Selection of generator set 10, selection of generator set

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.

1. Try to choose well-known generator set brands at home and abroad.

The general first-line brand quality and after-sales are guaranteed, and there is no need to worry about parts replacement.

2. The documents should be complete.

A qualified generator should have a production license, a product certificate, and a trademark registration certificate. Among them, the product certificate should include the certificate of the whole unit, the certificate of internal combustion engine and the certificate of generator.

3. The noise of the machine should be low.

Now when buyers buy generators, they will ask the seller to test the machine on the spot, and the noise of a better generator will be relatively small. For example, when a 2 kilowatt gasoline generator is started, two people talking next to each other must be able to hear clearly (about 70 decibels), such a machine is good.

4. The power should be suitable.

It depends on how much power you need, such as a household generator, because you have more household appliances such as refrigerators and air conditioners, you need to choose to buy a generator of about 5 8 kilowatts.

Genset parameters refer to the performance data description of a generator set, through the power generation unit parameters, customers can clearly understand the performance and data of the required generator set. Genset parameters include power, voltage, frequency, separate parameters of diesel engine and generator, etc. Here are some examples:

Unit model: HL500GF

Output Common Spare Capacity (kVA): 625

Output common standby power (kw): 500 550 output common standby current (a): 900 990

Output voltage (V) 400 230

Frequency (Hz): 50

Factor. Lag.

Phase number and line system: three-phase four-wire system.

Voltage debugging: automatic constant voltage system.

Voltage test: three-phase detection.

Current test: three-phase detection.

Steady-state voltage regulation:

Steady-state frequency regulation: 5%.

Steady-state voltage fluctuation:

Steady-state frequency volatility:

Transient voltage regulation: -15% -20%.

Transient frequency regulation: -10% -10%.

Voltage Setting Rise Range:

Voltage Tuning Drop Range:

Frequency Drop: Connection: International SAE flexible connection.

Power transmission mode: manual.

Operating environment: ambient temperature 40, altitude 1000m, relative humidity.

Conform to the standard: in line with the national standard GB T2820-2009 diesel engine. Model: KTAA19-G6A

Output power (kw ps): 610

Engine structure: in-line, 6-cylinder, four-stroke, turbocharged.

Air and air cooling. Bore stroke (mm): 159 159 rpm min: 1500

Exhaust volume L: speed regulation mode: electronic speed regulation.

Starting mode: 24V DC.

Start. Cooling method: closed water circulation.

Air-cooled. Fuel consumption rate (100%)g: 203

Compression ratio::1

Filtration system: Integral change of oil, diesel and air filters.

Exhaust system: Adopt a muffler with high noise reduction efficiency for industrial use.

Dynamo. Model: HLF-500

Structure and excitation mode: brushless self-excitation, self-heat dissipation, pure copper wire production.

Approved capacity of Eling (KVA): 625

Rated power (kw): 500

Degree of protection: IP21

Insulation rating. h

Number of poles: 4 poles.

Control screen. Model: HLK500

Monitoring items: current, voltage, frequency, oil pressure, water temperature, speed, etc.

1500kw Cumminna Hail Cracks Diesel Generator Flushing Shutdown Unit.

Household generators generally choose small generator sets on it, according to the situation of their own household appliances to buy, small generator sets are divided into gasoline generators and diesel generators, power limb Huai optional: 3kw 5kw 6kw 7kw 8kw 9kw 10kw, etc., generally speaking, 5kw units can meet the use of power outages, if there are many household appliances, larger units can be purchased according to the situation. And hunger imitation.

110kw Engine Model: 6 cylinder inline Genset size: 2280 855 1300 (LxWxH) mm.

200KW Engine Model: NT855-GA 6 cylinder inline Genset size: 3000 1060 1900 mm (long years liters wide and high) mm.

500kw Engine: KTAA19G61 6 cylinder inline Genset size: 3600 1500 2100 (length, width and height) mm 1000kw Engine model:

KTA50-G3 16 cylinder V-arrangement Generator set size: 5200 1830 2400 mm (length, width and height) mm.

There are many models of generator sets, and the models of the units are different if the unit brand, configuration, and unit power are different. The following focuses on introducing the precautions for the selection of generator sets to users.

1. The performance and quality of the selected diesel generator set must meet the requirements of relevant standards.

2. The main factors that should be considered in the selection of diesel generator sets The factors that should be considered in the selection of the unit mainly include mechanical and electrical performance, the purpose of the unit, the capacity and range of change of the load, and the automation function.

1) The purpose of the unit. Because the diesel generator set can be used in 3 situations, such as common, standby and emergency. Therefore, the requirements for diesel generator sets for different purposes are different.

2) Load capacity. The load capacity and the load change range should be selected according to different uses, and the single capacity of the diesel generator set and the standby diesel generator set capacity should be determined.

3) The environmental conditions of the unit (mainly referring to the altitude and climatic conditions).

4) Choice of diesel generator.

5) Selection of generator and excitation mode.

6) Selection of automation functions of diesel generators.

Diesel generator is a device that converts the bioenergy of diesel into the electrical energy of the generator set, and then outputs the electrical energy to drive the work of the electrical equipment. Generator sets are divided into fixed generator sets, mobile generator sets, silent generator sets, high-voltage generator sets, parallel generator sets, cloud service generator sets, etc.

Stationary generator sets are mainly used for power in fixed occasions, such as: hospitals, supermarkets, etc.;

The mobile generator set is suitable for the power of places where the occasion is not fixed, such as: field mining;

Silent generator sets are mainly used in occasions that require electricity** but have high requirements for silence, such as: theaters, banks, etc.;

High-voltage generator sets are mainly used in places that require high-voltage power, such as mining enterprises;

Parallel generator sets are mainly used in occasions with a lot of electrical equipment and high power, such as island mining;

Cloud service generator sets are mainly long-distance intelligent operation, which is more humanized.

Rated output voltage, rated output frequency, rated output power, voltage stability, frequency stability, power stability, .......

Main parameters: capacity, voltage, current, power factor, speed, flying speed, excitation mode, excitation voltage, excitation current, insulation grade, longitudinal axis reactance, transverse axis reactance, weight, frame number, manufacturer, factory number, factory date.

Generators are mechanical devices that convert other forms of energy into electrical energy, which are driven by water turbines, steam turbines, diesel engines or other power machinery to convert the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transfer it to the generator, which then converts it into electrical energy.

Classification of generator sets.

Generally speaking, the generator set is composed of an engine (providing kinetic energy), a generator (generating current), and a control system.

According to the power, it is divided into small generator sets, medium-sized generator sets and large generator sets;

According to the energy source that provides power, there are diesel generator sets, gas generator sets, gasoline generator sets, wind power sets, solar power sets, hydroelectric power sets, coal-fired power sets, etc.

According to the way of converting electrical energy, it can be divided into two categories: alternator and DC generator.

Alternators are further divided into two types: synchronous generators and asynchronous generators.