1. When purchasing a generator set, it is important to avoid buying products that are too low-priced, as low-priced products often have quality issues and require attention to whether they are refurbished equipment.

2. The contract must clearly list the accessories that come with the purchased generator, such as fuel tanks, fuel pipes, batteries (including specifications, capacity, quantity, and other details).

3. Please avoid purchasing generator sets without protective functions (commonly referred to as four protections). When purchasing, please check whether the instruments of the generator set are complete and equipped with air switches to avoid purchasing diesel engines with lower power than the generator to assemble the set. Generally speaking, the industry stipulates that the power of diesel engines should be ≥ 10% of the generator power to consider mechanical losses.

4. Misunderstanding the correspondence between KVA and KW. Mistakenly mistaking KVA for KW and selling it to customers. In fact, KVA represents apparent power, KW represents useful power, and their corresponding relationship is 1KVA=0.8KW. Power is usually expressed in KVA for generators abroad, while electrical equipment in China is usually expressed in KW. Therefore, when calculating power, KVA should be converted to KW.

5. The relationship between rated power and standby power is not specified, but the standby power is sold to customers as rated power. In fact, the backup power is 1.1 times that of the long line power. In addition, the backup power is limited to 1 hour of continuous operation for 12 hours.

6. To understand the brand and production location of diesel engines or generators. For example, Cummins from the United States, Volvo from Sweden, Stanford from the United Kingdom, and so on. The enterprise is capable of independently manufacturing a diesel generator set. To comprehensively evaluate the level of the unit, it is necessary to have a thorough understanding of the manufacturers and brand information of the diesel engine, generator, and control cabinet.