Do you make common diesel generator set purchase methods?

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The commonly used generator sets have a long continuous working time, the load curve changes greatly, and the selection of unit capacity, number of units, type and the control mode of the unit are different from those of emergency units.

Diesel generator set manufacturers analyze and purchase common unit methods as follows:

1) Determination of capacity: According to the long-term continuous operation of the unit, the output power can meet the maximum calculated load selection of the whole project, and the capacity of the standby unit of the generator set should be determined according to the importance of the load. The continuous output power of the diesel engine is generally times the rated power.

2) Determination of the number of units: the general setting is usually more than 2 units to ensure the continuity of power supply and adapt to the change of electricity load curve. The number of units is large, so that the number of units put into the generator set can be determined according to the change of electricity load, so that the diesel engine is often operated under economic load, so as to reduce the fuel consumption rate and reduce the cost of power generation.

The best economical operating state of a diesel engine is between 75% and 90% of the rated power. In order to ensure the continuity of power supply, the commonly used unit itself should consider setting up a standby unit.

3) Determination of speed: the high-speed unit with a speed of 1000 1500 rpm should be selected for general civil use, and the low-speed unit with a speed of 300 350 rpm is suitable for the main engine of the ship. (4) Determination of voltage:

The determination of the output voltage of the generator is the same as that of the emergency generator set, generally 400V, and the high-voltage generator set can be selected for the project with large individual power consumption and long transmission distance.

First, the aspect: the diesel generator directly affects the company's cost, whether it is reasonable, too high or too low is not advisable. If the diesel generator set is too high, then it must damage the interests of consumers, and if the other manufacturer is much lower, then it is nothing more than fake and shoddy.

If it is a regular configuration, the same product, the same power** will not be very different.

Second, the quality aspect: the quality of diesel generators is very important. General raw material procurement comes from formal channels, brand manufacturers, and quality.

Third, whether the qualifications are complete: we know that the people who sell Yuchai only produce engines, and if you buy a complete set of diesel generator sets, then only the diesel generator set OEM manufacturers can buy them. With their authorization, then they agree to use their machines to assemble the generator set, and at the same time get their quality assurance and after-sales service.

Therefore, when purchasing, it is necessary to pay special attention to whether the qualifications are complete.

Fourth, after-sales service: to choose the right diesel generator manufacturers, after-sales service is also an important point. If there is a problem with the unit and the manufacturer's service is not timely, then what an annoying thing? Therefore, reliable after-sales service is also a factor to be considered when purchasing generator sets.

The selection of the right diesel generator set manufacturers is mainly considered from the aspects of product quality, quality, qualification, and service.

A diesel generator is a device that converts the bioenergy of diesel into electrical energy, which can be used as a prime power source or as a backup power source. What pitfalls will you encounter when buying a generator set? Hopefully, these will be helpful to the owners who are about to buy generator sets.

The general power of the generator set is from 8 to 2000kw, and the diesel generator brands include Cummins generator, Perkins generator, Volvo generator, Doosan Daewoo generator, Yuchai generator, Weichai generator, Shangchai generator and other brands. Generally, diesel generators include stationary generators, mobile generators, silent generators, containerized generators and other styles.

When the owner chooses the generator set, the reference basis is: the amount and power of the electrical equipment, the environmental requirements for the use of diesel generators, the requirements for the automation level of diesel generators, the owner's budget and so on.

According to the requirements of generator set selection, the owner selects the appropriate generator set, and then selects the appropriate generator set manufacturer according to the production capacity, innovation ability, pre-sale, after-sales service ability and so on.

So what do owners need to pay attention to when buying generator sets?

1. The rated power of the generator set is kva and kw, but 1kw =, that is, the power of the 500kva genset is 400kw.

2, to refurbished machine or second-hand pretending to be a new machine, brand diesel engine has a unique serial number in the world, the owner bought the generator set, you can check these serial numbers on the Internet, refurbished machine or second-hand phone will definitely appear use information.

3. The generator set uses inferior or unqualified raw materials.

To buy a generator set, it is recommended to shop around and visit the generator set manufacturer before deciding.

Things to pay attention to when buying a diesel generator set:

1. Confuse the relationship between KVA and KW. Exaggerate the power of KVA as KW and sell it to customers. In fact, kva is the apparent power, kw is the effective power, and the relationship between them is ikva=.

Imported diesel generator sets generally use KVA to express the power unit, while domestic electrical equipment is generally expressed in KW, so KVA should be converted into KW by 2% when calculating power.

2. Don't talk about the relationship between the long-line (rated) power and the backup power, just say a "power", and sell the backup power to customers as the long-line power. Actually, backup power = long line power. Moreover, the backup power can only be used for 1 hour of 12 hours of continuous operation.

3. The power of the diesel generator set is as large as the power of the generator in order to reduce costs. In fact, the industry generally stipulates that the power of diesel generator sets is 10% of the generator power, because there is mechanical loss. What's more, there are also diesel generator set horsepower as kilowatts false alarm to the user, and use less than the generator power of the diesel generator set to configure the unit, commonly known as:

Small horses and large carts, so that the life of the unit is reduced, frequent maintenance, and the use fee remains high.

4. Sell the refurbished machine to customers as a new machine, and some will refurbished diesel generator sets with new generators and control cabinets, so that the general non-professional users can not distinguish whether it is a new machine or an old machine.

5. Only report the diesel generator set or generator brand, not the place of origin, and do not report the unit brand. Such as Cummins in the United States, Volvo in Sweden, and Stanford in the United Kingdom. In fact, no diesel generator set can be completed by a single enterprise independently.

Customers should have a comprehensive understanding of the diesel generator set, generator, control cabinet manufacturers and brands of the unit, in order to comprehensively evaluate the grade of the unit.

6. Sell the unit without protection function (commonly known as four protection) as a unit with complete protection function to customers. What's more, units with incomplete instrumentation and no air switch are marketed to customers. In fact, the industry generally stipulates that units above 10kw must be equipped with full meters (commonly known as five meters) and air switches; Large units and automated units must have self-four protection functions.

7. Don't talk about the brand grade of diesel generator sets and generators, control system configuration, don't talk about after-sales service, and only talk about the delivery time. Some will also use non-power station special oil engines, such as: marine diesel generator sets, vehicle diesel generator sets for generator sets.

The quality (voltage and frequency) of electricity, the end product of the unit, cannot be guaranteed. Units that are too low ** generally have problems, commonly known as: only buy the wrong one, not sell the wrong one!

8. Don't talk about random accessories, such as with or without mufflers, fuel tanks, oil pipes, what grade of batteries, how large capacity batteries, how many batteries, etc. In fact, these annexes are so important that they must be written out in the contract. What's more, they don't even bring a fan to the water tank, so customers can open the pool by themselves.

Diesel generator set is an important standby power equipment, which needs to be purchased with caution and can be used handy. Henan Province Zhengfa power generation equipment **** dedicated to your service.

I look for a regular generator assembling company. Such a refurbished machine will not be bought. I work for a generator set company, I know that.

Our company can do regular diesel generator sets, good to say, reliable quality, welcome to call.

The main thing is to choose the engine brand, choose a regular engine manufacturer, preferably OEM.

First of all, you know how much power your load is rated. Then choose based on the money you have on hand. Buy from a regular ** merchant. Don't go to any hardware city, mechanical and electrical city or the like, if you can't do it, buy a parallel goods.