In the field of power security,
diesel generator set are the "life-saving straw" for countless enterprises, factories, hospitals, and remote areas. How to avoid the trap of "buying the wrong product and losing money" when facing a market with a large number of brands and models? This article will take you straight to the core of purchasing, from power matching to long-term costs, and break down the five key factors for making wise decisions.
1、 Accurate calculation of power demand: Refuse to use "big horses pulling small cars" or "small horses pulling big cars"
The higher the power of a generator set, the better.
Key formula: Total load power=sum of all device startup power x 1.2 (safety factor)
Industry differences:
Industrial scenario: It is necessary to consider the starting current of the electric motor (usually 3-5 times the rated current);
Data center: UPS and cooling system redundancy need to be reserved;
Emergency backup: It is recommended to configure according to 80% capacity of the main power supply to balance cost and reliability.
Case warning: A factory underestimated the starting current of the air compressor, resulting in frequent overload and shutdown of the unit. Eventually, it had to purchase a second unit, causing a 40% increase in costs.
2、 Digging deeper into fuel efficiency: a hidden long-term cost killer
Fuel costs account for 60% -70% of the total lifecycle expenses of the unit.
Technical highlights:
High pressure common rail technology: 15% -20% more fuel-efficient than traditional mechanical injection;
Intelligent speed regulation system: automatically adjusts the speed according to the load, reducing fuel consumption by 30% when unloaded;
Waste heat recovery: Large units can be equipped with heat exchangers to provide heating or preheat fuel for the factory building.
Data support: A 1000kW unit can save over 200000 yuan in fuel costs annually by operating for 2000 hours per year and selecting an efficient model.
3、 After sales network: the "lifeline" in times of crisis
When there is a sudden power outage, the response speed determines the size of the loss.
Required items:
Is there an authorized repair point locally? Is the inventory of accessories sufficient?
Do you provide 24/7 remote technical support?
Is the maintenance rate outside the warranty period transparent?
Industry reveal: An international brand once suffered economic losses of over one million yuan due to a shortage of spare parts in China, causing customers to wait for repairs for up to 72 hours after a typhoon.
4、 Noise control and emission compliance: Double red lines must not be touched
The tightening of environmental policies has become a hard indicator.
Noise reduction scheme:
Silent speaker unit: noise can be reduced to 65dB (equivalent to normal conversation);
Muffler upgrade: Install catalytic converter to reduce low-frequency noise.
Emission compliance:
National III/Euro V emission units have become mainstream;
DPF (diesel particulate filter) should be selected for sensitive areas.
Policy reminder: Beijing, Shanghai and other places have implemented "National IV" access for construction site units, and violations will face fines or work stoppages.
5、 Whole life cycle cost: calculate the general ledger before placing an order
The initial price only accounts for 30% of the total cost, and hidden expenses are more crucial.
Cost List:
Maintenance fee: Three filters and engine oil need to be replaced every 1000 hours (approximately 2000-5000 yuan/time);
Major maintenance cycle: 8000-12000 hours require intermediate maintenance, with a cost exceeding 10000 yuan;
Residual value rate: High quality brands can have a residual value of up to 40% after 5 years, while miscellaneous brands have a residual value of less than 10%.
Investment return analysis: A certain enterprise purchased a European brand unit, although the initial price was 15% higher, the comprehensive cost of fuel saving and low failure rate over 5 years was actually 18% lower than that of a low-priced brand.
Conclusion: Choosing a diesel generator set is not a one-time purchase, but a long-term win-win situation with partners. It is recommended to prioritize brands that can provide you with a one-stop service of "demand calculation model customization after-sales management" based on specific working conditions, so that power security can truly become a worry free asset.
