Currently, with the continuous development of industry, the demand for electricity in various industries is increasing day by day. As is well known, diesel generators have a longer power generation time compared to other types of generators, and how to choose diesel generators has become a problem that troubles buyers.
1、 Choose a branded diesel generator set
1. Domestic diesel generator set brand. The main diesel generators with good sales and reputation include Shangchai, Weichai, Yuchai, and others.
2. Imported diesel generator set brand. The main diesel generators with good sales and reputation include Cummins, Volvo, Mercedes Benz MTU, and others.
3. Fully understand the origin and brand of the unit. Such as Stanford in the UK, Cummins in the US, and Volvo in Sweden. A comprehensive understanding of the manufacturer and brand of the diesel engine, generator, and control cabinet of the unit is necessary to comprehensively evaluate the level of the unit.
2、 Choose the appropriate diesel generator set power
1. Determine the type of diesel generator set. Diesel generator sets are divided into three types according to their usage frequency, namely commonly used diesel generator sets, continuously used diesel generator sets, and standby or emergency auxiliary power diesel generator sets.
2. Determine the power of the diesel generator set. When selecting a diesel generator set, it is necessary to choose a sufficiently high rated power and output power to support the application at the work site. Add up the operating power of all tools loaded onto the generator set to obtain the required rated power, and add up the starting power of all electric tools to obtain the maximum output power. In fact, due to mechanical losses, the industry generally stipulates that the diesel engine power should be ≥ 10% of the generator power, so a 10% buffer zone is added as a safety preventive measure on this basis.
3. Distinguish between apparent power and effective power. KVA is the apparent power, KW is the effective power, and they are not equal. The conversion relationship is 1KVA=0.8KW. Imported units are generally represented by KVA for power units, while domestic electrical equipment is generally represented by KW.
3、 Choose a reputable diesel generator manufacturer
1. The purpose is to avoid purchasing second-hand refurbished diesel engines. Some unscrupulous manufacturers in the market will privately refurbish and resell second-hand diesel engines to deceive customers. Some accessories are indeed new, but the generator itself is second-hand, making it difficult for non professionals to recognize. Therefore, it is advisable to choose a reputable diesel generator manufacturer.
2. Check if the manufacturer has brand authorization and OEM certificates. OEM means original factory commissioned manufacturing. For example, if you choose to purchase Cummins diesel generators, you can choose Cummins OEM manufacturers with guaranteed quality.
3. Look at the scale and establishment time of the manufacturer. Generally, large-scale manufacturers indicate a large supply volume and a large number of cooperative customers; Manufacturers that have been established for a long time indicate that they are more professional and stable in the manufacturing of diesel generators
4、 Comparison of prices and delivery futures among three companies
Compare with several suppliers to determine whether the prices and delivery times offered by the intended suppliers are on average in the same industry, whether the prices are relatively reasonable, and whether the delivery times are relatively short.
5、 Pay attention to whether there are diesel generator set accessories
Pay attention to whether the seller supplies accessories and consumables. If it is an imported unit, check if the manufacturer has sufficient imported accessories and consumables.
6、 Pay attention to whether there is good after-sales service
Purchasing is not the end, and the use and maintenance of diesel generator sets are also important. Good after-sales service can provide technical support and consultation, thereby helping to solve 90% of problems.