhou Taikang Power, we provide accurate fuel consumption data and energy-saving solutions to help customers ensure reliable power supply while significantly lowering operating costs.
Power selection is not about “the bigger the better,” nor about “just enough to run.”
By understanding the differences between Standby / Prime / Continuous Power, you can choose the most suitable generator set—saving costs while ensuring safe and stable operation.
Yangzhou Taikang Power delivers professional sizing guidance and customized solutions to ensure every investment you make brings maximum value.
